Circulating Air Source Heat Pump Water Heater
18
Remark
：
Connect No.4 switch
（
SW4
）
, No.3 switch
（
SW3
）
, No.2 switch
（
SW2
）
, No.1 switch
（
SW1
）
, water flow switch, circulating water pump, supply/back water pump, temperature sensor of
water tank, user side temperature sensor top master module; no need to connect slave module. Under
floor heating mode, it’s no need to connect water-level switch.
Note: When connection wires between the main unit and the water tank are used, please add
wire-passing pipe or wire groove for protection to reach the same protection requirement with
polychloroprene sheathed flexible cord (IEC60245 57# wire). When installing the temperature sensor
wires, please fix it with wire clamp. The fixation of the wire clamp can let the temperature wire support
100N tension force.
（2）
Slave module
（
3
）
Connection among modules
CN15
CN25
CN15
CN25
CN25
CN15
Wired
controller
1#unit
2#unit
3#unit
CN2
CN1
inspection
board
（
4
）
Wiring layout
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.
Disconnect the power supply before cleaning and maintenance.
1
）
The unit should be installed according to national wiring regulation.
2
）
Rated voltage and the special power for the air conditioner must be adopted.
3
）
Power cord should come along the wire-passing groove or wire duct.
4
）
When connecting the power cord to the electric cabinet of unit, it must be protected with rubber or
plastic to prevent damage.
5
）
The specification of conducting wire should be 1mm
2
or above.
6
）
The signal for connecting the water-level switch is DC weak current. Do not come along with the
