Electrical Wiring With Valve Seal Control (Dungs Vps 504) - Riello 40 FS5D Installation, Use And Maintenance Instructions

5.11.4 Electrical wiring with valve seal control
(DUNGS VPS 504)
Key (Fig. 19)
B5 Operation signal 2nd stage
h1 1st stage hour counter
h2 2nd stage hour counter
PG Min. gas pressure switch
S3 Remote lock-out signal (230V - 0.5A max.)
T6A Fuse
TL Limit thermostat
TR 2nd stage thermostat
TS Safety thermostat
VPS Valve leak detection control
V10 Safety valve
V11 1st stage valve
V12 2nd stage valve
X4 4-pin plug
X6 6 pin plug
X7 7 pin plug
Installation
21 GB
D4371
Fig. 19
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