2WAY VRF SYSTEM
Control Functions
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3. Compressor Control
Compressor discharge temperature protection
Discharge temp.
°F (°C)
psi (MPa)
The compressor capacity is controlled according to the table below.
Abnormal low pressure protection
The compressor capacity is controlled according to the table below.
*Discharge temperature that is used for this control is the highest temperature among all compressors.
222.8
(
106)
219.2 (104)
217.4 (103)
213.8 (101)
Capacity goes down 2.0 hp
Capacity goes down 1.0 hp
Capacity goes down 0.5 hp
Compressor capacity increase prohibited
Compressor capacity increase possible
Compressor
capacity
decrease
221.0 (105)
Stop If this temperature is detected at regular intervals, alarm appears.
Low pressure
36.3 (0.25)
24.7 (0.17)
Capacity goes up slowly
Capacity increase prohibited
Capacity goes down
29.0 (0.20)
No restriction
hp = horsepower
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6-3. Protection Control
SM830237-07_北米向け2WAY_VRF.indb 9
18/06/19 18:55:30
