Summary of Contents for PolarHeat SHCW814G
- Page 1 Single/Dual System SHCW814G Controller of Air Source Heat Pump Water Heater Installation Manual Before installing the controller, please read the instructions in detail. Page 1 of 25...
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Page 2: Safety Precautions
【Safety precautions】 Danger When used incorrectly, it may cause dangerous situations, personal injury or casualties. Symbol Cautio description When used incorrectly, it may cause dangerous situations, which may lead to equipment damage or accelerated damage. ！ Please install it on the non-combustible plate such as metal, and fix it firmly to avoid falling due to vibration. - Page 3 When the machine is running, do not check the signal. When the machine is running, do not change the parameter settings at will. When the machine is running, do not get too close to the machine. If a repair job is necessary, please contact the equipment manufacturer.
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Page 4: Product Introduction
1. Product Introduction 1.1 Overview ⚫ This product is suitable for single compressor and double compressor system. Single-phase 220V or three-phase 380V is optional. ⚫ The operation modes of the product are: hot water mode; heating / cooling mode; modular machine (8 modules). ⚫... -
Page 5: Spare Parts List
Expansion Valve Low Temp Type ： 4 Electronic Expansion Valve Single compressor Normal Temp Type：8 NTC Temp Sensor Low Temp Type ： 8 NTC Temp Sensor Discharge gas temperature sensor 50K 3950， Others 5K 3470 Double compressors Normal Temp Type：12 NTC Temp Analog input Sensor Low Temp Type ：... - Page 6 2. Wire Controller Display Description, Parameter Query and Fault Table Wire Controller Display Description (model：SHXK814) After the first power-on, the LCD screen displays the version number of the line controller for 2 seconds, and then the full screen displays, and it enters the normal working state. 【ON/OFF】...
- Page 7 Press 【Query/Time】 for 3 seconds and enter the parameter query state. [timing / confirm] key Press this key to enter the timing on / off setting. In the non clock setting state, press this key to enter the timing period selection of the unit. There are 3 periods in total.
- Page 8 Discharge gas temp 2 After valve temp 2 in cooling Compressor current 1 /Return Water Temp Compressor current 2 Compressor Current Set Value Main Circuit EEV opening 1 Main Circuit EEV opening 2 Auxiliary Circuit EEV opening 1 Auxiliary Circuit EEV opening 2 External Version 1 External Version 2 Low Water Level Sensitivity...
- Page 9 System Check whether the three-phase wiring of Phase Loss Phase Loss Shutdown power supply is correct System Water Flow Switch Water Flow Switch 1 open for 3 Check Water Flow Switch , water pump and Shutdown Protection times in 1 hour water pipe System High Pressure Switch 1...
- Page 10 Failure Suction temp sensor 1 Sensor short or open Secure connector or replace sensor report failure System Low outlet water temp Outlet water temp lower than Check pipeline filter, valve and water pump Shutdown protection setting head System Compressor 1 current exceeds Compressor 1 overcurrent Check compressor current Shutdown...
- Page 11 Note: 1. The temperature fault protection can be recovered automatically, and other fault protection must be restarted by pressing 【ON/OFF】key. 2. In case of module fault, the number in front of E indicates the unit number in fault. For example, wh en 2E09 is displayed, E09 communication fault occurs in unit 2.
- Page 12 2) the address code of the unit must be set before the unit is powered on. Ensure that the address codes o f each unit are different; after power on, the dial switch will not be detected. 3) modular mode: 1 # the module is the master unit, which controls the water tank, water level, end switch a nd circulating water pump;...
- Page 13 Digital Input Digital Output Analog Input Analog Output Special Interface End switch ※ Ambient Temp 1#Main EEV Enthalpy Valve Display Panel interface 485 Water Flow Switch Outlet Temp 2#Main EEV 1#Compressor Modular Interface485 2#High Pressure 2#Compressor Water Tank Temp※ 1#Auxiliary EEV Transformer primary 2#Low Pressure Inlet Temp...
- Page 14 3.3.4 Division of heating energy regulation area Loading Holding Emergency Start Unloading Emergency Stop TSETH-P03-b08 TSETH-P03 TSETH TSETH+b09 Graph 2 Note: TSETC: setting temperature in cooling; TSETH: setting temperature in heating; P03 (parameter setting item): differential temperature in heating; P04: differential temperature in cooling; B08: differential temperature for return water in emergency start;...
- Page 15 3.6 SHXK814G2 wiring diagram of dual system of low temperature unit Note: For heating/cooling model, CN 10 is After valve sensor 1, CN18 is After valve sensor 2. P14 is Chassis heating. The water level switches K8, K9, and K10 are invalid; For hot water model, CN 10 is Return water temp sensor, CN18 is invalid, P14 is Water supply valve, the water level switches K8, K9, and K10 are effective.
- Page 16 2) after the compressor shuts down, the circulating pump is delayed to shut down. 3) when the temperature of the inlet water is too low and the pipeline is protected against freezing, the circulating pump is forced to start. 4) in defrost mode, the circulating pump is forced to start. In Heating and cooling mode: when the end switch is invalid, the circulating pump operates as the above.
- Page 17 When the water temperature is ≥ the set temperature, the electric heating is turned off; When the water temperature is ≤ the set temperature - P10 (default 7 ℃), the electric heater is turned on; 3) when the master unit defrosts, the electric heater starts. When the unit enters the secondary anti freezing or water tank anti freezing, the electric heater is turned on.
- Page 18 minimum opening in hot water or heating mode is L22 ~ L26. The adjustment interval time is L04 seconds. The electronic expansion valve of each system works and adjusts independently; Hot water / heating mode: △ P = suction temperature – coil temperature – L22 ~ L26 Cooling mode: △...
- Page 19 3 ℃), ambient temperature is ≤ H01 (default 15 ℃), and the compressor is running, time counting starts, when timing is ≥ H04 (default 60 minutes); 2) when the ambient temperature is ≤ H08, the cumulative operation time of the compressor is ≥ H12 (default 90 minutes) ;...
- Page 20 1) when the low pressure switch is detected to be open for a continuous 10 seconds, the unit will stop. When the low pressure switch is detected to be closed, the unit will start (the compressor must meet the requirements of 3 minute delay).
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Page 21: System Parameter Setting
In the shutdown state, if the pipeline level I antifreeze protection lasts for more than 10 minutes, the unit enters level II antifreeze protection. The system starts the heating mode and automatically starts the electric heater, 3 minutes later, if the water inlet temperature is ≥ 20 ℃ for a continuous 10 seconds, the unit exits pipeline II antifreeze protection. - Page 22 ng Mode Range of Maximum Temp In Hot Water Mode 60℃ 30～85 Valid in Hot water Mode Range of Maximum Temp in Hea 55℃ 25～80 Valid in Heating/Cooling Mode ting Mode Differential Temp in Hot Water /H 5℃ 1～20 eating Mode Differential Temp in Cooling Mode 5℃...
- Page 23 in heating When the unit is a hot water heater, this paramet Outlet water temperature too lowi er is the opening time of the return valve. 5℃ n cooling or opening time -19～15 This parameter is the protection value of outlet wa of return valve ter temperature too low when it is a heating/coolin g unit.
- Page 24 Action interval of electronic expan 30sec 5～90 sion valve Superheat value in cooling mode -20～60 Reserved -20～60 Minimum openings of EEV in coo 10～250 Value*2=number of pulses ling mode Initial openings of main EEV in h 10～250 Value*2=number of pulses eating Initial openings of main EEV in c 10～250...
- Page 25 Low pressure switch protection 0～15 0[no]、1[yes] Medium pressure switch protectio 0～15 0[no]、1[yes] Discharge gas temperature 0～15 0[no]、1[yes] End switch 0～3 0[yes]、1[no] Waterflow switch protection 0～1 0[no]、1[yes] powerdown memory function 0～1 0[no]、1[yes] Reserved 0～15 When the end switch is effective, it is set as 0 w Interval stop time of water pump 0～60 ater pump normally open.
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