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Installation & Operation Manual Merlin GDPX+

GDPXPLUS - IOM Iss: 8 02-21

12

Specification

Product:

Gas Detection Panel

Model:

GDPX+

Display

4.3” Touch Screen TFT

Power Input Voltage

100-240V AC

Gas Valve Output Voltage

100-240V AC

Electrical Contactor Output Voltage

100-240V AC

BMS Max Output

3A

BMS Modbus protocol

RTU

Current Consumption

48W max (fully loaded)

Internal Fuse

3.15A

Operating Temperature

0 – 50°C (32 – 122°F) 30-85%RH Non-Condensing

Audible Alarm Buzzer dB

65 dB (300mm distance in quiet conditions)

Pressure Sensor Operating Pressure

0 - 100mbar

Wire ratings:

18AWG min

Internet connection

Ethernet (RJ45)

Housing Material

Polylac PA-765

Flame Rating

UL 94

Approvals

CE, RoHS

O/All Dimensions (H x W x D) mm

180 x 255 x 77mm

We recommend all Merlin gas detection equipment is commissioned by competent/trained engineers to
ensure correct installation and operation.
The Merlin range of gas detectors are optimum calibrated when manufactured. However, we strongly
recommend the detectors response and fault conditions are tested and validated once installed. This will
ensure the equipment is performing as intended and free from unforeseen damage caused by
transit/installation.

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Содержание MERLIN GDPX+

Страница 1: ...cations such as factories car parks shopping centres and most commonly for this model boiler houses The GDPX can be used with up to 16 Merlin gas detectors sold separately for monitoring and detecting gas including carbon monoxide liquid petroleum gas and methane The information contained within this manual should be referenced for typical installation and operation only For specific requirements ...

Страница 2: ...n Settings 10 Settings Menu 10 Settings Options Explained 10 Factory Set Condition 11 Connecting to the Internet 11 Trouble Shooting 11 Specification 12 Operation 13 First Power Up 13 Main Screen 13 Zone Screens 13 Diagnostic Screen 14 Fire Alarm Bypass 14 Alarm Messages 14 Alarm Message List 15 General Maintenance 16 Cleaning 16 Manual Circuit Simulation Test 16 Bump Test Gas Response Check 16 Se...

Страница 3: ...of the product with repaired product at the discretion of the manufacture This warranty is void if the product has been damaged by accident unreasonable use neglect tampering or other causes not arising from defects in material or workmanship This warranty extends to the original consumer purchaser of the product only Warranty disclaimers Any implied warranties arising out of this sale including b...

Страница 4: ...ion of the target gas and its density relative to air are used as the basis for any recommended height of sensors Generally the installation height of a sensor for a heavy gas such as propane would be close to the lowest point in the area and for a light gas such as methane would be close to the highest point in the area Any recommended heights may vary based on air flow and temperature conditions...

Страница 5: ...re the wall surface is flat to prevent base distortion 3 After executing the mounting and the connections replace the front cover and insert the security caps over the four bolts Board Connections Diagram Be careful when creating access for cables Damage to boards will void any warranty Any damage attempting to remove the circuit board parts may void any warranty Wiring of different circuits shall...

Страница 6: ...or Building Management Systems These are volt free connections This is a relay that changes state in alarm or when the gas is on off and can be used in conjunction with the 24V DC output and other external relays that affect other devices and controls such as purge fans and audible alarms etc PRESSURE SENSOR The pressure sensor is wired to the PRESSURE SENSOR connector and screwed into the downstr...

Страница 7: ...BMS Modbus Termination Switch on the board may help the quality of the data signal when turned on at the last and or first device SOUNDER STROBE There are connections for an external sounder alarm strobe lighting to activate on alarm 24V DC OUTPUT This is a permanent 24V DC power output for external auxiliary devices Max output 200mA INPUT 1 INPUT 2 These terminals are connections for selectable e...

Страница 8: ...end of a chain 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 One example of such cable is BELDEN 3082A If you are encoun...

Страница 9: ...cted to receive and display accurate data We recommend a plan map and or marking the detector enclosures detailing ID and location 120ohm Termination Resistance Signal communication issues may occur where the bus length is too long high baud rates are used or signal reflections are occurring To avoid this terminating at each end of a chain may help the quality of the data signal by turning on the ...

Страница 10: ...n Press the blue option box or press and hold When changes have been made turn the SETTINGS switch OFF and the system will automatically restart Settings Options Explained FUNCTION OPTION Explanation BMS relay ON OFF for Gas Error Gas changes relay state with gas valve status only Error changes relay state upon all alarm messages Auto Start ON OFF In the event of a power loss the GDPX will restart...

Страница 11: ... Screen Brightness 100 INPUT 1 name FAN BMS relay ON OFF for Gas INPUT 2 name FAN Auto Start OFF FAB timeout 30 min Modbus Address 1 Fill time 5 sec Modbus Baud Rate 19200 Prove time 30 sec FAB Auto Reset OFF Connecting to the Internet Simply connect your LAN cable into the LAN cable port on the GDPX if fitted Trouble Shooting Fault Possible Cause Correction Detector not responding o Incorrect wir...

Страница 12: ...quiet conditions Pressure Sensor Operating Pressure 0 100mbar Wire ratings 18AWG min Internet connection Ethernet RJ45 Housing Material Polylac PA 765 Flame Rating UL 94 Approvals CE RoHS O All Dimensions H x W x D mm 180 x 255 x 77mm We recommend all Merlin gas detection equipment is commissioned by competent trained engineers to ensure correct installation and operation The Merlin range of gas d...

Страница 13: ...is on or off detectors sold separately ZONE STATUS EXPLANATION OK o Gas levels are safe o No error conditions ALERT o Detector s are in Pre Alarm status o Detector s require service o Detector gas sensor s end of life ALARM o Dangerous gas levels detected Gas is shut off o Detector gas sensor fault or detector s disconnected Gas is shut off DISABLED o No detector signals are received from the zone...

Страница 14: ...d to confirm the action prior to activation The FAB feature will be shown on screen when enabled and timeout at the end of the pre selected time of 15 30 or 45 minutes see settings You can manually disable the FAB by pressing the blue option box to OFF on the diagnostic screen Alarm Messages The GDPX will display messages when in alarm the messages are prompted from external devices that have been...

Страница 15: ...ilence the audible alarm buzzer Investigate and rectify the issue before RESETTING the panel PROVING TEST FAIL Gas proving has failed test at start up Pressing MUTE on the GDPX will silence the audible alarm buzzer Investigate and rectify the issue before RESETTING the panel INPUT 1 INPUT 2 Alarm messages from terminals INPUT 1 and INPUT 2 will depend on the name selected in the settings menu For ...

Страница 16: ...ll simulate an open circuit to ensure configured systems outputs alarms indications and other external devices operate as intended in response to gas When the test button is released the test sequence will terminate and return to normal operation Bump Test Gas Response Check What is a Gas Response Check Response checks are often referred to as a BUMP TEST Bump tests are important to make sure a de...

Страница 17: ...s non flammable and non toxic however they do contain gas under pressure and may explode if heated to extreme temperatures and cause asphyxiation in high concentrations How do I conduct a Bump Test 1 Ensure you have the correct gas for the device type prior to application 2 Screw and seal the regulator valve into the gas cylinder outlet 3 Once sealed the regulator pressure gauge will indicate cyli...

Страница 18: ...ng this time This message prompts a recommended service and calibration of the gas sensor to ensure operational accuracy When Merlin gas detector s display the service message the GDPX panel will show SERVICE on the status screen The GDPX will still operate as intended and if any dangerous gas levels are detected your GDPX will show the detector ID in alarm in the top left hand corner It is recomm...

Страница 19: ... Regular gas sensor recalibration is important to prolong the operational life and make sure the detector is able to detect a concentration of gas as accurately and early as possible Typical accuracy of gas measurement is within 10 of the detected concentration How often shall I recalibrate a detector Calibration should coincide with the annual service message that appears on the detector after ea...

Страница 20: ...ut the Cal1 header to enter calibration mode during the initial warm up period b Offer up the applicator hose cone to the gas sensor c Open the valve regulator to allow the gas to be delivered at a pre set flow rate d The screen will display a SUCCESSFUL text when the calibration is complete e Remove applicator hose cone and turn the gas cylinder regulator valve off f On the control panel exit Ser...

Страница 21: ... exposure to the target gas poisons or inhibitors 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 all detectors can be securely packaged and returned to S S Northern clearly marked for disposal Electrochemical sensors should not be incinerated as this may cause the cell to emit t...

Страница 22: ...Installation Operation Manual Merlin GDPX GDPXPLUS IOM Iss 8 02 21 22 Service Record Date Device ID Gas Pass Sign ...

Страница 23: ...Installation Operation Manual Merlin GDPX GDPXPLUS IOM Iss 8 02 21 23 Date Device ID Gas Pass Sign ...

Страница 24: ... gas detectors are optimum calibrated when manufactured However we strongly recommend the detectors response and fault conditions are tested and validated once installed This will ensure the equipment is performing as intended and free from unforeseen damage caused by transit installation S S Northern Head Office Tel 44 0 1257 470 983 Fax 44 0 1257 471 937 www snsnorthern com info snsnorthern com ...

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