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Installation, Operation & Maintenance Manual
OGS supply a range of remote gas detectors including carbon monoxide (CO), natural gas/methane (NG), liquid
petroleum gas (LPG), Carbon Dioxide (CO
panels connecting up to 16 detectors (control panel dependant) per cable run to monitor gas levels/hazards in safe
areas.
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 manual – contact your supplier.
DETX-IOM Iss: 1 01-22
Gas Detector X
Addressable Safe Area Fixed Gas Detector
Installation, Operation & Maintenance
Please read this manual carefully and retain for future use.
) and also oxygen (O
2
) that are compatible with our range of Merlin control
2
Merlin Detector-X
1
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Summary of Contents for OGS Gas Detector X
- Page 1 Installation, Operation & Maintenance Please read this manual carefully and retain for future use. OGS supply a range of remote gas detectors including carbon monoxide (CO), natural gas/methane (NG), liquid petroleum gas (LPG), Carbon Dioxide (CO ) and also oxygen (O...
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Page 2: Table Of Contents
Installation, Operation & Maintenance Manual Merlin Detector-X Contents Important Warning Statements .................. 3 Installation ........................4 Typical Location & Positioning .......................4 Access & Mounting ........................5 Internal Board Overview ........................5 Wiring a Detector (GDP2X or GDPX+ Control Panel) ..............6 Creating a Detector Chain ......................6 Detector ID Switches ........................7 120ohm Termination Resistance ....................7 Wiring a Detector (GDP2 or GDP4 Control Panel) .................8... -
Page 3: Important Warning Statements
At the end of their working life, electrochemical sensors for oxygen and carbon monoxide detectors should be disposed of in an environmentally safe manner. Alternatively they can be securely packaged and returned to OGS clearly marked for disposal. Electrochemical sensors should not be incinerated as this may cause the cell to emit toxic fumes. -
Page 4: Installation
Installation, Operation & Maintenance Manual Merlin Detector-X Installation Typical Location & Positioning Our detectors should be installed in safe 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, and ease of access should be accounted for to allow for any servicing, recalibration and other forms of maintenance. -
Page 5: Access & Mounting
Installation, Operation & Maintenance Manual Merlin Detector-X Access & Mounting Unpack all the parts. The detectors are designed for surface mounting and must be installed by a licensed, insured contractor or competent person. A deeper back enclosure is supplied to accommodate wiring where required. -
Page 6: Wiring A Detector (Gdp2X Or Gdpx+ Control Panel)
Installation, Operation & Maintenance Manual Merlin Detector-X Wiring a Detector (GDP2X or GDPX+ Control Panel) 24vdc power supply from the control panel and communication cables are wired to control panels (GDP2X or GDPX+). Both control panel and detector terminals are marked as [DETECTOR CHAIN + - D+ D-]. [SHEILD WIRE] detector terminals should be used for earthing/grounding and shield wires connected to any Earth/Ground terminal on the control panel. -
Page 7: Detector Id Switches
Installation, Operation & Maintenance Manual Merlin Detector-X Split Detector Chain from Control Panel example. Reversing the [D+] and [D-] connections of any device can lead to the whole system to stop working owing to reverse polarity found on the terminals. In order to avoid this problem, it is recommended that the cable of same colour should be used to connect all [D+] terminals together and similarly cable of same colour to be used to connect all [D-] terminals together. -
Page 8: Wiring A Detector (Gdp2 Or Gdp4 Control Panel)
Installation, Operation & Maintenance Manual Merlin Detector-X Wiring a Detector (GDP2 or GDP4 Control Panel) Power is supplied to a detector via the GDP terminal [+ / -] and using the panel [GAS DETECTION ZONE] terminal. If you are using a GDP panel you will need to use the detector [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 or audible... -
Page 9: Installation Tips
Installation, Operation & Maintenance Manual Merlin Detector-X Installation Tips Wiring detector chains The best way to connect devices in a MODBUS RTU communication is a parallel DAISY CHAIN method. Cable distance You may encounter problems when powering detectors beyond 100 metres from one control panel, in this instance, contact your supplier. -
Page 10: Digital Indication
Installation, Operation & Maintenance Manual Merlin Detector-X Digital Indication Alarm Set Points ▲Rising alarm ▼Falling alarm LEL (Lower Explosive Limit) PPM (Parts per Million) Gas Detector Pre-Alarm Buzzer Alarm State Buzzer Methane/Natural Gas (NG) ▲ 8% LEL ▲ 10% LEL Liquid Petroleum Gas (LPG) ▲... -
Page 11: General Maintenance
Installation, Operation & Maintenance Manual Merlin Detector-X General Maintenance Cleaning Concentrations of alcohol found in many products may damage, deteriorate or affect the gas sensing elements such as; wine; deodorants; stain removers and thinners. Other gases and substances to avoid are corrosives (i.e. chlorine & hydrogen chloride);... -
Page 12: Standard Test Gases
What do I need? Contact your OGS representative for details of suitable bump testing kits and gases. Kits usually consist of a certified gas cylinder or spray. We recommend only using OGS calibration gas kits to ensure correct flow rates meet OGS technical requirements. -
Page 13: Reset Service Message
Installation, Operation & Maintenance Manual Merlin Detector-X STEP 2 Test Detector Access to the interior of the detector, when carrying out any work, must be conducted by a competent person! Ensure you have the correct gas for the device type prior to application. •... - Page 14 Installation, Operation & Maintenance Manual Merlin Detector-X Page intentionally left blank. DETX-IOM Iss: 1 01-22...
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Page 15: Specification
Installation, Operation & Maintenance Manual Merlin Detector-X Specification General Product: Gas Detector-X CO (Carbon Monoxide) NG (Methane/Natural Gas) LPG (Liquid Petroleum Gas) H (Hydrogen) O2 (Oxygen) Model(s): Carbon Dioxide (CO2) Use: Indoor, Safe Areas (not to be used in potentially explosive atmospheres) Green (Safe), Yellow (Special State) &... - Page 16 Installation, Operation & Maintenance Manual Merlin 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 be commissioned by competent/trained engineers to ensure correct installation and operation.
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