Type OC211 to OC215
A Return
B Flow
C Hydraulic circuit
D Refrigerant circuit
1 Service valve, high pressure side
2 High pressure switch
3 Compressor
4 Low pressure switch
5 Service valve, low pressure side
6 Plate-type heat exchanger
7 Differential pressure switch
8 Air vent valve
9 Circulation pump, hydraulic circuit
qP Diaphragm expansion vessel
qQ Safety valve
qW Pressure gauge
qE Fill & drain valve
qR Capillary pipe
qT Air heat exchanger with fan
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