Samsung Air Conditioner Installation Manual

Installation Guide for SAMSUNG models including: AM080AXVGGH Series, AM080AXVGGH Series Air Conditioner, Air Conditioner

Air conditioner - Installation manual - Top Service

31 gen 2022 — Thank you for purchasing this Samsung air conditioner. • Before operating this unit, please read this installation manual carefully and retain it for future.

Air conditioner - Top Service

2 English Contents Safety Information 3 Safety Information 3 Installation Procedure 5 Preparations for Outdoor Unit 5 Choosing the installation location 10

File Info : application/pdf, 68 Pages, 3.72MB

DB68-09978A-02 IM DVM S2 Outdoor EU EN other 21.06.10

Air conditioner
Installation manual
AM***AXV***
· Thank you for purchasing this Samsung air conditioner. · Before operating this unit, please read this installation manual carefully and retain it for future
reference.

Contents

Safety Information

Installation Procedure

Preparations for Outdoor Unit

Choosing the installation location

Preparing materials and tools

Outdoor unit installation

Refrigerant pipe installation

Electrical wiring work

Air tightness test and vacuum drying

Pipe insulation

Refrigerant charging

Basic segment display

Setting outdoor unit option switch and key function

Optional: Setting the MCU and Pipe Addresses (for HR Only)

Performing final checks and trial operation

Appendix

Inspection and trial operation

Automatic refrigerant amount detection function

Product Information

Correct Disposal of This Product (Waste Electrical & Electronic Equipment)
(Applicable in countries with separate collection systems) This marking on the product, accessories or literature indicates that the product and its electronic accessories (e.g. charger, headset, USB cable) should not be disposed of with other household waste at the end of their working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate these items from other types of waste and recycle them responsibly to promote the sustainable reuse of material resources. Household users should contact either the retailer where they purchased this product, or their local government office, for details of where and how they can take these items for environmentally safe recycling. Business users should contact their supplier and check the terms and conditions of the purchase contract. This product and its electronic accessories should not be mixed with other commercial wastes for disposal.
For information on Samsung's environmental commitments and product-specific regulatory obligations, e.g. REACH, visit: www.samsung.com/uk/aboutsamsung/sustainability/environment/our-commitment/data/
2 English

Safety Information

Please follow the following safety information for safety of the installer and the user. · DVM S2 air conditioner uses R-410A refrigerant.
When using R-410A, moisture or foreign substances may affect the performance and reliability of the product. Safety precautions must be obeyed when installing the refrigerant pipe.
The designed maximum pressure of the system is 4.1MPa and therefore select appropriate material and thickness according to the regulations.
R-410A is a quasi-azeotrope of two refrigerants and it has to be charged in liquid phase when filling the refrigerant. (If you charge vapor refrigerant, it may change the blend of the refrigerant and cause product malfunction.)
· You must connect the indoor units for R-410A refrigerant. Refer to product catalog to find out the models names for connectable indoor units. (If you connect the indoor units that are not designed for R-410A, it cannot operated normally.)
· After completing the installation and trial operation, explain to the user how to use and maintain the product. Also, hand over this installation manual so that it can be stored by the user.
· Manufacturer is not responsible for the incidents occurred by improper installation. Installer is responsible for any installation related claims from the user occurred by neglecting warnings and cautions stated in this manual. (Installer will be responsible for any service charges that may occur)
· Generally, system air conditioners should not be relocated after installation. But when it has to be relocated for inevitable reasons, please contact Samsung's qualified dealers for system air conditioners.
WARNING
· Hazards or unsafe practices that may result in severe personal injury or death.
CAUTION
· Hazards or unsafe practices that may result in minor personal injury (to installer/user) or property damage.
General information
WARNING
· Consult qualified installer or dealer for installation. When installation is done by unqualified person, problems such as water leakage, electric shock or fire may occur.
· Installation work must be done properly according to this installation manual. When installation is not done properly, it may cause water leakage, electric shock or fire.
· When installing the unit in a small room, take measure to keep the refrigerant concentration from exceeding allowable safety limits in case of refrigerant leakage. Consult the dealer for precautionary measure before the installation. When refrigerant leaks and exceed dangerous concentration level, it may cause suffocation accidents.
· If any gas or impurities, except R-410A refrigerant, come into the refrigerant pipe, serious problem may occur and it may cause injury.

· Use the supplied accessories, specified components and tools for the installation.
Do not use the pipe and the installation product used for refrigerants except R-410A.
Failure to use the specified components can cause product fall down, water leakage, electrical shock, and fire. (The pipe and flare components used for refrigerants except R-410A must not be used)
· Install the outdoor unit on a hard and even place that can support its weight.
If the place cannot support its weight, the outdoor unit may fall down and it may cause injury.
· Check the following before installation and service work.
Before welding, remove dangerous and inflammable things that may cause an explosion and fire around the work.
Before welding, remove the refrigerant from inside the pipe or the product.
If you perform welding while refrigerant is in the pipe, it may increase the pressure of the refrigerant and cause the pipe to burst. If the pipe bursts or explodes, it may cause severe injury to the installer.
When welding, use the nitrogen gas to eliminate oxidation inside the pipe.
· Do not modify the product on your own.
Potential risk of electric shock, fire, product failure or injury.
· Fix the outdoor unit securely on foundation to resist strong wind or earthquake.
If the outdoor unit is not properly fixed, it turns over and accidents may occur.
· Electric work must be done by qualified persons, complying the national wiring regulations and installed according to the instruction stated in the installation manual with leased circuit.
Capacity shortage on the leased circuit and improper installation may cause electric shock or fire.
· Make sure to perform grounding work.
Do not connect the ground wire to a gas pipe, water pipe, lightning rod or telephone grounding. Improper grounding could cause electric shock.
· Wiring must be connected with the designated wires and it must be fixed securely so that it does not apply any external force to the connection part of the terminals.
If connection for fixation is not properly done, it may cause heat generation or fire.
· Neatly arrange the wires in the electrical parts to make sure that electrical cover is closed securely without any gaps.
If the cover is not properly closed, heat may generate on the electrical terminal and cause electric shock or fire.
· Exclusive circuit breaker (MCCB, ELB) must be installed to the power supply.
When overcurrent or current leakage occurs with no circuit breaker installed, power will not be cut-off and it may cause electric shock or fire.
Do not use damaged parts. It may cause fire or electric shock.
· You must cut-off the power before you work on, or adjust any power supply part for product installation, maintenance, repair or any other services.
There is risk of electric shock.
Even when the power is off, it is dangerous when you come in contact with inverter PCB, fan PCB since high pressure DC voltage is charged to those parts.

English 3

Safety Information

When replacing/repairing the PCB, cut-off the power and wait until the DC voltage is discharged before replacing/ repairing them. (Wait for more than 15 minutes to allow it to discharge naturally.)
If the refrigerant gas leaks during the installation, you should ventilate the room.
When the refrigerant gas gets in contact with flammable substance, it may generate toxic gas.
· Gas leakage must be checked after installation is completed.
When the refrigerant gas gets in contact with flammable substance, it may generate toxic gas.
· You can get a frostbite if you get in contact with the leaked refrigerant gas.
· Supply power to the product during winter time since the product will operate in protection mode itself when the temperature decrease below 0°C.
If you cut-off the power, compressor protection mode cannot be operated and may cause damage to the product.
· Wear protective equipment (such as safety gloves, goggles, and headgear) during installation and maintenance works. Installation/repair technicians may be injured if protective equipment is not properly equipped.
· This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.
For use in Europe : This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
CAUTION
· Do not install the drain pipe directly to the bottom part of the outdoor unit and built a proper drainage so that water drains out smoothly. If not, pipe may freeze or bursts during winter time and cause damage to the product or water leakage.
When the draining work is not done properly, water leak may occur and cause property damage.
· Install the power cable and communication cable of the indoor and outdoor unit at least 1.5m away from the electric appliances and install it at least 2m away from the lightning conductor.
Noise may be generated from the electronic devices, depending on the status of the electric wave.
· Install the outdoor unit within the angle stated in the table, according to the height of the building.
Do not leave the refrigerant container under the hot sunlight. (There is risk of explosion.)
You must use the appropriate pipes according to the standard since the pressure of the refrigerant is high.
Make sure that the pipes does not get any weaker by welding it too much.
Make sure to install the product away from children's' reach. (Sharp parts of the heat exchanger may cause personal injury and when parts of the product gets damage, it may decrease product's performance.)

Lightning rod Protection angle: 25°~55°

Height of the building

Protection angle

20m or less

55°

40m or less

35°

60m or less

25°

· Install the indoor unit away from lighting apparatus that uses ballast stabilizer.

If you use the wireless remote control, it may not operate normally due to ballast stabilizer.

· Do not install the product in following places.

Place where outdoor unit's noise and warm air may disturb neighbors. (It may cause property loss.)

Do not leave any obstacles around the inlet and outlet of the product. (It may cause damage or accidents.)

The place where there is mineral oil or arsenic acid.

Those parts may get damaged due to burned resin and cause water leakage or product may fall.

The efficiency of the heat exchanger may reduce or product may break.

The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air outlet.

The copper pipe or connection pipe may corrode and refrigerant may leak.

The place where there is a machine that generates electromagnetic waves.

The air conditioner may not operate normally due to problems in control system.

The place where there is a danger of combustible gas leakage or place where thinner or gasoline is handled.

(There is risk of fire or explosion.)

The place with carbon fiber or flammable dust.

The place near seashore or hot spring where there is risk of outdoor unit corrosion.

· Changes in DVM S2 (inverter) compare to conventional models that has to noted when installing

For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (Do not use T-joint)

You cannot operate normally if you do not complete the trial operation through outdoor unit key mode. You must use KEY MODE to run trial operation.

Check the compatibility of other products such as indoor unit, EEV kits etc. which will be connected to DVM S2.

Make sure to note that outdoor unit combination is different from DVM PLUS III, IV and DVM S.

The length of maximum piping, level difference, the quantity of connectable indoor units, the installation at the outdoor joints and the outdoor unit combinations are different from the conventional models.

If the pipe length is over 2 m between outdoor units, make traps to prevent oil stagnation. Oil stagnation may occur when outdoor unit at the end of module stops while other outdoor units are still in operation.

4 English

Preparations for Outdoor Unit

Outdoor unit classification

Classification

DVM S2 Small type

DVM S2 Large type

Forklift holes

Installation Procedure

Appearance

Forklift Holes for forklift forks
to go through

CAUTION
Packaging material disposition · Safely store or dispose the packaging materials.
Sharp metals such as nails or wooden material packaging that may break into pieces become a cause for personal injury.
Make sure to store or dispose the vinyl type packaging material to keep it out of reach of children. Children may put them over their face, which is very dangerous since it may lead them to suffocation.
Moving the outdoor unit
· Select the moving path in advance. · Be sure that moving path can support weight of the outdoor unit. · Do not slant the product more than 30° when carrying it. (Do
not lay the product down in sideways.) · Surface of the heat exchanger is sharp. Be careful not to get
injured while moving the product. · When transporting DVM S2 outdoor, be aware of the center
of gravity of the outdoor (Please refer to the center of gravity label attached on the front panel, and remove it after installation. )
CAUTION
· You must use certain part of the product when moving the product.
When moving with a crane
· Fasten the wire rope as shown in the figure. · To protect damage or scratches, insert a piece of cloth between
the outdoor unit and the wire rope.
Wire rope
Holes for wire rope to go through
When moving with a forklift
· Carefully insert the forklift forks into the forklift holes at the bottom of the outdoor unit.
· Be careful with the forklift from damaging the product.

When moving the product without wooden pallet and the crane is not available for use
· Connect a wire rope to the outdoor unit as you would move it with a crane.
· Hang the wire rope to the forklift fork to move the outdoor unit.

Forklift

Wire rope

Outdoor unit combination
· Make sure to use an indoor unit that is compatible with DVM S2. · Indoor units can be connected within the range indicated in
following table. · If the total capacity of the connected indoor units exceeds the
indicated maximum capacity, cooling and heating capacity of the indoor unit may decrease. · Total capacity of the connected indoor units can be allowed from 50% to 130% of the total outdoor unit capacity. 0.5 × (Outdoor unit capacity) Total capacity of the connected indoor units 1.3 × (Outdoor unit capacity) · Please contact your local Samsung representative or refer to the Technical Data Book for further details if the project requires you to design the project with a connection ratio greater than 130 %. · You can connect maximum 64 indoor units to the outdoor unit. Maximum quantity of connectable indoor unit is set to 64 since outdoor unit only support up to 64 communication address. Indoor unit address can be assigned from 0~63. If the indoor unit address was assigned from 64~79, E201 error will occur. · Maximum 32 Wall-mount type indoor units with EEV (AM****NQDEH*, AM***JNV*) can be connected. · Do not install 1st-generation MCU and 2nd-generation MCU together. 1st-generation MCU: MCU-S*NEE*N, MCU-S2NEK1N 2nd-generation MCU: MCU-S*NEK2N, MCU-S4NEK3N,
MCU-S1NEK1N
CAUTION
· Use the following table to determine the size and number of outdoor units needed to achieve the capacity requirements.
English 5

Installation Procedure

Preparations for Outdoor Unit

Premium energy efficiency type (Heat Pump)

Model name for combination
AM080AXVGGH AM100AXVGGH AM120AXVGGH AM140AXVGGH AM160AXVGGH AM180AXVGGH AM200AXVGGH AM220AXVGGH AM240AXVGGH AM260AXVGGH AM280AXVGGH AM300AXVGGH AM320AXVGGH AM340AXVGGH AM360AXVGGH AM380AXVGGH AM400AXVGGH AM420AXVGGH AM440AXVGGH AM460AXVGGH AM480AXVGGH AM500AXVGGH AM520AXVGGH AM540AXVGGH AM560AXVGGH AM580AXVGGH AM600AXVGGH AM620AXVGGH AM640AXVGGH AM660AXVGGH AM680AXVGGH AM700AXVGGH AM720AXVGGH AM740AXVGGH AM760AXVGGH AM780AXVGGH AM800AXVGGH AM820AXVGGH AM840AXVGGH AM860AXVGGH AM880AXVGGH AM900AXVGGH AM920AXVGGH AM940AXVGGH AM960AXVGGH AM980AXVGGH

Number of individual outdoor units
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4

Total capacity of the connected indoor units Maximum number
of connectable

Combined outdoor units AM***AXVGGH

Minimum Maximum

(kW)

indoor units

080 100 120 140 160 180 200 220 240 260

11.2

29.1

14.0

36.4

16.8

43.7

19.6

51.0

22.4

58.2

25.2

65.5

28.0

72.8

30.8

80.1

33.6

87.4

36.4

94.6

39.2

101.9

42.0

109.2

44.8

116.5

47.6

123.8

50.4

131.0

53.2

138.3

56.0

145.6

58.8

152.9

61.6

160.2

64.4

167.4

67.2

174.7

70.0

182.0

72.8

189.3

75.6

196.6

78.4

203.8

81.2

211.1

84.0

218.4

86.8

225.7

89.6

233.0

92.4

240.2

95.2

247.5

98.0

254.8

100.8

262.1

103.6

269.4

106.4

276.6

109.2

283.9

112.0

291.2

114.8

298.5

117.6

305.8

120.4

313.0

123.2

320.3

126.0

327.6

128.8

334.9

131.6

342.2

134.4

349.4

137.2

356.7

6 English

Installation Procedure

Standard Type (Heat Pump)

Model name for combination
AM080AXVAGH AM100AXVAGH AM120AXVAGH AM140AXVAGH AM160AXVAGH AM180AXVAGH AM200AXVAGH AM220AXVAGH AM240AXVAGH AM260AXVAGH AM280AXVAGH AM300AXVAGH AM320AXVAGH AM340AXVAGH AM360AXVAGH AM380AXVAGH AM400AXVAGH AM420AXVAGH AM440AXVAGH AM460AXVAGH AM480AXVAGH AM500AXVAGH AM520AXVAGH AM540AXVAGH AM560AXVAGH AM580AXVAGH AM600AXVAGH AM620AXVAGH AM640AXVAGH AM660AXVAGH AM680AXVAGH AM700AXVAGH AM720AXVAGH AM740AXVAGH AM760AXVAGH AM780AXVAGH AM800AXVAGH AM820AXVAGH AM840AXVAGH AM860AXVAGH AM880AXVAGH AM900AXVAGH AM920AXVAGH AM940AXVAGH AM960AXVAGH AM980AXVAGH

Number of individual outdoor units
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4

Total capacity of the connected indoor units Maximum number
of connectable

Combined outdoor units AM***AXVAGH

Minimum Maximum

(kW)

indoor units

080 100 120 140 160 180 200 220 240 260

11.2

29.1

14.0

36.4

16.8

43.7

19.6

51.0

22.4

58.2

25.2

65.5

28.0

72.8

30.8

80.1

33.6

87.4

36.4

94.6

39.2

101.9

42.0

109.2

44.8

116.5

47.6

123.8

50.4

131.0

53.2

138.3

56.0

145.6

58.8

152.9

61.6

160.2

64.4

167.4

67.2

174.7

70.0

182.0

72.8

189.3

75.6

196.6

78.4

203.8

81.2

211.1

84.0

218.4

86.8

225.7

89.6

233.0

92.4

240.2

95.2

247.5

98.0

254.8

100.8

262.1

103.6

269.4

106.4

276.6

109.2

283.9

112.0

291.2

114.8

298.5

117.6

305.8

120.4

313.0

123.2

320.3

126.0

327.6

128.8

334.9

131.6

342.2

134.4

349.4

137.2

356.7

English 7

Preparations for Outdoor Unit

Essential type (Heat Pump)

Total capacity of the

Combined outdoor units

Model name for combination

Number of individual outdoor units

connected indoor units

Minimum Maximum

(kW)

Maximum number of connectable indoor units

100

AM***AXVDGH/EU

120

140

160

180

AM100AXVDGH

14.0

36.4

AM120AXVDGH

16.8

43.7

AM140AXVDGH

19.6

51.0

AM160AXVDGH

22.4

58.2

AM180AXVDGH

25.2

65.5

AM200AXVDGH

28.0

72.8

AM220AXVDGH

30.8

80.1

AM240AXVDGH

33.6

87.4

AM260AXVDGH

36.4

94.6

AM280AXVDGH

39.2

101.9

AM300AXVDGH

42.0

109.2

AM320AXVDGH

44.8

116.5

AM340AXVDGH

47.6

123.8

AM360AXVDGH

50.4

131.0

AM380AXVDGH

53.2

138.3

AM400AXVDGH

56.0

145.6

Installation Procedure

8 English

Installation Procedure

Premium energy efficiency type (Heat Recovery)

Model name for combination
AM080AXVGGR AM100AXVGGR AM120AXVGGR AM140AXVGGR AM160AXVGGR AM180AXVGGR AM200AXVGGR AM220AXVGGR AM240AXVGGR AM260AXVGGR AM280AXVGGR AM300AXVGGR AM320AXVGGR AM340AXVGGR AM360AXVGGR AM380AXVGGR AM400AXVGGR AM420AXVGGR AM440AXVGGR AM460AXVGGR AM480AXVGGR AM500AXVGGR AM520AXVGGR AM540AXVGGR AM560AXVGGR AM580AXVGGR AM600AXVGGR AM620AXVGGR AM640AXVGGR AM660AXVGGR AM680AXVGGR AM700AXVGGR AM720AXVGGR AM740AXVGGR AM760AXVGGR AM780AXVGGR AM800AXVGGR AM820AXVGGR AM840AXVGGR AM860AXVGGR AM880AXVGGR AM900AXVGGR AM920AXVGGR AM940AXVGGR AM960AXVGGR AM980AXVGGR

Number of individual outdoor units
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4

Total capacity of the connected indoor units Maximum number
of connectable

Combined outdoor units AM***AXVGGR

Minimum Maximum

(kW)

indoor units

080 100 120 140 160 180 200 220 240 260

11.2

29.1

14.0

36.4

16.8

43.7

19.6

51.0

22.4

58.2

25.2

65.5

28.0

72.8

30.8

80.1

33.6

87.4

36.4

94.6

39.2

101.9

42.0

109.2

44.8

116.5

47.6

123.8

50.4

131.0

53.2

138.3

56.0

145.6

58.8

152.9

61.6

160.2

64.4

167.4

67.2

174.7

70.0

182.0

72.8

189.3

75.6

196.6

78.4

203.8

81.2

211.1

84.0

218.4

86.8

225.7

89.6

233.0

92.4

240.2

95.2

247.5

98.0

254.8

100.8

262.1

103.6

269.4

106.4

276.6

109.2

283.9

112.0

291.2

114.8

298.5

117.6

305.8

120.4

313.0

123.2

320.3

126.0

327.6

128.8

334.9

131.6

342.2

134.4

349.4

137.2

356.7

English 9

Choosing the installation location

Installation Procedure

Outdoor unit location requirements
Decide the installation location, with the consideration of the following conditions, under user's approval. · Place where hot discharge air or noise from the outdoor unit
may not disturb the neighbor (Especially in residential areas, keep the operation hours in mind.) · Place where structure can bear the weight and vibration of the outdoor unit. · Place with flat surface where rainwater does not settle or leak. · Place where it is not exposed to strong wind. · Well ventilated place with sufficient service place for repairs and maintenance. (Discharge duct must be purchased separately in your local market.) · Place where you can connect the refrigerant pipes between indoor and outdoor units within allowable distance. · Place where it allows easy waterproofing and draining work for the condensation water generated from the outdoor unit during heating operation. · Place where there is no risk of inflammable gas leakage. · Place where there is no direct influence of snow or rain. · Place where a large amount of water generated by external environment does not directly affect the top of the outdoor unit.
Installation Guide at the seashore
Make sure to follow below guides when installing at the seashore. 1 Do not install the product in a place where it is directly
exposed to sea water and sea breeze. Make sure to install the product behind a structure (such as
building) that can block see breeze. Even when it is inevitable to install the product in seashore,
make sure that product is not directly exposed to sea breeze by installing a protection wall.

5 Make sure to install the product in a place that provides smooth water drainage. Especially, ensure that the base part has good drainage.
6 If the product is damaged during the installation or maintenance, make sure to repair it.
7 Check the condition of the product periodically. Check the installation site every 3 months and perform anticorrosion treatment such as R-Pro supplied by SAMSUNG (Code : MOK-220SA) or commercial water repellent grease and wax, etc., based on the product condition. When the product is to be shut down for a long period of time, such as off-peak hours, take appropriate measures like covering the product.
8 If the product installed within 500m of seashore, special anticorrosion treatment is required. Please contact your local SAMSUNG representative for further details.
If you cannot find a proper location to install the outdoor unit, consult with an expert or specialty store.
Outdoor unit

Sea breeze

Outdoor unit

Sea Sea breeze

Outdoor unit

Protection wall Sea breeze

Outdoor unit

Outdoor unit Sea
Protection wall should be constructed with a solid material that can block the sea breeze and the height and width of the wall should be 1.5 times larger than the size of the outdoor unit. (You must secure more than 700mm of space between the protection wall and the outdoor unit for air circulation.)
2 Consider that the salinity particles clinging to the external panels should be sufficiently washed out.
3 Because the residual water at the bottom of the outdoor unit significantly promotes corrosion, make sure that the slope does not disturb drainage. Keep the floor level so that rain does not accumulate. Be careful not to block the drain hole due to foreign substance
4 When product is installed in seashore, periodically clean it with water to remove attached salinity.

Sea
CAUTION
· System air conditioner may cause static noise when listening to AM stations. Therefore, select an installation location for indoor unit where electrical wiring can be done while keeping certain distance from a radio, computer and stereo equipment. Especially, keep the unit at least 3m away from the electrical equipment in an area with weak electromagnetic waves and put the main power cable and communication cables in a separately installed protection tube. Make sure that there is no equipment that generates electromagnetic waves. If not electromagnetic waves may cause problem to the control systems which may lead to air conditioner malfunction. (Example: Remote control sensor of the indoor unit may not receive the signal very well, due to ballast stabilizer of the lighting equipment.)
· In regions with heavy snowfall, make sure to install the outdoor unit where there is no concerns of direct snowfall on the outdoor unit. Also, build higher base support so that accumulated snow does not block the air inlet or the heat exchanger.
· R-410A refrigerant is a safe, nontoxic and nonflammable refrigerant. However, if the place holds any concerns for exceeding dangerous level of refrigerant concentration in case of refrigerant leakage, extra ventilation system is required.

10 English

Installation Procedure

· When you install the outdoor unit in high places such as a roof, install fence or guardrail around it. When there is no fence or guardrail, service person could fall.
· Do not install the product in places where corrosive gases such as sulfur oxides, ammonia, and sulfurous gas are produced. (e.g. Toilet outlet, ventilation opening, sewage works, dyeing complex, cattle shed, sulfuric hot spring, nuclear power plant, ship etc.) When installing the product in those places, contact an installation specialty store as the copper pipe and brazing part will need additional corrosion proof or anti-rust additive to prevent corrosion.
· Make sure not to keep any inflammable materials (such as wooden materials, oil etc.) around the outdoor unit. When there's fire, those inflammable material will easily catch the fire and may pass it on to the product.
· Depending on the condition of power supply, unstable power or voltage any cause malfunction of the parts or control system. (At the ship or places using power supply from electric generator...etc)
· Make sure to install MCU when using HR products. · When you select the location to install the MCU, the location is
far away from indoor rooms because the refrigerant running of MCU may create noise.
Outdoor unit space requirements
· Space requirement was decided based on following conditions; Cooling mode, outdoor temperature of 35 °C. Larger space is required if the outdoor temperature is higher than 35 °C or if the place is heated easily by quantity of solar radiation.
· When you secure installation space, consider path for people and the direction of the wind.
· Secure installation space as shown in the below illustration, considering ventilation and the service space.
· If the installation space is narrow, installer or other worker may get injured during work and may also cause problem to the product.
· If you install multiple number of outdoor units in one space, make sure to secure enough ventilation space if there's any walls around the product that may disturb the air flow. If enough ventilation space is not secured, product may malfunction.
· You may install the outdoor units with 20mm of space between the product, but product's performance may decrease depending on the installation environment.
Single installation
(Unit : mm)

Over100 (S2)

Over 500 (S1)

Over 100

Front side

Over 100

Module installation

(Unit : mm)

Over 300 (S2)

Over100

Over 500 (S1)

Over Front 100 side

Over 100

Over 300

Over 400

Front side

Over 400

Height of the wall is unlimited

Over 100

Over100 Over100

Over 100

Over 200

Over 500

Over 600

Over 100

Front side Over100 Over100

Over 100

Over 500

Front side
<Case 3>
· For <Case 1> or <Case 3> Height of the wall on the front side should not be higher than 1500mm. Height of the wall on the air inlet side should not be higher than 500mm. Height of the wall on the side is not limited. If the height of the wall exceeds by certain value (h1, h2), additional clearance [(h1)/2, (h2)/2 : Half of the exceeded height] should be added to the service space (S1, S2).
(Unit : mm)

Air inlet side

Front side

1500

500

Over 300 Front side

Height of the wall is unlimited

Over 100

S1+h1/2

S2+h2/2

English 11

Installation Procedure

Preparing materials and tools

· You must keep the installation manual until the installation is finished.
· Hand over the installation manual to the customer after finishing the installation.
Installation manual (1)

Optional accessories
· Following optional accessories are needed for connecting pipes between the indoor and outdoor units.

Classification Y-Joint

Model Name MXJ-YA1509M MXJ-YA2512M MXJ-YA2812M MXJ-YA2815M MXJ-YA3419M MXJ-YA4119M MXJ-YA4422M

Specification 15.0 kW and below 15.1 kW ~ 40.0 kW 40.1 kW ~ 45.0 kW 45.1 kW ~ 70.3 kW 70.4 kW ~ 98.4 kW 98.5 kW ~ 135.2 kW
Over 135.2 kW

Classification

Model Name MXJ-YA1500M

Specification 22.4 kW and below

Y-Joint (Only H/R)
Distribution header Y-Joint
- Outdoor unit

MXJ-YA2500M MXJ-YA3100M MXJ-YA3800M MXJ-HA2512M
MXJ-HA3115M
MXJ-HA3819M MXJ-TA3419M MXJ-TA4122M

22.5 kW ~ 70.3 kW
70.4 kW ~ 135.2 kW
Over 135.2 kW
45.0 kW and below (for 4 rooms)
70.3 kW and below (for 8 rooms)
70.4 kW ~ 135.2 kW (for 8 rooms)
135.2 kW and below
Over 135.2 kW

Y-Joint (Only H/R) - Outdoor unit

MXJ-TA3100M MXJ-TA3800M

135.2 kW and below Over 135.2 kW

If you use an indoor unit with no internal EEV(Electric Expansion Valve), you will need an EEV kit.
Only use the genuine accessories listed in above table and do not use imitated accessories.

Outdoor unit installation

WARNING
· Make sure to remove the wooden pallet before installing the outdoor unit. If you do not remove the wooden pallet, there is risk of fire during welding the pipes. If the outdoor unit is installed with wooden pallet on, and it was used for long period time, wooden palette may break and cause electrical hazard or high pressure may damage the pipes.
Fix an outdoor unit firmly on the base ground with anchor bolts.
Manufacturer is not responsible for the damage occurred by not following the installation standards.
1 Make sure that the height of the base ground is 200mm or higher to protect the outdoor unit from rain water or other external conditions. Also, install a draining pit around the base ground and connect the drain pipe to the drainage.
2 Considering the vibration and weight of the outdoor unit, strength of the base ground must be strong to prevent noise and the top surface of it should be flat.
3 Base ground should be 1.5 times larger than the bottom of the outdoor unit.
4 Outdoor unit must be fixed firmly so that it can withstand the wind speed of 30m/s. If you cannot fix the outdoor unit on the base ground, fix it by side or use extra structure.

5 In heating operation, defrost water may form so you must really care about the drainage and waterproofing the floor. To prevent defrost water from stagnating or freezing, construct a drainage with over 1/50 slope. (Ice may form on the floor in winter season.)
6 It is necessary to add wire mesh or steel bar during concrete construction for the base ground to prevent damages or cracks.
7 When installing multiple outdoor units at the same place, construct an H beam or an anti-vibration frame on the base ground to install the outdoor unit.
8 After installing an H beam or an anti-vibration frame, apply corrosion protection and other necessary coating.
9 When concrete construction for outdoor unit installation is completed, install an anti-vibration pad (t=20mm or more) or an anti-vibration frame to prevent vibration of the outdoor unit from transferring to the base ground.
10 Place the outdoor unit on an H beam or an anti-vibration frame and fix it with the bolt, nut and washer. (The bearing force has to be over 3.5kN)

12 English

Base ground construction

Draining pit

Over 200

(Unit : mm)
Bottom surface of the base ground must be horizontally leveled
Over 200

Over 200

Outdoor unit installation

(Unit : mm)

Classification (mm)

DVM S2 Small Type W930 x H1695 x D765

(Unit : mm) DVM S2 Large Type W1295 x H1695 x D765

930

1295

790

1155

Refer to the blueprints in technical data book to make a holes for connecting the anti-vibration pad.

Examples of draining work
· Construct the drainage ditch with reinforced concretes and make sure that water-proofing work is done.
· For smooth draining of defrost water, make sure to apply 1/50 slope.
· Construct a drainage around the outdoor unit to prevent the defrost water (from the outdoor unit) from stagnating, overflowing or freezing near the installation space.
· When the outdoor unit is installed on the roof, check the strength and waterproof status of the roof.

(Unit : mm)

60° 80

Base ground

960

730

100

Over 200

H beam or antivibration frame

100

Direction of the drainage (Slope 1/50)

150 100

Installation Procedure

Over 50

Over 200

100

54 54 730 763 80 60° 80 60° 80

Outdoor unit base mount and anchor bolt position

(Unit : mm)

Outdoor unit - Anti-vibration

frame (4-Ø 12)

Anti-vibration - Base ground (4-Ø 18)

<X-X' SECTION>

240

Direction of the drainage (Slope 1/50)

Classification A B

DVM S2 Small Type 1030 790

(Unit : mm) DVM S2 Large Type
1395 1155

English 13

Preparing materials and tools

CAUTION
· Cautions regarding on connecting the anchor bolt Tighten the rubber washer to prevent the bolt connection part of the outdoor unit from corroding.

Rubber washer

Anchor specification

Size

Diameter of drill bit (a)

Anchor length (b)

Sleeve length (c)

Insert depth

Fastening torque

Ø 10

14 mm 75 mm 40 mm 50 mm 30 N·m

Use the anchor bolts and nuts that is zinc plated or made of STS material. Regular anchor bolts or nuts may get damaged
by corrosion.

· Caution for installing discharge duct
Static pressure of the discharge duct should be within the standard specification when installing the duct.
If you remove the fan guard to install the discharge duct, make sure to install a safety net on the duct outlet. Foreign substance may enter into the product and there could be a risk of personal injury.
Wear protection equipment at all times when making galvanized sheet metal duct, since the worker may get injured by the sharp parts.
When installing the outdoor unit under the tree or near forest, leafs may get into the product and cause problems on the product. Therefore, install a discharge duct to prevent foreign substance infiltration.

c b

a
· Cautions regarding on connecting the pipe If you install the outdoor unit on the rooftop, check the strength and make sure to waterproof the rooftop. Construct draining pit around the base construction and pay attention to the drainage around the outdoor unit. (Condensation or defrost water may form during outdoor unit operation.) If there's any possibility of small animals from entering the pipe outlet, block the outlet as shown in the illustration.
Block the part. (When withdrawing the pipe from the front side)
Liquid side pipe

<Preventing foreign substance infiltration>
Installing the outdoor unit in various environments
Installing the outdoor unit around the obstacles
· It is necessary to install a discharge guide duct(field supply) to direct exhaust from the fan horizontally, when it is difficult to provide a minimum space of 2m between the air outlet and a nearby obstacle.
Upper floor

Gas side pipe

Discharged air

· Cautions regarding on anti-vibration frame installation
During installation, make sure there is no gap between the base ground and the supporting structures such as antivibration frame or H beam.
Base ground must be constructed strongly to support the bottom part of the anti-vibration mount.

Ex.) Balcony Discharged air

Installation Procedure

After installing the anti-vibration frame, untighten the fixing part on the top and bottom part of the frame.
14 English

Grille/louver
Suction air Ex.) Mechanical room

WARNING
· Should adopt bar type louver. Don't use a type of rain resistance louver.

[Bar type louver]

[Rain resistance louver]

· Louver specifications. Angle criteria : less than 20° Opening ratio criteria : greater than 80%
Installing the outdoor unit in cold region
· In cold regions with lots of snowfall, install a snow prevention duct, as a sufficient countermeasure, to prevent snow from accumulating on the outdoor unit. When the snow prevention duct is not installed, frost may accumulate on the heat exchanger and heating operation may not work normally.
· Air outlet of the duct should not be directed to the enclosed space.
CAUTION
· Cautions regarding on installing the frame and selecting the base ground Height (h) of the frame and the base ground should be higher than the "heaviest expected snowfall". Area of the frame and the base ground should not be larger than the are of the outdoor unit. Snow may accumulate if the area of the frame or the base ground is larger.

Installing the outdoor unit in windy region
· In windy regions such as near sea shores, protection wall or wind protection duct must be installed for normal operation of the outdoor unit. (Refer to the illustration of the snow prevention duct, for installing the wind protection duct.)
· Install the wind prevention duct with the consideration of major wind direction. If the direction of the discharge part is same as major direction of the wind, it could cause product's performance decrease.
CAUTION
· Cautions regarding on installing the frame and selecting the base ground The base ground must be solid and the outdoor unit must be fixed with anchor bolts. Make sure to install outdoor unit in a place strong enough to withstand its weight. If the place cannot withstand the weight of the outdoor unit, outdoor unit may fall and cause personal injury. When installing on a rooftop subject to strong wind, countermeasures must be taken to prevent the unit from falling down. Use a frame that is resistant to corrosion.

561

926

561

871

(Unit : mm)

788

668 532

2273

2302

725 725
1285 1308

1634

1123

952

1150

980

180

2048 1153

180

DVM S2 Small type

541

1330

541

765

540

871

Installation Procedure

668 532

2271

2300

725 464
725 1285 1408

1632

1302

952

1150

979

180

345 2413

DVM S2 Large type

567

765

541

English 15

Refrigerant pipe installation

WARNING
· When installing, make sure there is no leakage. When collecting the refrigerant, stop the compressor first before removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor works with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant cycle abnormally high which may lead to explosion and injury.

Refrigerant pipe work
· The length of refrigerant pipe should be as short as possible and the height difference between an indoor and outdoor unit should be minimized.
· Piping work must be done within allowable piping length, height difference, and the allowable length after branching.
· The pressure of the R-410A is high. Use only certified refrigerant pipe and follow the installation method.
· After installing the pipes, calculate the total length of the pipe to check if additional refrigerant is needed. When you need to charge the additional refrigerant, make sure to use R-410A refrigerant.
· Use clean refrigerant pipe and there shouldn't be any harmful ion, oxide, dust, iron content or moisture inside pipe.
· Use tools and accessories that fit on R-410A only.

Tool Pipe cutter Flaring tool
Refrigerant machine oil
Torque wrench
Pipe bender
Nitrogen gas
Welder Manifold
gage Refrigerant
charging hose

Installation process/ purpose

Pipe cutting

Pipe flaring

Refrigerant pipe
installation

Apply refrigerant oil on flared
part
Connect flare nut with pipe

Pipe bending

Air tightness
test

Prevent oxidation within the
pipe
Pipe welding

Air tightness
test ~ additional refrigerant charging

Vacuuming, charging refrigerant and checking operation

Compatibility with conventional tool
Compatible Exclusive ether oil, ester oil, alkali benzene oil or
synthetic oil
Compatible
Compatible Need exclusive one since there is risk of refrigerant
leakage or inflow of impurities

Tool
Vacuum pump
Scale for refrigerant charging Gas leak detector Flare nut

Installation process/ purpose
Pipe drying

Compatibility with conventional tool
Compatible (Use products which contain the check valve to prevent the oil from flowing backward into the outdoor unit.)
Use the one that can be vacuumed up to -100.7kpa(5Torr).

Refrigerant charging

Compatible

Gas leak test

Need exclusive one (Ones used for R-134a is
compatible)

Must use the flare nut equipped with the product.

Selecting refrigerant pipe

First branch joint
Increase the main pipe size

· Install the refrigerant pipe according to main pipe size of each outdoor unit capacity.
· When the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds 90m, you must increase the size of the pipe (main pipe) by one grade which connects between the outdoor unit to the first branch joint.
· For H/R model, When the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds 90m, you must increase the size of the liquid pipe by one grade among the pipes(main pipe) which connects between the outdoor unit to the first branch joint.

Installation Procedure

16 English

Installation Procedure

H/P

33.6 kW 40.0 kW 61.6 kW (D)

Ex.) 135.2 kW Capacity (kW) No.

33.6

(1)

Liquid Ø 12.70

Pipe size (mm)

Gas Ø 28.58

(A)

(1)

(2)

(3)

(B)

(C)

(E)

73.6

(2)

135.2

(3)

Ø 19.05 Ø 19.05

Ø 34.92 Ø 41.28

Size of the pipe connected to the outdoor unit (A)

Size of the pipe between the branch joint and the indoor unit

Select the size of the main pipe according to the below table.

Make a selection according to outdoor unit capacity.

Outdoor unit capacity (kW)
(Cooling)

*Maximum pipe length within 90m *Maximum pipe length over 90m Liquid (mm) Gas (mm) Liquid (mm) Gas (mm)

Capacity 25 25 < Capacity 32

Ø 9.52

Ø 19.05 Ø 22.22

Ø 12.70

Ø 22.22 Ø 25.40 note1)

32 < Capacity 39 39 < Capacity 44

Ø 12.70

Ø 15.88

Ø 28.58

44 < Capacity 48

Ø 28.58

48 < Capacity 55

Ø 31.75 note2)

55 < Capacity 66

Ø 15.88

Ø 19.05

66 < Capacity 72 72 < Capacity 100

Ø 34.92

Ø 38.10 note3)

100 < Capacity 139 139 < Capacity 173

Ø 19.05

Ø 41.28

Ø 22.22

Ø 41.28

173 < Capacity 252 252 < Capacity

Ø 22.22 Ø 25.40

Ø 53.98

Ø 25.40 note1) Ø 28.58

Ø 53.98

*Maximum pipe length : The pipe length between an outdoor unit and the farthest indoor unit.
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
Note2) If Ø 31.75 pipe is not available on site, use Ø 34.92 pipe. Note3) If Ø 38.10 pipe is not available on site, use Ø 41.28 pipe. For the case that the diameter of the default pipe of an outdoor unit does not match that of
the pipe installed on the site, a socket is provided by default together with the outdoor unit.

Size of the pipe between branch joints (B)

Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch.
However, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor unit (A), apply the pipe size (A).

Indoor unit capacity (kW)
Capacity 15 15 < Capacity 25 25 < Capacity 32 32 < Capacity 39 39 < Capacity 44 44 < Capacity 48 48 < Capacity 55 55 < Capacity 66 66 < Capacity 72 72 < Capacity 100 100 < Capacity 139 139 < Capacity 173 173 < Capacity 252
252 < Capacity

Branch pipe length within 45m

Liquid (mm) Ø 9.52

Gas (mm) Ø 15.88 Ø 19.05 Ø 22.22

Ø 12.70

Ø 28.58

Ø 15.88
Ø 19.05 Ø 22.22 Ø 25.40

Ø 34.92 Ø 41.28 Ø 53.98

Branch pipe length between 45~90m

Liquid (mm) Gas (mm)

Ø 19.05

Ø 12.70

Ø 22.22

Ø 25.40 note1)

Ø 15.88

Ø 28.58

Ø 19.05 Ø 22.22

Ø 31.75 note2)
Ø 38.10 note3) Ø 41.28

Ø 25.40 note1) Ø 28.58

Ø 53.98

Indoor unit capacity (kW)
6.0 and below 6.1 ~ 16.0 16.1 ~ 23.0 Over 23.0

Liquid Ø 6.35 Ø 9.52 Ø 9.52 Ø 9.52

Pipe size (O.D. mm)

Gas Ø 12.70 Ø 15.88 Ø 19.05 Ø 22.22

Branch joint

Branch joint between outdoor units (C)

Classification

Model name

Y-joint for outdoor unit (C)

MXJ-TA3419M MXJ-TA4122M

First branch joint (D) Make a selection according to outdoor unit capacity.

Specification (kW) 135.2 and below
Over 135.2

Classification

Model name of the branch joint Outdoor unit capacity (kW)

MXJ-YA1509M

15.0 and below

MXJ-YA2512M

15.1 ~ 40.0

MXJ-YA2812M

40.1 ~ 45.0

Y-joint (D)

MXJ-YA2815M

45.1 ~ 70.3

MXJ-YA3419M

70.4 ~ 98.4

MXJ-YA4119M

98.5 ~ 135.2

MXJ-YA4422M

Over 135.2

Branch joint (E)
Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch. However, if the size of the pipe between branch joints (E) is bigger than the size of the pipe
connected to the outdoor unit (D), apply the pipe size (D).
1) Y-joint

Classification Y-joint (E)
2) Distribution header

Model name MXJ-YA1509M MXJ-YA2512M MXJ-YA2812M MXJ-YA2815M MXJ-YA3419M MXJ-YA4119M MXJ-YA4422M

Specification (kW) 15.0 and below 15.1 ~ 40.0 40.1 ~ 45.0 45.1 ~ 70.3 70.4 ~ 98.4 98.5 ~ 135.2 Over 135.2

Classification Distribution header (E)

Model name MXJ-HA2512M MXJ-HA3115M MXJ-HA3819M

Specification (kW) 45.0 and below (for 4 rooms) 70.3 and below (for 8 rooms)
70.4 ~ 135.2

Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe. Note2) If Ø 31.75 pipe is not available on site, use Ø 34.92 pipe. Note3) If Ø 38.10 pipe is not available on site, use Ø 41.28 pipe.

English 17

Installation Procedure

Refrigerant pipe installation

H/P
When all the following conditions are met, install the main liquid pipe that is one step smaller to reduce piping load and the amount of refrigerant. Note that the refrigerant for the main liquid pipe must be added by the specified amount upon reduction.
Condition 1: In case the length for vertical piping is less than 40 m Condition 2: Max. length A Max. pipping length/{1 - (vertical piping length * 0,015)}
Max. piping length: Piping length between the outdoor unit and the farthest indoor unit (m) · Length allowed to reduce the diameter of liquid pipe, A (equivalent length) · When piping is installed with reduction of the diameter of liquid pipe, Please set option `reduction of the diameter of liquid pipe'."

Capacity (HP)

Below 90 m

Pipe

Max.

diameter length (m)

Over 90m

Pipe

Max.

diameter length (m)

Capacity (HP)

Below 90 m

Pipe

Max.

diameter length (m)

Over 90m

Pipe

Max.

diameter length (m)

This capacity is not supported.

15.88

19.05

130

This capacity is not supported.

15.88

19.05

120

9.52

12.7

200

15.88

19.05

120

9.52

12.7

190

15.88

19.05

110

9.52

12.7

150

19.05

22.22

200

12.7

15.88

200

19.05

22.22

200

12.7

15.88

200

19.05

22.22

200

12.7

15.88

200

19.05

22.22

200

12.7

15.88

200

19.05

22.22

190

15.88

19.05

200

19.05

22.22

180

15.88

19.05

200

19.05

22.22

170

15.88

19.05

200

19.05

22.22

160

15.88

19.05

200

19.05

22.22

150

15.88

19.05

200

19.05

22.22

150

15.88

19.05

200

19.05

22.22

140

15.88

19.05

200

19.05

22.22

130

15.88

19.05

200

19.05

22.22

130

15.88

19.05

200

19.05

22.22

120

15.88

19.05

200

19.05

22.22

120

15.88

19.05

180

This capacity is not supported.

15.88

19.05

170

This capacity is not supported.

15.88

19.05

150

This capacity is not supported.

15.88

19.05

140

This capacity is not supported.

e.g. In case of the site for 20HP, Max. piping length of 140 m (Horizontal piping length of 120 m & Vertical piping length of 20 m):
Max. length A Max. piping length/{1 - (Vertical piping length * 0.015)} 200 m 140 m/{1 - (20 * 0.015)} = 140 m/0.7 = 200 m Thus, the Max. piping length of 140 m (Horizontal piping length of 120 m & Vertical piping length of 20 m) can be allowed. Accordingly, horizontal piping of 120 m + vertical piping of 20 m (140 m in total) can be installed.

18 English

Installation Procedure

H/R

33.6 kW 40.0 kW 61.6 kW

(D)

(F)

(A)

(1)

(2)

(3)

(B)

(C)

(E)

Ex.) 135.2 kW Capacity (kW) No.

33.6

(1)

73.6

(2)

135.2

(3)

Liquid Ø 12.70 Ø 19.05 Ø 19.05

Pipe size (mm)

Gas Ø 28.58 Ø 34.92 Ø 41.28

Size of the pipe connected to the outdoor unit (A)

Size of the pipe between the branch joint and the indoor unit (F)

Select the size of the main pipe according to the below table.

Make a selection according to outdoor unit capacity.

Outdoor unit capacity (kW)
(Cooling)

*Maximum pipe length within 90m

*Maximum pipe length over 90m

Liquid (mm)

Low

High

pressure pressure

gas (mm) gas (mm)

Liquid (mm)

Low

High

pressure pressure

gas (mm) gas (mm)

Capacity 25 25 < Capacity 32 32 < Capacity 39 39 < Capacity 44

Ø 9.52 Ø 12.70

Ø 19.05 Ø 22.22

Ø 15.88 Ø 19.05

Ø 12.70

Ø 22.22 Ø 25.40 note1)

Ø 15.88 Ø 19.05

Ø 28.58 Ø 15.88

44 < Capacity 48

Ø 28.58 Ø 22.22

Ø 22.22

48 < Capacity 55

Ø 31.75 note2)

55 < Capacity 66 Ø 15.88

Ø 19.05

66 < Capacity 72 72 < Capacity 100

Ø 28.58 Ø 34.92

Ø 28.58 Ø 38.10 note3)

100 < Capacity 139 Ø 19.05 139 < Capacity 173

Ø 41.28

Ø 34.92

Ø 22.22

Ø 41.28

Ø 34.92

173 < Capacity 252 Ø 22.22 252 < Capacity Ø 25.40

Ø 53.98

Ø 41.28 Ø 25.40 note1) Ø 53.98 Ø 44.45 Ø 28.58

Ø 41.28 Ø 44.45

*Maximum pipe length : The pipe length between an outdoor unit and the farthest indoor unit.
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
For HR model, only increase the size of the liquid pipe If pipe length exceeds 90m For the case that the diameter of the default pipe of an outdoor unit does not match that of
the pipe installed on the site, a socket is provided by default together with the outdoor unit.

Size of the pipe between branch joints (B)

Indoor unit capacity (kW)

Branch pipe length within 45m

Liquid (mm)

Low

High

pressure pressure

gas (mm) gas (mm)

Branch pipe length between 45~90m

Liquid (mm)

Low

High

pressure pressure

gas (mm) gas (mm)

Capacity 15 15 < Capacity 25

Ø 9.52

Ø 15.88 Ø 19.05

Ø 15.88

Ø 12.70

Ø 19.05 Ø 22.22

Ø 15.88

25 < Capacity 32 32 < Capacity 39 39 < Capacity 44

Ø 12.70

Ø 22.22

Ø 19.05

Ø 25.40 note1) Ø 19.05
Ø 28.58 Ø 15.88

44 < Capacity 48

Ø 28.58 Ø 22.22

Ø 22.22

48 < Capacity 55

Ø 31.75 note2)

55 < Capacity 66 Ø 15.88

Ø 19.05

66 < Capacity 72 72 < Capacity 100

Ø 28.58 Ø 34.92

Ø 28.58 Ø 38.10 note3)

100 < Capacity 139 Ø 19.05 139 < Capacity 173

Ø 41.28

Ø 34.92

Ø 22.22

Ø 41.28

Ø 34.92

173 < Capacity 252 Ø 22.22 252 < Capacity Ø 25.40

Ø 53.98

Ø 41.28 Ø 25.40 note1) Ø 53.98 Ø 44.45 Ø 28.58

Ø 41.28 Ø 44.45

Indoor unit capacity (kW)
6.0 and below 6.1 ~ 16.0 16.1 ~ 23.0 Over 23.0

Liquid Ø 6.35 Ø 9.52 Ø 9.52 Ø 9.52

Pipe size (O.D. mm)

Gas Ø 12.70 Ø 15.88 Ø 19.05 Ø 22.22

Branch joint

Branch joint between outdoor units (C)

Classification

Model name

Liquid/Low pressure Y-joint (C)

MXJ-TA3419M MXJ-TA4122M

High pressure Y-joint (C)

MXJ-TA3100M MXJ-TA3800M

First branch joint (D) Make a selection according to outdoor unit capacity.

Specification (kW) 135.2 and below
Over 135.2 135.2 and below
Over 135.2

Classification

Model name of the branch joint Outdoor unit capacity (kW)

MXJ-YA1509M

15.0 and below

MXJ-YA2512M

15.1 ~ 40.0

Liquid/Low pressure Y-joint (D)

MXJ-YA2812M MXJ-YA2815M MXJ-YA3419M

40.1 ~ 45.0 45.1 ~ 70.3 70.4 ~ 98.4

MXJ-YA4119M

98.5 ~ 135.2

MXJ-YA4422M

Over 135.2

MXJ-YA1500M

22.4 and below

High pressure Y-Joint (D)

MXJ-YA2500M MXJ-YA3100M

22.5 ~ 70.3 70.4 ~ 135.2

MXJ-YA3800M

Over 135.2

Branch joint (E)

Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch.
However, if the size of the pipe between branch joints (E) is bigger than the size of the pipe connected to the outdoor unit (D), apply the pipe size (D)

· Y-joint

Classification
Y-joint (E)
Y-joint (E) (Only H/R)

Model name MXJ-YA1509M MXJ-YA2512M MXJ-YA2812M MXJ-YA2815M MXJ-YA3419M MXJ-YA4119M MXJ-YA4422M MXJ-YA1500M MXJ-YA2500M MXJ-YA3100M MXJ-YA3800M

Specification (kW) 15.0 and below 15.1 ~ 40.0 40.1 ~ 45.0 45.1 ~ 70.3 70.4 ~ 98.4 98.5 ~ 135.2 Over 135.2 22.4 and below 22.5 ~ 70.3 70.4 ~ 135.2 Over 135.2

English 19

Installation Procedure

Refrigerant pipe installation

H/R
When all the following conditions are met, install the main liquid pipe that is one step smaller to reduce piping load and the amount of refrigerant. Note that the refrigerant for the main liquid pipe must be added by the specified amount upon reduction.
Condition 1: In case the length for vertical piping is less than 40 m Condition 2: Max. length A Max. pipping length/{1 - (vertical piping length * 0,015)}
Max. piping length: Piping length between the outdoor unit and the farthest indoor unit (m) · Length allowed to reduce the diameter of liquid pipe, A (equivalent length) · When piping is installed with reduction of the diameter of liquid pipe, Please set option `reduction of the diameter of liquid pipe'.

Capacity (HP)

Below 90 m

Pipe

Max.

diameter length (m)

Over 90m

Pipe

Max.

diameter length (m)

Capacity (HP)

Below 90 m

Pipe

Max.

diameter length (m)

Over 90m

Pipe

Max.

diameter length (m)

This capacity is not supported.

15.88

19.05

130

This capacity is not supported.

15.88

19.05

120

9.52

12.7

200

15.88

19.05

120

9.52

12.7

190

15.88

19.05

110

9.52

12.7

150

19.05

22.22

200

12.7

15.88

200

19.05

22.22

200

12.7

15.88

200

19.05

22.22

200

12.7

15.88

200

19.05

22.22

200

12.7

15.88

200

19.05

22.22

190

15.88

19.05

200

19.05

22.22

180

15.88

19.05

200

19.05

22.22

170

15.88

19.05

200

19.05

22.22

160

15.88

19.05

200

19.05

22.22

150

15.88

19.05

200

19.05

22.22

150

15.88

19.05

200

19.05

22.22

140

15.88

19.05

200

19.05

22.22

130

15.88

19.05

200

19.05

22.22

130

15.88

19.05

200

19.05

22.22

120

15.88

19.05

200

19.05

22.22

120

15.88

19.05

180

This capacity is not supported.

15.88

19.05

170

This capacity is not supported.

15.88

19.05

150

This capacity is not supported.

15.88

19.05

140

This capacity is not supported.

20 English

Additional refrigerant

H/P

H/R

Installation Procedure

46.4 kW Ø12.70 (5 m)

4.5 kW
Ø6.35 (5 m) 5.6 kW
Ø6.35 (10 m) 5.6 kW

Ø12.70 (5 m)
Ø12.70 (5 m) Ø9.52 (10 m)

Ø6.35 (15 m)

Ø9.52 (10 m)

Ø6.35 (5 m)

Ø9.52 (10 m) Ø9.52 (10 m)

Ø9.52 (10 m)

7.1 kW

3.6 kW

Refrigerant pipe installation

61.6 kW (33.6 kW + 28.0 kW)

Ø12.70 (5 m)

Ø9.52 (1m) Ø15.88 (10 m)

Ø12.70 (10 m) MCU

Ø9.52 (10 m)

Ø6.35(15 m) 2.8 kW

Ø9.52 (10 m)

11.2 kW Ø9.52 (15 m)

Ø6.35(2 m)

Ø9.52 7.1 kW (15 m)

7.1 kW

Ø9.52 7.1 kW (18 m)

7.1 kW

Ø9.52 (25 m) 11.2 kW

Ø9.52 (18 m) 7.1 kW

· Basic amount of refrigerant within the outdoor unit (kg) Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length.

Classification

AM080AXVGGH/EU

AM100AXVGGH/EU

AM120AXVGGH/EU

AM140AXVGGH/EU

Basic amount

7.0

8.0

Classification

AM200AXVGGH/EU

AM220AXVGGH/EU

AM240AXVGGH/EU

AM260AXVGGH/EU

Basic amount

10.5

Classification

AM080AXVAGH/EU

AM100AXVAGH/EU

AM120AXVAGH/EU

AM140AXVAGH/EU

Basic amount

5.5

7.0

Classification

AM200AXVAGH/EU

AM220AXVAGH/EU

AM240AXVAGH/EU

AM260AXVAGH/EU

Basic amount

10.5

14.0

Classification

AM100AXVDGH/EU

AM120AXVDGH/EU

AM140AXVDGH/EU

AM160AXVDGH/EU

Basic amount

5.5

7.0

8.0

Classification

AM080AXVGGR/EU

AM100AXVGGR/EU

AM120AXVGGR/EU

AM140AXVGGR/EU

Basic amount

7.0

8.0

Classification

AM200AXVGGR/EU

AM220AXVGGR/EU

AM240AXVGGR/EU

AM260AXVGGR/EU

Basic amount

10.5

14.0

· Amount of additional refrigerant depending on the pipe size ( ) Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length.

AM160AXVGGH/EU 10.5
AM160AXVAGH/EU 8.0
AM180AXVDGH/EU 8.0
AM160AXVGGR/EU 10.5

AM180AXVGGH/EU 10.5
AM180AXVAGH/EU 8.0
AM180AXVGGR/EU 10.5

Size of liquid pipe

Ø 6.35

Ø 9.52

Ø 12.70

Ø 15.88

Ø 19.05

Ø 22.22

Ø 25.40

Additional amount (kg/m)

0.02

0.06

0.125

0.18

0.27

0.35

0.53

Amount of

refrigerant added

when the diameter

of liquid pipe is

reduced (kg/m)

0.08

0.13

0.195

0.28

0.42

0.53

For the indoor unit already connected to EEV kit, the additional refrigerant charging is 0.01kg per meter regardless of the pipe size.

Ø 28.58 0.65
-

English 21

Refrigerant pipe installation

Installation Procedure

· Amount of additional refrigerant for each indoor unit ( )

(Unit: kg)

Model

Refrigerant Amount (kg /Unit) 1.5 1.7 2.2 2.8 3.2 3.6 4.0 4.5 5.6 6.0 7.1 8.2 9.0 9.3 11.0 11.2 12.8 14.0 16.0 18.0 22.0 22.4 25.0 28.0 32.0 50.0 500CMH 1000CMH

Interior1way cassette (JSF-0)

(AM***HN1DEH/**) (AM***NN1PEH/**)

0.15 0.15

Slim 1way cassette (JSF-1/JSF-2) (AM***F(J/N)N1DEH/**)

0.25 0.25 0.25

0.32 0.32

2way cassette (AM****N2DEH/**)

0.31 0.47

4way cassette S(600x600) (AM****NNDEH/**)

0.29

0.29 0.29

0.29

0.37 0.37 0.37

4way cassette S (AM***F(N)N4DEH/**)

0.45 0.45 0.45 0.45

0.57 0.69 0.69

4way cassette S (AM****N4FEH/**)

0.69 0.69 0.69 1.00 1.00 1.00 1.00 1.00 1.00

360 cassette (AM***KN4DEH/**)

0.45 0.45 0.45 0.45

0.69 0.69 0.69

Duct S (AM****NMPKH/**)

0.22 0.22 0.22 0.22 0.31

0.38 0.38 0.38

Duct S (AM****NMPKH9**)

0.31 0.31 0.38 0.38 0.38

Duct S (AM***HNHPKH/**)

0.38 0.38 0.38

Home Duct (AM***KNLDEH/**) 0.13 0.13 0.13 0.17

Home Duct (AM***MNLDEH/**)

0.24 0.24 0.31

Slim duct (AM***FNLDEH/**) 0.17 0.17 0.17 0.26 0.35 0.35 0.45 0.42

0.42 0.62 0.62

Slim duct(with drain pump) (AM***KNLDEH/**)

0.35 0.35 0.45 0.42

0.42 0.62 0.62

Slim duct (AM***FNLF(P)EH/**)

0.62 0.45 0.45 0.62 0.62

0.62

Slim duct (AM***NNLFEH/**)

0.62 0.62

MSP duct (AM****NMDEH***)

0.24 0.24 0.24 0.28 0.28 0.28 0.32

0.54 0.68 0.68 0.91

HSP duct (AM****NHDEH/**)

0.68 0.68 0.68

1.18

HSP duct (AM****NHF(P)EH/**)

1.18

1.18 1.18 1.18 1.18 1.18

1.18

Big duct (AM***JNHF(P)KH/**)

1.15 1.15

OAP duct (AM****NEPEH/**)

0.68

1.18

Concealed Floor Standing (AM****NFDEH/**)

0.22

0.32 0.32

Floor Standing (AM****NPDKH/**)

0.69

1.85

Ceiling (AM****NCDEH/**) (AM****NCDKH/**)

0.39 0.39

0.56 0.95

Console (AM****NJDEH/**)

0.16 0.27 0.27 0.27 0.27

Wall mounted (Neo forte) (AM***F(H)NTDEH/**)

0.24

0.24 0.24

0.24

0.36 0.36

Wall mounted(Neo forte with EEV) (AM***F(H)NQDEH/**)

0.34

0.34 0.34

0.34

0.51 0.51

0.51

Wall mounted(AR5000) (AM****NADKH/**)

0.16

0.16 0.19

0.25

0.25 0.52

0.52 0.52

Wall mounted(AR5000 with EEV) (AM****NVDE(K)H/**)

0.22

0.22 0.25

0.34

0.34 0.71

0.71 0.71

Wall mounted(Boracay) (AM***KNTDEH/**)

0.24

0.24 0.32

0.32

0.49 0.49

0.49

Wall mounted(Boracay with EEV) (AM***KNQDEH/**)

0.24

0.24 0.32

0.32

0.49 0.49

0.49

Wall mounted(MAX4 with EEV) (AM***MNQDEH/**)

0.68

ERV plus (AM****NKDEH/**)

0.11 0.36

Hydro Unit HE (AM****NBDEH/**)

0.60

0.70 1.20

Hydro Unit HT (AM****NBF*B/**)

0.60 note1)

MCU (MCU-S*NE**N)

0.50

4Way CST (AM***AN4PKH/**)

0.45 0.45 0.45 0.60 0.60 0.73

0.73 0.88 0.88

LSP Duct (AM***ANLDKH/**) 0.13 0.13 0.13 0.17 0.24 0.24 0.31

MSP Duct (Duct S) (AM***ANMPKH/**)

0.45 0.45 0.45 0.45 0.45 0.45 0.80

0.84 0.84 0.84

HSP Duct (Duct S) (AM***ANHPKH/**)

0.80 0.80 0.84

0.84 0.84 0.84

A3050 (AM***JNADKH/**) 0.16 0.16 0.19 0.25 0.25 0.52 0.52 0.52

A3050(with EEV) (AM***JNVDKH/**)

0.22

0.22 0.25

0.34

0.34 0.71

0.71 0.71

QMD RAC (AM***TNADKH/**)

(AM***TNVDKH/**) 0.23 0.23 0.32 0.32 0.48 0.48 0.48 0.64 (AE***TNXDEG/**)

If there is no additional refrigerant value for the indoor unit in the above table, refer to the indoor unit installation manual.

22 English

Installation Procedure

· If AHU kit is included among the indoor units, you must add 0.063kg of refrigerant for every 1kW of the AHU capacity increase.
Note1) In case the capacity conjunction of the Hydro Unit HT exceeds 50 % among the total indoor unit, please don't put the additional refrigerant.
· Method to calculate total amount of additional refrigerant
Amount of additional refrigerant depending on the pipe length ( )
Amount of additional refrigerant for each indoor unit ( ) = (Amount of additional refrigerant for each connected indoor unit) Refer to the table
Total amount of additional refrigerant = +
Sum of total amount of additional refrigerant and the basic amount of refrigerant should not exceed 100kg. If the refrigerant exceeds 100kg, separate the module so that weight of the refrigerant doesn't exceed 100kg.
Ex> If the outdoor unit's basic refrigerant amount is 10.5kg, the total amount of additional refrigerant( + ) should not exceed 89.5kg. · Example of refrigerant calculation for HP models

Classification Liquid pipe ( )

Size of liquid pipe
Ø 6.35 Ø 9.52 Ø 12.70

Length (m)
35 50 15

Unit amount of refrigerant (kg/m)
0.02 0.06 0.125

Amount of additional refrigerant (kg)
× 0.7 3.0 1.875

Total amount of additional refrigerant (kg)
( × )
5.575

Classification

Model name of indoor unit

Number of units

4way cassette (AM071FN4DEH*)

Slim duct (AM056FNLDEH*)

Indoor unit ( )

Slim duct (AM045FNLDEH*)

1way cassette (AM036FN1DEH*)

Total amount of refrigerant ( + ) = 5.575+3.10 = 8.675 (kg)

· Example of refrigerant calculation for HR models

Classification

Size of liquid pipe

Length (m)

Unit amount of refrigerant (kg/EA)
0.45 0.35 0.35 0.25
Unit amount of refrigerant (kg/m)

Ø 6.35

0.02

Ø 9.52

112

0.06

Liquid pipe ( )

Ø 12.70

0.125

Ø 15.88

0.18

Ø 6.35 (EEV Kit ~ indoor unit)

0.01

Amount of additional refrigerant (kg)
×

Total amount of additional refrigerant (kg)
( × )

1.80

0.70 3.10
0.35

0.25

Amount of additional refrigerant (kg) × 0.3 6.72 3.125 1.8

Total amount of additional refrigerant (kg)
( × )
11.965

0.02

Classification

Model name of indoor unit

Number of units

Unit amount of refrigerant (kg/EA)

4way cassette (AM071FN4DEH*)

0.45

Indoor unit ( )

4way cassette (AM112FN4DEH*)

0.57

Neo forte (AM028FNTDEH*)

0.27

MCU

0.5

Total amount of refrigerant ( + ) = 11.965+4.66 = 16.625 (kg)

Amount of additional refrigerant (kg) × 2.25
1.14
0.27 1

Total amount of additional refrigerant (kg)
( × )
4.66

English 23

Refrigerant pipe installation

Temper grade and minimum thickness of Refrigerant pipe welding and safety

the refrigerant pipe

information

Outer diameter (mm)

Minimum thickness (mm)

Temper grade

Ø 6.35

0.70

Ø 9.52 Ø 12.70

0.70 Annealed
0.80

Ø 15.88

1.00

Ø 19.05

0.90

Ø 22.22

0.90

Ø 25.40

1.00

Ø 28.58

1.10

Ø 31.75

1.10

Ø 34.92

1.20

Drawn

Ø 38.10

1.35

Ø 41.28

1.43

Ø 44.45

1.60

Ø 50.80

2.00

Ø 53.98

2.10

· The material specification (thickness) of the refrigerant pipes must be in accordance with EU and/or local legislation and standards.

CAUTION
· For pipes larger than Ø 19.05, drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be used. If a annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure resistance and cause personal injury.

Keeping refrigerant pipe

To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially during installation) is very important. Apply correct sealing method depending on the environment.

Exposure place Outdoor

Exposure time
Longer than one month
Shorter than one month

Sealing type Pipe pinch
Taping

Indoor

Taping

CAUTION
· Important information for refrigerant pipe work. Make sure there is no moisture inside the pipe. Make sure there are no foreign substances and impurities in the pipe. Make sure there is no leakage. Make sure to follow the instruction when welding or storing the pipe.
Nitrogen flushing welding
· When welding the refrigerant pipes, flush them with nitrogen gas as shown in the picture.
· If you do not perform nitrogen flushing when welding the pipes, oxide may form inside the pipe. It can cause the damage of the important parts such as compressor and valves etc.
· Adjust the flow rate of the nitrogen flushing with a pressure regulator to maintain 0.05m3/h or less.

Welding part

Ø 6.35 copper pipe

Nitrogen gas Pressure regulator Taping

Stop valve

Flowmeter

High pressure hose

Direction of the pipe when welding
· Direction of the pipe should be headed downward or in a sideways when welding.
· Avoid welding the pipe with pipe direction heading upward.
CAUTION
· When you test gas leakage after welding the pipes, use a designated solution for gas leakage detection. If you use the detection solution that includes sulfuric ingredient, it may cause corrosion to the pipes.

Nitrogen gas
Installation Procedure

24 English

Installation Procedure

Cutting or flaring the pipes
1 Make sure that you prepared the required tools. Pipe cutter, Deburring tool, flaring tool and pipe holder, etc.
2 If you want to shorten the pipe, cut it with a pipe cutter ensuring that the cut edge remains at 90° with the side of the pipe. Refer to below illustrations for correct and incorrect examples of cut edges.

90°

Oblique

Rough

Burr

3 To prevent a gas leak, remove all burrs at the cut edge of the pipe using a Deburring tool.
4 Carry out flaring work using flaring tool as shown below.
[Flaring tools]

Clutch type A

Wing nut type Yoke

5 Check that you flared the pipe correctly.
Refer to below illustrations for correct and incorrect examples of flared pipe.

Correct

Inclined

Damaged Surface

Cracked

Uneven Thickness

CAUTION
· If foreign matters or burrs are not removed after cutting pipe, refrigerant gas may leak.
· If foreign matters enter inside the pipe, important interior parts of the unit may get damaged or product efficiency will be reduced. So, the direction of pipe should be downward during pipe cutting or flaring.
Connecting the flared pipes
· Check if the flaring is properly done according to the standard size.
· Align the center of the piping and tighten the flare nut with your hands. Then, tighten the flare nut with torque wrench in a direction of the arrow indicated in below illustration.
· Make sure to use ester oil to coat the flare connection section.
Pipe
Monkey wrench

Flaring bar Pipe

Flaring bar
Pipe Flare nut

Flare connection section

Flare nut

Torque wrench

Depth of flaring part [A (mm)]

Pipe diameter

Using flaring

Using conventional flaring tool

A [D (mm)] tool for

Clutch Wing nut

R-410A

type

Ø 6.35

0~0.5

1.0~1.5

1.5~2.0

Ø 9.52

0~0.5

1.0~1.5

1.5~2.0

Ø 12.70

0~0.5

1.0~1.5

1.5~2.0

Outer diameter (D, mm)
Ø 6.35
Ø 9.52 Ø 12.70
Ø 15.88
Ø 19.05

Connection torque (N·m)
14~18
34~42
49~61
68~82
100~120

Flare dimension
(L, mm)
8.7~9.1
12.8~13.2
16.2~16.6
19.3~19.7
23.6~24.0

90° ±2° 45° ±2°

Flare shape (mm)

R 0.4~0.8

Ø 15.88

0~0.5

1.0~1.5

1.5~2.0

CAUTION

· Blowing Nitrogen gas should be done when welding the pipe.
· Make sure to use the provided flare nut.
· Make sure that there are no cracks or twisted part when you need to bend the pipe.
· Do not fasten the flare nut with excessive strength.
· R-410A is a high pressure refrigerant and there is a risk of refrigerant leakage if the flare connection is not coated with ester oil. Therefore, apply ester oil to coat the flare connection area.

English 25

Refrigerant pipe installation

Pipe installation for an outdoor unit
1 Direction of the pipe Refrigerant pipe can be withdrawn from the front, left and right side. Take necessary method to install the pipes according to the condition of the installation site.

CAUTION
· Caution for using knock-out hole

Left side connection

Front side connection

Right side connection

Knock-out hole
· Make sure to prevent any damages on the exterior of the outdoor unit.
· Remove all burrs around the knock-out hole and apply varnish on the cross section and edges of the knock-out hole to prevent rust.
· Use a cable protection tube and bushing to prevent a cable from being damaged when passing through a knock-out hole.

1 Connecting refrigerant pipe for outdoor unit

Classification Working process

Front side connection
· First, remove the piping cover from the outdoor unit. · Separate the knock-out hole that you are going to use. If
you separate the knock-out hole that is going to be unused, small animals such as squirrels and rats may get into the unit through the hole. · Fix the bottom side of the piping cover first and then fix the top part of it.

Right/left (and bottom) side connection
· Separate the knock-out hole at the bottom side of the unit and install the pipe.
· After installing and insulating the pipe, close up the remaining holes. If not, small animals such as rats and squirrels may get inside the unit.

H/P Gas side pipe

Liquid side pipe

Gas side pipe

Liquid side pipe

Installation Procedure

H/R
Low pressure gas pipe

High pressure gas pipe
Liquid side pipe

Low pressure gas pipe

High pressure gas pipe
Liquid side pipe

CAUTION
· Caution for welding the pipe to an outdoor unit
When welding the pipe, the unit may get damaged by the heat and flame from welding. Use a flame proofing cloth to protect the unit from a welding fire or flame. Sensor for detecting outside temperature is located on the left side of the welding part so be extra careful not to damage the sensor when welding.
The O-ring and Teflon packing inside service valve may get damaged by the heat from welding. Wrap the bottom side of the service valve with a wet cloth and weld it as shown in the illustration. Also, water dripping from the wet cloth may interrupt the welding. Make sure the water does not drip from the wet cloth.
Make sure that connected pipes does not interrupt each other or make contact with the product. (Vibration may cause damage to the pipes.)
When removing the sealed pipe on the bottom side of the service valve, cut it with a pipe cutter first and then start the welding. When the sealed pipe is welded without cutting, you may get injured by the refrigerant within the pipe.

26 English

Service port

Service valve

Service port

Service valve

Temperature sensor

Wet towel < H/P >

Temperature sensor

Wet towel < H/R >

1 Pipe installation between the outdoor units · You will need branch joints, which is an optional accessory, for connecting in between outdoor units in order to combine outdoor units
in module. For optimal distribution of the refrigerant, you must use Y-joint as branch joint for connecting outdoor units. (Do not use T-joint) · When you install the outdoor units in module, there is no restriction of installation order among outdoor units. · Height of the connection pipe should be same or lower than the ones connected to the outdoor units. · Check the changes in comparison with the DVM , and .

Caution

Correct installation

Incorrect installation

Refrigerant pipes should be connected at the same or lower level than the ones connected
to the outdoor unit.

Installation Procedure

Refrigerant pipes must be connected by the side of the
product.
Branch joint between outdoor units must be installed horizontally.

Straight section should be 300mm or more

Install a vertical trap in following cases as shown in the figure : Case1. Pipe length between outdoor unit branches exceeds 2m. Case2. Pipe length between outdoor unit and its branch exceeds 2m.

200 ~ 300 mm
1 m or less Over 2 m
200 ~ 300 mm
1 m or less Over 2 m

Over 2 m Over 2 m
English 27

Refrigerant pipe installation
Examples of refrigerant pipe installation
H/P
1 Using Y-joint

Installation Procedure

2 Using distribution header

H/R
Using Y-joint

MCU MCU

MCU

MCU Note 1)

MCU MCU

Note 1) Direct-connected indoor unit without MCU (for HR only) This indoor unit can only be used for cooling operation. (Heating operation is not possible.) Connect indoor unit to liquid and low pressure gas pipe. Change the installation option for direct-connected indoor unit without MCU. (refer to the indoor unit installation manual)
28 English

Installation Procedure

Allowable length of the refrigerant pipe and the installation examples

H/P

Classification

Outdoor unit

Single Installation

Module installation Outdoor unit

Installing only with Y-joint
Installing with Y-joint and distribution header

Branch joint

bcde f g

aA B C D E F G

h i j k lmn

7 H2

8
Indoor unit

Branch joint

bcde f g

aA B C D E F G

h i j k l mn

7 H2

Indoor unit

Outdoor unit

Branch joint

i Distribution header

H1 a

cde

f gh

123456

Indoor unit

Outdoor unit
A a
b cde
123
Indoor unit

Distribution header

Branch joint

f gh

456

Outdoor unit

Installing only with distribution header

a
bcd
123
Indoor unit

Distribution header

e
4

f
5

g
6

h 7 H2

Distribution header

bcd
123
Indoor unit

e
4

f
5

g
6

h 7 H2

Classification

Actual length (Equivalent length)

Maximum allowable length of pipe

Outdoor unit ~ Indoor unit

Total length of pipe (m)

Outdoor unit ~ Outdoor unit (Module installation)

Pipe length
Equivalent length

200m and below (220m and below)
1,000 m or less
10 m or less 13 m or less

Installing only with Y-joint

Example
a+b+c+d+e+f+g+p 200m(220m)

Installing with Y-joint a+b+h 200m (220m), and distribution header a+i+k 200m (220m)

Installing only with distribution header

a+i 200m (220m)

Installing only with Y-joint

a+b+c+d+e+f+g+h+i+ j+k+l+m+n+p 1000m

Installing with Y-joint a+b+c+d+e+f+g+h+i+j+k and distribution header 1000m

Installing only with distribution header

a+b+c+d+e+f+g+h+i 1000m

x 10 m, y 10m, z 10 m

x 13 m, y 13m, z 13 m

Maximum allowable height difference of pipe

Outdoor unit ~ Indoor unit
Indoor unit ~ Indoor unit

110/110m Note 2)

H1 110/110m

50m or less

H2 50m

But, when AM****NQDEH* / AM***JNV* is installed, H2 is 15 m or less.

Remarks
Equivalent length Y-joint: 0.5 m, Distribution header: 1 m
-
xy z

English 29

Refrigerant pipe installation

Classification

Maximum allowable length after branch joint

First branch joint ~ Farthest Indoor unit

Pipe length

45 m or less
45 m~90 m
Note 1)

Example

Installing only with Y-joint

b+c+d+e+f+g+p 45 m

Installing with Y-joint and distribution header

i+k 45 m

Installing only with distribu-tion header

i 45 m

Required conditions must be satisfied

Remarks -

EEV kit 2 m

EEV kit ~ Indoor unit

Actual pipe length

20 m or less

Please refer to the EEV Kit manual. Note 1) Required condition

MEV-E24SA MEV-E32SA MXD-E24K132A MXD-E24K200A MXD-E32K200A MXD-E24K232A MXD-E24K300A MXD-E32K224A MXD-E32K300A

Model name 1 indoor 2 indoor
3 indoor

Remarks
Apply to products without EEV (Wall mount & ceiling)

Classification

Condition

Example

First branch joint ~ 45m b+c+d+e+f+g+p 90m: branch pipes (b, c, d, e, f, g) size must

Farthest Indoor unit

be increased by 1 grade

Total length of extended pipe
Each Y-joint ~ Each indoor unit

If the size of pipe (main pipe), between the first branch joint and the outdoor unit, is not increased by 1 grade, a+(b+c+d+e+f+g)×2
+h+i+j+k+l+m+n+p 1000 m
If the size of pipe (main pipe), between the first branch joint and the outdoor unit, is increased by 1 grade, (a+b+c+d+e+f+g)×2 +h+i+j+k+l+m+n+p 1000 m
h, i, j, ... p 45 m

bcde f g

aA B C D E F G

h i j k lmn

7 H2

Difference between the distance of the outdoor unit to the farthest indoor unit and nearest indoor unit 45m, (a+b+c+d+e+f+g+p)-(a+h) 45m

Note 2) When indoor unit is located at higher level than outdoor unit, allowable height difference is 110m, (If the height difference is over 40m, contact your local dealer for more information.) but when the indoor unit is located at lower level than outdoor unit, allowable height difference is 110m (If the height difference is over 50m, need to decide whether to install PDM kit or not.) Model name of the PDM kit : MXD-A38K2A, MXD-A12K2A, MXD-A58K2A

Installation Procedure

30 English

H/R
Classification

Installation with Y-joint

Installation Procedure

Installing with MCU only
Installing with MCU and Y-joint

MCU b

MCU h

j H1

Direct-connected indoor unit without MCU (Cooling only) (Connecting Only Low Pressure Gas Pipe / Liquid Pipe note3) r
m

MCU n

MCU c

MCU i

de f

Maximum allowable pipe length
Maximum allowable
height difference
Maximum allowable length after branch joint

Classification

Outdoor unit ~ Indoor unit

Actual pipe length
(Equivalent length)
Total length of pipe

Outdoor unit ~ Outdoor
unit (Module installation)

Pipe length
Equivalent length

MCU ~ Indoor unit

Pipe length

Outdoor unit ~ Indoor unit
Indoor unit ~ Indoor unit
Indoor unit ~ Indoor unit (in one MCU)
MCU ~ MCU

Pipe length

First branch joint ~ Farthest
Indoor unit

Pipe length

200 m or less (220 m or less)
1000 m or less
10 m or less

Installing only with MCU

Example a+g+j 200 m (220 m)

Installing with MCU and Y-joint

a+b+h+k 200 m (220 m)

Installing only with MCU

a+b+c+d+e+f+g+h+i+j 1000 m

Installing with MCU and Y-joint

a+b+c+...+r 1000 m

x 10 m, y 10m, z 10 m

13 m or less

x 13 m, y 13m, z 13 m

45 m or less
110 m / 110 m
Note 1)

Installing only with MCU
Installing with MCU and Y-joint

b+c 45 m, b+d 45 m, b+e 45 m, f 45 m, g+h 45 m, g+i 45
m, g+j 45 m
c+d, c+e, c+f, g, h+i, h+j, h+k, n, o, p, q, r 45 m

H1 110 m / 110 m

40 m or less

H2 40 m

But, when AM****NQDEH* / AM***JNV* is installed, H2 is 15 m or less.

15 m or less

H3 15 m

30 m or less

H4 30 m

Installing only with MCU

g+j 45 m

45 m or less

Installing with MCU and Y-joint

b+h+k 45 m l+m+q 45 m
l+r 45 m

45 ~ 90 m Note 2)

Required conditions must be satisfied

Remarks Equivalent length
Y-joint: 0.5 m Distribution header: 1 m
MCU: 1 m
xy z

English 31

Refrigerant pipe installation

EEV Kit

Model name

Remarkers

MEV-E24SA 2 m
MEV-E32SA

1 indoor

MXD-E24K132A

EEV kit ~ Indoor unit

Actual pipe length

20 m or less

MXD-E24K200A MXD-E32K200A MXD-E24K232A

2 indoor

Apply to products without EEV (Wall mount & ceiling)

MXD-E24K300A MXD-E32K222A

3 indoor

MXD-E32K300A

Please refer to the EEV Kit manual.
Note 1) When indoor unit is located at higher level than outdoor unit, allowable height difference is 110m, (If the height difference is over 40m, contact your local dealer for more information.) but when the indoor unit is located at lower level than outdoor unit, allowable height difference is 110m (If the height difference is over 50m, need to decide whether to install PDM kit or not.) Model name of the PDM kit : MXD-A38K2A, MXD-A12K2A, MXD-A58K2A
Note 2) Required condition

Classification

Condition

Example

First branch
joint ~ Farthest Indoor unit

45 m b+h+k, l+m+q, l+r 90 m : Size of the branch liquid and low pressure gas pipes (b, l, m) must
be increased by 1 grade.

If the size of pipe (main pipe), between the first branch joint
and the outdoor unit, is not

r m

increased by 1 grade, a+(b+l+m)

x2+c+d+e+f+g+h+i+j+k+n+o+p+q+r

Total length of

1000 m

MCU n

extended pipe

If the size of pipe (main pipe), between the first branch

joint and the outdoor unit, is increased by 1 grade, (a+b+l+m)

x2+c+d+e+f+g+h+i+j+k+n+o+p+q+r

MCU c

MCU i

de f

1000 m

MCU ~ Each c+d, c+e, c+f, g, h+i, h+j, h+k, n, o,

indoor unit

p, q, r 45 m

Difference between the distance of the outdoor unit to the farthest indoor unit and nearest indoor unit
45 (a+b+h+k) - (a+b+c+d) 45

Note 3) For indoor units to which no MCU is connected, be sure to set their options to "Cooling only indoor unit," and then connect them to a low pressure gas pipe and a liquid pipe. Be sure to combine the cooling only indoor units so that their total capacity becomes 50% or less of the total capacity of all indoor units.
Note 4) In case of connecting more than one indoor unit in one MCU Port, the below indoor units cannot be combined. ERV plus (AM***FNKDE**), OAP duct(AM***JNEPE**), Hydro Unit HE(AM***FNBD**), Hydro Unit HT(AM***FNBF**), AHU kit (MXDK***AN, MCM-D***N)
Note 5) In case of connecting two MCU ports with Y-joint, the indoor units cannot be combined to more than one.

Installation Procedure

32 English

Installing the branch joints
Branch joints must be installed `horizontally' or `vertically'.
Horizontal installation

Installing the distribution header
1 Select the reducer that fits the diameter of the pipe.

Pipe*

Provided item Socket
Pipe*

Vertical installation
NOTE · For A~J type branch joints : Connect the branch joint to the
connection pipe with the provided reducer. · For K~Z type branch joints : Cut the connection part of the
branch joint or the provided socket, according to the diameter of the connection pipe, before connecting them.

To outdoor unit Pipe*

Socket <Liquid side>

To indoor unit
Socket Pipe *

To outdoor unit

Socket <Gas side>

To indoor unit

Pipe : Separately purchased item
2 If the number of connected indoor unit is fewer than ports on the distribution header, block the unused ports with caps.

Welding part Provided item

Connect in order

Connect in

order

Installation Procedure

Over 10~15mm

CAUTION
· Install the branch joint within ±15° of the horizon or vertical line. · Make sure that the pipe is not bent at where it is connected to
the branch joint.
· Keep a minimum straight line distance of 500mm or more before connecting branch joint.

After branching

Connect to other branch joint or indoor unit

Socket Pipe

Pipe connection
Socket After branching

Connect to indoor unit

Gas side/Liquid side branch joint Before branching

Install indoor units from largest to smallest capacity, starting at the inlet of the header.

Install
Case of blocking the unused distribution header ports.

* Keep unused port from to avoid oil trap.

Connect in order

Install indoor units from largest to smallest capacity, starting at the inlet of the header.

Install
Case of blocking the unused distribution header ports.

* Keep unused port from to avoid oil trap.

NOTE
· For A~J type distribution header : Connect the distribution header to the connection pipe with the provided reducer.
· For K~Z type distribution headers : Cut the provided socket, according to the diameter of the connection pipe, before connecting it.

Minimum straight line (over 500mm)
Install within ±15° of the horizon or vertical line.

Over 10~15mm
English 33

Installation Procedure

Refrigerant pipe installation

CAUTION
· Connect the indoor units in order, while respecting the direction of the arrow shown in the illustration.
· When indoor units are connected to same distribution head, indoor unit must be connected in order of their capacity, from largest to smallest.
· Keep unused port from to avoid oil trap.
1 Install the distribution header horizontally. Install the distribution header horizontally so that its ports does not face down.

Horizon Socket line

Distribution header

Pipe (Separately purchased item)

Below ±10°

Horizon line
Below ±15°
< Liquid side >
Horizon line

Horizon line Below ±15°

Reducer

To other outdoor unit Pipe
To other outdoor joint or outdoor unit

Reducer Pipe
To other outdoor joint or Y-joint of the main pipe

Reducer

<Liquid side> Pipe
Reducer

To other outdoor unit
To other outdoor joint or outdoor unit

Pipe To other outdoor joint or Y-joint of the main pipe

Horizon line

Below ±10°

< Gas side >
Installing the branch joint between outdoor units
Installation of outdoor joints

Gas pipe

High pressure gas pipe
Liquid pipe

Do not install the outdoor joint in this direction.

High pressure gas pipe only applies to the H/R product.

Reducer Pipe

<Gas side> Pipe
Reducer

To other outdoor unit
To other outdoor joint or outdoor unit

To other outdoor joint or Y-joint of the main pipe

<High pressure gas side>
Use the attached reducer according to the selected pipe size.
NOTE · Connect the Outdoor joint to the pipe by cutting the outlet of the
Outdoor joint or provided reducer properly.

10~15 mm or more

34 English

Installation Procedure

Installing the MCU

MCU specification

Model

MCU-S6NEK2N

MCU-S4NEK3N

MCU-S2NEK2N

MCU-S1NEK1N

Exterior of MCU

Number of connectable indoor units at one port
The maximum capacity of the connectable
indoor units at one port
The maximum capacity of the connectable indoor units
Internal EEV

Up to 8 units 16 kW 61.6 kW

Up to 8 units 16 kW

61.6 kW Not included

32.0 kW

CAUTION
· Indoor units without internal EEV(AM****NTDE*, AM****NADE*) can not be connected directly to the MCU. · Please connect these indoor units using EEV kit(MEV-E**SA, MXD-E**K***A).

Installing the indoor units

Model

MCU-S6NEK2N

MCU-S4NEK3N

MCU-S2NEK2N

Up to 8 units 16 kW 16 kW
MCU-S1NEK1N

Example installing (Each port connection)

Example installing

MCU

(MCU series connection)

Installing indoor units

Under 16.0 kW indoor unit : Don't use Y-connector 16.0 kW ~ 28.0 kW indoor unit : Use Y-connector at the Gas & Liquid line
If you want to continuous cooling operation under -5 , set outdoor `Expand operational temperature range for cooling operation (HR only)', and use Y-connector on 5.0 ~ 16 kW indoor unit
In case of using Y-connector, it is only connectable for port combination at below Connectable port combination for Y-connector : A + B port, C + D port, E + F port Non-connectable port combination for Y-connector : B + C port, D + E port, non-continuous port
Set Dip Switch option for using Y-connector

S/W Option ON

This unit is only connectable for one port under 16 Kw
This unit is impossible to connect MCU to MCU in series.

1 234
Default

1 234

Combination of A+B port Combination of C+D port Combination of E+F port

In case of MCU connection in series, the maximum capacity of indoor units in MCU series connection is 61.6 kW

English 35

Refrigerant pipe installation
How to connect the pipes

70 mm

Protect with wet towel when welding

70 mm
Pipe connection from outdoor unit Default installing direction. Low pressure gas pipe connection (welding) High pressure gas pipe connection (welding) Liquid pipe connection (welding)
Pipe connection to indoor unit

Liquid pipe (welding)

Gas pipe (welding)

When installing MCU, use the pattern sheet for installation that is provided with the product.
When welding the gas pipes, protect the product with the flame-proof sheet.
When connecting the MCU with outdoor units, default direction is set in the MCU. If installing opposite direction, weld the enclosed copper cap in each high pressure, low pressure and liquid pipes.

Installation Procedure

36 English

Installation Procedure

Electrical wiring work

Specification of the circuit breaker and power cable

Premium Energy Efficiency Type (Heat Pump)

Standard Type (Heat Pump)

Model

MCA

MFA

Model

MCA

MFA

AM080AXVGGH

18.0

AM080AXVAGH

18.0

AM100AXVGGH

21.2

AM100AXVAGH

23.0

AM120AXVGGH

25.0

AM120AXVAGH

25.0

AM140AXVGGH

27.0

AM140AXVAGH

29.0

AM160AXVGGH

32.0

AM160AXVAGH

32.0

AM180AXVGGH

39.2

AM180AXVAGH

39.2

AM200AXVGGH

43.0

AM200AXVAGH

43.0

AM220AXVGGH

46.0

AM220AXVAGH

46.0

AM240AXVGGH

55.0

AM240AXVAGH

55.0

AM260AXVGGH

60.0

AM260AXVAGH

60.0

AM280AXVGGH

60.4

AM280AXVAGH

61.0

AM300AXVGGH

64.2

AM300AXVAGH

64.2

AM320AXVGGH

68.0

AM320AXVAGH

73.0

AM340AXVGGH

71.2

AM340AXVAGH

78.0

AM360AXVGGH

78.4

AM360AXVAGH

80.0

AM380AXVGGH

82.2

AM380AXVAGH

84.0

100

AM400AXVGGH

86.0

100

AM400AXVAGH

87.0

100

AM420AXVGGH

89.0

100

AM420AXVAGH

94.2

125

AM440AXVGGH

99.2

125

AM440AXVAGH

98.0

125

AM460AXVGGH

103.0

125

AM460AXVAGH

101.0

125

AM480AXVGGH

106.0

125

AM480AXVAGH

110.0

125

AM500AXVGGH

115.0

150

AM500AXVAGH

115.0

150

AM520AXVGGH

120.0

150

AM520AXVAGH

120.0

150

AM540AXVGGH

120.4

150

AM540AXVAGH

119.2

150

AM560AXVGGH

124.2

150

AM560AXVAGH

128.0

150

AM580AXVGGH

128.0

150

AM580AXVAGH

133.0

150

AM600AXVGGH

131.0

150

AM600AXVAGH

135.0

150

AM620AXVGGH

141.2

175

AM620AXVAGH

139.0

175

AM640AXVGGH

145.0

175

AM640AXVAGH

142.0

175

AM660AXVGGH

146.0

175

AM660AXVAGH

149.2

175

AM680AXVGGH

149.0

175

AM680AXVAGH

153.0

175

AM700AXVGGH

159.2

175

AM700AXVAGH

156.0

175

AM720AXVGGH

163.0

200

AM720AXVAGH

165.0

200

AM740AXVGGH

166.0

200

AM740AXVAGH

170.0

200

AM760AXVGGH

175.0

200

AM760AXVAGH

175.0

200

AM780AXVGGH

180.0

200

AM780AXVAGH

180.0

200

AM800AXVGGH

173.0

200

AM800AXVAGH

183.0

225

AM820AXVGGH

178.0

200

AM820AXVAGH

188.0

225

AM840AXVGGH

185.2

225

AM840AXVAGH

190.0

225

AM860AXVGGH

189.0

225

AM860AXVAGH

194.0

225

AM880AXVGGH

198.4

225

AM880AXVAGH

197.0

225

AM900AXVGGH

202.2

225

AM900AXVAGH

204.2

225

AM920AXVGGH

206.0

250

AM920AXVAGH

208.0

250

AM940AXVGGH

209.0

250

AM940AXVAGH

211.0

250

AM960AXVGGH

219.2

250

AM960AXVAGH

220.0

250

AM980AXVGGH

223.0

250

AM980AXVAGH

225.0

250

English 37

Electrical wiring work

Essential Type (Heat Pump)

Model

MCA

MFA

AM100AXVDGH

23.0

AM120AXVDGH

25.0

AM140AXVDGH

29.0

AM160AXVDGH

32.0

AM180AXVDGH

39.2

AM200AXVDGH

46.0

AM220AXVDGH

48.0

AM240AXVDGH

52.0

AM260AXVDGH

55.0

AM280AXVDGH

57.0

AM300AXVDGH

64.2

AM320AXVDGH

64.0

AM340AXVDGH

71.2

AM360AXVDGH

78.4

AM380AXVDGH

80.0

AM400AXVDGH

87.2

100

Premium Energy Efficiency Type (Heat Recovery)

Model

MCA

MFA

AM080AXVGGR

18.0

AM100AXVGGR

21.2

AM120AXVGGR

25.0

AM140AXVGGR

27.0

AM160AXVGGR

32.0

AM180AXVGGR

39.2

AM200AXVGGR

43.0

AM220AXVGGR

46.0

AM240AXVGGR

55.0

AM260AXVGGR

60.0

AM280AXVGGR

60.4

AM300AXVGGR

64.2

AM320AXVGGR

73.0

AM340AXVGGR

76.2

AM360AXVGGR

81.2

AM380AXVGGR

85.0

100

AM400AXVGGR

86.0

100

AM420AXVGGR

94.2

125

AM440AXVGGR

98.0

125

AM460AXVGGR

103.0

125

AM480AXVGGR

110.0

125

AM500AXVGGR

115.0

150

AM520AXVGGR

120.0

150

AM540AXVGGR

119.2

150

AM560AXVGGR

124.2

150

AM580AXVGGR

131.2

150

AM600AXVGGR

136.2

150

AM620AXVGGR

141.2

175

AM640AXVGGR

145.0

175

AM660AXVGGR

149.2

175

AM680AXVGGR

153.0

175

AM700AXVGGR

158.0

175

AM720AXVGGR

165.0

200

AM740AXVGGR

170.0

200

AM760AXVGGR

175.0

200

AM780AXVGGR

180.0

200

AM800AXVGGR

179.2

200

AM820AXVGGR

186.2

225

AM840AXVGGR

191.2

225

AM860AXVGGR

196.2

225

AM880AXVGGR

201.2

225

AM900AXVGGR

205.0

225

AM920AXVGGR

208.0

250

AM940AXVGGR

213.0

250

AM960AXVGGR

220.0

250

AM980AXVGGR

225.0

250

Installation Procedure

38 English

· When installing outdoor units in module, select the power supply cable according to the sum of outdoor unit capacity. (Refer to the table for each model)
· Power Supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord. (Code designation IEC:60245 IEC 66 / CENELEC: H07RN-F)
Ex.) AM500*XV***

AM220*XV***

AM160*XV*** AM120*XV***

ELCB or
MCCB+ ELB

AM500*XV*** : 35 mm2
AM280*XV*** : 16 mm2
AM120*XV*** : 4 mm2
CAUTION
· Caution for electrical work You must install ELCB or MCCB + ELB ELCB: Earth leakage breaker MCCB: Molded case circuit breaker ELB: Earth leakage breaker Do not operate the outdoor unit before completing the refrigerant pipe work. Do not disconnect or change the cable inside the product. It may cause damage to the product. Specification of the power cable is selected based on following installation condition; culvert installation/ ambient temperature 30 °C/ single multi conductor cables. If the condition is different from the ones stated, please consult an electrical installation expert and re-select the power cable. If the length of power cable exceed 50m, re-select the power cable considering the voltage drop. Use a power cable made out of incombustible material for the insulator (inner cover) and the sheath (outer cover). Do not use the power cable with the core wire exposed due to insulator damage occurred during removal of the sheath. When the core wire is exposed, it may cause fire.

Exposed wire core

Insulator (inner cover) Sheath (outer cover)

NOTE
· This device is intended for the connection to a power supply system with a maximum permissible system impedance shown in the table (on the left page) at the interface point (power service box) of the user's supply.
· The user must ensure that this device is connected only to a power supply system which fulfills the requirement above. If necessary, the user can ask the public power supply company for the system impedance at the interface point.

· This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc(*2) at the interface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to Ssc(*2).
[Ssc (*2)]

Model AM080AXVGGH/EU AM100AXVGGH/EU AM120AXVGGH/EU AM140AXVGGH/EU AM160AXVGGH/EU AM180AXVGGH/EU AM200AXVGGH/EU AM220AXVGGH/EU AM240AXVGGH/EU AM260AXVGGH/EU AM080AXVGGR/EU AM100AXVGGR/EU AM120AXVGGR/EU AM140AXVGGR/EU AM160AXVGGR/EU AM180AXVGGR/EU AM200AXVGGR/EU AM220AXVGGR/EU AM240AXVGGR/EU AM260AXVGGR/EU AM080AXVAGH/EU AM100AXVAGH/EU AM120AXVAGH/EU AM140AXVAGH/EU AM160AXVAGH/EU AM180AXVAGH/EU AM200AXVAGH/EU AM220AXVAGH/EU AM240AXVAGH/EU AM260AXVAGH/EU AM100AXVDGH/EU AM120AXVDGH/EU AM140AXVDGH/EU AM160AXVDGH/EU AM180AXVDGH/EU

Ssc(MVA) 3.0 3.4 4.0 4.4 5.2 6.4 7.0 7.4 9.3 10.2 3.0 3.4 4.0 4.4 5.2 6.4 7.0 7.4 9.3 10.2 3.0 3.7 4.0 4.6 5.2 6.3 7.0 7.4 9.3 10.2 3.7 4.0 4.6 5.2 6.3

Power and communication cable
configuration
· Main power and the ground cable must be withdrawn through the knock-out hole on the bottom-right or right side of the cabinet.
· Withdraw the communication cable from the designated knock-out hole on the bottom-right side of the front part.
· Install the power and communication cable using separate cable protection tube.
· Fix a protection tube to the knock-out hole on the outdoor unit by using a CD connector or bushing. Make sure to use insulating bushing.

English 39

Installation Procedure

Electrical wiring work

Main unit

ELCB or
MCCB+ ELB

Sub unit

ELCB or
MCCB+ ELB

Sub unit

ELCB or
MCCB+ ELB

Protection tube

Communication cable Power · ground cable

Ground cable Power cable

Communication cable between outdoor units

Ground cable Power cable

Communication cable between outdoor units

Ground cable Power cable

Main unit

Sub unit

ELCB or
MCCB+ ELB

Protection tube

Communication cable Power · ground cable

Ground cable Power cable

Communication cable between outdoor units

Ground cable Power cable

Communication cable between outdoor units

Ground cable Power cable

Power Supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord. (Code designation IEC:60245 IEC 66 / CENELEC: H07RN-F)

Specification of the protection tube

Name
Flexible PVC conduit
Class 1 flexible conduit
Class 1 PVC coated flexible
conduit

Temper grade
PVC
Galvanized steel sheet
Galvanized steel sheet and Soft PVC compound

Applicable conditions
When the protection tube is installed indoor and not exposed to outside, because it is embedded in concrete structure
When the protection tube is installed indoor but exposed to outside so there are risk of damage to the protection tube
When the protection tube is installed outdoor and exposed to outside so there are risk of damage to the protection tube and extra waterproof is needed

· After perforating the knock-out hole, apply rust resisting paint around the hole.
· When you need to pass the cables through the knock-out hole, remove burrs on the hole and protection the cable with a protection tape or bushing etc.
· Caution for installing communication cable · When you connect the cable, it may sag and pressed by other
parts. Therefore cables should be fixed to a clamp highlighted with a box on the illustration.
Path for arranging external communication cable

CAUTION
· Caution for perforating the knock-out hole · Perforate a knock-out hole by punching it with a hammer.

Fixing location of the external communication cable

40 English

Power wiring diagram
Supplying 3 phase 4 wires (380-415 V~)

3 phase 4 wires Main unit (380-415 V~)

Sub unit 1

Sub unit 2

MCCB+ ELB or ELCB

Main unit

Sub unit

Installation Procedure

Single phase 2 wires (220-240 V~)

Communication
cable (Outdoor unit ~ Outdoor unit)

Main unit

MCCB+
ELB or
ELCB

Communication cable
(Outdoor unit ~ Indoor unit)

Grounding Grounding Grounding
Wired remote Wired remote Wired remote controller controller controller

Communication cable
(Outdoor unit ~ Indoor unit)

MCCB+ ELB or ELCB

3 phase 4wires 380 - 415 V~

Main unit

Sub unit 1

MCCB+ ELB or ELCB

Sub unit 2

Sub unit
Communication cable (Outdoor unit ~ Outdoor
unit)

Main unit

Sub unit

Single phase 2 wires (220-240 V~)

Communication
cable (Outdoor unit ~ Outdoor unit)

MCCB+ ELB or ELCB

Communication
cable (Outdoor unit ~ Indoor unit)

Communication cable
(Outdoor unit ~ Indoor unit)

Communication cable
(Outdoor unit ~ Outdoor unit)

Grounding Grounding Grounding Wired remote Wired remote Wired remote
controller controller controller

· Connect a power cable of the outdoor unit after checking that R-S-T-N (3 phase 4 wire) is properly connected. (If the 380-415 V power is supplied to the N phase, PCB and other electrical part will be damaged.)
· Communication cable between indoor and outdoor units and communication cable between outdoor units has no polarity.
· Arrange the cables with a cable tie.
ELCB and ELB must be installed since there is risk of electric shock or fire when they are not installed.

English 41

Electrical wiring work
Selecting solderless ring terminal
· Select a solderless ring terminal for a power cable according to the nominal dimensions for cable. · Apply insulation coating to the connection part of the solderless ring terminal and the power cable.
Silver solder

Installation Procedure

Nominal dimensions for cable (mm2)
Nominal dimensions for screw (mm)
Standard dimension (mm) B
Allowance (mm)
Standard dimension (mm) D
Allowance (mm)

Standard dimension (mm) d1
Allowance (mm)

Min. (mm)

Max. (mm)

Standard dimension (mm)
d2 Allowance (mm)

Min. (mm)

4/6

9.5

±0.2

±0.2 ±0.2

5.6

7.1

+0.3

+0.3 +0.3

-0.2

-0.2 -0.2

3.4

4.5

5.8

±0.2

±0.2 ±0.2

7.9

9.5

20 28.5 30

4.3

8.4

+ 0.2 + 0.4 + 0.4 + 0.4

0.9

1.15 1.45

16.5

±0.3

11.5 +0.5 -0.2 7.7

±0.2

8.4

+ 0.4 0

1.7

±0.3

13.3 +0.5 -0.2 9.4

±0.2

12.5

8.4

+ 0.4 0

1.8

±0.3 ±0.4

13.5 17.5 +0.5 +0.5 -0.2 -0.4 11.4 13.3

±0.3 ±0.4

17.5 18.5

8.4

+ 0.4 + 0.4

1.8

2.0

Connecting the power terminal
· Connect the cables to the terminal board with solderless ring terminals.
· Properly connect the cables by using certified and rated cables and make sure to fix them properly so that external force is not applied to the terminal.
· Use a driver and wrench that can apply the rated torque when tightening the screws on the terminal board.
· Tighten the terminal screws by complying rated torque value. If the terminal is loose, fire can occur due to arc heat generation and if the terminal is too tight, terminal board could get damaged.

1 Front connection

Solderless ring terminal

Cable tie
Thin cable Thick cable

When connecting two cables to one terminal, separate the solderless terminal up and down to prevent it from getting loose. Place the thin cable upward and the thick cable downward. Fix the power cable with a cable tie.

The place where the sheath of the power supply cable is removed.
Connector

Power cable protection tube

42 English

1 Closing the cover

3 Cut out the outer sheath of the power cable by revolving the tool in the direction of the arrow, two or three times.

Installation Procedure

4 At this situation, cut out the outer sheath of the power cable by moving the tool toward the direction of the arrow.

Screw M4 M8

Tightening torque for terminal (Nm)

1.2~1.8

Single phase (220-240 V) power cable

5.5~7.3

3 phase (380-415 V) power cable

CAUTION
· When removing the outer sheath of the power supply cable, be careful not to scratch the inner sheath of the cable.
· Make sure that more than 20mm of the outer sheath of the indoor unit power and communication cable are inside the electrical component box.
· Install the communication cable separately from power cable and other communication cables.
· There is a risk of electric shock when power is applied. Close the cover of the control box before proceeding to work.
· To inspect the compressor or PBA, first make sure to turn off the system. Electricity may flow even in a compressor that has not been used recently. Exercise caution to protect yourself from an electric shock.
Examples of how to use the cable striper

<Cable striper>
1 Adjust the blade position by coin. (Controller is at the bottom side of the tool.) Fix the blade position according to the outer sheath thickness of the power cable.

5 Slightly bend the wire and pull out the cut part of the outer sheath.

Fixing the power cable

3 phase 4 wires (380-415 V~)
ELCB or
MCCB+ ELB

Sub unit communication cable
Sub unit 3 phase 380415 V~

2 Fix the power cable and tool by using the hook at the top side of the tool.

CAUTION
· Do not let the power cable come into contact with the pipes inside the outdoor unit. If the power supply cable touches the pipes, the vibration of the compressor is transferred to the pipes and can damage the power supply cables or pipes, creating the danger of fire or explosion.
· Make sure that the place where the sheath of power supply cable is removed is inside the power supply box. If it is impossible, you should connect the protection tube for power cable to the power supply box.
· After arranging the power cable into the power supply box, tighten the cover.

English 43

Electrical wiring work

Connect the ring terminal of 3 phase cable
1 Cut the power cable to an appropriate length and connect it with the solderless terminal.
2 After connecting the power cable to the terminal as seen in the illustration, fix it with cable tie.
3 Fix the housing, which has an insulator, to the terminal board.

Installing the Solution device
· When the number of indoor units installed with the outdoor unit is 16 or less

F1 Terminal block with indoor

unit

OF1

Terminal block with

OF2 outdoor unit sub module

Terminal block with

solution device

F1 F2 OF1 OF2 R1 R2
Fixing the ground cable
· Connect the ground cable to the grounding hole inside the power supply box.

Where to install the interface module

(A)

Grounding

Withdrawing the power cable
· Withdrawing from the front side Connect the power cable protection tube into the power supply box as shown picture. Be sure that the power supply cable is not damaged by burr on the knock-out hole.

· Install the interface module in location (A), considering the installation conditions.
For details on how to install, refer to the interface module installation manual.

Installation Procedure

44 English

Connecting the MCU (MCU-S6NEK2N, MCU-S4NEK3N, MCU-S2NEK2N, MCU-S1NEK1N)

Example

(A) (B)

ELB MCCB

Indoor unit Indoor unit
ELB Outdoor MCCB unit 220-240 V~ · (A) Power must be supplied to the MCU separately from the outdoor unit. · (B) Connect the communication cable of the outdoor unit (F1, F2) to the communication cable of the MCU (F1, F2)

Grounding work
Grounding must be done by a qualified installer for your safety.

Grounding the power cable
· The standard of grounding may vary according to the rated voltage and installation place of the air conditioner. · Ground the power cable according to the following table.

Installation place

Power condition

Voltage to ground is lower than 150V

Voltage to ground is over 150V

High humidity

Must perform the grounding work 3. Note 1) (Including the case where earth leakage breaker is installed)

Average humidity Low humidity

Perform grounding work 3. Note 1)

Must perform the grounding work 3. Note 1)

Perform grounding work 3, if possible, for your safety. Note 2) (Including the case where earth leakage breaker is installed)

Note 1) About grounding work 3.
· Grounding work must be done by an expert (with qualification).
· Check if the grounding resistance is lower than 100. When installing an earth leakage breaker (that can cut the electric circuit within 0.5 second in case of a short circuit), allowable grounding resistance should be 30~500.
Note 2) Grounding at dry place
· The grounding resistance should be lower than 100. Even in worst case, grounding resistance should be lower than 250.

Performing the grounding work

· Use a rated grounding cable by referring to the specification of the electric cable for the outdoor unit.

When using the exclusive grounding terminal (When the grounding terminal is already built on the house)

When using grounding of the switch board

Exclusive grounding terminal

Distributing board

Installation Procedure

English 45

Nitrogen gas Nitrogen gas
Installation Procedure

Air tightness test and vacuum drying

Air tightness test

· Use tools for R-410A to prevent the inflow of foreign substances and resist against the internal pressure. · Do not remove the core of filling port. · Use dry nitrogen gas for air tightness test as shown in the illustration.

H/P

H/R

Manifold gage

Low pressure side

High pressure side

Manifold gage

Low pressure side

High pressure side

Filling port Gas pipe

Service valve Liquid pipe

Filling port
Gas pipe

Service valve
Liquid pipe High pressure gas pipe

Apply pressure to the liquid side pipe and gas side pipe (when installing outdoor units in module) with Nitrogen gas at 4.1MPa.

If you apply pressure at more than 4.1MPa, pipes may get damaged. Apply pressure with pressure regulator and pay attention to the pressure of the nitrogen.

Keep it for minimum 24 hours to check if pressure drops.

After applying Nitrogen gas, check there's any change of pressure, using a pressure regulator.

If the pressure drops, check for gas leakage.

If the pressure is changed, apply soap water to check for leakage and check the pressure of the nitrogen gas again.

Maintain 1.0MPa of the pressure before performing vacuum drying and check for further gas leakage.

After checking the first gas leakage, maintain 1.0MPa to check for further gas leakage.

CAUTION
· Perform a Nitrogen gas leak test with the service valve of the outdoor unit closed. · When charging the nitrogen gas, charge it from the both (high·low pressure) sides. · If the pipe is filled in a short time with a highly excessive pressure of Nitrogen gas, the pipes may get damaged. Make sure to use a
regulator to prevent the high pressure Nitrogen gas, over 4.1MPa, from entering into the pipe.

46 English

Vacuum drying pipes and indoor units
· Use tools for R-410A to prevent the inflow of foreign substances and resist against the internal pressure. · Use vacuum pump that allows vacuuming under -100.7kPa (5 Torr). · Use the vacuum pump with the check valve to prevent pump oil from flowing backward while the vacuum pump is stopped. · Completely close the liquid gas side service valve of the outdoor unit.

Connect the manifold gauge to the liquid side pipe and gas side pipe (when installing outdoor units in module).

When installing outdoor units in module, connect the manifold gauge to liquid side pipe and the gas side pipe.

Perform vacuum drying of the liquid side pipe and gas side pipe (when installing outdoor units in module) using a vacuum pump.

Make sure that check valve is installed to prevent pump oil from flowing into the pipe.

While the vacuum gauge pressure is less than -100.7 kPa (5 Torr), perform the vacuum drying for more than 1 hour and close the valve.

Vacuum pressure must be checked with the vacuum gauge.

After vacuum pump stops, check whether the pressure is maintained within -100.7 kPa (5 Torr) for an hour.

Check for gas leakage

Yes Over -100.7 kPa (5 Torr)
No
Charge additional refrigerant to the pipe

Vacuum destruction · Apply dry nitrogen gas to the pipe at pressure of
0.05 Mpa.
Perform vacuum drying again

Yes

Pressure increase

If the pressure rises in an hour, either water is remaining inside the pipe or there is a leakage.
When the ambient temperature of vacuuming pipe is low (less than 0 °C), moisture might remain within the pipe. Therefore, pay special attention to the pipe sealing in the winter.

Installation Procedure

English 47

Pipe insulation

Installation Procedure

Insulating the refrigerant pipes and branch joints
· Check for gas leakage before completing (the hose and pipe insulation) and if there is no sign of leakage, make sure to insulate the pipes and hoses.
· Use EPDM material insulator that meets the following conditions.

Test item Density Dimensional change rate by heat Absorption rate Thermal conduction rate Moisture transpiration factor Moisture transpiration grade
Formaldehyde dispersion
Oxygen rate

Unit g/cm3
% g/cm3 W/m·K ng/(m2·s·Pa)
g/(m2·24h)
mg/L %

Standard 0.048~0.096
Below -5 Below 0.005 Below 0.037
Below 15
Below 15 There should be
none Over 25

Selecting the refrigerant pipe insulator
· Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
· The standard condition is; temperature at 30°C, humidity less than 85%. If case if the humidity is higher, you must increase the size by one grade as stated in below table.

Insulator (Cooling·Heating)

Diameter of General1)

High humidity2)

Pipe

refrigerant pipe

[30 °C, 85 %]

[30 °C, over 85 %]

Remarks

Liquid Gas

Ø 6.35 ~ Ø 9.52
Ø 12.7 ~ Ø 50.80
Ø 6.35
Ø 9.52 ~ Ø 25.40
Ø 28.58 ~ Ø 44.45
Ø 50.80

EPDM, NBR

9 mm

13 mm 13 mm 19 mm 25 mm

19 mm 25 mm

Heat resisting temperature over 120°C

32 mm 38 mm

1) To install in any of the following places or environments, use the same insulating material used in general conditions.
An air-conditioned place where humidity is high inside the ceiling tiles
A space where temperature/humidity difference is large between the upper and lower air due to a high ceiling (e.g., a large chapel/church, cinema, split-level open lobby, lecture hall with theatre seating)
A corridor or passageway with no air conditioning system
An old building with poor insulation

48 English

[Under the following conditions, a gas pipe of Ø9.52 to Ø25.40 mm and plumbing of 13 t can be used]
A general town centre building (e.g., an apartment building, dwelling house, lecture hall, educational institute building, office, shopping complex)
A structure with an exposed ceiling A structure with ceiling tiles and a ventilation system A structure where there is no inflow of air from the outside
due to plumbing laid inside a wall Even in the above conditions, if humidity is very high or
condensation is expected to occur, change the installation thickness for high humidity.
2) To install in any of the following places or environments, use the same insulating material used in a place with high humidity.
<Geographical conditions>
A location with high humidity, such as a seaside area, a hot spring area, an area near a pond/river or a ridge (a building that is partially covered in earth and sand)
A location where morning dew occurs frequently (e.g., once every three days)
<Purpose of the building>
Sauna, swimming pool or restaurant <Structural conditions of the building>
Installation inside a ceiling that is not air-conditioned where there is inflow of a large amount of moisture (plumbing installed along a corridor or near the entrance of a hall of residence or studio flat)
A place where humidity is high due to an insufficient ventilation system in the space where plumbing is installed
A room on a semi-basement floor · If you are not sure which insulating material to use, choose
material used in a place with high humidity. · If the purpose of the room is subject to change, reconsider the
thickness of insulating material. · Use the specified insulating material only.
Insulate the refrigerant pipe
· Make sure to insulate the refrigerant pipe, branch joint, distribution header, and the connection part of the pipes.
· If you insulate the pipes, condensed water will not fall from the pipes. · Check if there are any cracks on the insulation at the bent part
of the pipe.

Insulator

Clamp Insulator

Gas side pipe
Liquid side pipe

Indoor unit

Insulator

Install the insulation to be overlapped Fix securely without any gap.

Insulating pipes
· The insulation of the gas and liquid pipes can be in contact with each other but they should not press excessively against each other.
· When the gas side and liquid side pipes are contacting each other, increase the thickness of the insulation by one grade.

Insulator

Insulation Adhesive insulation tape

Gas pipe

Liquid pipe

Insulating pipes connected behind the EEV kit
· When installing the gas side and liquid side pipes, leave at least 10mm of space.
· When the gas side and liquid side pipes are contacting each other, increase the thickness of the insulation by one grade.

10 mm

Insulate the distribution header

Insulate the refrigerant pipe
Insulate after welding a stopper

Adhesive insulation tape · Fix the distribution header with a hanger after insulating it.

Installation Procedure

Gas pipe

Liquid pipe

CAUTION
· Install the insulation without any gaps or cracks and use adhesive on the connection part of it to prevent moisture from entering.
· Bind the refrigerant pipe with insulation tape if it is exposed to outside sunlight. (When binding the pipe with finishing tape, be careful not to reduce the thickness of the insulation.)
· Install the refrigerant pipe respecting that the insulation does not get thinner on the bent part or hanger of pipe.
· When the thickness of insulation is reduced, reinforce the reduced thickness with additional insulation.

Additional Insulator

Hanger

Insulating the branch joint
· Tightly attach the insulator, provided with the branch joint, to the separately purchased insulator. Wrap the connected part with an insulator (separately purchased item) that has thickness of at least 10mm.
· Use an insulator that resist heat up to 120°C. Wrap the branch joint with an insulation that has thickness of at least 10mm.

Pipe insulator (Separately purchased item)

Provided Insulator

Fix securely without any gap.

Insulator for

a x 3

refrigerant pipe

150mm

Branch joint

Pipe insulator (Separately purchased item)

Thickness of the insulator (Separately purchased item) should be

thicker than 10mm.

Insulate the distribution header
· Fix the distribution header with a cable tie and cover the connected part.
· Insulate the distribution header and the welded part and wrap the connected part with an adhesive insulation tape to prevent dew formation.

Insulation tape (Separately purchased item) Pipe
Pipe insulator (Separately purchased item) Attach the adhesive insulation tape to the pipe, as shown in
the picture, after insulating the pipe.

English 49

Refrigerant charging

Insulating the pipe located inside of the
outdoor unit
· With a pipe insulator, insulate the pipe up to whole service valve located inside of the outdoor unit.
· Seal the gap between the outdoor unit pipe and the insulator. Rainwater and dewdrops may soak through the gap between the pipe and the insulation of the outdoor unit installed on the outside.
· Separate the cover of the pipe and close it after insulation work. Only remove a knock-out hole cover where the pipe will be installed. If the knock-out hole is open unnecessarily, it must be closed. If not, small animals such as squirrels and rats may get into the unit through the hole and the unit may be damaged.

H/P H/R

Installation Procedure

Refrigerant charging

· The R-410A refrigerant is blended refrigerant. Add only liquid refrigerant.
· Measure the quantity of the refrigerant according to the length of the liquid side pipe. Add quantity of the refrigerant using a scale.

Indoor unit

Important information: regulation regarding the refrigerant used
This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere.
WARNING
· Inform user if the system contains 5 tCOe or more of fluorinated greenhouse gases. In this case, it must be checked for leakage at least once every 12 months, according to regulation No. 517/2014. This activity must be covered by qualified personnel only. In the case of the situation above, the installer (or authorized person with responsibility for final check) must provide a maintenance book, with all the information recorded, according to REGULATION (EU) No. 517/2014 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16 April 2014 on fluorinated greenhouse gases.
Please fill in the following with indelible ink on the refrigerant charge label supplied with this product and on this manual. · : The factory refrigerant charge of the product. · : The additional refrigerant amount charged in the field. · + : The total refrigerant charge.

Outdoor

unit

Unit

, a

, b

+ ,c

tCOe

Refrigerant type R-410A

GWP value 2088

· GWP=Global Warming Potential · Calculating tCO2e : kg x GWP / 1000
NOTE a Factory refrigerant charge of the product: see unit name plate. b Additional refrigerant amount charged in the field. (Refer
to the above information for the quantity of refrigerant replenishment.) c Total refrigerant charge. d Refrigerant cylinder and manifold for charging.

50 English

Installation Procedure

CAUTION
· The filled-out label must be adhered in the proximity of the product charging port. (ex. onto the inside of the stop valve cover.)

Single installation
· Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
· If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB.
Outdoor unit

R-410A (Inject liquid refrigerant)

Gas side Liquid side

Scale

Manifold gage Service valve

Vacuum port

Module installation

· Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
· If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB.
· If you use the refrigerant charging function from the PCB, outdoor unit will operate and charge the refrigerant. At this time, you must use gas side manifold gauge for cooling operation and use charging port for heating at the manifold gauge for heating operation.

R-410A (Inject liquid refrigerant)

Manifold gage

Outdoor unit
Gas Liquid side side

Outdoor unit

CAUTION
· Open the gas side and liquid side service valve completely after charging the refrigerant. (If you operate the air conditioner with the service valve closed, the important parts may be damaged.)
· Put on safety equipment when charging refrigerant. · Do not charge the refrigerant when you adjust or control other
product such as indoor units or EEV kits. · If you charge the refrigerant with the front cabinet open, be
very careful with the fan on the top of the product to prevent personal injury. · When the ambient temperature is low in winter time, do not heat the refrigerant container to speed up the charging process. There is risk of explosion. · Beware for possibility of refrigerant leakage when you connect the manifold gauge to the charging port for heating. · Close the valve of the refrigerant container immediately after charging the refrigerant. If not, there might be a change in entire amount of refrigerant.
Using service valve for gas
· After charging the refrigerant, close all caps as shown in the illustration.
· Tightening torque for the cap of refrigerant charging port 10~12 Nm
· Tightening torque for the cap of control part 20~25 Nm · Opening/closing torque for the valve
Over Ø 19.05 : 10.0 N·m
Cap for the control part
Cap for the refrigerant charging port

Scale

Liquid side pipe

Service valve

Vacuum port

English 51

Basic segment display

Installation Procedure

Step At initial power input

Display content Checking segment display

While setting communication between indoor and outdoor unit (Addressing)

Number of connected indoor units

After communication setting (usual occasion)
I/U : Indoor unit

MCU, Indoor unit address

SEG 1 "8"
SEG 1
"A"
SEG 1 I/U: "A" MCU: "C"

Display

SEG 2

SEG 3

"8"

SEG 2

SEG 3

SEG 4 "8"
SEG 4

Number of communicated

"d"

units Refer to "View Mode" for

communication address

SEG 2
I/U: "0" MCU: "1"

SEG 3

SEG 4

Reception address (in decimal number)

Setting outdoor unit option switch and key function

Setting outdoor unit option switches
· Setting outdoor install option

Step Step1 Step2
Step3

Button

Display

Description

Note

Outdoor unit address

Outdoor unit display

Setting required

Press (K1+K2) for 2 seconds

00: Main unit

K4 x 1 time K4 x 2 times

Unit address for module combination

01: Sub1 unit 02: Sub2 unit

K4 x 3 times

03: Sub3 unit

If it is main unit, go to step4.
Otherwise, press K2 button for 2 seconds to save & exit (system will be reset)

Quantity of indoor units

Step4

Press K1

Ready to set

Step5 Step6 Step7

K2 x n times K4 x n times

Tens digit (0 ~ 6)

Ex) 03: 3 units

Ones digit (0 ~ 9)

64: 64 units

* K4: Press for 2 seconds - automatic detection of indoor units' quantity

If it is heat recovery model, go to step 7.
Otherwise, press K2 button for 2 seconds to save & exit (system will be reset)

Quantity of MCUs * Heat recovery model only

Press K1

Ready to set

Step8

K2 x n times K4 x n times

Tens digit (0 ~ 1)

Ex) 03: 3 units

Ones digit (0 ~ 9)

16: 16 units

* K4: Press for 2 seconds - automatic detection of MCUs' quantity

Step9

K2: long

Save

Restart

* Press K1 for 2 seconds to exit without save regardless of setting step.

52 English

Start

Outdoor unit address

Main unit?

Yes Quantity of indoor units

Heat recovery?

Yes Quantity of MCUs

Save

Installation Procedure

Installing and setting the option with tact switch and explanation of the functions
Setting the option 1 Press and hold K2 to enter the option setting. (Only available when the operation is stopped)
If you enter the option setting, display will show the following. (If you have set the `Emergency operation for compressor malfunction', 1 or 2 will be displayed on Seg 4.)
Seg 1 and Seg 2 will display the number for selected option. Seg 3 and Seg 4 will display the number for set value of the selected option. 2 If you have entered option setting, you can shortly press the K1 switch to adjust the value of the Seg 1, Seg 2 and select the desired option. (Refer to pages 54~56 for the Seg number of the function for each option) Example)

3 If you have selected desired option, you can shortly press the K2 switch to adjust the value of the Seg 3, Seg 4 and change the function for the selected option. (Refer to pages 54~56 for the Seg number of the function for each option) Example)

4 After selecting the function for options, press and hold the K2 switch for 2 seconds. Edited value of the option will be saved when entire segments blinks and tracking mode begins.
CAUTION
· Edited option will not be saved if you do not end the option setting as explained in above instruction. While you are setting the option, you may press and hold the K1 button to reset the value to previous setting. If you want to restore the setting to factory default, press and hold the K4 button while you are in the option setting mode.
If you press and hold the K4 button, setting will be restored to factory default but it doesn't mean that restored setting is saved. Press and hold the K2 button. When the segments shows that tracking mode is in progress, setting will be saved.
English 53

Installation Procedure

Setting outdoorunit option switch and keyfunction

Optional item

Input unit

Emergency operation for compressor malfunction

Individual

Capacity correcton for cooling

Main

Capacity correction for heating

Main

Current restriction rate

Individual

Oil collection interval

Main

Temperature to

trigger defrost

Main

operation

Fan speed correction for outdoor unit

Individual

SEG1 0 0
0
0
0 0 0

SEG2 0 1
2
3
4 5 6

SEG3 0
0
0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0
0
0
0

SEG4 0
1
2
0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 9 0 1 0 1 0
1
0
1

Function of the option Disabled (Factory default) Set compressor 1 as malfunction
state Set compressor 2 as malfunction
state 7-9 5-7 (Factory default) 9-11 10-12 11-13 12-14 13-15 3.0 (Factory default) 2.5 2.6 2.7 2.8 2.9 3.1 3.2 3.3 100% (Factory default) 95 % 90 % 85 % 80 % 75 % 70 % 65 % 60 % 55 % 50 % No restriction Factory default Shorten the interval by 1/2 Factory default Apply setting when the product is being installed in humid area such as near river or lake Factory default
Increase fan speed

Remarks E560 will occur when all the compressors are set as malfunction
state.
Targeted evaporation temperature [°C].
(When low temperature value is set, discharged air temperature of the
indoor unit will decrease)
Targeted high pressure [MPa]. (When low pressure value is set, discharged air temperature of the
indoor unit will decrease)
When restriction option is set, cooling and heating performance
may decrease.
Increase the outdoor unit's fan speed to maximum value

54 English

Installation Procedure

Optional item
Silent mode
High-head condition setting
Long-piping condition setting
Energy control operation
Rotation defrost (HR only)
Expand operational temperature range for cooling operation
(HR only) Channel address Snow accumulation prevention control Unused option Unused option

Input unit
Main
Main
Main Main Main Main Main Main Main Main

SEG1 SEG2 SEG3 SEG4

Function of the option Disabled (Factory default)
LEVEL 1 / Auto LEVEL 2 / Auto LEVEL 3 / Auto LEVEL 1 / External contact LEVEL 2 / External contact LEVEL 3 / External contact
LEVEL 1 LEVEL 2 LEVEL 3 Disabled (Factory default) Level 1 of height difference type 1 (Indoor unit is lower than outdoor
unit) Level 2 of height difference type 1 (Indoor unit is lower than outdoor
unit) Height difference type 2 (Outdoor
unit is lower than indoor unit) Disabled (Factory default)
LEVEL 1
LEVEL 2
Basic (Factory default) Energy saving
Power

Remarks
Enables the silent mode for nighttime in cooling mode (It operates automatically depending on the
temperature.) However, if the external contact interface module (MIM-B14) is used, entering the silent mode is available with contact signal in cooling and
heating mode.
When outdoor unit is located 40~80m above the indoor unit
When outdoor unit is located over 80m above the indoor unit
When indoor unit is over 30 m above the outdoor unit
When equivalent length of farthest indoor unit from the outdoor unit is
between 100~170m When equivalent length of farthest indoor unit from the outdoor unit is
over 170m
Energy control option of designated operation sequence
Operating in energy saving mode, capacity might decrease compared to
normal operation mode

Disabled (Factory default)

Enabled

When enabled, continuous heating operation is possible but heating performance will decrease during
rotation defrost operation

Disabled (Factory default)

Enabled

When enabled, continuous cooling operation is possible even in low temperature condition up to -15°C, but noise of the MCU will increase

U Automatic setting (Factory default) Address for classifying the product

0 ~ 15

Manual setting for channel 0~15

from upper level controller (DMS, S-NET 3, etc.)

Enabled (Factory default) Disabled

During snow accumulation, the fan may spin even when the unit is not
in operation

Unused option

Unused option by this model

Unused option

Unused option by this model

English 55

Setting outdoorunit option switch and keyfunction

Optional item

Input unit SEG1 SEG2 SEG3 SEG4

Function of the option

Remarks

Speed operation

Main

Disabled (Factory default) Enabled

Enabling this setting will command the air conditioner to cool/heat faster
at initial start-up.
However, this function will not work when High-head condition setting or Long-piping condition setting is
enabled.

Max. capacity restriction
Gas leak pump down Unused option
LA KIT option

Main

Enabled (Factory default) Disabled
Disabled (Factory default) Enabled
Unused option Disabled (Factory default)
Enabled

Restrict excessive capacity increase when operating indoor units with
small capacity
If the gas leak occurred it should be entered in the pump down operation.
Unused option by this model
Set when LA KIT is installed.

Emergency operation

for indoor unit

Main

communication error

Base Heater

Main

Inverter Carrier Frequency

Main

Aux Heater's

interworking control

for cycle heating

Main

(cooling priority

control)

Auto Change Over

Main

Emergency defrost operation

Main

Reduction of the

diameter of liquid

Main

pipe

Disabled (Factory default)

Indoor high humidity condition (operating for up to 12hours)
Indoor low humidity condition (operating for up to 24hours)

When set, emergency operation is possible even if an indoor communication error occurs.

Disabled (Factory default) Enabled

Set when Base Heater is installed.

Disabled (default) 8kHz

Set inverter carrier frequency

Not applied

1 Switching delay to heating (30 mins.)

When using the Aux Heating, set the

0 0

2 Switching delay to heating (15 mins.) delay time for Switching from cooling

3 Switching delay to heating (10 mins.)

to heating.

Unused by the cooling only models

4 Switching delay to heating (5 mins.)

Not switching delay

Not applied Applied

When Thermo off for all running indoor units, change the operation mode.
Unused by the cooling only models

Disable (default) Enable

You can enable this fuction, if the ice on the outdoor Heat exchanger is not removed even after continuous defrost
operation, emergency defrosting operation is performed, but defrost
operation can take a long time.

Disable (default) Enable

Set when piping is installed with Reduction of the diameter of liquid
pipe.

There is a risk of water leakage during emergency operation for indoor unit communication error. Please be careful when using it.

Installation Procedure

56 English

Setting key operation and checking the view mode with tact switch

Installation Procedure

K1 control Press and hold 1 time

KEY operation Auto trial operation

Display on segment "K" "K" "BLANK" "BLANK"

K1 (Number of press) 1 time 2 times 3 times 4 times 5 times 6 times 7 times 8 times 9 times 10 times 11 times 12 times 13 times 14 times 15 times 16 times

KEY operation Refrigerant charging in Heating mode
Trial operation in Heating mode Pump out in Heating mode (Outdoor unit address 1) Pump out in Heating mode (Outdoor unit address 2) Pump out in Heating mode (Outdoor unit address 3) Pump out in Heating mode (Outdoor unit address 4)
Vacuuming (Outdoor unit address 1) Vacuuming (Outdoor unit address 2) Vacuuming (Outdoor unit address 3) Vacuuming (Outdoor unit address 4)
Vacuuming (All outdoor units) Inverter Fault Detection (Comp#1) Inverter Fault Detection (Comp#2) Inverter Fault Detection (Fan#1) Inverter Fault Detection (Fan#2)
End Key operation

Display on segment "K" "1" "BLANK" "BLANK" "K" "2" "BLANK" "BLANK"
"K" "3" "BLANK" "1" "K" "3" "BLANK" "2" "K" "3" "BLANK" "3" "K" "3" "BLANK" "4" "K" "4" "BLANK" "1" "K" "4" "BLANK" "2" "K" "4" "BLANK " "3" "K" "4" "BLANK" "4" "K" "4" "BLANK" "A"
"K" "5" "I" "1" "K" "5" "I" "2" "K" "5" "F" "1" "K" "5" "F" "2"
-

WARNING
· After installing the product, be sure to perform leak tests on the piping connections. After pumping down refrigerant to inspect or relocate the outdoor unit, be sure to stop the compressor and then remove the connected pipes.
Do not operate the compressor while a valve is open due to refrigerant leakage from a pipe or an unconnected or incorrectly connected pipe. Failure to do so may cause air to flow into the compressor and too a high pressure to develop inside the refrigerant circuit, leading to an explosion or product malfunction.

English 57

Setting outdoorunit option switch and keyfunction

Installation Procedure

K2 (Number of press) 1 time 2 times 3 times
4 times
5 times 6 times 7 times 8 times 9 times 10 times 11 times 12 times 13 times 14 times 15 times

KEY operation Refrigerant charging in Cooling mode
Trial operation in Cooling mode Pump down all units in Cooling mode
H/R: Checking the pipe connection H/P: Automatic setting of operation mode (Cooling/Heating)
for trial operation
Checking the amount of refrigerant
Discharge mode of DC link voltage Forced defrost operation Forced oil collection
Inverter compressor 1 check Inverter compressor 2 check
Fan 1 check Fan 2 check H/R : Auto pipe pairing H/P : Unused Baseheater testing mode
Unused

Display on segment "K" "5" "BLANK" "BLANK" "K" "6" "BLANK" "BLANK" "K" "7" "BLANK" "BLANK"
"K" "8" "BLANK" "BLANK"
"K" "9" X X (Display of last two digits may differ depending on the progress)
"K" "A" "BLANK" "BLANK" "K" "B" "BLANK" "BLANK" "K" "C" "BLANK" "BLANK" "K" "D" "BLANK" "BLANK" "K" "E" "BLANK" "BLANK" "K" "F" "BLANK" "BLANK" "K" "G" "BLANK" "BLANK" "K" "H" X X (Display of last two digits may differ depending on
the progress) "K" "I" "BLANK" "BLANK" "K" "J" "BLANK" "BLANK"

16 times

End Key operation

Even when the outdoor unit power is off, it is dangerous when you come in contact with inverter PCB and fan PCB since they are charged with high DC voltage.
When replacing/repairing the PCB, cut-off the power and wait until the DC voltage is discharged before replacing/repairing them. (Wait for more than 15 minutes to allow it to discharge naturally.)
When there were error, `Discharge mode of DC link voltage' may not have been effective. Especially if error E464 and E364 have been occurred, power element might be damaged by fire and therefore, do not use the `Discharge mode of DC link voltage'.
During "Discharge mode of DC link voltage", voltage of INV1 and INV2 will be displayed alternately. If the voltage does not drop during `Discharge mode of DC link voltage', please cut-off the power and wait for 15 minutes until voltage
discharges naturally. Due to the characteristics of the inverter PCB, `Discharge mode of DC link voltage' may not be supported.
When pressing K2 key 9 to 12 times without inverter checker, error code can be displayed on segment even though the outdoor unit is normal. If error have been occurred, do not use the key operation. If the 1st-generation MCU is installed, the Auto pipe pairing operation can not be used.
If the 2nd-generation MCU is installed, the Checking the pipe connection can not be used.
1st-generation MCU : MCU-S*NEE*N, MCU-S2NEK1N
2nd-generation MCU : MCU-S*NEK2N,MCU-S4NEK3N,MCU-S1NEK1N
KEY operation of K2 15 times(Automatic refrigerant charging fuction) is an unused function.
It can be available with Automatic refrigerant charging option KIT.

K3 (Number of press)

KEY operation

Display on segment

1 time

Initialize (Reset) setting

Same as initial state

K4 (Number of press)
1 time 2 times 3 times 4 times 5 times 6 times 7 times 8 times 9 times
58 English

KEY operation
Capacity of Outdoor unit Model Order frequency of the compressor 1 Order frequency of the compressor 2
High pressure (MPa) Low pressure (MPa) Discharge temperature (Compressor 1) Discharge temperature (Compressor 2) IPM temperature (Compressor 1) IPM temperature (Compressor 2)

SEG 1 1 2 3 4 5 6 7 8 9

Display on segment SEG2, 3, 4
AM160AXV*** Off, 1, 6 120 Hz 1, 2, 0 120 Hz 1, 2, 0 1.52 MPa 1, 5, 2
0.43 MPa 0, 4, 3 87 °C 0, 8, 7 87 °C 0, 8, 7 87 °C 0, 8, 7 87 °C 0, 8, 7

Installation Procedure

K4 (Number of press)
10 times 11 times 12 times 13 times 14 times 15 times 16 times 17 times 18 times 19 times 20 times 21 times 22 times 23 times 24 times 25 times 26 times 27 times
28 times
K4 (Number of press) Press and hold the K4 to enter the setting
1 time 2 times 3 times 4 times 5 times 6 times 7 times
8 times
9 times
I/U : Indoor unit

KEY operation
CT sensor value (Compressor 1) CT sensor value (Compressor 2)
Suction temperature COND OUT temperature Temperature of liquid pipe TOP temperature (Compressor 1) TOP temperature (Compressor 2)
Outdoor temperature EVI inlet temperature EVI outlet temperature
Main EEV1 step Main EEV2 step
EVI EEV step HR EEV step Fan step (SSR or BLDC) Current frequency (Compressor 1) Current frequency (Compressor 2) Suction 2 temperature (HR Only) Main indoor unit address
Displayed content
Main version Hub version Inverter 1 version Inverter 2 version Fan 1 version Fan 2 version EEP version
Automatically assigned address of the units
Manually assigned address of the units

Display on segment

SEG 1

SEG2, 3, 4

2 A 0, 2, 0

-42 °C -, 4, 2

2000 steps 2, 0, 0

300 steps 3, 0, 0

13 steps 0, 1, 3

120 Hz 1,2,0

-42 °C -, 4, 2

Main indoor unit not selected BLANK, N, D

If indoor unit No.1 is selected as the main unit 0, 0, 1

Display on segment

page1

page2

MAIN HUB INV1 INV2 FAN1 FAN2 EEP
AUTO
MANU

Version (ex. 1412)

SEG1

SEG2

Indoor unit: "A" Indoor unit: "0"

MCU: "C"

MCU: "1"

SEG1

SEG2

Indoor unit: "A" Indoor unit: "0"

SEG3, 4 Address (ex: 07) SEG3, 4 Address (ex: 15)

English 59

Optional: Setting the MCU and Pipe Addresses (for HR Only)

Installation Procedure

You can set the MCU address, the MCU ports to use, and the address for each MCU port connected to each indoor unit.
It is for 2nd-generation MCU only. (MCU-S*NEK2N,MCUS4NEK3N,MCU-S1NEK1N)

Setting the MCU address and the MCU ports to use
You can set the MCU address and the MCU ports on the MCU PBA.

MCU address switch DIP switch

9 01

S/W option DIP switch
ON

9 01

1234 12 ABCD E F

1 234

ABCDE F

456 456

1 Set the MCU address switch to a value. If two or more MCUs are installed, be sure to set a unique value for each MCU. For the MCU address, you can set a value from 0 to 15.
2 For each MCU ports that are connected to an indoor unit through piping, set their DIP switch to ON. For other MCU ports, set their DIP switches to OFF. You can find the address (A to F) of an MCU port on the indoor unit piping connection.
3 If two MCU ports are connected to an indoor unit through a Y-joint, set the relevant S/W option DIP switch to the settings given in the following table:

S/W option

DIP switch No. (Individual connection)

OFF (Shared connection)

Each of ports A and B

Both ports A and B

Each of ports C and D

Both ports C and D

Each of ports E and F

Both ports E and F

· You cannot make a shared connection for the two ports B and C, and D and E at the same time.

ABCDE F

4 Set the address of each MCU port that is connected to an indoor unit by taking the procedures in Setting the Pipe Addresses Manually or Setting the Pipe Addresses Automatically. (Auto pipe pairing operation)
CAUTION
· If the following models are connected, set the pipe addresses manually by referring to Setting the Pipe Addresses Manually. ERV plus (AM****NKDE*), OAP duct (AM****NEPE*), Hydro Unit (AM****NBDE*, AM****NBF**), AHU kit (MXD-K***AN, MCM-D***N)
· If 1st-generation MCU (MCU-S*NEE*N, MCU-S2NEK1N) is installed, refer to the corresponding install manual.
60 English

Setting the Pipe Addresses Manually

You can use the wired or wireless remote control or the S-NET Pro 2 to set the pipe addresses for each indoor unit.

Setting by using the wired or wireless remote control (For how to operate the remote control buttons, see the remote control user manual.)

1 Turn on both the indoor unit and the remote control.
2 Enter the "Option setting mode" on the remote control.
3 Set the address of each MCU port that is connected to an indoor unit by referring to the following table. (You can also set the address of each indoor unit.)

Option SEG1 SEG2

SEG3

SEG4

SEG5

SEG6

0: The

address of

the indoor

Value

A: Address setting mode

unit will not be set.
1: The address of the indoor

0 to 9: Hundreds digit of the indoor unit address

0 to 9: Tens 0 to 9: Units digit of the digit of the indoor unit indoor unit
address address

unit will be

set.

Option SEG7 SEG8

SEG9

SEG10

SEG11

SEG12

Value 1

0: The RMC

address will not be set.

0 to F:

RMC group RMC group

1: The RMC address will

channel address

be set.

Option SEG13 SEG14

SEG15

SEG16

SEG17

SEG18

Value 2

0: The MCU

address will not be set.
1: The MCU address will

0 to 1: Tens 0 to 9: Units digit of the digit of the
MCU address MCU address

A to F: MCU port address

be set.

Option SEG19 SEG20

SEG21

SEG22

SEG23

SEG24

Value 3

Examples> If the indoor unit whose address is not yet set is connected to port A on the MCU 1, set 0A0000-10000020101A-300000.

If the indoor unit whose address is set to 9 is connected to port B on the MCU 2, set 0A1009-100000-20102B-300000.

Setting by using S-NET Pro 2

· Set the pipe addresses by using Add-on > Change address on S-NET Pro 2. (For more information, see the S-NET Pro 2 Help.)

Installation Procedure

Optional: Setting the MCU and Pipe Addresses (for HR Only)

Setting the Pipe Addresses Automatically (Auto pipe pairing operation)
You can use the Automatic pipe-address setting operation to automatically set the address of each MCU port that is connected to an indoor unit. If an MCU port is set incorrectly or a pipe between an MCU and an indoor unit is connected incorrectly, that indoor unit is indicated.
Check items before running the Auto pipe pairing operation
1 Ensure that the service valve of the outdoor unit is open. 2 Ensure that the power cables and communication cables of the
indoor and outdoor units are correctly connected. 3 Turn on the indoor and outdoor units 6 hours before running
the Automatic pipe-address setting operation to warm up both units sufficiently. 4 Before turning on the power, check whether the voltages and phases are correct by using a voltmeter and a phase tester. Check for the R, S, T, and N terminals: ensure that 380-415V
is read between lines (R-S, S-T, T-R) and 200-240V (R-N, S-N, T-N) between phases. 5 After the power is turn on, set the devices (indoor unit, MCU, and others) that are connected to the outdoor unit, and set the options. Note that, before the MCU port addresses are set, MCU port setting errors (E216, 217, 218) may occur. You can run the Automatic pipe-address setting operation regardless of MCU port setting errors. 6 If the OAP(Outdoor Air Processing) Duct or Hydro unit is connected, set the pipe addresses manually referring to [Setting the Pipe Addresses Manually]. 7 Check the operating temperature for the Automatic pipeaddress setting operation: If this operation is run at a temperature out of the operating temperature range, the addresses set automatically may be incorrect. Set the pipe addresses manually by referring to Setting the Pipe Addresses Manually. 8 Auto pipe-pairing operation does not work within 3 minutes after power on and reset due to communication check.
45

Outdoor Temperature ()

30
Main cooling operation

Main heating operation

-10

Indoor Temperature ()

[Operating temperature for the Auto pipe pairing operation]

· Before running the Auto pipe pairing operation, be sure to close the front cabinet. If this operation is run with the front cabinet open, the product may be damaged and the pipe addresses cannot be correctly recognized.

To run the Auto pipe pairing operation, take the following steps:

1 Press the K2 button 13 times on the main PBA of the outdoor

unit to start the Auto pipe pairing operation. (Display :

Outdoor temperature <
24

24 Outdoor temperature <
30

30 Outdoor temperature

Indoor temperature <
24

Main heating operation

Main cooling operation

Indoor temperature
24

Main heating operation

Main cooling operation

Each step is indicated on the outdoor unit display. (The whole operation takes about 25 to 55minutes normally, depending on the number of indoor units connected. However, it can be operated for up to 2 hours to protect the compressor.)

Step 1 (Start

) Steps 2 to 8 (Setup

)

Step 9 (Check

) Step 10 (Confirmation

)

2 When the Auto pipe pairing operation finishes, the following data is shown on the outdoor unit display.

Result

Outdoor unit
display

Description

Setting completed

End

Setting error

Indoor unit data

· SEG 1,2 = indoor unit address / SEG 3,4 = error status 00: An MCU port is not disabled, or a pipe is not connected.

E191 Indoor unit data (displayed alternately)

01: Cooling only indoor unit is connected to MCU.
02: The shared setting for two ports is incorrect.

Example) When the MCU port connected to the
indoor unit 12 is disabled, E191 and 1200 are displayed alternately

· If two or more indoor units have setting errors, the data about the next indoor unit is displayed each time you press the K2 switch.

CAUTION
· If the MCU ports to use are set incorrectly, the Auto pipe pairing operation may stop due to high-pressure or lowpressure protection control or the data about the indoor unit that has a MCU port setting error may be incorrect. Ensure that the MCU ports to use are set correctly.
· Depending on the indoor and outdoor temperatures, the Auto pipe pairing operation may stop due to protection control.
· If an error occurs while the Auto pipe pairing operation is running, check the error code and take actions.
· If you cannot finish the Auto pipe pairing operation because of the previous reasons, set the pipe addresses manually by referring to Setting the Pipe Addresses Manually.

English 61

Performing final checks and trial operation

1 Before supplying the power, use DC 500 V insulation resistance tester to measure the power (3 phase: R, S, T/ 1 phase: L, N) terminal and the outdoor unit grounding.
Measurement should be over 30M. 2 Before supplying the power, use a voltmeter and phase tester
to check the voltage and the phase.
R, S, T, N terminal: check if the voltage is within 380-415 V between wires (R-S, S-T, T-R) and 200240 V between phases (R-N, S-N, T-N) before turning on the switch.
CAUTION
· Never measure the communication terminal since communication circuit may get damaged.
· Check for short-circuit of the communication terminal with a general circuit tester.

N
230V 230V 230V
T
400V 400V
S
400V
R

< ELB >

3 Check if the R-410A indoor units are connected.
4 When N phase is not correctly connected to R, S and T phase, over-voltage protection control will be in effect and it will cutoff the power of the PCB. Check the power cable connection of the N phase if the PCB is not turned on.
5 Check the following after the installation is completed.

Installation work

Outdoor unit Indoor unit

Refrigerant pipe work

Drain pipe work Electrical wiring work
Setting address Option

· Have you checked the external surface and the inside of the outdoor unit? · Is there any possibility of short-circuit caused by the heat of an outdoor unit? · Is the place well-ventilated and ensures space for service? · Is the outdoor unit fixed securely to withstand any external force?
· Have you checked the external surface and the inside of the indoor unit? · Is there enough space for service? · Have you checked if the center of the indoor unit is ensured and it is installed horizontally?
· Have you selected correct pipes? · Are the liquid and gas valve open? · Is the total number of connected indoor units within the allowable range? · Are the length and the height difference between the refrigerant pipes within the allowable range? · Are the branch joints properly installed? · Did you check the connection of liquid and gas pipes? · Have you selected correct insulator for pipes and insulated them correctly? · Did you insulate the pipes and connection part correctly? · Is the quantity of the additional refrigerant correctly weighed in? (You must record the amount of
additional refrigerant on the service record paper placed inside of the outdoor unit.)
· Have you checked if the drain pipes of the indoor and outdoor unit are connected together? · Have you completed the drain test? · Is the drain pipe properly insulated?
· Are the power cable and communication cable tightened firmly on the terminal board within the range of rated tightening torque?
· Have you checked for cross-connection of the power and communication cables? · Have you performed the earthing work 3 to the outdoor unit? · Did you make sure to use 2-core cable (not multi-core cable) for the communication cable? · Is the length of the wire within allowed range? · Is the wiring route correct?
· Did you set the address of the indoor and outdoor units properly? · Did you set the address of the indoor and outdoor units properly? (When using multiple remote
controllers)
· If there is a possibility of the outdoor unit from vibrating, check whether the anti-vibration frame is correctly installed.

Installation Procedure

62 English

Installation Procedure

CAUTION
Precautions before test operation
· When the outdoor temperature is low, turn on the main power 6 hours before beginning the operation.
If you start the operation immediately after turning on the main power, it may cause serious damage to the part in the product.
· Do not touch the refrigerant pipe during or right after the operation.
Refrigerant pipe may be hot or cold during or right after the operation depending on the status of the refrigerant which flows through the refrigerant pipe, compressor and other parts of the refrigerant cycle.
· Do not operate the product with its panel or protection nets off.
There is risk of personal injury from the parts rotating, heated or with the high voltage.
· Do not turn off the main power immediately after stopping the operation.
Wait for at least 5 minutes before turning off the main power. If not, water leakage or other problems may occur.
· Connect all the indoor units and the power supply for the outdoor unit and run auto address setting. Run auto address setting even after changing the indoor unit PCB.

Checklist before auto trial operation
1 Check the power cable and communication cable of the indoor and outdoor unit.
2 Supply power to the outdoor unit 6 hours before trial operation to pre-heat the compressor.
3 Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase.
R, S, T, N terminal: check if the voltage is within 380 -415 V between wires (R-S, S-T, T-R) and 200-240 V between phases (R-N, S-N, T-N).
4 When the power is supplied, outdoor unit will execute tracking to check the indoor unit connection and other optional functions.
5 Write down the installation report on the service history report paper attached on the front part of the control box.

CAUTION
· Supply power to the outdoor unit 6 hours before auto trial operation to pre-heat the compressor.
6 Guaranteed range of auto trial operation
For precise judgment, you must perform auto trial operation in below indoor/outdoor temperature condition.

Outdoor temperature (°C)

50 40 30 20 10 0 -10 -20
5 10 15 20 25 30 35 40 45
Indoor temperature (°C)

Cooling Heating

In Auto trial operation, product will automatically select either cooling or heating mode and operate in selected mode.
In the temperature range marked with slashed pattern, system protection control may trigger during operation.(If the system protection control is enabled, it can be hard to get the precise judgment after the auto trial operation.)
When the temperature is outside of guaranteed range, accuracy of judgment on auto trial operation may decrease near boarder line area.
If all indoor units are connected with only hydro unit, it is operated by heating mode. If outdoor temperature is above 35 , auto trial operation is skipped and UP mode will be cleared.
Auto trial operation
1 If the Auto Trial Operation is not completed, normal operation will be prohibited. When the auto trial operation is not completed, UP (UnPrepared) will appear on the segment after the communication check and restrict compressor from operating. (UP Mode will be cleared automatically when auto trial mode is completed.) Auto trial operation may take 20 minutes to maximum 2 hours depending on the operation status. During auto trial operation, noise can be generated due to valve inspection. (Check the product if abnormal noise occurs continuously)
2 When error occurs during auto trial operation, check the error code and take appropriate measures. Refer to next couple of pages when E503, E505 or E506 error occurs.
3 When auto trial operation ends, use S-NET pro or S-CHECKER to issue a result report. Refer to service manual if you have any items with "NG" on the result report. After taking appropriate measure for the items with "NG", run the auto trial operation again.
4 Check the following items by running trial operation (cooling/heating). Check if cooling/heating operation performs normally. Individual indoor unit control: Check for air flow direction and fan speed. Check for abnormal operation noise from the indoor and outdoor unit. Check for proper draining from the indoor unit during cooling operation. Use S-NET pro to check the detail operation status.
5 Explain to the user how to use the air conditioner according to the user's manual.
6 Hand over the installation manual to the customer so they can keep it with them.
CAUTION
· Make sure to close the top and bottom part of the outdoor unit cabinet during operation. If you operate the unit with the front cabinet open, it may cause damage to the product and you may not get the precise data from S-NET pro.

English 63

Inspection and trial operation

Measure to take when E503 error occurs

Is the ball valve on the outdoor unit opened?
Yes
Has the correct amount of additional refrigerant been injected into the indoor unit and liquid line?

No. Take corrective measures.
No. Take corrective measures.

Yes
Perform Trial Operation (cooling/heating) - See the instructions on Key operation modes.
Yes

Are the 4-way valve, Main EEV and pressure sensors operating properly?

No. Take corrective measures.

Yes Is the operation cycle normal?
Yes Perform Auto Trial Operation again

No. Take corrective measures.

Symptoms for abnormal operation of the 4way valve Abnormal noise during compressor operation, Increase in the suction temperature.
Symptoms for abnormal operation of the Main EEV It is not possible to control the superheat (SH) It is not possible to secure a DSH of higher than 20K
For more information, see the troubleshooting in the service manual.
CAUTION
· If service valve (ball valve) check is required, corresponding outdoor unit will display the error. · If service valve (ball valve) check is required, auto detection mode will be terminated. Check service valve (ball valve) of gas pipe and
liquid pipe at the same time when checking service valve (ball valve). · When 4way valve, Main EEV detection is needed, run heating trial operation for more than 1 hour and analyze the data to check for a problem. · If there's frost formed in outdoor unit or the outdoor unit is operating in defrost operation, it may be hard to detect problem normally.
In this case, perform Trial operation or Forced defrost operation to eliminate the frost, and then perform Auto Trial Operation again. · If the operation range is not within guaranteed range, error may occur even though the product is normal. · To replace a component or inspect the PBA, be sure to cut off the power supply first. If inspection must be performed with the power
supply on, exercise extra care to prevent electric shock.

64 English

Appendix

Measure to take when E505 or E506 error occurs
Keep all the outdoor units in vacuum mode for 5 min. - See the instructions on Key operation modes.

No. Is the deviation between pressure sensors on outdoor units greater than 0.2MPa?

Yes
No. Is the ball valve (service valve) on each outdoor
unit opened?
Yes

Open the valve.

Are the pressure sensor connectors properly connected to the PBA?
Yes

No. Take corrective measures.

Is the pin-to-pin voltage between pins # 3 and 4 of the pressure sensor terminal* on
the Hub PBA 5V?

No. Replace the Hub PBA.

Yes

Is the actual pressure* different from the value on the pressure sensor?

Yes Replace the pressure sensor.

* The actual pressure can be checked by calculating the saturation pressure for the outdoor air temperature or connecting a manifold gauge.
No.

Perform Auto Trial Operation again

For more information, see the troubleshooting in the service manual.
CAUTION
· When the auto trial operation for pressure sensor was executed before the pressure of the outdoor unit is equalized (when there's close to no difference between high and low pressure), error may occur even though the product is normal.
· If pressure sensor check is required , error will be displayed on all installed outdoor units. · If pressure sensor check is required, outdoor units will terminate auto trial operation mode automatically. · To check for the pressure sensor with the problem, run trial operation for more than 1 hour and analyze the data to check for a problem. · To replace a component or inspect the PBA, be sure to cut off the power supply first. If inspection must be performed with the power
supply on, exercise extra care to prevent electric shock.

Appendix

English 65

Automatic refrigerant amount detection function
This function checks amount of refrigerant in the system through refrigerant amount detection operation Start

Press the K2 tact switch 5 times

Enter the operation in S-Net pro

Checking the amount of

refrigerant automatically

check the result on display after the operation

Connect S-Net Pro

Check the result with the function of the Refrigerant Check
Normal / Excessive / Shortage

Judgment not available

End

CAUTION
· If the temperature is out of the guaranteed range below, exact result will not be obtained. Indoor: 20~32 °C Outdoor: 5~43 °C
· If the operation cycle is not stable, the operation of refrigerant amount check may be forcibly finished. · Accuracy of the result may decrease if the product has not been operated for a long period of time or Heat mode has been operated
before running the function of refrigerant amount check. Therefore, use the function of refrigerant amount check after operating the product in Cool mode for at least 30 minutes. · Product may trigger system protection operation depending on the installation environment. In this case, the result of refrigerant amount check may not be accurate. Actions to take for the check result · Excessive amount of refrigerant Discharge 10% of total amount of refrigerant and restart the refrigerant amount check. · Insufficient amount of refrigerant Add 10% of the total amount of refrigerant and restart the refrigerant amount check. · Judgment not available Check if the function of refrigerant amount check is executed within the guaranteed temperature range. Run trial operation to
check if there are other problems on the system.

Appendix

66 English

Product Information

Model AM080AXVGGH AM100AXVGGH AM120AXVGGH AM140AXVGGH AM160AXVGGH AM180AXVGGH AM200AXVGGH AM220AXVGGH AM240AXVGGH AM260AXVGGH AM080AXVGGR AM100AXVGGR AM120AXVGGR AM140AXVGGR AM160AXVGGR AM180AXVGGR AM200AXVGGR AM220AXVGGR AM240AXVGGR AM260AXVGGR AM080AXVAGH AM100AXVAGH AM120AXVAGH AM140AXVAGH AM160AXVAGH AM180AXVAGH AM200AXVAGH AM220AXVAGH AM240AXVAGH AM260AXVAGH AM100AXVDGH AM120AXVDGH AM140AXVDGH AM160AXVDGH AM180AXVDGH

Net Weight(kg) 194 205 205 233 262 268 268 301 325 325 199 211 211 237 268 274 274 309 332 332 175 185 205 207 242 242 268 301 325 325 185 205 207 242 242

Net Size ( W×H×D, mm) 930x1695x765 930x1695x765 930x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 930x1695x765 930x1695x765 930x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 930x1695x765 930x1695x765 930x1695x765 930x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 1295x1695x765 930x1695x765 930x1695x765 930x1695x765 1295x1695x765 1295x1695x765

Appendix

English 67

References

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	Samsung EHS Mono Outdoor Unit Installation Manual Comprehensive installation manual for the Samsung EHS Mono Air to Water Heat Pump Outdoor Unit (Model Series AE*CXYD), covering safety, installation procedures, piping, electrical connections, system configuration, testing, and troubleshooting.
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Air conditioner - Installation manual - Top Service

Air conditioner - Top Service

References

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