AGS MINI MERLIN Installation & Operation Manual
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AGS MINI MERLIN Installation & Operation Manual

Lpgco dual gas detector
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Installation & Operation Manual

Your new Mini Merlin is a dual gas sensor carefully designed and tested to monitor levels of LPG and
Carbon Monoxide (CO) in the air. If there is a dangerous build-up of gas or unsafe levels of gas at the
sensor, this device can shut off the gas supply via a gas safety valve and/or a gas fired appliance. This
device has additional features for resetting systems, as well as audible and visual alarms - It can also be
integrated with a Building Management System (BMS).
The information contained within this manual should be referenced for typical installation and operation
only. For specific requirements that may deviate from the information in this guide – contact your supplier.
Rev: 11 08-20
MINI MERLIN
LPGCO DUAL GAS DETECTOR
Liquid Petroleum & Carbon Monoxide Gas
Installation & Operation Manual
Please read this manual carefully and retain for future use.
Mini Merlin
1

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Summary of Contents for AGS MINI MERLIN

  • Page 1 Please read this manual carefully and retain for future use. Your new Mini Merlin is a dual gas sensor carefully designed and tested to monitor levels of LPG and Carbon Monoxide (CO) in the air. If there is a dangerous build-up of gas or unsafe levels of gas at the sensor, this device can shut off the gas supply via a gas safety valve and/or a gas fired appliance.

  • Page 2: Table Of Contents

    Installation & Operation Manual Mini Merlin Content IMPORTANT SAFETY INSTRUCTIONS ............ 3 Manufacturer’s Warranty ................... 3 CARBON MONOXIDE GAS ............... 4 General Information ....................4 LIQUID PETROLEUM GAS ................ 5 General Information ....................5 INSTALLATION ..................6 Planning ......................... 6 Typical Location and Positioning................

  • Page 3: Important Safety Instructions

    Installation & Operation Manual Mini Merlin IMPORTANT SAFETY INSTRUCTIONS  Before any installation, use or maintenance read this manual carefully.  The information contained within this manual should be referenced for typical installation and operation only.  For site specific requirements that may deviate from the information in this guide – contact your supplier.

  • Page 4: Carbon Monoxide Gas

    Vehicles and other combustion engines running in open or confined spaces.  Burning charcoal or fuel in grills in an enclosed area or near the home. For more information, please visit our website or contact your local AGS distributor. Rev: 11 08-20...

  • Page 5: Liquid Petroleum Gas

     A vessel that has contained LPG is nominally empty but may still contain LPG vapour and be potentially dangerous. Therefore treat all LPG vessels as if they were full. For more information, please visit our website or contact your local AGS distributor Rev: 11 08-20...

  • Page 6: Installation

    Installation & Operation Manual Mini Merlin INSTALLATION Planning Our monitors should be installed in areas at risk of gas leaks e.g. over boilers, valves, meters or storage of LPG. Take in to account the design of the air flow patterns within the zone area.

  • Page 7: Mounting

    Installation & Operation Manual Mini Merlin Mounting Unpack all the parts! This device is designed for either surface mounting, or mounted on a one or two gang electrical box and must be installed by a licensed, insured contractor. This device comes with a deep base back cover and barrier slip to maintain segregation between high and low volt connections.

  • Page 8: Circuit Board Overview

    Installation & Operation Manual Mini Merlin Circuit Board Overview Wiring Gas Valve Output A gas solenoid valve should be powered using the terminals marked [VALVE OUT]. When the valve out terminal is wired to a normally closed (NC) gas solenoid valve, the device can be used to isolate the gas supply for multiple appliances.
  • Page 9 Installation & Operation Manual Mini Merlin Appliance Limit Circuit The device can be used to directly shut down a gas appliance when a fault condition is detected (gas leak), by wiring the normally closed (NC) and common (COM) terminals of one BMS into the low voltage safety limit circuit of the appliance.
  • Page 10 Controls. The BMS terminals may also be used to connect to a home alarm system. Wiring example as shown. Remote Shut-Off Connections Your mini merlin can be integrated with remote devices with an open/close circuit via the Remote Shut-Off volt free switch terminal. This terminal has a factory fitted link installed.

  • Page 11: Auto Reset & Buzzer Switches

    Auto Reset & Buzzer Switches There are two dip-switches on the circuit board. In the event of a power loss – the mini merlin will In the event of a power loss – the mini merlin will need to be reset manually when power is restored.

  • Page 12: Operation

    Installation & Operation Manual Mini Merlin OPERATION First Power Up  Supply 100-120Vac electrical power  Press and hold the touch button for ~3 seconds. The device enters a stabilisation phase for approximately one minute – during this period the device is not yet ready for gas detection.

  • Page 13: Remote Shut Off Screen

    Installation & Operation Manual Mini Merlin Remote Shut Off Screen This message will display if the device is integrated with remote shut off devices such as smoke/ fire alarms. When activated, the device will isolate the gas supply if installed and configured to do so.

  • Page 14: Bump Testing

    Installation & Operation Manual Mini Merlin Bump Testing What is Bump Testing? Bump testing is a term used for checking a gas detector is functioning correctly by exposing it to the target gas. A known concentration of the target gas is applied to the device to trigger an alarm condition and ascertain the detector is working safely.
  • Page 15 Installation & Operation Manual Mini Merlin Notes Rev: 11 08-20...

  • Page 16: Installation Details

    Installation & Operation Manual Mini Merlin INSTALLATION DETAILS Please pass this manual to the system owner / user. Date of Installation: Installation Location: Organisation: Stamp/ Signature of the installer: American Gas Safety LLC Head office: 4500 140th Ave North Suite 101...

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