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Merlin 1000BH Gas Proving/Gas Detection System 

 

 

 

Product Data Sheet 

 

 

 

 

S&S Northern Ltd

  

4  

  

 Note: all low voltage connections should be made using a screened cable. To 

 

 avoid electrical interference this should not be in the same conduit as mains 

 

 cable as per the low voltage directive.

 

 Operation Instructions  

 

3.1 

How to turn the system on and off 

1.  Turn the key switch to on position. 

2.  To turn the system off, turn the key switch to off position.  

3.2 

Explanation of LED status 

3.2.1 

Power LED  

When the system is connected to the mains supply, the Red LED of the S&S Logo located in 

the bottom right corner of the panel will illuminate. When no power is present, this LED will not 
light up.  

RED = OK  

OFF = No power to 1000BH, a loose ribbon connection or the fuse may not be intact. 

3.2.2 

Gas on LED  

When the key switch is turned on, the Merlin 1000BH will check the installation for gas leaks. If 

gas proving is successful, the gas valve will 

open and the green ‘Gas On’ LED will illuminate.

  

GREEN = Gas On  

OFF = Gas Off  

3.2.3 

Testing LED  

This LED will illuminate GREEN for approximately 30 seconds when the panel is checking the 

integrity of the gas installation upon start up. GREEN = proving the gas line, do NOT operate 
any appliances  

3.2.4 

Test Fail LED  

Under normal working conditions this LED is off. When the panel detects a gas leak on start-

up, the LED will illuminate AMBER. Gas valve will remain closed.  

OFF = OK  

AMBER = gas proving failed  

3.2.5 

  Pressure Low LED  

Under normal working conditions the LED is off. The LED will illuminate AMBER when 

pressure of the gas supply drops below 12mBar for 10 secs. The gas valve will close.  

OFF = OK  

AMBER = gas supply pressure low.  

3.2.6 

Gas Detector 1/ Gas Detector 2 LED  

Under normal working conditions this LED is off. If the external Merlin detector connected 

detects gas this will show RED and the Gas valve will turn off. 

OFF = OK  

RED = Gas detected.  

3.2.7 

   Heat Detector LED 

   

   Under normal working conditions this LED is off. If the temperature of the boilers reaches 72 

  

   Degrees Celsius or higher (Heat detector required), the LED will show AMBER and the Gas 

  

   valve will turn off.  

   

   OFF = OK  

   

   AMBER = High temperature detected (72 Degrees Celsius or higher) 

Summary of Contents for Merlin 1000BH

Page 1: ...erlin 1000BH Gas Proving Gas Detection System Product Data Sheet S S Northern Ltd 1 Gas Safety Products Merlin 1000BH Gas Proving Gas Detection System Installation operating and maintenance 23 08 2016...

Page 2: ...2 8 Fire Alarm 3 2 9 Heat Detector 3 2 10 12v DC 3 2 11 Internal Buzzer 3 3 Operation Instructions 4 3 1 How to turn the system on and off 4 3 2 Explanation of LED status 4 3 2 1 Power LED 4 3 2 2 Ga...

Page 3: ...oxide or LPG detector If no detector is being used leave the link in between the Other detector types are available 2 5 Gas Pressure Transducer The terminals marked pressure sensor in These wire to th...

Page 4: ...Gas On OFF Gas Off 3 2 3 Testing LED This LED will illuminate GREEN for approximately 30 seconds when the panel is checking the integrity of the gas installation upon start up GREEN proving the gas l...

Page 5: ...s will tell the BMS whether or not 230V is being sent to the solenoid There is a dip switch located on the inside facia of the Merlin 1000BH labelled BMS SEL This is factory set in the off position wh...

Page 6: ...sure transducer Red positive Black negative and Blue IN 6 Remote EM Stop buttons and Fire Alarm input wired in series purchased separately VOLT FREE INPUT 7 BMS output contacts Normally Closed Common...

Page 7: ...0 1257 471 937 www snsnorthern com info snsnorthern com South East Division Tel 44 0 1702 291 725 Fax 44 0 1702 299 148 south snsnorthern com Rev Date Author Description 04 23 08 16 S S Northern BT M...

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