Air-to-water Heat Pump
4
(3) Don’t operate the unit with wet hand, and don’t allow children to operate the unit.
(4) The On/off in the instruction is for the operation to on and off button of PCB for users; cut off
power means to stop supplying power to the unit.
(5) Don’t directly expose the unit under the corrosive ambient with water or dampness.
(6) Don’t operate the unit without water in water tank .The air outlet/inlet of unit can not be
blocked by other objects.
(7) The water in unit and pipeline should be discharged if the unit is not in use, to prevent the
water tank, pipe line and water pump from frost-cracking.
(8) Never press the button with sharp objects to protect manual controller. Never use other wires
instead of special communication line of the unit to protect control elements. Never clean
the manual controller with benzene, thinner or chemical cloth to avoid fading of surface and
failure of elements. Clean the unit with the cloth soaked in neutral eradicator .Slightly clean
the display screen and connecting parts to avoid fading.
(9) The power cord must be separated with the communication line.
If there is any question, please contact with local dealer, authorized service center, agencies
or our company directly.
3 Diagram of the Operating Principle
R3T gas line temperature sensor
17
15
16
INDOOR UINT
OUTDOOR UINT
M
M
M
M
1
2
3
4
5
6
7
8
10
11
20
19
5
18
12
1 compressor
2 four-way valve
3 finned coil exchanger
4 fan motor
5 filter
6 electronic expansion valve
7 plate heat exchanger
11 flow switch
10 electric heater
9 air-vent valve
8 pump
18 water tank
12 3-way valve
17 other thermal system
16 radiator
15 under-floor heating
R6T water tank temperature sensor 1
R4T returning water temperature sensor
R1T plate outlet temperature sensor
t
R1T
R3T
t
R5T
t
R4T
t
t
R6T
t
R2T
9
19 expansion tank
20 safety valve
R2T Liquid line temperature sensor
R5T leaving water temperature sensor
t
R7T
R7T water tank temperature sensor 2
13
14
13 2-way valve
14 by-pass valve
4 Operating Principle of the Unit
DC Inverter Air to Water Heat Pump is composed of outdoor unit, indoor unit and internal-fan coil
water tank. Operation functions:
(1) Cooling;
(2) Heating;
(3) Water heating;
(4) Cwater heating;
(5) water heating;
