Merlin CH4CO
User Guide
Rev: 07 05-19
6
4
Technical Specification
Power Supply 100-240VAC, 50-60Hz (Max 3.1VA without load)
Gas Sensor Type
Methane: semiconductor
Carbon Monoxide: electrochemical
Typical Sensor Measuring Range
Methane: 50 ~ 10,000ppm
Carbon Monoxide: 0 ~ 1000ppm
Accuracy @ 25
̊
C (77
̊
F) ± 1ppm ± 5% reading
Initial Power Up Time 30-60 seconds
Gas Level Alarm
Methane: 10%LEL by volume
Carbon Monoxide:
30 ppm for 2 hours
50 ppm for 1 hour
100 ppm for 10 minutes
300 ppm for 1 minute
Operating Conditions -32 - 122
̊
F; (0 - 50
̊
C) 0 - 95%RH, Non Condensing
Net Weight 220g
Dimensions (
135mm (W) x 95mm (H) x 37mm (D)
Installation Standard Wall mountable
Model No: CH4CO
5
Installation & Location
This device is designed for surface mounting using 2 mounting screws (not supplied) and MUST
be installed by a competent person. Mark the location of the holes needed on the wall using
the back plate as a template.
Placing at eye level allows for optimum monitoring of the digital display screen, or as guide, 5
foot (1.5 meters) from ground level.
Removing the back plate gives access to the circuit board.
Do not attempt to remove the Circuit Board! This will void any warranty you may hold.
Recommended Installation Locations
The device should be mounted near the boiler or gas fired appliance/s such as domestic and
commercial boiler rooms and basements.
When choosing your location, make sure you are able to hear the alarm from all areas.
DO place the device at eye level to optimise monitoring of the digital display.
DO place out of reach of children.
AVOID installation within 2 meters (6 feet) of heating or cooking appliances.
AVOID Installation near any ventilation openings, i.e. vents, chimneys, windows etc.
AVOID installation near ceiling fans, windows or areas exposed to direct weather.
DO NOT OBSTRUCT THE VENTS LOCATED ON THE DEVICE ITSELF
