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Owner's Manual for Midea models including: MD23IU-156A Split Air Source Heat Pump Water Heater, MD23IU-156A, Split Air Source Heat Pump Water Heater, Source Heat Pump Water Heater, Pump Water Heater, Water Heater, Heater
Erp Directive
May 21, 2024 — Read these instructions carefully before installation. Keep this manual in a handy for future reference. Improper installation of equipment or accessories ...
File Info : application/pdf, 33 Pages, 9.07MB
DocumentDocumentINSTALLATION AND OWNER'S MANUAL Split Air-source Heat Pump Water Heater IMPORTANT NOTE: Thank you very much for purchasing our product, Before using your unit , please read this manual carefully and keep it for future reference. If you need to consult the electronic manual, please go to this websitehttps://tsp.midea.com CONTENTS 1 SAFETY PRECAUTIONS 01 2 GENERAL INTRODUCTION 05 2.1 Outdoor unit 05 2.2 Water tank 05 2.3 Specifications 06 3 BEFORE INSTALLATION 07 3.1 Accessories 07 3.2 Space for maintenance 07 4 INSTALLATION PROCEDURE 09 4.1 Dimension sketch and fixed way 09 4.2 Drain hole position 10 4.3 Pipe connection 11 4.4 Vacuum drying 13 4.5 Refrigerant charge 14 5 ELECTRICAL CONNECTION 15 5.1 Power supply cords 15 5.2 Water tank temperature sensor installation 16 5.3 ODU & AUX. power connection 16 5.4 Dial code definitions 17 6 CHECK 18 6.1 Quality inspection of electric auxiliary heater 18 6.2 System parameters check 19 7 OPERATIONS AND PERFORMANCES 20 8 MAINTENANCE 21 8.1 Confirmation before running 21 8.2 Troubleshooting when abnormal situation happens 21 8.3 After-sale service 21 8.4 Important information for the used refrigerant 21 8.5 Water quality limitations 22 9 ERROR CODE SHOOTING TABLE 23 10 SPECIFICATIONS 24 10.1 Technical data manual 24 10.2 Energy efficiency 25 1 SAFETY PRECAUTIONS The precautions listed here are divided into the following types.They are quite important, so be sure to follow them carefully. Meanings of DANGER, WARNING, CAUTION and NOTE symbols. i INFORMATION Read these instructions carefully before installation. Keep this manual in a handy for future reference. Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment. Be sure to only use accessories made by the supplier, which are specifically designed for the equipment and make sure to get installation done by a professional. All the activities described in this manual must be carried out by a licensed technician. Be sure to wear adequate personal protection equipment such as gloves and safety glasses while installing the unit or carrying out maintenance activities. Contact your dealer for any furthur assistance. DANGER Indicates an imminently hazardous situation which if not avoided, will result in death or serious injury. WARNING Indicates a potentially hazardous situation which if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation which if not avoided, may result in minor or moderate injury. It is also used to alert against unsafe practices. NOTE Indicates situations that could only result in accidental equipment or property damage. Explanation of symbols displayed on the unit CAUTION This symbol shows that the operation manual should be read carefully. CAUTION This symbol shows that a service personnel should be handling this equipment with reference to the installation manual. CAUTION This symbol shows that information is available such as the operating manual or installation manual. WARNING For continued safety of this appliance it must be installed, operated and maintained in accordance with the manufacturer's instructions. WARNING This appliance may deliver water at high temperature. Refer to local requirements and installation instructions to determine if additional delivery temperature control is required. 01 DANGER The operation of the thermal cut-out indicates a possibly dangerous situation. Do not reset the thermal cut-out until the water heater has been serviced by a qualified person. Failure to operate the relief valve easing gear at least once every six months may result in the water heater exploding. Continuous leakage of water from the valve may indicate a problem with the water heater. If the hot water system is not used for two weeks or more, a quantity of highly flammable hydrogen gas may accumulate in the water heater. To dissipate this gas safely, it is recommended that a hot tap be turned on for several minutes or until discharge of gas ceases. Use a sink, basin, or bath outlet, but not a dishwasher, clothes washer, or other appliance. During this procedure, there must be no smoking, open flame, or any electrical appliance operating nearby. If hydrogen is discharged through the tap, it will probably make an unusual sound as with air escaping. Before touching electric terminal parts, turn off power switch. Do not touch the inner parts of the controller.Do not remove the front panel. Some parts inside are dangerous to touch, otherwise a machine malfunction may be caused. When front panels are removed, live parts can be easily touched by accident. Never leave the unit unattended during installation or servicing when the front panel is removed. Do not touch water pipes during and immediately after operation as the pipes may be hot and could burn your hands. To avoid injury, give the piping time to return to normal temperature or be sure to wear protective gloves. Do not touch any switch with wet fingers. Touching a switch with wet fingers can cause electrical shock. Before touching electrical parts, turn off all applicable power to the unit. WARNING If the water supply pressure exceeds 0.5MPa, a pressure reducing valve is to be fitted in the installation. The water may drip from the discharge pipe of the pressure-relief device and that this pipe must be left open to the atmosphere. The pressure-relief device is to be operated regularly to remove lime deposits and to verify that it is not blocked. A discharge pipe connected to the pressure-relief device is to be installed in a continuously downward direction and in a frost-free environment. For appliances with supplementary heaters, the minimum clearance from the appliance to combustible surfaces will be 3m. The installation of the appliance shall comform to the local regulation. A creepage breaker must be installed adjacent to the power supply. Do not remove, cover or deface any permanent instructions, labels, or the data labels from either the outside of the unit or inside of unit panels. Required qualified person for relocating, repairing and maintaining the unit instead of doing by yourself. Electric connection work should obey the instructions of local power company, local electric utility and this manual. Never use the wiring and fuse with wrong rated current, otherwise the unit maybe break down and cause fire further more. Do not insert fingers, rods or other objects into the air inlet or outlet.When the fan is rotating at high speed, it will cause injury. Never use a flammable spray such as hair spray, lacquer paint near the unit.It may cause a fire. 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. Tear apart and throw away plastic packaging bags so that children will not play with them.Children playing with plastic bags face danger of death by suffocation. Safely dispose of packing materials such as nails and other metal or wood parts that could cause injuries. Ask your dealer or qualified personnel to perform installation work in accordance with this manual. Do not install the unit yourself. Improper installation could result in water leakage, electric shocks or fire. Be sure to use only specified accessories and parts for installation work. Failure to use specified parts may result in water leakage, electric shocks, fire, or the unit falling from its mount. Install the unit on a foundation that can withstand its weight. Insufficient physical strength may cause the equipment to fall and possible injury. Perform specified installation work with full consideration of strong wind, hurricanes, or earthquakes. Improper installation work may result in accidents due to equipment falling. 02 Make certain that all electrical work is carried out by qualified personnel according to the local laws and regulations and this manual using a separate circuit. Insufficient capacity of the power supply circuit or improper electrical construction may lead to electric shocks or fire. Be sure to install a ground fault circuit interrupter according to local laws and regulations. Failure to install a ground fault circuit interrupter may cause electric shocks and fire. Make sure all wiring is secure. Use the specified wires and ensure that terminal connections or wires are protected from water and other adverse external forces. Incomplete connection or affixing may cause a fire. When wiring the power supply, form the wires so that the front panel can be securely fastened. If the front panel is not in place there could be overheating of the terminals, electric shocks or fire. After completing the installation work, check to make sure that there is no refrigerant leakage. Never directly touch any leaking refrigerant as it could cause severe frostbite.Do not touch the refrigerant pipes during and immediately after operation as the refrigerant pipes may be hot or cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor and other refrigerant cycle parts. Burns or frostbite are possible if you touch the refrigerant pipes. To avoid injury, give the pipes time to return to normal temperature or, if you must touch them,be sure to wear protective gloves. Do not touch the internal parts (pump, backup heater, etc.) during and immediately after operation. Touching the internal parts can cause burns. To avoid injury, give the internal parts time to return to normal temperature or, if you must touch them, be sure to wear protective gloves. Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants. CAUTION The earthing pole of socket must be grounded well, make sure that power supply socket and plug are dry enough and connected tightly. Before cleaning, be sure to stop the unit and turn the breaker off or pull out the power plug. After a long term use, check the unit base and fittings. If damaged, the unit may sink and result in injury. Arrange the drain pipe to ensure smooth draining.Improper drainage work may cause wetting of the building, furniture etc. Do not turn off the power supply. System will stop or restart heating automatically. A continuous power supply for water heating is necessary, except service and maintenance. Ground the unit. Grounding resistance should be according to local laws and regulations. Do not connect the ground wire to gas or water pipes, lightning conductors or telephone ground wires. Incomplete grounding may cause electric shocks. - Gas pipesFire or an explosion might occur if the gas leaks. - Water pipesHard vinyl tubes are not effective grounds. - Lightning conductors or telephone ground wiresElectrical threshold may rise abnormally if struck by a lightning bolt. The installation height of power supply should be over 1.8m, if there is any water spattered, separate the power supply from water. Do not wash the unit. This may cause electric shocks or fire. The appliance must be installed in accordance with national wiring regulations. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. Do not install the unit in the following places: - Where there is mist of mineral oil, oil spray(eg: kitchen) or vapors. Plastic parts may deteriorate, and cause them to come loose or water to leak. - Where corrosive gases (such as sulphurous acid gas) are produced. Where corrosion of copper pipes or soldered parts may cause refrigerant to leak. - Where there is machinery which emits electromagnetic waves. Electromagnetic waves can disturb the control system and cause equipment malfunction. - Where flammable gases may leak, where carbon fiber or ignitable dust is suspended in the air or where volatile flammables such as paint thinner or gasoline are handled. These types of gases might cause a fire. - Where the air contains high levels of salt such as near the ocean. - Where voltage fluctuates a lot, such as in factories. - In vehicles or vessels. - Where acidic or alkaline vapors are present. - Other special environments. 03 This appliance can be used by children 8 years old and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they are supervised or given instruction on using the unit in a safe manner and understand the hazards involved. Children should not play with the unit. Cleaning and user maintenance should not be done by children without supervision. Children should be supervised to ensure that they do not play with the appliance. If the supply cord is damaged, it must be replaced by the manufaturer or its service agent or a similarly qualified person. Concerning disconnection incorporated in the fixed wiring should be in accordance with local regulation. DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste seperatelly for special treatment is necessary. Do not dispose of electrical appliances as municipal waste, use seperate collection facilities. Contact your local goverment for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substance can leak into the groudwater and get into the food chain, damaging your health and well-being. The wiring must be performed by professional technicians in accordance with national wiring regulation and this circuit diagram. An all-pole disconnection device which has at least 3mm seperation distance in all pole and a residualcurrent device(RCD) with the rating not exceeding 30mA shall be incorporated in the fixed wiring according to the national rule. Confirm the safety of the installation area ( walls, floors, etc. ) without hidden dangers such as water, electricity, and gas. Before installation, check whether the user's power supply meets the electrical installation requirements of unit ( including reliable grounding, leakage, and wire diameter electrical load, etc. ). If the electrical installation requirements of the product are not met, the installation of the product is prohibited until the product is rectified. When installing multiple air conditioners in a centralized manner, please confirm the load balance of the three-phase power supply, and multiple units are prevented from being assembled into the same phase of the three-phase power supply. Product installation should be fixed firmly. Take reinforcement measures, when necessary. NOTE The appliance is intended to be permanently connected to the water mains and not connected by a hose-set. When using the off-peak function, the product can only work under the off-peak power supply all the time. About Fluorinated Gasses This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas and the amount, please refer to the relevant label on the unit itself. Compliance with national gas regulations shall be observed. - Installation, service, maintenance and repair of this unit must be performed by a certified technician. - Product uninstallation and recycling must be performed by a certified technician. - If the system has a leak-detection system installed, it must be checked for leaks at least every 12 months. When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended. Generally, the ambient air temperature of the unit must be above -15°C and below 46°C. Install safety valve to water inlet, the largest torque of safety valve shouldn't be more than 50N.m. Please make sure water tank is upright put. Install in the place that can prevent unit toppling and falling(e.g. balcony or corner) . If install the unit in an open space, to avoid being blown down by strong wind (especailly in the are with strong wind), please fix water tank according to operation manual. All the diagrams in this manual is for reference only, its appearance and function may different from water heater that you bought, actual model shall prevail. 04 2 GENERAL INTRODUCTION 2.1 Outdoor unit 5 5 Table 2-1 No. Name Power cord enter Refrigerant gas valve Refrigerant liquid valve Air outlet 5 Air inlet 1 4 2.2 Water tank 1 2 5 4 6 UP 7 10 8 9 11 200L Without Aux.* * Electric auxiliary heater is shortened to Aux. 2 3 Fig. 2-1 UP 300L With Aux.* 3 1 2 5 4 No. Name Table 2-2 12 1 Magnesium rod insertion port 2 Foam filling port 3 Reserved port 4 Water outlet 5 Temperature pressure safety valve 6 Water tank temperature sensor 7 Handle 6 8 Refrigerant gas pipe 9 Re5frigerant liquid pipe 10 Water inlet 7 11 Drain outlet 12 Electric auxiliary heater 8 9 12 10 11 Fig. 2-2 05 2.3 Specifications Table 2-3 Outdoor unit model Indoor unit model MHW-F20WN3 MT-200R20 MT-200R20E20 MT-300R20 MT-300R20E20 Ambient temperature -15~46 Leaving water temperature 20~65 20~70 20~65 20~70 Heating Capacity2 Rated Input General Hot water yield W W m3/h 1800 1000 0.03871/ 0.05162 Liquid side Refrigerant Gas side piping Max. height difference mm/inch mm/inch m 6.35 / 1/4' 9.52 / 3/8' 10 Max. refrigerant pipe length m 20 Design pressure MPa 3 Outdoor unit power supply V/N/Hz 220-240/1/50 Max. current A 4.4 13.5 4.4 13.5 Compressor Type Type Rotary Fan Type AC Air side heat exchanger Type Hydraulic aluminum fin + Inner grooved copper tube Throttle Outdoor Outdoor sound power level unit Unit dimension(L*W*H) Type dB mm Electric expansion valve 65 804*327*555 Diemension Packing dimension(L*W*H) mm Net weight kg 845*390*630 29 Gross weight kg 32 Refrigerant Type Charged volume g R134a 900 Tank volume L 190 190 288 288 Water Tank Electric Capacity heater Power supply kW V/N/Hz Unit dimension(W*D*H) mm Diemension Packing dimension(W*D*H) mm Net weight kg Gross weight kg / 2.1 220-240/1/50 220-240/1/50 505*505*1665 1775*635*590 73 74 83 84 / 2.1 220-240/1/50 220-240/1/50 580*580*1735 1835*690*670 96 97 108 109 Notes: 1. Ambient temperature 7/6(DB/WB), Initial water temperature 15, Terminative water temp. 55. 2. Ambient temperature 7/6(DB/WB), Initial water temperature 15, Terminative water temp. 45. Unit: Table 2-4 Ambient Leaving water temperature temperature -15~-10 50 65 55 -10~43 65 50 43~46 55 Fig. 2-3 Leaving water temperature 20 -15 -10 Ambient temperature 43 46 06 3 BEFORE INSTALLATION 3.1 Accessories Accessory Name Qty. Shape Purpose Table 3-1 Installation manual 1 Manual of wired controller 1 Need by master unit Wired controller instructions Wired controller components 1 Control unit and display unit status Water drainage connection 1 Outdoor unit Water drainage pipe 1 Plastic expansion tube 4 Screw 4 Fixing box of HMI 1 Wiring for HMI 1 Seal ring 1 Water tank fixing strip 1 PTR valve 1 Connector 2 Water tank Seal ring 2 Copper nut 2 Safety valve 1 Water drainage pipe for water tank(with hose clamp) 1 For condensate water draining Condensate water drainage of unit bottom plate To fix mounting box To fix mounting box Install the wired controller Connect the unit and HMI Seal between water drainage connection and external machine Fixed water tank Pressure relief Connect water tank and safe care Prevent rust between water tank and joint Refrigerant connection pipe nut of water tank Prevents backflow of water Drain water from tank when necessary 3.2 Space for maintenance NOTE During installing, it is necessary to reserve enough installation space and maintenance space according to the following figures. 3.2.1 Outdoor unit installation and maintenance space, see Fig 3-1 and Fig 3-2 . (Unit: mm) 200mm 500mm 600mm 200mm 300mm 600mm Fig 3-1 Air outlet 1500mm Fig 3-2 07 3.2.2 Water tank installation and maintenance space, see Fig 3-3 ~ Fig 3-6 . (Unit: mm) NOTE If the water tank is completely installed outdoors, it is strongly recommended to install a rain shelter. When the water tank is installed outdoors, the distance between the water tank and the fence is not less than 200mm. When the water tank is installed indoors, the distance between the water tank and the wall is not less than 600mm. For the water tank with electric auxiliary heaterthe electric auxiliary heater shall be at least 1000mm away from the wall to ensure that there is enough space for electric auxiliary heat maintenance. Rainshed 600mm Rain Without Aux.* 600mm 600mm 200mm * Electric auxiliary heater is shortened to Aux. Rainshed 600mm 600mm Fig 3-3 Rain Fig 3-4 With Aux.* 600mm UP 1000mm 200mm * Electric auxiliary heater is shortened to Aux. 1000mm Fig 3-5 The Aux* is replaceable material,need to make sure there is enough space for e-heater maintenance. Fig 3-6 08 4 INSTALLATION PROCEDURE NOTE Ask your dealer or specialized person for moving, repair, and maintenance. Install it in the place without direct sunlight and other direct heat radiations. If it can't be avoided, please add a cover to prevent unit from direct sunlight. The ceiling is horizontal, and its structure can endure the weight of the indoor unit. Please firmly install the unit, otherwise it may cause abnormal noise and vibration. Remove obstacles nearby, a narrow circulation space may influence performance of the unit. Install in the place that closes to water tank as far as possible, under the condition that the installation requirements could be satisfied. When installing in the place that near to the sea and high place where strong wind blows, install the unit against a wall or use a baffle when necessary to ensure the unit could run normally, see Fig 4-1. Especially in the place with strong wind, pay attention not to let strong wind blow back to the unit. If install the unit in a basement, inside the room or other confined space, please pay attention to air discharge and air supply circulation around the unit and outside. Circulation air volume should not less than 1500m3/h. Strong wind 4.1 Dimension sketch and fixed way 4.1.1 Outdoor unit, see Fig. 4-2, Fig. 4-3 and Table 4-1(Unit: mm) × Fig. 4-1 A D E B C Table 4-1 Dimension and mounting dimension A B C D E 804 555302452137 Fig. 4-2 Please fix the four bases of the outdoor unit on the flat ground with bolts. Fig. 4-3 09 4.1.2 Water tank, see Fig. 4-4, Fig. 4-5 and Table 4-2(Unit: mm) Table 4-2 Dimension A H Model 200L 505 1665 300L 580 1735 H A 4.2 Drain hole position Water outlet connection pipe/ seal ring Please install the water tank fixing strip as shown in the figure to ensure that the water tank is stably fixed. Fig. 4-4 Fig. 4-5 Please use the Allen wrench to open the drain valve to drain the water. If no water flows out, it means that the draining is completed. Fig 4-6 10 Drain outlet Fig 4-7 4.3 Pipe connection 4.3.1 Unit connection sketch Unit connection sketch, please refer to Fig.4-8. Gutters Hot water outlet UP Outdoor unit Icons and meanings Name Water end user Water tank Gutters Cold water inlet Fig. 4-8 Table 4-3 stop valve Water mixing valve (bought by customers themselves) (bought by customers themselves) Icon Name Safety valve (must be installed) Expansion tank (suggest to install) Y-shape filter (40 meshes) (bought by customers themselves) Icon Name Icon Gutter NOTE The water tank temperature can be set from 20 ¥to 65¥(or 70¥). The minimum water inlet pressure is not less than 0.15MPa, and the maximum is not more than 0.5MPa. If the inlet water pressure is less than 0.15MPa, a pump should be installed at the water inlet. To guarantee the safety usage of tank, a reducing valve should be installed in the water inlet pipe, if the water pressure exceeds 0.5MPa. It is strongly recommended to use thread seal tape for sealing when connecting water pipes and valves. 11 4.3.2 PTR valve The valve body unloading pressure is 850kPa, unloading temperature is 99¥. PT valve is tightened with a 68N.m torque wrench. Apply sealant to the first 3 turns of screw thread before installation; After installation, the outlet of the drain pipe shall be installed face down, and the thread turns that are not screwed into the PT valve shall be less than 3 turns. Before filling the water tankthe PTR valve must be installed properly. The PTR valve should be checked every half year to make sure that there is no restriction of the valve. Please beware of hot water from the valve. The drainage pipe should be well insulated in order to prevent water inside pipe from freezing in cold weather. Handle Drainage pipe 4.3.3 Stop valve instruction In general, the shape of stop valve and names of each part are shown in Fig.4-10. Effect of stop valve: - Stop the system when the unit is working. - When water tank connects with the outdoor unit, vacuumize and add refrigerant through it. - Stop the system and then recycle refrigerant to outdoor unit when maintaining. Open and close the stop valve: - Open: dismantle the bonnet by wrench and insert an *Allen key to spool, open the stop block anticlockwise and then tighten the bonnet. - Close: use a wrench to dismantle the bonnet and insert an Allen key to spool, close the stop block clockwise and then tighten the bonnet. Fig.4-9 *Allen key Spool Valve spool Bonnet Connection nut Ball-shape cushion Connection pipe Fig.4-10 CAUTION Before water heater runs, please make sure every stop valve has been opened. 4.3.4 Connection length of outdoor unit and water tank pipe and height difference requirements: Table 4-4 Max.length (m) 20 Max. height difference (m) 10 Standard length (m) 3 Standard height difference (m) 0 12 NOTE Do not let air, dust, or other impurities fall in the pipe system during installation. The connecting pipe should not be installed until the indoor and outdoor units have been fixed already. Keep the connecting pipe dry, and do not let moisture in during installation. When connecting copper pipe, please wrap it with thermal insulation material. 4.4 Vacuum Drying 4.4.1 Purpose Vacuum drying should be performed in order to remove moisture and non-condensable gases from the system. Removing moisture prevents ice formation and oxidization of copper piping or other internal components. The presence of ice particles in the system would cause abnormal operation, whilst particles of oxidized copper can cause compressor damage. The presence of non-condensable gases in the system would lead to pressure fluctuations and poor heat exchange performance. 4.4.2 Procedure Pressure gauge Vacuum pump Outdoor unit 1 2 Service port 1 Gas pipe stop valve 2 Liquid pipe stop valve Fig.4-11 13 Item Description Connect the (low pressure side) 1 hose of a pressure gauge to the outdoor unit gas pipe stop valve. 2 Connect the hose to the vacuum pump. 3 Connect the outdoor unit gas pipe stop valve to water tank gas pipe Image Notice Table 4-5 Before performing vacuum drying, make sure that all the outdoor unit stop valves are firmly closed. 1. Mixing of pump lubricant with compressor oil could cause compressor malfunction and a one-way valve should therefore be used to prevent vacuum pump lubricant seeping into the piping system. 2. Using a vacuum pump with a discharge in excess of 4L/s and a precision level of 0.02mmHg is recommended. 4 Connect the outdoor unit liquid pipe stop valve to water tank liquid pipe Start the vacuum pump and then open 5 the pressure gauge valves to start vacuum the system. 6 After 15-20 minutes, close the pressure gauge valves. After a further 5 to 10 minutes check the pressure gauge. If the gauge has 7 returned to zero, check for leakages in the refrigerant piping. If the gauge is no change, then vaccum drying is OK. Re-open the pressure gauge valves and continue vacuum drying for at least 20 minutes and until a pressure 8 difference of 756mmHg or more has been achieved. Once the pressure difference of at least 756mmHg has been achieved, continue vacuum drying for 20 minutes. 9 Close the pressure gauge valves and then stop the vacuum pump. After 1 hour, check the pressure gauge. If the pressure in the piping 10 has not increased, the procedure is finished. If the pressure has increased, check for leakages. After vacuum drying, keep the hoses connected to the pressure gauge and to the outdoor unit stop valves, in preparation for refrigerant charging. 4.5 Refrigerant charge Pipe length is 2~20m. If the pipe length is less than 10m, there is no need to add additional refrigerant charge. If the pipe length is more than 10m, adding additional refrigerant charge is necessary, and the rule is 20g/m for the additional pipe. 14 5 ELECTRICAL CONNECTION CAUTION The heat pump should use separate power supply with rated voltage. If voltage is not stable, please use stabilized voltage supply. The external power supply to the heat pump should have ground wiring, which is linked to the ground wiring of the indoor andoutdoor unit. The wiring work should be done by qualified persons according to circuit drawing. A leakage protector should be installed according to the National Standard concerning electrical appliance. An all-pole disconnection device which has at least 3mm separation distance in contact points should be installed. Power supply cords and signal wires should be arranged properly. Separate strong current wire and weak current wire, meanwhile they can't contant with connection pipe and valve. Power supply with a leakage protector should be installed in a water-proof place inside the room. Don't do cross connection between 2 wires and signal wires must be shielded. When power supply cord parallels with controlling wire, please put the wires to corresponding wire pipe and leave proper spac between wires. When selecting power supply cords, please refer to to the National Standard and this manual, power supply used outdoor should not lighter than NO.57 wire in IEC 60245. If power supply cord is damaged, to avoid danger, it must be replaced by professional person. Do not turn on the power until you have checked carefully after wiring. This appliance can be connected only to a supply with system impedance no more than 0.530. In case necessary,please consult your supply authority for system impedance information. 5.1 Power supply cords 5.1.1 Specification of power supply Item Model Power Min. wire dia.(mm2) Manual switch(A) (mental pipesynthetic resin pipe wire) Succesive Ground wire length 30m Capacity Fuse With AUX. 220-240V~ 50Hz Without AUX. 1.5 to 4 1.0 to 2.5 1.5 to 4 1.0 to 2.5 20 15 Leakage protector 30mA below 0.1 sec Table 5-1 Max. E-heater Power(W) 2100 NOTE Specifications of power wires above (outdoor unit power wire and power wire that connets with water tank)H07RN-F. Power supply provided individually(not use power supply device). CAUTION Wire diameter shown in the table above and succesive length is the situation than voltage drop is in the range of 2%, when succesive length is longer than the value shown in the table, please select wire diameter according to relative standards. 15 5.2 Water tank temperature sensor installation Connect the water tank temperature sensor wire connector to the outdoor unit T5L connector. Water tank temperature sensor T5L T5L PCB Fig.5-1 5.3 ODU & AUX. power connection NOTE If the water tank has the electric auxiliary heating AUX. function, please follow the steps below to connect the electric auxiliary heating power cord. 1.Remove the protective cover of the electric control box on the right side of the outdoor unit. Fig.5-2 2. Connect the electric auxiliary heating power line on the water tank to the corresponding port on the terminal block. Terminal block Fig.5-3 16 3.Outdoor unit power supply. 1 2 1 0 o o o oo ooo Terminal block 3 4 L GND 16A N Power supply E-heater 1. Electric counter 2. Global overcurrent and leakage circuit breaker 3. Electric leakage circuit breaker 4. Overcurrent circuit breaker Fig.5-4 CAUTION A leakage protector must be installed on power supply box outside the unit according to the figure above. Power supply with leakage protector must be installed inside or installed in the place that can satisfy water-proof requirements. This unit can be started only if it is grounded reliably. 5.4 Dial code definitions NOTE The picture shown is for reference only, actual product may vary. means 0, means 1. S1-1 S1-2 S1-3 S2-1 S2-2 S2-3 1 1 2 3 0 1 1 2 3 0 1 1 2 3 0 1 1 2 3 0 1 1 2 3 0 1 1 2 3 0 Default Table 5-2 Reserve Reserve Default Reserve Reserve Reserve Reserve The default validity period of user set parameters is 24 hours. The default validity period of user set parameters is long-term. Reserve Default 17 6 CHECK NOTE Before switching on the unit, read following recommendations: When the installation and parameter setting are completed, cover all the sheet metal of the unit well. The unit should be maintained by professionals. For the water tank with electric auxiliary heater, please check the quality of the electric auxiliary heater according to the method in Chapter 6.1 before the Long-term operation to avoid damage to the unit or personal injury. 6.1 Quality inspection of electric auxiliary heater Table 6-1 No. Description Image Notice After the unit is powered on, press the power 1 button on the wired controller and the screen will flash briefly. The unit shall be installed according to the requirements of the corresponding specifications. Before the unit is powered on, please ensure that the system operates in the environment where the water tank is full of water to prevent damage to the electric auxiliary heat pipe. 2 Press and hold the "" button until the manual electric auxiliary heater function icon " " appears. If the wired controller screen is locked and displays the icon " ", press and hold the "" and "" buttons simultaneously for several seconds. When the " " icon disappears, it indicates that the wired controller screen is successfully unlocked. Press the "" button again, and the icon " " 3 will appear, indicating that the manual electric auxiliary heater function has been turned on. Press the "" button to switch the manual electric auxiliary heater function between ON and OFF. Press the "" button to return to the main interface. If the manual electric auxiliary heater function icon and the electric auxiliary heater operation status icon are displayed on 4 the screen of the wired controller, it means that the manual electric auxiliary heater function has been turned on, and the electric auxiliary heater is in operation status. If not, please check whether steps 1 to 4 are correct. After the manual electric auxiliary heater function is turned on, wait for 5min to make the electric auxiliary heating operate stably in 5 the environment with water, check whether the leakage protection switch trips. If there is a trip, immediately cut off the power and notify the professional maintenance personnel. If no tripping occurs, please turn off the manual electric auxiliary heater function after 6 unlocking the wired controller screen. Then press and hold the "" button to enter the electric auxiliary heater function interface. In this case, it is usually need to replace the electric heating pipe. After entering the electric auxiliary heater function interface, press the "" button again 7 to cancel the manual electric auxiliary heater function, and the icon display will change from " " to " "b Press the "" button to return to the main interface, and you can find that the manual electric auxiliary heater function icon and the 8 electric auxiliary heater operation status icon are disappeared, indicating that the manual electric auxiliary heater function has been closed. 18 6.2 System parameters check If the whole unit failed or in protection, the panel will display the corresponding code; when more than one failure or protection *Press check occurs, the order of failure protection will display. When checking, the number is displayed first, then the content. *Press check SW1 button, you can go over parameters of the whole unit, the following table shows sequence of check: No. Display content 0 Normal display Instructions Table 6-2 "dF"----Defrosting "dC"----Refrigerant recovering "0"----When being shut down "__" Temperature of water tank---- When operating or standby 1 Running mode "3"----Water heating 2 Running air speed 3 T3 temp. value "F0" ----Shut down fan "F1" ----Low speed "F3"---- High speed 4 T4 temp. value 5 T5L temp. value 6 Th temp. value 7 Tp temp. value 8 Current 9 EEV opening degree Actual opening=display value×8 10 T5s setting temperature 11 Td setting auto start temp of auxiliary E-heater 12 Trdh setting booting return difference temp. 13 The third to last error 14 Penultimate error 15 The last error 16 Software version Actual version 17 Check finished Display"- -" 19 7 OPERATIONS AND PERFORMANCES CAUTION Please cut off the manual switch power when unit fails. Do not restart until problems are solved. 1) Characteristics of water heating----3 minute protection Restart or open manual switch after the unit has been shut down within a short time. Unit will not start immediately until 3 minutes later, because of the self-protect function of the compressor. 2During operation, if outdoor temperature is higher than normal, the fan motor will runs at low air volume or stop running. 3About defrosting function perform at heating operation - In case of frosting during heating operation, to prevent the heating efficiency from decreasing, defrosting operation will turn on automatically (Approx. 2~7 minutes) . - In the process of defrosting operation, the unit fan motor will stop running. 4About protection device - When protection device operate, though the unit stops, the operating indicator of wire control still will be blinking. - When protection device operates, nixie indicator will display malfunction code (unit). - Protection device will act when the following circumstances occur: a) Air inlet or outlet are blocked. b) Voltage is a little higher or lower compare to the voltage range (Exceeding the range of -10%~10 of 230V ) 5) Start the unit after a long period out of service Start-up the unit after out of service for a long period (includes drive up a unit at the first time), you would see rust mix up water in red, flow out from tap. Such that is a normal phenomenon, please be calmly and keep draining, after for a while rust will disappear. 6 About power failure - In case power failure during the unit working, please stop all operating actions. - At the next startup after power failure, the RUN indicator of wire controller will blink slowly for several seconds for noting user. - Misoperation occur during unit working. 7 About RCCB Outdoor unit must use RCCB,pleases install an RCCB between in user power supply and the outdoor unit. In case the unit cannot act but not attribute to power failure, please check these RCCB switches at first. Before operate the RCCB, please ensure that the user installing switch is break off. 20 8 MAINTENANCE 8.1 Confirmation before running 1) Make sure whether ground wire is broken or fall off. 2) Power on the machine after all connections are qualified. 8.2 Troubleshooting when abnormal situation happens Before asking for serving or repairing, check the following points: Non-mechanical malfunction 1) Water oozes from safety valve pressure relief opening - When water heating, cold water will expand when heated, water oozing is normal. Do not block it for safety consideration. - If a large amount of water flows, it means safety valve is invalid.Stop using and replace safety valve. 2) Long period for heating a tank of water - In winter, water heating efficiency will decrease because of low ambient temperature(about 0¥).It will take a longer time for water heating. - If customer needs to use hot water, please start the unti in advance. Need to check 1) Automatically start or stop - Whether we set timer wrongly. 2) When not working - Check whether powering on. - Whether manual switch is on. - Whether fuse blows. - Whether start the protection device(indicator lights). - Whether it is not the time of timer on.(Operation lamp lights.) 3) If heating effect is not good - Whether air outlet and inlet has been blocked. CAUTION If the following situation happens, please stop running and cut off power supply manually and contact with the dealer or service center. - ON/OFF operation is ineffective. - Fuse or RCCB trips frequently Before leave unused for a long time, please complete the following items: - Drain water from tank and pipes, close all valve bodies. After leave unused for a long time, please check the following items: - Check air inlet and outlet of the unit to see whether they are blocked. Clean immediately when they are blocked. - Check whether water pipes, valves have been damages or blocked. Whether there's water leakage in joints, replace them when water leaks. - It is suggest to inspect anode protection material every half year. If it has been exhausted, please replace it with a new one. 8.3 After-sale service In case of malfunctions, please cut off the power switch and contact after-sale service centre or technical service department, for detailed information please refer to User Service Guide. 8.4 Important information for the used refrigerant This product has the fluorinated gas, it is forbidden to release to air. Refrigerant type: R134a; Volume of GWP: 1430; GWP=Global Warming Potential Table 8-1 Factory charge Refrigerant/kg 0.9 tonnes CO2 equivalent 1.29 21 NOTE Frequency of Refrigerant Leak Checks: 1) For equipment that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2 equivalent or more,but of less than 50 tonnes of CO2 equipment,at least every 12 months, or where a leakage detection system is installed, at least every 24 months. 2) For equipment that contains fluorinated greenhouse gases in quantities of 50 tonnes of CO2 equivalent or more,but of less than 500 tonnes of CO2 equipment,at least every six months, or where a leakage detection system is installed, at least every 12 months. 3) For equipment that contains fluorinated greenhouse gases in quantities of 500 tonnes of CO2 equivalent or more,at least every three months, or where a leakage detection system is installed,at least every six months. 4) Non-hermetically sealed equipment charged with fluorinated greenhouse gases shall only be sold to the end user where evidence is provide that the installation is to be carried out by an undertaking certified person. 5) Only certificated person is allowed to do installation, operation and maintenance. 8.5 Water quality limitations NOTE If the water quality does not meet the requirements in the table below, please contact the supplier for advice. PH Value 6.5-8.0 Total Hardness 50ppm Table 8-2 Electrical Conductivity <200S/cm(25¥) Sulphate Ion Silicon Iron Content <50ppm Sulfide Ion None <30ppm Chloride Ion <50ppm <0.3ppm Ammonia Ion None Sodium Ion None Calcium Ion <50ppm 22 9 ERROR CODE SHOOTING TABLE Error Code E2 E4 E5 E6 E9 EA EF HP HC P1 P2 P4 PA bA F2 F6 db Explanation Communication error Water tank temperature sensor error (T5L) ODU heat exchanger temperature sensor error (T3) ODU ambient temperature sensor error (T4) Suction temperature sensor error (Th) Discharge temperature sensor error (Tp) Clock chip error Smart Grid signal error E-heater error (Current is less than 2A when e-heater operating) High pressure protection Over load protection of fixed compressor High discharge temperature (Tp) protection Low water temperature protection The ambient temperature exceeds the declared range (not an error) Low super-heat of discharge protection Electic expansion valve joint fault Anti-freezing operating (not an error) for some unit Table 9-1 23 24 10 SPECIFICATIONS 10.1 Technical data manual Outdoor Heat pump water heater Indoor Water tank Indoor unit sound power(*) dB Outdoor unit sound power(*) dB Storage volume (V) L Standing loss (S) W Declared load profile - Energy efficiency class - Average climate Water heating energy efficiency (wh) Annual electricity consumption (AEC) % kWh Colder climate Water heating energy efficiency (wh) Annual electricity consumption (AEC) % kWh Warmer climate Water heating energy efficiency (wh) Annual electricity consumption (AEC) % kWh Off-peak operation function integrated in heat pump Y/N Ecodesign technical data Air-to-water heat pump Y/N Water-to-water heat pump Y/N Product Brine-to-water heat pump Y/N description Low-temperature heat pump Y/N Equipped with a supplementary heater Y/N Heat pump combination heater Y/N Air-to-water unit Rated airflow (outdoor) Brine/water-to- water Rated brine/water flow (outdoor H/E) heat pump m³/h m³/h MHW-F20WN3 - MT-200R20 65 190 L A+ 149 684 104 982 177 577 N Y N N N N Y 1500 - MHW-F20WN3 - MT-300R20 65 288 XL A+ 159 1049 107 1560 189 885 N Y N N N N Y 1500 - MHW-F20WN3 - MT-200R20E20 65 190 L A+ 149 684 104 982 177 577 N Y N N N Y Y 1500 - MHW-F20WN3 - MT-300R20E20 65 288 XL A+ 159 1049 107 1560 189 885 N Y N N N Y Y 1500 - 10.2 Energy efficiency 25 MHW-F20WN3 MT-200R20 MHW-F20WN3 MT-300R20 L XL + + + + E F 65 982 684 577 kWh/annum 0 0 0 GJ/annum E F 65 1560 1049 885 kWh/annum 0 0 0 GJ/annum 2017 2017 MHW-F20WN3 MT-200R20E20 MHW-F20WN3 MT-300R20E20 L XL + + + + 26 E F 65 982 684 577 kWh/annum 0 0 0 GJ/annum E F 65 1560 1049 885 kWh/annum 0 0 0 GJ/annum 2017 2017 NOTE Different languages 16125300004099 V.A 80g 210*297() P25P26