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G 221 - RGS 128-228 Eng. 25.11.08 MZ REV. 01
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COSTER
DOMESTIC MICROPROCESSOR- BASED
SELECTIVE DETECTORS WITH RELAY OUTPUT
G 221
25.11.08 MZ
REV. 01
RGS 128 - 228 Eng.
2. TYPICAL INSTALLATION
• Conform to standards:
– CEI EN 50194 and CEI EN 50244 for combustible gases
– CEI EN 50291 and CEI EN 50292 for carbon monoxide (CO)
• Supplied with internal sensor for methane or for LPG
• Option of connecting 1 or 2 remote sensors for methane, LPG or CO
• SPDT relay output
• LEDs for power, pre-alarm, alarm and sensor fault
• Power supply : 230 V~ ; Protection : IP 42
1. APPLICATION
RGS gas detectors are designed to guarantee the safe use, in non-industrial premises, of domestic gas appliances
such as hobs, ovens, wall boilers .
They are able to monitor, by means of the internal sensor and one or two optional remote sensors, the
concentration in the air of the commonest combustible gases: methane, LPG-propane.
By means of a special remote sensor they can also control the concentration in the air of carbon monoxide (CO).
The relay output can control a gas shut-off valve, a fan, etc
Code Internal Alarm Pre-alarm Suitable
sensor threshold threshold external sensor
RGS 128 Methane 0.80 % 0.50 % SRS 158/258/358
RGS 228 LPG (Propane) 0.35 % 0.20 % SRS 158/258/358
REMOTE SENSORS
Code Gas Power supply Protection Maximum connection length
4x1mm
2
4x1.5mm
2
SRS 158 Methane 230 Volt~ IP 42 50 m 75 m
SRS 258 LPG (Propane) 230 Volt~ IP 42 50 m 75 m
SRS 358 CO (Carbon monoxide) 230 Volt~ IP 42 50 m 75 m
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