EsiWelma s.r.l.
rev. 02 of 01-09-10 / pg. 4
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Wiring diagrams:
Example a): - Command of a solenoid valve (Normally Open); in this mode, when the alarm threshold is ex-
ceeded the solenoid valve will close and therefore the gas supply will be cut-off.
Example b): - Command of a solenoid valve (Normally Closed); in this mode, the solenoid valve will close and
therefore the gas supply will be cut-off: when the alarm threshold is exceeded, if there is a
power failure and if the actual solenoid valve is disconnected.
Example c): - Command of a solenoid valve (Normally Closed) and of visual and audible alarms from several
locations. The contacts must be connected in series.
Example d): - Command of visual and audible alarms at the same voltage as the power supply.
Example e): - Command of visual and audible alarms at a different voltage from the power supply.
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Connection
diagrams
Installation
data
To be filled in by Installer
Installer's stamp
Installation site
……………………………………………………………….
Product order number
……………………………………………………………….
Part number
……………………………………………………………….
Installation date
……………………………………………………………….
4
5
230Vac
e)
ESN.I.G./.P..
2
1
3
12 or 12…24Vac/dc
230Vac or 12Vac/dc or 12…24Vac/dc
4
5
d)
ESN.I.G./.P..
2
1
3
230Vac or 12Vac/dc or 12…24Vac/dc
4
5
a)
ESN.I.G./.P..
2
1
3
NO
230Vac or 12Vac/dc or 12…24Vac/dc
4
5
b)
ESN.I.G./.P..
2
1
3
NC
230Vac or 12Vac/dc or 12…24Vac/dc
4
5
c)
ESN.I.G./.P..
2
1
3
NC
4
5
ESN.I.G./.P..
2
1
3
