Heat pump WSDC-125-B

Product description

DC Inverter Heat Pump

Air to Water Split DC Inverter Heat Pump (heating/cooling/DHW modes)
Weswen DC inverter heat pump is one of the best heat pumps for house heating so far, with advanced DC inverter technology, saving 40% electricity than normal on/off heat pump in practical operation. The whole system is optimized with variable fan speed, while the temperature compensation function contributes to a more comfortable indoor environment. It can work with solar, boiler or electric heater according to practical condition of the heating system.


  • with Advanced DC inverter technology, it saves 40% energy than normal heat pump in practical operation.
  • 5 modes to manage heating, cooling and DHW, fit your need all year round.
  • With intelligent Heating curves (temperature compensation function), the water setting temperature adjusts automatically as the house’s heat loss changes.
  • Automatically variable fan speed in 3 grades to optimize heating efficiency.
  • Can work with room thermostat / master controller / solar controller.
  • Can work with auxiliary heater.
  • Split design with water system indoor, preventing water frozen problem.
  • Aviation plug for wire connection between indoor unit and outdoor unit, simplifies installation and avoids mistakes.
  • In indoor unit contains brazed plate heat exchanger, WILO circulation pump, expansion vessel, flow switch, water pressure gauge, air vent.
  • Allows absence of buffer tank for heating/cooling.

Technical Specifications

Power supply, V/Ph/Hz 220~240/1/50
Function heating, cooling, DHW
Rated heating capacity(A7/W35)e, KW 17.2
Heating capacity range, KW 2.6~19.8
Heating Input Power, W 1000-4400
COP (A7/W35) 2.9~4.5
Rated cooling capacity (A35/W7), KW 14.5
Cooling capacity range, KW 2.3~16.1
Cooling Input Power, W 970-4300
EER (A35/W7) 2.4~3.5
Max. Hot water temperature, C 55
Applicable ambient temp, C -20 +45
Refrigerant R410A
Compressor Inverter rotary
Condenser SUS316# brazed plate heat exchanger
Throttling electronic expansion valve
Evaporator 2-row fin-tubes
Fan variable speed axial motor fan
Built-in circulation pump Wilo
Built-in expansion vessel 2L
Water flow volume, m3/h 2.3
Water connection 1″F
Net dimension H*W*D (outdoor unit), mm 930*390*1270
Net dimension L*W*H (indoor unit) 732*410*319
Net Weight (outdoor unit), kg 121
Net Weight (indoor unit), kg 44
Noise (outdoor unit), dB(A) 53
Noise (indoor unit), dB(A) 30

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