Duomo BX116 Manuel - Page 3

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Typical Wiring Schematic for BX116

Return cables from sensors

ZONE 1

ZONE 2

Note: Connections for other detectors may differ. Check detector datasheet wiring schematic. 1mm

Electrical Installation

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.

Carbon

Monoxide

Duomo gas proving systems - Duomo gas detection - Duomo carbon dioxide sensors - Duomo ventilation interlocks - Are available direct or from all major stockists

Power supply

to sensors

ZONE 1

ZONE 2

PRE-

MAIN

ALARM

ZONE 1

3/5A

Power

Supply 230V

CSA cable only

Installing A Sensor

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.

SGM595

autosetting

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.

Relay outputs

PRE-

MAIN

ALARM

FAULT

ZONE 2

RELAY

Mains power

supply