EsiWelma Sensigas ESN I Series Quick Start Manual

LPG and Methane gas detectors
for homes, recreational vehicles and similar sites
Conformity standard CEI 216-8
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LPG and Methane gas detectors for homes, recreational vehicles and similar sites.
230Vac, 12Vac/dc or 12...24Vac/dc power supply, depending on the model.
Relay command output with double insulation voltage free contact, so suitable for any kind of solenoid
valve or other command and alarm device.
Possibility of parallel connection of more than one detector, also for monitoring different gases.
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Use

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Operation

Gas detection

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Available
models
and ordering
information
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EsiWelma s.r.l.
The ESN.I.P/.G detectors can be used to provide a visual/audible alarm and to control a gas
shut-off valve (and to control other alarm transmitters or actuating devices), where there are
abnormal concentrations well below the LPG or Methane gas hazard threshold.
The detector will enter a warm-up phase after power-up; this will take about 60" and during
this time the detector is inoperative.
normal operation mode, and will continue in this state until it detects gas.
In this case, so when the gas concentration exceeds the threshold set-points, the detector
senses its presence and goes into the alarm condition indicated by the red LED coming on
and by the sound of the integrated buzzer. After about 20s, the internal relay is switched to
transmit a command to shut off the solenoid valve and any other shut-off or alarm devices.
Once the alarm condition is normalised, the detector is restored to its normal operating status.
Depending on the type of system constructed, it may be necessary to manually reset the
solenoid valve to restore gas flow at the dedicated reset device.
Power supply
Detector
Recessed
Wall-mounted ESN.I.P/.G.x + ESN.KW
Table-top ESN.I.P/.G.x + ESN.KT
Table-top (precabled) ESN.I.P/.G.x + ESN.KC
The letter A or B inserted in field x of the product order number indicates the type of detector, i.e.:
A = with relay command output
At the end of the warm-up phase, the detector enters
230Vac
ESN.I.P/.G.x ESN.I.P/.G.x.D
ESN.I.P/.G.x.D + ESN.KW
ESN.I.P/.G.x.D + ESN.KT
ESN.I.P/.G.x.D + ESN.KC
B = without relay command output (visual/audible alarm)
ESN.I.P..
for LPG
ESN.I.G..
for Methane gas
12Vac/dc 12...24Vac/dc
ESN.I.P/.G.x.E
ESN.I.P/.G.x.E + ESN.KW
ESN.I.P/.G.x.E + ESN.KT
ESN.I.P/.G.x.E + ESN.KC
rev. 02 of 01-09-10 / pg. 1
E223.302