Access & Mounting; Internal Board Overview - CGS Merlin 'S' Range Installation, Fonctionnement Et Entretien

Installation, Operation & Maintenance Manual
Access & Mounting
Unpack all the parts.
The detectors are designed for surface mounting and must be installed by a licensed,
insured contractor or competent person. A deeper back enclosure is supplied to
accommodate wiring where required.
Carefully remove the rear cover from the unit by releasing the two latching clips located at
the bottom of the case. To do this – use a small flat head screwdriver.
Using the rear cover - mark the screw holes to the wall and ensure the wall surface is flat to
prevent base distortion. There are two pre-fractured areas for cable entry provided on the
inside of the rear cover which may be cut away as required. After executing the mounting
and the connections – replace the rear cover ensuring the two clips are latched.
Make a note of the installation date on the label located on the side of the unit.
We recommend all Merlin gas detection equipment is commissioned by a competent/trained engineer to
ensure correct installation and operation. Contact CGS for more information.

Internal Board Overview

Note: Terminal blocks are plug/socket type and may be removed to ease wiring.
Be careful when creating access for cables – Damage to circuit boards will void any warranty!
Any damage attempting to remove the circuit board parts may void any warranty!
Detectors must be earthed/grounded for electrical safety and to limit the effects of EMC or R/F interference!
For MODBUS communications, a shielded cable is used!
IOM Iss: 4 11-21
Merlin Detector-TFT
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