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Installation & Operation Manual                                                                                       Merlin GDP4 

 

 

Rev: 9   03-20

 

11  

IMPORTANT WARNING STATEMENTS 

 
Please take the time to thoroughly read this user’s guide which should be retained for future reference. 

 

 

It is recommended that this device be commissioned upon installation and serviced at least annually. 

 
Do not apply lighter gas or other aerosols to detectors – this will cause extreme damage to the gas sensing elements. 

 
High concentrations of alcohol found in many products may damage, deteriorate or affect the gas sensing elements 

of the detectors – Avoid exposure near your devices. 

 

This device is designed to detect the gas in the designated zone area from any source of combustion or dangerous 

level. It is NOT designed to detect smoke, fire or other gases and should NOT be used as such. 

 
This device provides early warning of the presence of gas, usually before a healthy adult would experience symptoms. 

This early warning is possible provided your alarm is located, installed and maintained as described in this guide. 

 
Never ignore your device when in alarm. Actuation of your alarm indicates the presence of an error or significant issue 

that requires immediate attention. 

 
This device requires a continual supply of electrical power – it will not work without power. 
 

This device should not be used to substitute proper installation, use and/or maintenance of fuel burning appliances 

including appropriate ventilation and exhaust systems. 

 
This device does not prevent dangerous gasses from occurring or accumulating. 

 
This unit may not fully safeguard individuals with specific medical conditions. If in doubt, consult a doctor/physician. 
 

Your product should reach you in perfect condition, if you suspect it is damaged, contact your supplier

 

   

Manufacturer’s Warranty 

 

3 Year Manufacturer’s Warranty 

 
Warranty coverage:
 

The manufacturer warrants to the original consumer purchaser, that this 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 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 but not limited to the implied warranties of description, 

merchantability  and  intended  operational  purpose,  are  limited  in  duration  to  the  above  warranty  period.  In  no  event  shall  the 
manufacturer be liable for loss of use of this product or for any indirect, special, incidental or consequential damages, or costs, or expenses 
incurred by the consumer or any other user  of  this product,  whether  due to a breach of contract,  negligence, strict liability in  tort  or 
otherwise. The  manufacturer shall  have  no liability for any personal  injury, property damage or any special, incidental, contingent or 
consequential damage of any kind resulting from gas leakage, fire or explosion. This warranty does not affect your statutory rights.

 

 
Warranty Performance:
 

During the above warranty period, your product will be replaced with a comparable product if the defective 

product is returned together with proof of purchase date. The replacement product will be in warranty for the remainder of the original 
warranty period or for six months – whichever is the greatest.  
 

 
 
 
Information on waste disposal for consumers of electrical & electronic equipment.  

 

When this product has reached the end of its life it must be treated as Waste Electrical & Electronics Equipment (WEEE).  
Any WEEE marked products must not be mixed with general household waste, but kept separate for the treatment, recovery 
and recycling of the materials used. Please contact your supplier or local authority for details of recycling schemes in your 
area. 

 

 

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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