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Installation & Operation Manual
Auto Reset & Buzzer Switches
There are two dip-switches on the circuit board.
In the event of a power loss – the mini merlin will
Auto Reset
restart automatically when power is restored.
The buzzer will sound every 15 seconds during
Buzzer
pre-alarm and continuously at alarm level.
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
Gas Sensor Measuring Range
Rev: 11 08-20
ON
This is the factory set condition.
Product:
Version:
Display
Screen Brightness
Initial Stabilisation Time
Power Input Voltage
Valve Output Voltage
Fuse
Current Consumption
Accuracy @ 25°C / 77°F
Operating Temp
Audible Buzzer
Volt Free BMS relay output
Wire Ratings
Gas Sensor Type
Gas Value Pre-Alarm
Gas Value Alarm
Dimensions (Inch)
Weight
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
LPGCO
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.
LPG: Semi-conducting
CO: Electromechanical
LPG: 500-10,000ppm
CO: 0-1000ppm
LPG: >8% LEL
CO: 20ppm
LPG: >10% LEL
CO:
20ppm after two (2) hours
50ppm after one (1) hour
100ppm after ten (10) minutes
300ppm after one (1) minute
3.7(W) x 5.5(H) x 2.4 (D)
8.54oz Approx.
Mini Merlin
OFF
11