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Installation & Operation Manual                                                                                       Merlin GDP2 

 

 

Rev: 09   01-20

 

3  

INSTALLATION 

   Planning 

 

The Merlin GDP2 is a two zone gas detection panel which can be used in many applications 
such as factories, car parks, shopping centres and most commonly - boiler houses. 
 
It can be used with up to eight Merlin gas detectors for monitoring and detecting gas including 
carbon monoxide, liquid petroleum gas and methane.  
 
The GDP2 system can be integrated with, but not limited to, a BMS (building management 
system) a fire panel, external alarms and remote emergency shut-off buttons

.  

 

 

Locations for detectors will vary based on the intended application and target gas, they should 
be located near identified sources of a potential gas leaks/ pockets where hazardous gas 
could quickly accumulate and areas of identified consequential risk. 

 

The composition 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 in addition to the proposed application and location – this is 
particularly apparent with oxygen depletion sensors, and the target gas that they are used for. 

 

      Fixing 

 

Unpack all the parts! 

 

1.

 

Carefully remove the front cover and board from the unit by unscrewing the four bolts 
located at each corner. To do this – use the socket wrench provided. 
 

2.

 

Mark the four screw holes located on the back of the enclosure to the wall. Ensure 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. 

 

 

Please refer to your detector manual for important information regarding coverage, location 

and positioning including areas and conditions to avoid. 

 

 

Be careful when creating access for cables – Damage to boards will void any warranty. 

 

Summary of Contents for Merlin GDP2

Page 1: ...range of detection panels which can be used in many applications such as factories car parks shopping centres and most commonly boiler houses The GDP2 can be used with up to eight Merlin gas detector...

Page 2: ...Wiring and Set Up Switch 6 Auto Reset Set Up Switch 7 Zone 1 Zone 2 Set Up Switch 7 Factory Set Condition 7 Trouble Shooting 7 Specification 8 OPERATION 9 First Power Up 9 LED Indicator Status 9 Mute...

Page 3: ...nsors 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 poi...

Page 4: ...ly 5 Remote emergency stop buttons Volt free purchased separately 6 Heat Sensor Fusible Links Volt free purchased separately 7 Fire panel connection Volt free not included 8 BMS output contacts Normal...

Page 5: ...from the GAS VALVE connector using a 3 core cable can be connected to a gas solenoid valve which can shut the gas supply on alarm status Refer to your valve manual for more information and wiring GAS...

Page 6: ...connections for an external sounder alarm strobe lighting to activate on alarm Refer to your sounder strobe manual for wiring BMS Wiring and Set Up Switch Connections are available on the board for Bu...

Page 7: ...tart when power is restored Zone 1 Zone 2 Set Up Switch There are dip switches located on the GDP2 circuit board labelled ZONE 1 ZONE 2 This is factory set in the Off position For each of the gas dete...

Page 8: ...alve Output Voltage 100 240V AC Current Consumption 20W max full load Internal Fuse 3 15A Operating Temperature 0 40 C 0 95 RH Non Condensing Audible Alarm Buzzer dB 65 dB 300mm distance in quiet cond...

Page 9: ...is unsuccessful the relevant zone LED light will illuminate to indicate a fault EM Stop If an emergency shut off button either remote or on the panel is pressed the LED will illuminate AMBER and the...

Page 10: ...y by exposing it to the target gas A known concentration of the target gas is applied to the sensor to trigger an alarm condition and ascertain the detector is working safely Why is it important A det...

Page 11: ...product will be free of defects in material and workmanship for a period of three 3 years from date of purchase The manufacturer s liability hereunder is limited to replacement of the product with rep...

Page 12: ...on Location Organisation Stamp Signature of the installer Contact Us S S Northern Head Office Tel 44 0 1257 470 983 Fax 44 0 1257 471 937 www snsnorthern com info snsnorthern com South East Division T...

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