Service manual

3. Characteristics Curve
3.1 Relation of Air-Conditioner Low Pressure and Temperature (Fig. 3-1)
Cooling: The indoor and outdoor have the same condition.
Heating: For indoor condition, the dry bulb temperature is 21℃ and the wet bulb temperature 15.5℃.
50 60 70 80(%)
2
3
4
5
6
7
15 20 25 30 35
Dry Bulb Temp. (
℃
)/Humidity(%)
Low Pressure (Absolute)(bar)
2
3
4
5
6
7
0 5 10 15 20
干球温度(℃)/湿度(%)
低压压力(绝对值)(bar)
(a) Cooling (b) Heating
Fig. 3-1
3.2 Performance Curve (Fig. 3-2)
(a) Cooling Characteristics (b) Heating Characteristics
Fig. 3-2
Low Pressure (Absolute)(bar)
Dry Bulb Temp.(℃) / Humidity(%)
Change of Cooling Capacity(%)
Outdoor Dry Bulb Temp. (℃)
Outdoor Dry Bulb Temp. (℃)
Indoor Dry Bulb Temp. (℃)
Indoor Dry Bulb Temp. (℃)
Indoor Relative Humidity (50%)
Outdoor Relative Humidity (50%)
Change of Heating Capacity(%)
10