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EN/06.2016/i01 © STULZ S.p.A. – all rights reserved
WPA ExPlOrEr OrIGINAl INSTrUCTIONS
4.5 Hydraulic diagrams
4.5.1 legend
Nomenc.
Symbol
Meaning
Nomenc.
Symbol
Meaning
Water line
rA
RE
AB
A
B
External filling
RE
AB
A
B
Water outlet
rE
RE
AB
A
B
RE
AB
A
B
Heating resistance
RE
AB
A
B
Water inlet
rU
RE
AB
A
B
Water shut-off valve
RE
AB
A
B
Water tank
S
DP
LP
HP
PV
PD
Temperature sensor
RE
AB
A
B
Manifold
SC
DP
LP
HP
PV
PD
Free cooling water-air
exchanger
EV
RE
AB
A
B
Evaporator
VICT
RE
AB
A
B
Victaulic
®
connections
Fl
RE
AB
A
B
Flow switch
VNr
RE
AB
A
B
Non-return valve
JO
RE
AB
A
B
Automatic release valve
VPO
RE
AB
A
B
Three-way valve
MN
RE
AB
A
B
Manometer
VSC
RE
AB
A
B
Safety valve
PD
DP
LP
HP
PV
PD
Differential pressure switch
Vx
RE
AB
A
B
Expansion vessel
PW
RE
AB
A
B
Water pump
