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5
Note:
Connections when Positive Safety is off
Note:
Connections when Positive Safety is on
*1mm2 CSA cable only
Power Supply
230V AC
Lamp
GS300M wiring schematic
Sensor Installation
The sensors must be mounted as shown below with the
sintered head pointing vertically down. When replacing
sensors never seperate a sensing head from its PCB. The
sensor will have been calibrated using this particular board
and therefore will not function correctly with any other.
Electrical Installation
The GS300M is a safety device designed to give audible
alarms and automatically provide latched electrical isolation
of associated gas safety shut off valves in the event of a gas
leak or build up of toxic gases.
The sensors can be located up to 100m from the gas detector.
Cable size should be 1mm
2
CSA. If the sensor cables are
run separately in specific conduit it is not essential to use
screened cable but if the cables are routed through conduit
or trunking containing other wiring the use of screened cable
is advisable. The wiring should be performed by a qualified
person in accordance with current regulations. The plug-in
terminal rail makes installation easy and quick. Do not mount
close to any heat source or in an area where moisture is
likely to effect operation. The IP rating of this unit is IP44.
Sensors should be positioned as shown below.
If you require any guidance on this please call Duomo
technical support on +44 1905 797989.
Important Notes
Always check the wiring before powering up the system.
Do not test this sensor with anything other than Duomo test
gas (See 'GS300M Operation' section for further information).
Concentrations above this will damage the sensor and
shorten sensor life.
The installation of this gas detector does not release
the user from observing all the regulations concerning
the characteristics of the installation and the use
of gas appliances; the ventilation of the protected
environment and the removal of products of combustion.
Duomo will not be held responsible or liable for any damage
caused to people, property or animals resulting from incorrect
connection, installation or application of this gas detector. To
ensure correct function after installation Duomo provide a
commissioning service using calibrated test gases. For this
service call +44 1905 797989.
