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Air Source Heat Pump Water Heater 

21 

9 Wiring 

9.1 Wire Layout 

(1) 

This air source water heater is class I appliance. Ensure that wire 

layout is performed by professional personnel according to national wiring rules. 

(2) 

Ensure  that  a  switch  for  all-pole  disconnection  is  available  for  the 

fixed  lines  and  is  directly  connected  to  wiring  terminals  of  the  power  supply. 

Ensure  that  contactor  opening  distance  on  all  poles  meets  the  disconnection 

requirements under overvoltage category III conditions.

 

(3) 

Ensure that reliable grounding measures are taken. A dedicated 

grounding apparatus should be used. 

(4) 

Use the power supply with specifications provided in the nameplate, 

and use circuits dedicated for air conditioners. 

(5) 

Copper-conductor cables must be adopted for power cables, and the 

operating temperature should not greater than the stipulated value. The 

diameter of the cables should be large enough. For details, refer to Table 9-1. If 

the length of the power cable is greater than 15 meters, choose a power 

cable with a larger cross-sectional area to prevent problems caused 

overloading. Do not pull the power cable during the installation. 

(6) 

Use independent fixed socket for the supply. The structure of the 

socket must match the power plug of the water heater and be in line with 

relevant national standards. The socket should be placed in the safe position 

that is out of the reach of water and does not cause electric shock hazards. It 

must not be placed in the bathroom, kitchen, balcony, and other wet places. 

(7) 

Do not use the socket converter, extension cords, or wiring boards to 

adapt to the size of the plug of the water heater, and do not use another plug to 

for the socket. The water heater should use independent wires, and do not 

share a line with other appliances. 

(8) 

If the installation conditions on site change, consider using 

cables whose reduced capacity can still meet site requirements, based on the 

specifications of the power cables and air circuit breakers provided by the 

vendor. 

(9) 

If the power flexible wire is damaged, it must be replaced by 

professional personnel of the vendor, maintenance center of the vendor, or 

Summary of Contents for CH-HP3.0SWHK

Page 1: ...ain it for future reference If you have lost the Owner s Manual please contact the local agent or visit www cooperandhunter com or send email to info cooperandhunter com or electronic version C H reserves the right to interpret this manual which will be subject to any change due to product improvement without further notice Air Source Heat Pump Water Heater ...

Page 2: ...ch will be subject to any change without prior notice The air source heat pump water heater is thermal storage water heater When using water please open the cold water valve first and then adjust the cold and hot water volumes to a proper temperature to prevent scald When you do not use the heater for a short period in cold seasons ensure that this unit is energized all day long When you do not us...

Page 3: ...stallation Diagram 11 6 Installation of the Water Tank 13 7 Pipeline Connection 14 7 1 Refrigerant Pipe Connection 14 7 2 Exhaust Methods 15 7 3 Water Pipe Connection 17 8 Installation Diagram of the Unit 19 9 Wiring 21 9 1 Wire Layout 21 9 2 Wire Connections 22 10 Wired Controller Installation 24 10 1 Requirements for Wired Controller Installation Locations 24 10 2 Wired Controller Installation 2...

Page 4: ...33 16 Servicing and Maintenance 34 16 1 Water Replenishment for the Water Tank 34 16 2 Regular Cleaning for the Water Tank 34 16 3 Mg Stick Replacement 35 16 4 Safety Check Valve Maintenance 36 16 5 Maintenance of the Unit 36 17 Precautions for Safety Use 37 18 Troubleshooting 38 ...

Page 5: ...power cord or socket is suitable for input power of this unit Dedicated lines must be used for the power supply to prevent a fire Do not use multipurpose sockets or mobile wiring boards to connect wires Otherwise overheating or even a fire may be caused Pull out the power plug and drain the main unit and water tank when water heater is not in use for a long time to prevent cracking caused by cold ...

Page 6: ...ect on it Otherwise the main unit or water tank may be deformed or damaged or even hazards may be posed when a person or object falls off To save energy more efficiently install the main unit at a well ventilated place Do not block the air inlet or outlet of the main unit Otherwise energy efficiency may be reduced and shutdown or even a fire may be caused Keep chemical sprays gas tanks at least 1 ...

Page 7: ...ety check valve must be correct that is the direction indicated by the arrow on the safety check valve must be the same as the flow direction of cold water You are advised to install the filter horizontally after the main shutoff valve of the user s water pipe Ensure that the direction indicated by the arrow on the filter must be the same as the water flow If impurities inside the waterway need to...

Page 8: ...lly the appearance of the product may not be exactly the same as that shown in the figure For the actual appearance refer to the product delivered Outdoor unit Wired controller Water tank Figure 2 1 Appearance of the main parts This installation guide provides guidance on installation of the following model Table 2 1 Mapping between the main unit and the water tank Outdoor unit model Water tank mo...

Page 9: ...r W 1180 1500W Electric Heater Outlet Water Temperature C C Default 55 C 35 70 C Power Supply 220V 240V 50Hz Insulation Level I Protection of Ingression IPX4 Refrigerant Name R134a Charge kg 1 20 Outline Dimensions W x D x H mm 848 320 540 Package Dimensions W x D x H mm 881 363 595 Gross Net Weight kg See the nameplate Sound Power Level 3 dB A 61 Operating Range C 15 45 C Notes 1 Value obtained w...

Page 10: ... change Table 2 3 Water Tank Model and Specification Model WT200SW1 5EHK Capacity L 185 Power Supply for Electric Heater 220V 240V 50Hz Input Power for Electric Heater W 1500 Outline Dimensions W x D x H mm 545 x 545 x 1919 Package Dimensions W x D x H mm 2009 x 656 x 625 Water Tank Gross Net Weight kg See the nameplate Outer Size of Connection Pipe mm Φ6 Φ9 52 Notes Please always see the nameplat...

Page 11: ...s heat from the low grade energy air source environment and transfers the heat to a condenser through a compressor and releases it to the water inside the water tank In this way the water is heated up The working principles of an air source water heater are the same as those of a heat pump air conditioner A heat pump air conditioner absorbs heat from the natural environment and transfers it to the...

Page 12: ... can withstand high temperature and high pressure The water tank adopts a stainless steel inner container made based advanced technologies and is equipped with a long lifespan Mg Stick to prevent corruption The entire unit has multi level protection to ensure durable and reliable use Environment Friendly and Safe The unit uses the environment friendly R134a refrigerant which has no atmospheric pol...

Page 13: ...urn function water return system required which allows users to always use hot water as long as the water tank has hot water in the case of multi point water use or a long water pipe This avoids a waste of cold water High Water Temperature The heat pump can heat up water to a maximum temperature of 70 C The high temperature hot water is more hygienic and can be used for various users for various p...

Page 14: ... by the air source water heater meets the local drinking water health standards If well water groundwater and seawater are used the depletion of the Mg Stick in the water tank may be accelerated thereby shortening the lifespan of the unit 5 The water processed by the ion exchange water softener accelerates the depletion of the Mg Stick in the water tank Therefore you are advised not to connect the...

Page 15: ...does not hinder public aisle or affect city appearance 5 2 Space Requirement for Main Unit Installation and Installation Diagram 1 The installation requirements of the water heater s main unit are the same as those of the outdoor unit of an air conditioner The main unit can be installed in the exterior walls roof balcony or ground The air outlet should avoid the wind direction The dimension diagra...

Page 16: ...fitting Then connect the drainage pipe to the drainage mouth and guide the drainage pipe to a proper place for drain Figure 5 1 Dimension diagram of the main unit structure Distance from obstructions 50 cm Distance from the wall Air outlet side Air inlet side Distance from the wall 50 cm 3 0 c m 30 cm 200 cm Outdoor unit chassis Outdoor unit drainage joint Figure 5 2 Space requirements for install...

Page 17: ...nsulation measures on hot water piping to reduce heat loss 2 The water tank must be placed upright with all feet touching the ground It must be installed on a solid foundation During water tank installation consider the weight bearing capability of the foundation Figure 6 1 shows the installation diagram Figure 6 1 Fastening of the water tank Note The water tank must also be fastened to the wall u...

Page 18: ... through the hole 3 Remove the refrigerant pipe joint from the water tank and the sealing nuts from the small and large valves of the outdoor unit and add refrigerant oil on the joint and valve cones 4 Remove the sealing caps of the connecting pipe Align the center of the bell mouth with the pipe joint and valve cone and screw up the conical nut with your hand and then with a wrench as shown in Fi...

Page 19: ...l insulation measures on the connecting pipe when it needs to be extended 1 Use a refrigerant in the outdoor unit Remove the valve cap and the fluoride injection mouth nut from the fluid valve and the air valve Use a hex key to slightly unscrew the valve plug of the fluid valve and use a screwdriver to jack up the valve core of the air valve Then the air is discharging Discharge the air for about ...

Page 20: ...tightly closed Connect the joint of the filling hose to the vacuum pump as shown in Fig 7 4 Fully open the low pressure valve of the pressure gauge Start the vacuum pump to vacuumize the air for 20 minutes or more and ensure that the pressure gauge pointer points to 1 0 x 105 Pa 76cmHg Close the low pressure valve and stop running the vacuum pump Wait 2 minutes If the number indicated by the press...

Page 21: ...m At least a cut off valve must be installed for the water outlet pipe In order to facilitate water tank emptying or cleaning you are advised to add a tee joint and a cut off valve at the water outlet of the water tank They must be installed if the water tank is far away the hot water pipe is longer than 20 m from the location for water use or all locations for water use are lower than the hot wat...

Page 22: ...st be used and installed around the water outlet and inlet pipes For details about how to install freeze proof bands refer to the freeze proof band installation guide Caution In order to ensure water safety both the water inlet and outlet must be connected to a PPR pipe for each to insulate electricity The length L of the PPR pipe is calculated by the following formula L 70 x R 2 of which L is the...

Page 23: ...tween the water tank and the location for water use is hot That is the user can always use hot water when opening the tap This does not require the user to drain the cold water for use of hot water This function requires the installation of a water return system water return pump water return pipes and water return check valve and temperature sensor for water return pipes during the installation o...

Page 24: ...system during pipe connection or installation 3 After all pipes required are installed check leakage first and then take thermal insulation measures on the waterway system Particularly note the following Take thermal insulation measures on the valves and pip joints A thickness of not less than 15 mm is recommended for the thermal insulation cotton 4 The thermal insulation and pressure bearing wate...

Page 25: ... is greater than 15 meters choose a power cable with a larger cross sectional area to prevent problems caused overloading Do not pull the power cable during the installation 6 Use independent fixed socket for the supply The structure of the socket must match the power plug of the water heater and be in line with relevant national standards The socket should be placed in the safe position that is o...

Page 26: ...nscrew the screw on the connection box cover on the right side panel of the main unit to open the connection box cover Figure 9 1 shows the external wiring Figure 9 1 External wiring for CH HP3 0SWHK mapping WT200SW1 5EHK 2 If the unit is equipped with a grounding cable connect one end of the ground cable to the grounding screw of the water tank and the other end to the grounding screw in the conn...

Page 27: ...onnection box to the original place 6 Fasten the wired controller and connect it to with the communications line coming from the main unit 7 The communications line of the wired controller and the line of the temperature sensor should be separated from the power cable and the distance between them should be greater than 20 cm Otherwise the unit may not be able to communicate properly Strong wires ...

Page 28: ...ired controller Note the following issues for installation 1 Before the installation cut off the power supply to which the strong wires buried in mounting holes of the wall are connected The power supply must be cut off during the entire installation process 2 Pull out the 4 core twisted pair from the mounting hole of the wall and lead the 4 core twisted pair through the rectangular hole behind th...

Page 29: ...y to be installed outdoors or in a humid place a weatherproof box must be installed for the wired controller Figure 10 2 shows the installation diagram of the wired controller for the wired controller For the installation procedure and cautions refer to the wired controller installation method and note the following issues 1 If no socket bottom box is installed inside the wall wall plugs need to b...

Page 30: ...weatherproof box 2 Bottom shell weatherproof box 6 Wired controller baseplate 3 Spindle weatherproof box 7 Self drilling self tapping screw ST4 8 38 4 Top cover weatherproof box 8 Wired controller panel Figure 10 2 Installation diagram of the weatherproof box for the wired controller ...

Page 31: ...formance of the unit may be affected or the pipes may be frozen and damaged Is the power voltage consistent with the voltage indicated in the nameplate The unit may become faulty or the parts may be burnt Does the wire model comply with specifications The unit may become faulty or the parts may be burnt Is a safety check valve installed for the water inlet pipe If the water tank bears high pressur...

Page 32: ...troller buzzer Observe whether the wired controller is displayed properly If there is no fault code the unit is normal The wired controller has a power memory function However if the wired controller is power on for the first time it may indicate power on power off or standby Note that the unit can be powered on only after the water tank full filled with water and do not power on the unit before t...

Page 33: ...s to enter the query status When the temperature display area displays 00 press and hold MODE for 5 seconds Then 00 changes to P0 Press the or button to switch to the P3 Then press the MODE button for settings Press the or button again to change 00 in the time display area to 01 Press MODE to confirm and complete the settings After the settings are complete when the low pressure gauge pointer decl...

Page 34: ...nd hold MODE for 5 seconds to enter the query status When the temperature display area displays 00 press and hold MODE for 5 seconds Then 00 changes to P0 Press the or button to switch to the P3 Then press the MODE button for settings Press the or button again to change 00 in the time display area to 01 Press MODE to enter the defrosting mode and complete the settings for refrigerant reclamation s...

Page 35: ...5 C heated temperature 55 C Initial temperature 15 C heated temperature 70 C Ambient temperature º C Figure 14 1 Water heating capability of the CH HP3 0SWHK unit If you press the Fast button on the wired controller auxiliary electric heating with 1500 W starts to heat up water together with the heat pump In this case the water heating speed will increase by 32 L h 14 2 Operating Performance 1 Def...

Page 36: ... function If a malfunction occurs due to lightning or car radio manually cut off the power switch and then power on the unit again 4 Power memory function Every time before the power of the water heater or wired controller is cut off the wired controller automatically memorize the power switch status of the unit After the power is restored the wired controller sends power on power off signals to t...

Page 37: ...addition ensure that they are energized If the water tank is inevitably installed outdoors reduce the outdoor part of pipes including the refrigerant connecting pip and water inlet and outlet pips of the water tank Otherwise the heat loss is large power consumption increases and the water system is vulnerable to freezing In addition pay attention to thermal insulation of special positions such as ...

Page 38: ...valve at the location for water use Open the cut off valve of the outfall After the water tank is drained close the cut off valve of the outfall The drainage operations are complete 16 2 Regular Cleaning for the Water Tank To ensure the quality of hot water you use follow the following steps to regularly clean the water tank 1 Cut off the power supply of the unit 2 Close the cut off valve on the w...

Page 39: ...ing the Mg Stick drain the water tank by following drainage operations 2 Open the cap on the mounting mouth for the Mg Stick in the water tank 3 Use a hex key to unscrew the Mg Stick component and then steadily removed the magnesium to prevent it from falling into the inner container of the water tank 4 Install a new Mg Stick component into the mounting mouth of the Mg Stick and then tighten it us...

Page 40: ...l conditions the tap water pressure is around 0 3 MPa If a booster pump is used to replenish water the water replenishment pressure may exceed 0 7 MPa In this case a pressure reduction valve needs to be added to the tap water replenishment pipe to reduce water replenishment pressure Open the safety check valve s handle to check whether it is blocked on a regular about once a month basis If it is b...

Page 41: ... cause scald due to hot water Water heating without enough water might produce high temperature steam or hot water which might cause serious scald Hence guarantee the water tank is filled with water 6 The water heater is equipped with safe relief valve for reliable operation please do not change its location and never block its outlet The pipe should be directly connected to floor drain 7 Never dr...

Page 42: ... To protect the unit the microcomputer controls it to run 5 minutes after it is shut down and then immediately started The bicker sound can be heard during operating When the unit is running the wow or hiss sound can be heard sometimes which is the sound of flowing refrigerants It does not indicate a fault The main unit discharges condensate water This is a result of normal operating of the unit a...

Page 43: ...h a speed of 6 to 7 L min The wired controller alternately displays L6 and the water temperature The ambient temperature is too low it is beyond the running range of the main unit or the temperature is set too high and exceeds the maximum temperature of the heat pump In the water heating process the unit is slightly frosted If the unit runs too long for hot water it may be frosted which is a norma...

Page 44: ...e unit is shut down and F6 is displayed on the controller Outdoor heat exchanger coil temperature sensor e rror The unit is shut down and Fd is displayed on the controller Suction temperature sensor error The unit is shut down and FE is displayed on the controller Upper Water temperature sensor error The unit is shut down and FL is displayed on the controller Middle Water temperature sensor error ...

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