Contents
1. Notes for installation and maintenance Safety Precautions
Important!
Please read the safety precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance. Please follow the instructions below.
- The installation or maintenance must accord with the instructions.
- Comply with all national electrical codes and local electrical codes.
- Pay attention to the warnings and cautions in this manual.
- All installation and maintenance shall be performed by a distributor or qualified person.
- All electric work must be performed by a licensed technician according to local regulations and instructions given in this manual.
- Be cautious during installation and maintenance. Prohibit incorrect operation to prevent electric shock, casualty, and other accidents.
Warnings
Electrical Safety Precautions
- Cut off the power supply of the air conditioner before checking and maintenance.
- The air conditioner must use a specialized circuit and prohibit sharing the same circuit with other appliances.
- The air conditioner should be installed in a suitable location and ensure the power plug is touchable.
- Make sure each wiring terminal is connected firmly during installation and maintenance.
- Ensure the unit is adequately grounded. The grounding wire cannot be used for other purposes.
- Must apply protective accessories such as protective boards, cable-cross loops, and wire clips.
- The live wire, neutral wire, and grounding wire of the power supply must correspond to the live wire, neutral wire, and grounding wire of the air conditioner.
- The power cord and power connection wires cannot be pressed by hard objects.
- If the power cord or connection wire is broken, it must be replaced by a qualified person.
- If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire from the manufacturer or distributor. Prohibit prolonging the wire yourself.
- For air conditioners without a plug, an air switch must be installed in the circuit. The air switch should be all-pole parting, and the contact parting distance should be more than 3mm.
- Make sure all wires and pipes are connected properly and the valves are opened before energizing.
- Check if there is electric leakage on the unit body. If yes, please eliminate the electric leakage.
- Replace the fuse with a new one of the same specification if it is burnt down; do not replace it with a copper wire or conducting wire.
- If the unit is to be installed in a humid place, a circuit breaker must be installed.
Installation Safety Precautions
- Select the installation location according to the requirements of this manual (see the installation part).
- Handle unit transportation with care; the unit should not be carried by only one person if it is more than 20kg.
- When installing the indoor unit and outdoor unit, a sufficient fixing bolt must be installed, and the installation supporter must be firm.
- Wear a safety belt if the working height is above 2m.
- Use equipped components or appointed components during installation.
- Make sure no foreign objects are left in the unit after finishing installation.
Improper installation may lead to fire hazard, explosion, electric shock, or injury.
Safety precautions for Installing and Relocating the unit
To ensure safety, please be mindful of the following precautions.
Warnings
When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.
When installing or moving this unit, do not charge the refrigerant which does not comply with that on the nameplate or use unqualified refrigerant.
Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction, or even serious safety accidents.
When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running in cooling mode. Then, fully close the valve at the high-pressure side (two-way valve). About 30-40 seconds later, fully close the valve at the low-pressure side (3-way valve), immediately stop the unit, and disconnect power. Please note that the time for refrigerant recovery should not exceed 1 minute.
If refrigerant recovery takes too much time, it may cause compressor overheat, resulting in injury.
During refrigerant recovery, make sure that the two-way valve and 3-way valve are fully closed and power is disconnected before detaching the connecting pipe.
If the compressor starts running when the valves are open and the connecting pipe is not yet connected, air will be sucked in, causing pressure rise and then compressor overheat or gas leak, resulting in injury.
When installing the unit, make sure that the connecting pipe is securely connected before the compressor starts running.
If the compressor starts running when the valves are open and the connecting pipe is not yet connected, air will be sucked in, causing pressure rise and then compressor overheat or gas leak, resulting in injury.
Prohibit installing the unit at a place where there may be leaked corrosive gas or flammable gas. If there is leaked gas around the unit, it may cause explosion and other accidents.
Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local authorized service center and ask for a proper electric wire.
Poor connection may lead to electric shock or fire.
Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so that their terminals receive no external stresses.
Electric wires with insufficient capacity, wrong wire connections, and insecure wire terminals may cause electric shock or fire.
Introduction to Refrigerants R32 & R290
The refrigerants used for air conditioners are environmentally friendly hydrocarbons R32 and R290. The two kinds of refrigerants are combustible and odorless. Moreover, they can burn and explode under certain conditions. However, there will be no risk of burning and explosion if you comply with the following table to install your air conditioner in a room with an appropriate area and use it correctly.
Compared with ordinary refrigerants, Refrigerants R32 & R290 are environmentally friendly and do not destroy the ozone sphere, and their values of greenhouse effect are also very low.
R32/R290 Air Conditioner Installation Area Requirement
m1=(4m³)×LFL, m2=(26m³) ×LFL, m3=(130m³) ×LFL
Where LFL is the lower flammable limit in kg/m³, R290 LFL is 0.038kg/m³, R32 LFL is 0.306kg/m³.
For appliances with a charge amount m1<M<m2:
The maximum charge in a room shall be in accordance with the flowing: Mmax=2.5×(LFL)(5/4) ×h0×A1/2
The required minimum floor area Amin to install an appliance with refrigerant charge M(kg) shall be in accordance with following: Amin= (M/ (2.5 x (LFL)(5/4) x h0)) ²
Where:
- Mmax is the allowable maximum charge in a room, in kg;
- M is the refrigerant charge amount in appliance, in kg;
- Amin is the required minimum room area, in m²;
- A is the room area, in m²;
- LFL is the lower flammable limit, in kg/m³;
- h0 is the installation height of the appliance, in meters for calculating Mmax or Amin, 1.8 m for wall mounted.
Table GG.1 - Maximum charge (kg)
| Category | LFL (kg/m³) | h0 (m) | Floor area (m²) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 10 | 15 | 20 | 30 | 50 | |||||
| R290 0.038 | 0.6 | 0.05 | 0.07 | 0.08 | 0.1 | 0.11 | 0.14 | 0.18 | |
| 1 | 0.08 | 0.11 | 0.03 | 0.06 | 0.09 | 0.2 | 0.3 | ||
| 1.8 | 0.15 | 0.2 | 0.24 | 0.29 | 0.34 | 0.41 | 0.53 | ||
| 2.2 | 0.18 | 0.24 | 0.29 | 0.36 | 0.41 | 0.51 | 0.65 | ||
| R32 0.306 | 0.6 | 0.68 | 0.9 | 1.08 | 1.32 | 1.53 | 1.87 | 2.41 | |
| 1 | 1.14 | 1.51 | 1.8 | 2.2 | 2.54 | 3.12 | 4.02 | ||
| 1.8 | 2.05 | 2.71 | 3.24 | 3.97 | 4.58 | 5.61 | 7.254 | ||
| 2.2 | 2.5 | 3.31 | 3.96 | 4.85 | 5.6 | 6.86 | 8.85 | ||
Table GG.2 - Minimum room area (m²)
| Category | LFL (kg/m³) | h0 (m) | Charge amount (M) (kg) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.152kg | 0.228kg | 0.304kg | 0.456kg | 0.608kg | 0.76kg | 0.988kg | |||
| R290 0.038 | 0.6 | / | 82 | 146 | 328 | 584 | 912 | 1514 | |
| 1 | / | 30 | 53 | 118 | 210 | 328 | 555 | ||
| 1.8 | / | 9 | 16 | 36 | 65 | 101 | 171 | ||
| 2.2 | / | 6 | 11 | 24 | 43 | 68 | 115 | ||
| R32 0.306 | 0.6 | 1.224kg | 1.836kg | 2.448kg | 3.672kg | 4.896kg | 6.12kg | 7.956kg | |
| 1 | / | 29 | 51 | 116 | 206 | 321 | 543 | ||
| 1.8 | / | 10 | 19 | 42 | 74 | 116 | 196 | ||
| 2.2 | / | 3 | 6 | 13 | 23 | 36 | 60 | ||
| 2 | 4 | 9 | 15 | 24 | 40 | ||||
Caution:
- Please contact the nearest after-sale service center when maintenance is necessary. At the time of maintenance, the maintenance personnel must strictly comply with the Operation Manual provided by the corresponding manufacturer, and any non-professional is prohibited from maintaining the air conditioner.
- It is necessary to comply with the provisions of gas-related national laws and regulations.
- It is necessary to clear away the refrigerant in the system when maintaining or scrapping an air conditioner.
- When filling the combustible refrigerant, any of your careless operations may cause serious injury or injuries to human body or objects.
- A leak test must be done after the installation is completed.
- It is a must to do the safety inspection before maintaining or repairing an air conditioner using combustible refrigerant in order to ensure that the fire risk is reduced to minimum.
1) Installation Safety
Installation Safety Principles
Site Safety
- ? Open Flames Prohibited
Operation Safety
- ? Open Flames Prohibited
- ? Ventilation Necessary
Installation Safety
- ⚡ Mind Static Electricity
- Must wear protective clothing and anti-static gloves
- ? Don't use mobile phone
Refrigerant Leak Detector: The left picture is the schematic diagram of a refrigerant leak detector.
Appropriate Installation Location:
Installation Safety Caution:
- The installation should be in a well-ventilated location.
- When installing or maintaining an air conditioner using Refrigerant R32/R290, the location should be free from open flames or any other goods at temperatures higher than 370°C for R290 / 548°C for R32 which easily produce open fire, including welding, smoking, or drying ovens.
- When installing an air conditioner of R32/R290, it is necessary to take appropriate anti-static measures such as wearing anti-static clothing and gloves.
- It is necessary to choose the location for installation or maintenance where the air inlets and outlets of the indoor and outdoor units are not surrounded by obstacles or close to any heat source or combustible and/or explosive environment.
- If the indoor unit suffers refrigerant leak during installation, it is necessary to immediately turn off the valve of the outdoor unit, and all personnel should leave until the refrigerant leaks completely for 15 minutes. If the product is damaged, it is a must to carry such damaged product back to the maintenance station, and it is prohibited to weld the refrigerant pipe or conduct other operations on the user's site.
- It is necessary to choose the place where the inlet and outlet air of the indoor unit is even.
- It is necessary to avoid places where there are other electrical products, power switch plugs and sockets, kitchen cabinets, beds, sofas, and other valuables directly under the lines on two sides of the indoor unit.
Special tools:
| Tool Name | Requirement(s) for Use |
|---|---|
| Mini Vacuum Pump | It should be an explosion-proof vacuum pump; can ensure certain precision and its vacuum degree should be lower than 10Pa. |
| Filling Device | It should be a special explosion-proof filling device; have certain precision and its filling deviation should be less than 5g. |
| Leak Detector | It should be calibrated regularly; and its annual leak rate should not exceed 10g. |
| Concentration Detector | A) The maintenance site should be equipped with a fixed-type combustible refrigerant concentration detector and connected to a safeguard alarm system; its error must be not more than 5%. B) The installation site should be equipped with a portable combustible refrigerant concentration detector which can realize two-level audible and visual alarm; its error must be not more than 10%. C) The concentration detectors should be calibrated regularly. D) It is necessary to check and confirm the functions before using the concentration detectors. |
| Pressure Gauge | A) The pressure gauges should be calibrated regularly. B) The pressure gauge used for Refrigerant 22 can be used for Refrigerants R290 and R161; the pressure gauge used for R410A can be used for Refrigerant 32. |
| Fire Extinguisher | It is necessary to carry fire extinguisher(s) when installing and maintaining an air conditioner. On the maintenance site, there should be two or more kinds of dry powder, carbon dioxide, and foam fire extinguishers, and these fire extinguishers should be placed at stipulated positions, with eye-catching labels and in handy places. |
Maintenance
1) Inspections before maintenance.
(1) Inspection of maintenance environment
- There should be no leaked refrigerant in the room before operation.
- It is only allowed to operate in a room which meets the area requirement on the nameplate.
- It is necessary to maintain the room in a continuous ventilation state at the time of maintenance.
- The room for maintenance should be free from fire or welding, smoking, drying ovens, or any other sources that easily produce fire (temperature higher than 370°C for R290 / 548°C for R32).
- During maintenance, it is necessary to ensure that any person's mobile phone or any electronic product with radiation in the room is powered off.
- The maintenance area should be equipped with a dry powder or carbon dioxide fire extinguisher that is functional.
(2) Inspection of maintenance equipment
- Check if the maintenance equipment is applicable to the refrigerant and only use professional equipment recommended by the air conditioner manufacturer.
- Check if the refrigerant leak detector has been calibrated. The set maximum alarm concentration of the refrigerant leak detector should not exceed 25% of the lower explosion limit (LEL); the refrigerant leak detector must be working during maintenance.
2) Inspection of air conditioner
- It is necessary to ensure that the air conditioner has a reliable ground connection before maintenance.
- Make sure the power supply to the air conditioner is off. Before maintenance, it is necessary to cut off the power and discharge the capacitor power used in the air conditioner. If power supply is needed during maintenance, it is necessary to perform ongoing leak detection at the most dangerous position/point to avoid potential danger.
- Check the warning labels on the air conditioner to ensure they are in good condition. It is necessary to replace damaged or smeared warning labels.
3). Leak inspection before maintenance
Before maintenance, use the leak detector or concentration detector (pump-type) recommended by the corresponding air conditioner manufacturer to check the air conditioner for leaks.
Warning: If a leak may exist, it is necessary to move all fire sources from the site or extinguish fire and then immediately shut off the air conditioner. Meanwhile, it is necessary to ensure the area is well-ventilated.
4). Safety principles during the maintenance
- At the time of maintenance, it is necessary to ensure the site is well-ventilated.
- It is prohibited to use fire, including welding, smoking, or other purposes. It is prohibited to use mobile phones.
- At the time of maintenance, if the relative humidity is lower than 40%, it is necessary to wear anti-static clothing and gloves.
- If combustible refrigerant is found leaking during maintenance, it is a must to immediately take forced ventilation and plug up the leak source.
- If the product is damaged to the extent that it is necessary to open the refrigerating system for maintenance, it is a must to carry the product back to the maintenance station for maintenance. (It is prohibited to weld the refrigerant pipe or conduct other operations on the user's site.)
- It is necessary to return the air conditioner to its initial state if visiting service is required again due to lacking spare parts during maintenance. Moreover, it is a must to ensure that the refrigerating system has a secure ground connection.
- If it is necessary to provide visiting service with a refrigerant cylinder, the volume of refrigerant filled in such cylinder should not exceed the stipulated value. When such cylinder is stored in a vehicle or placed on the installation or maintenance site, it is necessary to place it vertically and securely and keep it away from any place with heat sources, combustion sources, radiation sources, or electrical equipment.
5). Requirements for the site of maintenance-station
- The maintenance location should be well-ventilated, with leveled ground, and not in a basement.
- The maintenance area should be divided into welding and non-welding areas, both of which should be clearly labeled. There should be a certain safety distance between the two areas. The maintenance location should be equipped with ventilating and air-exhausting equipment to prevent refrigerant gas from aggregating.
- It is necessary to provide relevant instruments such as a combustible refrigerant leak detector and have a leak detecting instrument management system. It is necessary to confirm that the leak detector can work normally before maintenance.
- The main power switch should be set outside the maintenance location and equipped with protective (explosion-proof) devices.
- It is necessary to provide firefighting devices such as dry powder or carbon dioxide fire extinguishers appropriate for extinguishing electrical fires and keep these firefighting devices in usable condition.
- Temporary wires and sockets are prohibited on the maintenance location.
6). Requirements for filling the refrigerants
- It is necessary to use nitrogen to clear the cyclic system before operating the refrigerating system and vacuumize the outdoor unit for 30 minutes at least.
- It is necessary to ensure that there is no cross-contamination among different refrigerants when using the refrigerant filling device. The total length, including the refrigerant pipeline, should be as short as possible to reduce residual refrigerant inside the pipeline.
- It is necessary to vertically place the refrigerant storage tanks.
- It is necessary to ensure that the refrigerating system is in ground connection before the refrigerant is filled.
- When filling the refrigerant, it is necessary to fill the corresponding type and volume of refrigerant as per the requirements on the product nameplate, and overfilling is prohibited.
- It is necessary to seal the system in a safe sealing way after maintaining the refrigerating system.
- It is necessary to ensure that the maintenance will not damage or reduce the safety protection grade of the original system.
7). In-maintenance welding
- It is necessary to ensure that the maintenance location is well-ventilated.
- Before welding the outdoor unit, it is a must to confirm that the refrigerating system has been drained and cleaned, and ensure that there has been no refrigerant in the outdoor unit.
- It is necessary to close the stop valve of the outdoor unit when using a welding gun for maintenance work such as cutting and welding.
8). Maintenance of electrical components
- It is necessary to use a special leak detector to check whether the maintained electrical parts location has refrigerant leaks.
- It is not allowed to refit, remove, or cancel any component with a safety protection function after finishing the maintenance process.
- When maintaining the sealed parts, it is necessary to turn off the power of the air conditioner before opening the sealing cover. When power supply is needed, it is necessary to perform ongoing leak detection at the most dangerous position to prevent potential danger.
- It is necessary to specially note that the maintenance of electrical components will not affect the replacement of the protective cover.
- In order to ensure that the sealing function is not damaged after maintenance or the sealing material will not lose its effect of preventing combustible gas leak due to aging, substitute components should meet the requirements recommended by the air conditioner manufacturer.
Warning: Before doing the trial operation after finishing the maintenance, it is a must to use a practical leak detector to inspect the leakage and reliability of ground connection to ensure no refrigerant leakage and reliable ground connection.
The refrigerant storage tanks should be separately placed in a well-ventilated place at temperatures ranging from -10℃ to 50℃ and labeled with warning labels.
9). Emergency Accident Handling
A maintenance station should establish emergency handling plans. It is necessary to take appropriate precautionary measures in work. For example, it is prohibited to enter the location with any kindling material and it is prohibited to wear clothing or shoes which easily produce static.
Handling suggestions when a large amount of combustible refrigerant leaks:
- It is necessary to immediately operate the ventilating equipment while cutting off other power supply and evacuating the affected personnel urgently from the location.
- It is necessary to inform near residents of evacuation for over 20 meters from the location, make an alarm call, set the emergency area, and prohibit irrelevant personnel and vehicles from approaching.
- Professional firefighters should wear anti-static clothing to handle the emergency on the site and cut off the source of the leak.
- It is necessary to use nitrogen for blowing the site, especially the low-lying positions, to clear away the residual combustible refrigerant gas from any area nearby and surrounding the leak point, and use a handheld detector for detection. Do not clear the alarm until the concentration of refrigerant is zero.
2 Installation
2.1 Installation Dimension Diagram
This section describes the required clearances for installing the indoor and outdoor units. The diagram illustrates the necessary space around the units for proper airflow, heat exchange, and maintenance.
Indoor Unit Clearances:
- Space to the ceiling: At least 15cm
- Space to the wall (sides): At least 15cm
- Space to the obstruction (front): At least 200cm
- Space to the obstruction (sides): At least 30cm
Outdoor Unit Clearances:
- Space to the wall (sides): At least 15cm
- Space to the obstruction (front): At least 250cm
- Space to the obstruction (sides): At least 50cm
- Space to the floor: At least 30cm
- Space to the obstruction (rear): At least 30cm
The diagram also shows the placement of the drainage pipe and connecting wire.
2.2 Accessory
The following accessories are included with the unit:
- Remote controller
- Remote controller supporter
- Batteries
- Vinyl tape
- Drain hose
- Hole cover
- Screw
- Insulation material
2.3 Tools
The following tools are required for installation:
| Tool Name | Picture Description |
|---|---|
| Standard Wrench | A standard wrench. |
| Adjustable/ Crescent Wrench | An adjustable wrench. |
| Torque Wrench | A torque wrench. |
| Hex Keys or Allen Wrenches | A set of hex keys. |
| Drill & Drill Bits | A power drill with various drill bits. |
| Hole Saw | A hole saw attachment for the drill. |
| Pipe Cutter | A tool for cutting pipes. |
| Screw drivers (Phillips & Flat blade) | Phillips and flathead screwdrivers. |
| Manifold and Gauges | A manifold gauge set for refrigerant systems. |
| Level | A spirit level. |
| Flaring tool | A tool for flaring pipe ends. |
| Vacuum Pump | A vacuum pump for evacuating the system. |
| Safety Glasses | Protective eyewear. |
| Work Gloves | Protective gloves. |
| Refrigerant Scale | A scale for measuring refrigerant. |
| Micron Gauge | A gauge to measure deep vacuum levels. |
| Clamp on Amp Meter | A clamp meter for measuring electrical current. |
2.4 Position
Indoor unit
- Install the indoor unit level on a strong wall that is not subject to vibrations.
- The inlet and outlet ports should not be obstructed; the air should be able to blow all over the room.
- Do not install the unit near a source of heat, steam, or flammable gas.
- Do not install the unit in too windy or dusty places.
- Do not install the unit where people often pass.
- Select a place where the air discharge and operating sound level will not disturb the neighbors.
- Install the unit where connection between the indoor and outdoor unit is as easy as possible.
- Install the unit where it is easy to drain the condensed water.
- Check the machine operation regularly and leave the necessary spaces as shown in the picture.
- Install the indoor unit where the filter can be easily accessible.
OUTDOOR UNIT
- Do not install the outdoor unit near sources of heat, steam, or flammable gas.
- Do not install the unit in too windy or dusty places.
- Do not install the unit where people often pass.
- Select a place where the air discharge and operating sound level will not disturb the neighbors.
- Avoid installing the unit where it will be exposed to direct sunlight (otherwise use a protection, if necessary, that should not interfere with the air flow).
- Leave the spaces as shown in the picture for the air to circulate freely.
- Install the outdoor unit in a safe and solid place.
- If the outdoor unit is subject to vibration, place rubber gaskets onto the feet of the unit.
- Install the indoor unit in the room to be air conditioned, avoiding installation in corridors or communal areas.
- Install the indoor unit at a height of at least 2.5m from the ground.
- Minimum space to be left (mm) is shown in the picture.
2.5 Electricity and wiring
Safety precaution
- Must follow the electric safety regulations when installing the unit.
- According to the local safety regulations, use a qualified power supply circuit and air switch.
- Make sure the power supply matches the requirement of the air conditioner. Unstable power supply or incorrect wiring may result in electric shock, fire hazard, or malfunction. Please install proper power supply cables before using the air conditioner.
The power cord should be selected according to the following specifications sheet:
| Appliance Amps(A) | Wire Size (mm²) |
|---|---|
| 5 | 0.75 |
| 10 | 1.0 |
| 13 | 1.5 |
| 18 | 1.6 |
| 25 | 2.0 |
| 30 | 2.5 |
2.6 IDU Installation
To install, proceed as follows:
2.6.1 Installation of the mounting plate.
- Using a level, position the mounting plate in a perfectly square orientation, vertically and horizontally.
- Drill 32mm deep holes in the wall to fix the plate.
- Insert the plastic anchors into the holes.
- Fix the mounting plate using the provided tapping screws.
- Check that the mounting plate is correctly fixed.
The diagram shows the mounting plate installation.
2.6.2 Drilling a hole in the wall for the piping
- Decide where to drill the hole in the wall for the piping (if necessary) according to the position of the mounting plate.
- Install a flexible flange through the hole in the wall to keep the latter intact and clean.
The diagram shows the hole for piping, indicating it should slope downwards towards the exterior to prevent leakage.
2.6.3 Electrical connections---Indoor unit
- Lift the front panel.
- Remove the cover as indicated in the picture (by removing a screw or by breaking the hooks).
- For the electrical connections, refer to the circuit diagram on the right part of the unit under the front panel.
- Connect the cable wires to the screw terminals by following the numbering. Use wire size suitable for the electric power input (refer to the nameplate on the unit) and according to all current national safety code requirements.
- The cable connecting the outdoor and indoor units must be suitable for outdoor use.
- The plug must be accessible even after the appliance has been installed so that it can be pulled out if necessary.
- An efficient earth connection must be ensured.
- If the power cable is damaged, it must be replaced by an authorized Service Centre.
The diagram shows the front panel, wiring diagram, and terminal block cover.
Refrigerant piping connection
The piping can be run in the 3 directions indicated by numbers in the picture. When the piping is run in direction 1 or 3, cut a notch along the groove on the side of the indoor unit with a cutter.
Run the piping in the direction of the wall hole and bind the copper pipes, the drain pipe, and the power cables together with tape, with the drain pipe at the bottom, so that water can flow freely.
2.6.4 Connecting the pipes.
- Do not remove the cap from the pipe until connecting it, to avoid dampness or dirt from entering.
- If the pipe is bent or pulled too often, it will become stiff. Do not bend the pipe more than three times at one point.
- When extending the rolled pipe, straighten the pipe by unwinding it gently as shown in the picture.
The diagram illustrates the correct and incorrect ways to extend a rolled pipe.
Wrap the insulation material around the connecting portion.
Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap.
Wrap the area which accommodates the rear piping housing section with vinyl tape.
2.6.5 Connections to the indoor unit
- Remove the indoor unit pipe cap (check that there is no debris inside).
- Insert the flare nut and create a flange at the extreme end of the connection pipe.
- Tighten the connections by using two wrenches working in opposite directions.
The diagram shows the indoor unit tubing, flare nut, and pipings, and how to tighten connections.
The table below shows pipe sizes and torque for different capacities:
| Capacity (Btu/h) | Pipe Size (Torque) | |
|---|---|---|
| Gas | Liquid | |
| 7/9/12K | 3/8" (4.2kg.m) | 1/4" (1.8kg.m) |
| 18K | 1/2" (5.5kg.m) | 1/4" (1.8kg.m) |
| 24K | 5/8" (6.6kg.m) | 3/8" (4.2kg.m) |
2.6.6 Indoor unit condensed water drainage
The indoor unit condensed water drainage is fundamental for the success of the installation.
- Place the drain hose below the piping, taking care not to create siphons.
- The drain hose must slant downwards to aid drainage.
- Do not bend the drain hose or leave it protruding or twisted, and do not put the end of it in water. If an extension is connected to the drain hose, ensure that it is lagged when it passes into the indoor unit.
- If the piping is installed to the right, the pipes, power cable, and drain hose must be lagged and secured onto the rear of the unit with a pipe connection.
The diagram shows the indoor unit drain hose, adhesive, and vinyl tape.
Fasten the drain port in the 25mm hole placed in the part of the unit as shown in the picture.
Connect the drain port and the drain pipe. Pay attention that water is drained in a suitable place.
Insert the pipe connection into the relative slot.
Press to join the pipe connection to the base.
The diagrams show the correct and incorrect ways to connect the pipe connection.
2.7 ODU Installation
The outdoor unit should be installed on a solid wall and fastened securely.
The following procedure must be observed before connecting the pipes and connecting cables: decide the best position on the wall and leave enough space to be able to carry out maintenance easily.
- Fasten the support to the wall using screw anchors which are particularly suited to the type of wall.
- Use a larger quantity of screw anchors than normally required for the weight they have to bear to avoid vibration during operation and remain fastened in the same position for years without the screws becoming loose.
- The unit must be installed following the national regulations.
Outdoor unit condensed water drainage (only for heat pump models)
The condensed water and the ice formed in the outdoor unit during heating operation can be drained away through the drain pipe.
The diagram shows the outdoor unit drain port and drain pipe connection.
Electronic connections
- Take the cover away.
- Connect the cable wires to the terminal board using the same numbering as in the indoor unit.
- For the electrical connections, see the wiring diagram on the back of the cover.
- Fasten the cables with a cable-clamp.
- An efficient earth connection must be ensured.
- Replace the covers.
The diagram shows the wiring diagram on the back of the cover, the outdoor unit, and how to remove the upper cover.
Connecting the pipe
Screw the flare nuts to the outdoor unit coupling with the same tightening procedures described for the indoor unit.
Note: If the tightening torque is not sufficient, there will probably be some leakage. With excessive tightening torque, there will also be some leakage, as the flange could be damaged.
The diagram shows connection pipes, flare nuts, gas tap, liquid tap, gas valve, liquid valve tap, service port nut, and protection caps.
2.8 Vacuum and gas leakage test
1. Use vacuum Pump
- Air and humidity left inside the refrigerant circuit can cause compressor malfunction. After connecting the indoor and outdoor units, bleed the air and humidity from the refrigerant circuit by using a vacuum pump.
- Open the piezometer and operate for 10-15 minutes to check if the pressure of the piezometer remains at -0.1Mpa.
- Close the vacuum pump and maintain this status for 1-2 minutes to check if the pressure of the piezometer remains at -0.1Mpa. If the pressure decreases, there may be leakage.
- Remove the piezometer, open the valve core of the liquid valve and gas valve completely.
- Tighten the screw caps of the valve and refrigerant charging vent.
The diagram shows a service port and a vacuum pump connected to the outdoor unit.
2. Leakage Detection
- With leakage detection: Check if there is leakage with leakage detection.
- With soap water: If a leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3 minutes. If there are air bubbles coming out of this position, there is a leakage.
2.9 Final test
1 Preparation of test operation.
- The client approves the air conditioner installation.
- Specify the important notes for the air conditioner to the client.
2 Method of test operation
- Put through the power, press the ON/OFF button on the remote controller to start operation.
- Press the MODE button to select AUTO, COOL, DRY, FAN, and HEAT to check whether the operation is normal or not.
If the ambient temperature is lower than 16°C, the air conditioner cannot start cooling.
Klimaire Contact Information
Klimaire
Mark of Superior Quality
7999 NW 81 Place - Medley, FL 33166
Tel: (305) 593 - 8358
Website: www.klimaire.com
Email: customerservice@klimaire.com
The Klimaire logo is a registered Trademark of Klimaire Products Inc. Copyright 2024 Klimaire Products Inc.
The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details.
