AGS Merlin 1250X Installation, Operation & Maintenance Manual

AGS Merlin 1250X Installation, Operation & Maintenance Manual

Gas & ventilation interlock system

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Installation, Operation & Maintenance Manual
Installation, Operation & Maintenance Manual
The Merlin 1250X is a ventilation interlock panel for up to 2 fans. It has built-in current monitoring and is
designed for use with fans up to 18A running current (0.1A minimum) and also has the ability to receive
connections from external current monitors or air pressure differential switches.
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: 1
Merlin 1250X
Gas & Ventilation Interlock System
Intake Fan
Exhaust Fan
Please read this manual carefully and retain for future use.
Merlin1250X

1

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Summary of Contents for AGS Merlin 1250X

  • Page 1 Please read this manual carefully and retain for future use. The Merlin 1250X is a ventilation interlock panel for up to 2 fans. It has built-in current monitoring and is designed for use with fans up to 18A running current (0.1A minimum) and also has the ability to receive connections from external current monitors or air pressure differential switches.
  • Page 2: Table Of Contents

    Installation, Operation & Maintenance Manual Merlin1250X Contents IMPORTANT WARNING STATEMENTS ..............3 INSTALLATION ......................4 Planning ............................4 Mounting ............................. 4 Board Connections ........................5 Board Connections Overview ..................... 5 Access Configuration Settings ....................6 Configuration Settings Explained ....................6 Fan Calibration ..........................
  • Page 3: Important Warning Statements

    Installation, Operation & Maintenance Manual Merlin1250X IMPORTANT WARNING STATEMENTS Please take the time to thoroughly read this user’s guide which should be retained for future reference. It is recommended that this device be commissioned upon installation. Do not apply lighter gas or other aerosols to external gas detectors or monitors – this can cause extreme damage to the gas sensing elements.
  • Page 4: Installation

    The Merlin 1250X is a ventilation interlock panel for up to 2 fans. The Merlin 1250X has built-in current monitoring and is designed for use with fans up to 18A running current (0.1A minimum), it also has the ability to receive connections from external current monitors or air pressure differential switches.
  • Page 5: Board Connections

    Installation, Operation & Maintenance Manual Merlin1250X Board Connections WARNING! To avoid electrical shock you must always isolate the line supply before opening the panel! Take care when making connections to high voltage connectors! Avoid running mains wiring across the circuit board! Any damage attempting to remove the circuit board may void any warranty! Separate different circuits from each other by means of...
  • Page 6: Access Configuration Settings

    Installation, Operation & Maintenance Manual Merlin1250X 5. EXTERNAL CURRENT SENSORS [INTAKE FAN] & [EXHAUST FAN] These terminals are used to receive an input signal from external air pressure switches or external current monitors. These are linked out as a factory setting to represent a closed circuit. If only one fan is being used, the terminal not in use should be left closed! 6.
  • Page 7: Fan Calibration

    Installation, Operation & Maintenance Manual Merlin1250X FUNCTION OPTION Explanation - OFF Combination of fan current monitoring. - ON Select either current monitoring OFF, current monitoring for FANS CM. - INT ONLY both Intake and Exhaust ON or either Intake or Exhaust only. - EXT ONLY If fans are calibrated, this will be set as ‘OK’.
  • Page 8: Specification

    Installation, Operation & Maintenance Manual Merlin1250X Specification Model: 1250X Display 1.8” Screen TFT (located inside) Power Input Voltage 100-120Vac Gas Valve Output Voltage 100-120Vac Single phase AC current monitor calibration range 0.1 – 18 Amps Single phase AC current monitor display 0 - 22Amps Power Consumption 4.6 W (Panel), 5W max (fully loaded)
  • Page 9: Operation

    Installation, Operation & Maintenance Manual Merlin1250X OPERATION First Power Up 1. Supply 100-120Vac power, the ‘Power’ LED on the front of the panel will illuminate. 2. Turn external fans on. 3. Turn the panel key switch on to start the system. 4.
  • Page 10: System Diagnostics

    Installation, Operation & Maintenance Manual Merlin1250X System Diagnostics The panel can display fan current (Amps). To view these diagnostics, carefully remove the front fascia of the panel, to activate screen diagnostics, press either the [OK], [UP] or [DOWN] button. The diagnostic screen is available during; proving status; normal operation; fan fault and pressure low status.
  • Page 11 Installation, Operation & Maintenance Manual Merlin1250X ENGINEERING NOTES – Blank Page Rev: 1...
  • Page 12 Date of Installation: Installation Location: Organisation: Stamp/Signature of the installer: CONTACT US: AGS Head Office Tel: (727) 608-4375 Fax: (727) 538-4237 info@americangassafety.com American Gas Safety is the owner of this document and reserves all rights of modification without prior notice.

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