Electrical Wiring With Valve Seal Control (Dungs Vps 504); 5.12.4 Ionisation Current - Riello 40 GS10D Installation, Use And Maintenance Instructions

5.12.3 Electrical wiring with valve seal control
(DUNGS VPS 504)
Key (Fig. 19)
B4 1st stage operating signal
B5 2nd stage operating signal
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
V11 2nd stage valve
X4 4-pin plug
X6 6 pin plug
X7 7 pin plug
Installation
D4148

5.12.4 Ionisation current

The minimum current necessary for the control box operation is
3 µA. The burner normally supplies a higher current value, so that
no control is needed. Anyway, if you want to measure the ionisa-
tion current, you need to open the connector (CN1)(Fig. 18) on
the red wire and insert a microammeter as shown in Fig. 20.
Control box
D5006
21 GB
*
*
Connect the 2nd stage thermo-
stat between terminals T6 and
T8, removing the bridge.
Connector
Fig. 19
Probe
Fig. 20
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