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SINCLAIR
② Type selection of water tank shall also be made based on local climatic conditions and opinions from
professionals.
③ For units with water tank equipped with an electrical heater, that is, the water tank model of which
starts with SWH, both the heat pump and electrical heater are started for heat up under low
ambient temperature or "RAPID" function.
④ If the specification parameters change with product improvement, refer to the parameter specified
on the nameplate.
4.3 Performance Data of Hot water Mode
environment
temperature (°C)
45
20
7
0
WATER
-7
-15
-20
5 Working Principle
5.1 Brief Introduction to Working Principle
As the refrigerant has different phase-transition temperature under varied pressure, it enables the
heat pump to transfer heat of low-temperature heat source to the high-temperature heat source. The air
source water heater unit utilizes the heat pump to obtain heat from the ambient low-grade energy (air
source) via thermodynamic cycle by consuming partial electrical energy, and then delivers heat to the
water tank for heating up water.
5.2 Working Diagram
5.2.1 Working Diagram
The air source heat pump water heater is designed based on the heat pump principles. It consumes
a part of electric energy as a supplement, and by using the thermodynamic cycle, absorbs heat from the
low-grade energy (air source), and transfers the heat to a condenser through a compressor, and
releases it to the water inside the water tank. In this way, the water is heated up.
AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
inlet water temperature
MODE
(°C)
29
15
10
HOT
10
10
10
10
outlet water
temperature
(°C)
55
55
55
55
55
55
55
4
capability
COP
(kW)
(W/W)
2.90
7.80
3.50
4.10
1.80
3.80
1.90
2.30
2.40
2.20
1.90
1.80
1.40
1.50
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