C6.1.6/0117-1017/E
9
2.8.6 P&I diagram for ZXDE units
IMPORTANT
Check valve in front of liquid receiver! Risk of excessive internal
pressure caused by liquid expansion!
Check necessary safety devices
according to EN 378.
Figure 5: P&I diagram for ZXDE units
Position
Description
Comments
Fast access
menu
1 (M1)
High efficient Copeland Scroll compressor
(ZBD for Digital)
2
Oil separator
Pre-charged with 0.5 L
3 (M2)
Condenser with 1 or 2 fans
4
Liquid receiver with service valve
5
Filter drier / sight glass combination
6
Service valve, liquid line
7
Service valve, suction line
PSL (S2)
Adjustable low-pressure switch (not factory
mounted)
System safety
(option)
PSH (S1) Non-adjustable high-pressure switch
System safety
PTL (B1)
Suction pressure sensor, low pressure
Compressor setpoint
P1P
PTH (B2) Pressure sensor, high pressure
Fan speed control
P2P
TT1 (B3)
Discharge temperature sensor
Compressor safety
P3t
TT2 (B6)
Ambient temperature sensor
Additional functions
P6t
Table 7: Legend of the P&I diagram for ZXDE units
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