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Installation, Operation & Maintenance Manual
At S&S Northern, we supply a full range of remote gas detectors including carbon monoxide (CO), natural
gas/methane (NG), hydrogen (H), oxygen (O
our range of Merlin control panels.
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.
DETX-IOM Iss: 7 02-21
MERLIN GAS DETECTOR X
Installation, Operation & Maintenance
Please read this manual carefully and retain for future use.
) and liquid petroleum gas (LPG) that are compatible with
2
Merlin Gas Detector-X
1
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Related Manuals for S&S Northern MERLIN CO DETECTOR X
Summary of Contents for S&S Northern MERLIN CO DETECTOR X
- Page 1 Installation, Operation & Maintenance Manual Merlin Gas Detector-X MERLIN GAS DETECTOR X Installation, Operation & Maintenance Please read this manual carefully and retain for future use. At S&S Northern, we supply a full range of remote gas detectors including carbon monoxide (CO), natural gas/methane (NG), hydrogen (H), oxygen (O ) and liquid petroleum gas (LPG) that are compatible with our range of Merlin control panels.
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Page 2: Table Of Contents
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Contents Important Warning Statements ..............3 Installation ....................4 Planning ........................4 Typical Location and Positioning ................. 4 Typical Installation Arrangement ................. 5 Mounting ........................5 Board Connections Overview ..................6 Wiring your Detector (GDP2X or GDPX+ Control Panel) ..........6 Creating a Detector Chain ................... -
Page 3: Important Warning Statements
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Important Warning Statements Please take the time to thoroughly read this user’s guide which should be retained for future reference. The expected lifetime of gas sensor is 3-10 years upon initial power up dependant on your target gas and environmental factors. -
Page 4: Installation
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Installation Planning Our detectors should be installed in hazardous areas only at risk of gas leaks e.g. over boilers, valves or meters. Take in to account the design of the air flow patterns within the zone area. Detectors should be installed in the correct orientation, as recommended by the manufacturer, and ease of access should be accounted for to allow for any bump tests, recalibration and other forms of maintenance. -
Page 5: Typical Installation Arrangement
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Typical Installation Arrangement The Merlin panel should be located outside of the hazardous area that it is monitoring. Easy accessibility is required both for status observation and alarm purposes. The Gas Detectors are designed around a centralised control panel of which the location also needs to be considered. -
Page 6: Board Connections Overview
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Board Connections Overview All Class 2 wiring is to be installed within flexible tubing to maintain segregation between circuits! If devices are not grounded, they can give false readings or become a safety hazard! For MODBUS communications, a shielded cable is used! Wiring your Detector (GDP2X or GDPX+ Control Panel) 12-24VDC power and Modbus communication data cables are wired to Merlin gas detection panels –... -
Page 7: Creating A Detector Chain
Installation, Operation & Maintenance Manual Merlin Gas Detector-X MODBUS Connection A shielded and twisted 2 or 4 core cable is used to wire the data terminals [D+ & D-). Any cable with similar characteristics can be used to connect all the devices together. The shielding can be of 2 types: braided [mesh of thin conducting wires] or foil (consisting of a thin sheet of metal covering the twisted wires). -
Page 8: Detector Chain Id Switches
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Detector Chain ID Switches When wiring multiple detectors in a chain it is important to identify each and every detector installed for the control panel to receive and display accurate data corresponding with the correct detector type. The ID configuration diagram is printed onto detector boards for quick reference. -
Page 9: Wiring Your Detector (Gdp2 Or Gdp4 Control Panel)
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Wiring your Detector (GDP2 or GDP4 Control Panel) 12-24V power supply via Power Input [+ / -] and GDP panel [GAS DETECTION ZONE] terminal. If you are using our ‘GDP’ range you will need to use the [C/L] terminal as an alarm relay. BMS terminals can be used in conjunction with other external relays that affect other devices and controls such as purge fans... -
Page 10: Factory Set Condition
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Factory Set Condition Buzzer On/Off Switch Chain Termination Resistor Detector ID Switches ID 1 Quick Installation Tips CONNECTION The best way to connect devices in a MODBUS RTU communication is a DAISY CHAIN method. MAXIMUM DISTANCE You may encounter problems when powering gas sensors beyond 100 metres from one control panel, in this instance, contact your supplier. -
Page 11: Operation
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Operation Initial Power-Up (Commissioning) On connecting power, the detector enters ‘sensor stabilisation’ phase for approximately 60 seconds – during this period the screen will display an ‘initialisation’ message indicating that the device is not yet ready for gas detection. -
Page 12: General Maintenance
Installation, Operation & Maintenance Manual Merlin Gas Detector-X General Maintenance Cleaning High concentrations of alcohol found in many products may damage, deteriorate or affect the gas sensing elements – such as; wine; deodorants; stain removers; thinners! Other gases and substances to avoid; Corrosives (i.e. chlorine & hydrogen chloride); Alkali metals; Basic or acidic compounds;... - Page 13 Installation, Operation & Maintenance Manual Merlin Gas Detector-X How often should I Bump Test a detector? Regular bump tests are important to make sure the detector is able to detect a release of gas as early as possible. A bump test usually takes seconds (gas type dependant) and is often completed alongside a scheduled fire alarm test, however the frequency should be determined following a risk assessment by the end user.
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Page 14: Service & Calibration
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Service & Calibration Access to the interior of the detector or control panel, when carrying out any work, must only be conducted by trained personnel. Before carrying out any work ensure local regulations and site procedures are followed. Do not tamper with or in any way disassemble the detector. -
Page 15: Detector Calibration
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Detector Calibration Do not conduct calibration of sensors in conditions outside any recommended ranges. Use the specified calibration gas only and a fixed flow regulator. Always use equipment in accordance with their safety datasheets. Calibration gases must be prepared and mixed to traceable international standards. -
Page 16: Failed Calibration
Installation, Operation & Maintenance Manual Merlin Gas Detector-X How do I Calibrate a Detector Access to the interior of the detector or control panel, when carrying out any work, must only be conducted by trained personnel. Before carrying out any work ensure local regulations and site procedures are followed. Do not tamper with or in any way disassemble the detector. -
Page 17: Gas Sensor Types & Reaction Times
Installation, Operation & Maintenance Manual Merlin Gas Detector-X Gas Sensor Types & Reaction Times The time for gas sensors to react to their target gas will vary dependant on the type of gas detector/gas sensing element. You should always refer to the appropriate specification for information including sensor type and alarm levels i.e. -
Page 18: General Specification
Installation, Operation & Maintenance Manual Merlin Gas Detector-X General Specification General Product: Gas Detector-X Model(s): CO (Carbon Monoxide) NG (Methane/Natural Gas) LPG (Liquid Petroleum Gas) H (Hydrogen) O2 (Oxygen) Indoor, Non-Hazardous Areas (not to be used in potentially explosive atmospheres) Use: For protection against flammable and toxic gas hazards. - Page 19 Installation, Operation & Maintenance Manual Merlin Gas Detector-X Page intentionally left blank. DETX-IOM Iss: 7 02-21...
- Page 20 Installation, Operation & Maintenance Manual Merlin Gas Detector-X Installation Details Please pass this manual to the system owner / user. Date of Installation: Installation Location: Organisation: Stamp/Signature of the installer: We recommend all Merlin gas detection equipment is commissioned by competent/trained engineers to ensure correct installation and operation.
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