Figure 69: Four-pipe system PID
Table 16: PID legend
PID
ref.
Desciption PID
ref.
Desciption PID
ref.
Desciption PID
ref.
Desciption
FWV 4-way valve BPHE1 Liquid loop 1
PHE
SV Solenoid valve BV Ball valve
Fan EC fan BPHE2 Liquid loop 2
PHE
CV Check valve – –
Coil Ambient coil BPHE3 Economizer
PHE
F Filter – –
OS Oil separator EEV Electronic
expansion
valve
RV Dual relief
valve
– –
YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump96
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