Duomo gas proving systems
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Duomo gas detection
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Duomo carbon dioxide sensors
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Duomo ventilation interlocks
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Are available direct or from all major stockists
Typical Wiring Schematic for BX116
Electrical Installation
Installing A Sensor
The BX116 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 sensor
can be located up to 100m from the gas detector. Cable
size should be 1mm2 CSA. If the sensor cables are run
seperately 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 our technical help on 01905
797989.
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.
Important Notes
Always check the wiring before powering up the
system.
Do not test this sensor with anything other than
Duomo test gas (see
'BX116 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, installation and and the use of gas
appliances; the ventilation of the environment and the
elimination of combustion products in accordance with
the local recommendations, regulations and bylaws. For
any damage caused to people, property or animals
resulting from incorrect connection, installation or
application of this gas detector Duomo will not be held
responsible or liable. To ensure correct function after
installation Duomo provide a commissioning service
using calibrated test gases. For this service call 01905
797989.
SGM595
autosetting
ON
SGM595
autosetting
ON
SGM595
aut
osetting
ON
300
1600
300
Natural
Gas
Carbon
Monoxide
L.P.G
.
Note: Connections for other detectors may differ. Check detector datasheet wiring schematic. 1mm
2
CSA cable only
Mains power
supply
Relay outputs
2
1
3
2
1
3
8
7
6
5
4
2
1
3
8
7
6
5
4
Return cables from sensors
ZONE 2
ZONE 1
ZONE 2
ZONE 1
Power supply
to sensors
2
1
3
2
1
3
12
11
10
9
8
7
6
5
4
FAULT
RELAY
PRE-
ALARM
ZONE 1
MAIN
ALARM
ZONE 1
MAIN
ALARM
ZONE 2
PRE-
ALARM
ZONE 2
NC
NC
NC
NO
NO
NO
C
NC
NO
C
C
NC
NO
C
C
3/5A
Power
Supply 230V
AC
N
Ph
