13
Heat
pump
Heating (cooling) water circuit diagram
Pressure gauge
Thermometer 0~100
Shut-off valve
Solenoid valve
Check valve
Water valve
Y type water filter
Level controller
Electric two-way
valve
Water flow
switch
Differential pressure
bypass valve
Water replenishing port
Expansion tank
Overflow port
Drain port
Electronic descaler
End water supply
End return water
Flexible pipe
Gate valve
Be sure to install the Y filter at water inlet of the unit! Pay attention to the
installation position for easy removal and cleaning;
Ensure that the circulating water inlet of the unit is at least 100mm away from
the bottom of the water tank, and the customer’s hot water supply pipe is at
least 80mm away from the circulating water inlet;
Tap water replenishment is controlled by a water level switch. When water is
at a high level, it is circularly heated to the set temperature of the unit and the
unit stops at this temperature; when water is at a low level, the
electromagnetic two-way valve opens for water replenishing while the unit is
turned on;
The water flow switch is not supplied with the unit, so it should be purchased
4.7.Power supply connection
Open the front panel, and open the power supply access.
The power supply must go through the wire access and be connected to the
power supplyterminals in the controlling box. Then connect the wire plugs of the
wire controller and main controller.
If the outside water pump is needed, please insert the power supply wire into the
wire access also and connect to the water pump terminals.
If an additional auxiliary heater is need to be controlled by the heat pump
controller, the relay (or power) of the aux-heater must be connected to the
relevant output of the controller.
4.Installation
