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Installation & Operation Manual                                                                                        Merlin 2000S 

 

 

 

 

2000S

 

IOM

 

Rev: 10    07-20

 

 

 

 

 

Merlin 2000S 

Gas Proving and Ventilation Interlock System 

 

 

 

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Installation & Operation Manual 

Please read this manual carefully and retain for future use. 

 

 

This panel is designed for use when the kitchen appliances do not have flame failure devices 
fitted, therefore gas proving is a requirement. 
The Merlin 2000S system acts as an interlock between the ventilation system and the gas 
solenoid valve. The system is compatible with both current monitors and air pressure 
differential switches in order to interlock with up to 4 fans. 

 

 

Summary of Contents for Merlin 2000S

Page 1: ...retain for future use This panel is designed for use when the kitchen appliances do not have flame failure devices fitted therefore gas proving is a requirement The Merlin 2000S system acts as an inte...

Page 2: ...Mounting 3 Typical Installation Arrangement 4 Terminal Connections 4 Switch Settings 6 Specification 7 OPERATION 8 First Power Up 8 Emergency Shut Off Button 8 LED Indicators 8 Servicing General Main...

Page 3: ...open the gas solenoid valve If the fans should fail the fan fail LED on the panel will illuminate and the gas solenoid will close The Merlin 2000S can work in conjunction with carbon dioxide natural g...

Page 4: ...ied from the VALVE OUT connector using a 3 core cable can be connected to a gas solenoid valve which can shut the gas supply on alarm status Pressure sensors should be screwed to the downstream port o...

Page 5: ...Red Black Blue IN The sensor will monitor the gas supply pressure and if pressure drops below 12mbar the gas valve will close as this could mean a gas leak is present The pressure sensor operating pre...

Page 6: ...various DIP switches on the front circuit board that can be adjusted to configure your system as per the following Auto Reset There is a switch located on the circuit board labelled AUTO RESET OFF Whe...

Page 7: ...n series with any remote emergency shut off buttons If there are no remote emergency shut off buttons being installed wire this directly to the terminal marked EM REMOTE Gas Fill Time and Prove Time F...

Page 8: ...on the Merlin 2000S will open the gas valve and the Gas On LED will illuminate ON Gas On OFF Gas Off Testing This LED will illuminate for approximately 30 seconds when the panel is checking the integr...

Page 9: ...external Merlin detector connected detects high levels of gas this LED will illuminate and the Gas valve will turn off OFF OK ON Gas detected CO2 High Under normal working conditions this LED is off...

Page 10: ...safely If the bump test results are not within the acceptable range the gas detector must not be used until a full calibration has been conducted Bump testing has a number of benefits for the end use...

Page 11: ...pering 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 aris...

Page 12: ...Installation Location Organisation Stamp Signature of the installer 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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