Merlin Gas Detectors
Product Data Sheet
Rev: 09 Date: 19-01-18
3
1
General information
S&S Northern supply a full range of remote gas detectors to compliment the Merlin
range of panels. These consist of carbon monoxide, natural gas, LPG and oxygen detectors.
Our range of gas detectors are designed to work with a Merlin control panel.
2
Installation
2.1
Mounting the Merlin gas detector
The control panel is designed for surface mounting using two mounting screws. Removing the back
plate gives access to the circuit board. Do not attempt to remove the PCB. For the positioning of specific
gas detectors please see below:
Natural Gas Sensor - 30CM from the ceiling.
Hydrogen Gas Sensor
– 30CM from the ceiling.
Carbon Monoxide Sensor
– 1.5 meters from ground level.
LPG Sensor
– 30CM from the ground level.
Oxygen Sensor
– 1.5 meters from ground level.
2.2
Power Supply
A 12vdc - 24vdc electrical supply should be supplied to the panel and should be connected to the
terminals marked
[+ -]
.
2.3
Alarm Relay
The Merlin range of gas detectors can work with various systems. If you are using the GDP range you
will need to use the [
C/L
] terminal as an alarm relay whereas on most systems gas detectors should be
wired to the gas detector terminal on the Merlin panel using the [
N/C
] & [
COM
].
Note: all low voltage connections should be made using a screened cable to avoid electrical interference.
3
Operation
3.1
System On and Off
1.
To turn on any Merlin gas detector you need to supply power to the detector
2.
To turn off any Merlin gas detector you need to remove power to the detector
3.2
LED status
Power LED (GREEN)
When the system is connected to the power supply, the Green Power LED will illuminate.
Low LED (AMBER)
When the gas detector has reached the low level alarm state this will illuminate Amber.
Please see Heading 4 on page 4 for further information.
High LED (RED)
When the gas detector has reached the High level alarm state this will illuminate red and the buzzer will
sound.
Please see below for further information
.
