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Installation, Operation & Maintenance
Auto Reset & Buzzer
In the event of a power loss – the mini-merlin will
restart automatically when power is restored.
The buzzer will sound every 15 seconds during pre-
alarm and continuously at alarm level.
This is the factory set condition.
Building Management System Integration
This device can be integrated with a Building Management System (BMS), a home alarm system, or be
used as part of a boiler low voltage safety limit to make or break a circuit on both gases separately, (valve
open or valve closed) depending on the system.
These switches can be used for a variety of purposes including triggering alarm contacts, operating and
external relay for multiple appliance shut-down and generating status signals for a BMS system.
Specification
Product:
Version:
Display
Screen Brightness
Initial Stabilisation Time
Power Input Voltage
Valve Output Voltage
Internal Fuse Rating
Current Consumption
Accuracy @ 25°C / 77°F
Operating Temp
Audible Buzzer
Volt Free BMS relay output
Wire Ratings
Gas Sensor Type
Gas Sensor Measuring Range
Gas Value Pre-Alarm
Gas Value Alarm
Dimensions (Inch)
Weight
Rev: 20 12-20
ON
Mini Merlin
CH4CO
1.8" TFT – Thin Film Transistor
Non- adjustable
60 Seconds approx.
100-120Vac / 50-60Hz
100-120Vac / 50-60Hz
Anti-Surge 3.15A 250Vac
3W Max
± <10%
32 – 122°F 30-85%RH Non-Condensing
65dB (controlled conditions @ 1 ft)
0.5A switching current (resistive load)
Min. 18AWG / 75°C min / Copper only.
Methane: Semi-conducting
Carbon Monoxide: Electromechanical
Methane: 500-10,000ppm
Carbon Monoxide: 0-1000ppm
Methane: >8% LEL
Carbon Monoxide: 25ppm
Methane: >10% LEL
Carbon Monoxide: >50ppm
3.7(W) x 5.5(H) x 2.4 (D)
8.54oz Approx.
In the event of a power loss – the mini-merlin will need to be
reset manually when power is restored.
This is the factory set condition.
The buzzer will not sound at any gas level.
Mini-Merlin
OFF
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