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Installation & Operation Manual                                                                                       Merlin GDP4 

 

 

Rev: 9   03-20

 

4  

   Board Overview  

 

 

1.

 

100-240VAC Mains power Input 

2.

 

100-240VAC Gas Solenoid Valve Power Output.  
 

3.

 

24VDC Gas detector power supply (Zone 1) purchased separately.  

4.

 

24VDC Gas detector power supply (zone 2) purchased separately. 

5.

 

24VDC Gas detector power supply (zone 3) purchased separately. 

6.

 

24VDC Gas detector power supply (zone 4) purchased separately. 

 

7.

 

Remote emergency stop buttons (Volt free) purchased separately).  

8.

 

Heat Sensor: Fusible Links (Volt free) purchased separately 

9.

 

Fire panel connection (Volt free) not included. 

10.

 

BMS output contacts. Normally Open, Common and Normally Closed. 

11.

 

24VDC Sounder/ Strobe alarm - purchased separately 
 

12.

 

Switch - BMS Selection & Auto Reset  

13.

 

Switch - Zone 1, 2, 3 & 4 enable/disable  
 

 

Fuse – 3.15A 

 

 

 

 

 

 

 

 

To avoid electrical shock you 

must always isolate the mains 

supply before opening the 

GDP4 panel cover/s. 

Summary of Contents for Merlin GDP4

Page 1: ...nge of detection panels which can be used in many applications such as factories car parks shopping centres and most commonly boiler houses The GDP4 can be used with up to twelve 12 Merlin gas detecto...

Page 2: ...Wiring and Set Up Switch 6 Auto Reset Set Up Switch 7 Zone 1 4 Set Up Switches 7 Factory Set Condition 7 Trouble Shooting 7 Specification 8 OPERATION 9 First Power Up 9 LED Indicator Status 9 Mute Re...

Page 3: ...ensors 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 po...

Page 4: ...24VDC Gas detector power supply zone 4 purchased separately 7 Remote emergency stop buttons Volt free purchased separately 8 Heat Sensor Fusible Links Volt free purchased separately 9 Fire panel conn...

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: ...onnections 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 Bui...

Page 7: ...r is restored Zone 1 4 Set Up Switches There are dip switches located on the GDP4 circuit board labelled ZONE 1 to ZONE 4 This is factory set in the Off position For each of the gas detector zones you...

Page 8: ...Valve Output Voltage 100 240V AC BMS Output 3A Current Consumption 20W max full load Internal Fuse 3 15A Operating Temperature 0 50 C 30 85 RH Non Condensing Audible Alarm Buzzer dB 65 dB 300mm dista...

Page 9: ...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 gas...

Page 10: ...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 detector may visually appear in good order bu...

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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