AGS Merlin Installation & Operation Instructions - Page 9

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Also for AGS Merlin: User & Installation Manual (5 pages), User & Installation Manual (6 pages), Installation & Operation Manual (12 pages)

AGS Merlin Installation & Operation Instructions

Wiring to Merlin 'S' Controllers

Power is supplied to a detector via the GDP terminal [+ / -] and using the 'S' panel [GAS DETECTOR] terminal
[+ / -]. For a BMS alarm relay use [COM] and [NC] on the detector and the [open/close] switch terminal on
the panel. BMS are volt free/dry contact connections.
A relay will change state when in alarm or when gas is detected. BMS terminals can be used in conjunction
with other external relays that affect other devices and controls such as purge fans and audible alarms etc.

Audible Alarm

There is a switch on the detector board identified as [Buzzer On/Off].
The detector can be configured to have an audible alarm or not when gas levels reach the alarm set points.
The alarm will continuously sound – there are no provisions to silence the alarm, gas levels must drop to a
safe value for the alarm to stop.

Factory Set Condition

Buzzer On/Off Switch
Chain Termination Resistor
Detector ID Switches
Rev 01
ON
OFF
ID 1
Merlin Gas Detector Installation & Operation Instructions
Page 9 of 16