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Installation, Operation & Maintenance Manual                                                                  Merlin Detector i-S 

 

 

 Iss: 1  170322 

8  

Audible Buzzer Switch 

There is a switch on the detector board identified as [Buzzer On/Off]. 
The detector can be configured to have an audible alarm or not when gas levels reach the alarm set points. The alarm 

will continuously sound 

 there are no provisions to silence the alarm, gas levels must drop to a safe value for the 

alarm to stop. 

 

Factory Set Condition 

 

Detectors are shipped pre-calibrated and configured. 
 

Buzzer On/Off Switch 

On  

Alarm Relay Setting Switch 

On 

CO2 Selection  

Pre-Alarm (800ppm) / Alarm (1000ppm) / 0-2000ppm 0-10V Output Range 

 

 

 

 

Operation 

Initial Power Up 

On connecting power, the detector enters a warmup phase for approximately 60 seconds 

 during this period, your 

device not yet ready for operation.  

  OK                         Pre-Alarm                    Alarm 
 
 
 
 
 
 
 
 
 
 
 

 

Latched Relay Alarm 

 
The detector will indicate a red dot on the screen when the alarm relay has latched. 
The alarm buzzer will beep every 10 seconds to alert the user that the detector entered an 
alarm state. To reset the Detector, press and hold the touch button for ~3 seconds. 
 
 

 
 

Summary of Contents for Merlin Detector i-S

Page 1: ...170322 1 Merlin Gas Detector i S Installation Operation Maintenance Please read this manual carefully and retain for future use For specific requirements that may deviate from the information in this...

Page 2: ...Power Input 6 Wiring Alarm Relays 7 Alarm Relay Setting Switch Latch On Off 7 Wiring 0 10V Analogue Output 7 CO2 Selection Switches 7 Audible Buzzer Switch 8 Factory Set Condition 8 Operation 8 Initia...

Page 3: ...nufacturer 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...

Page 4: ...is also relevant to toxic gas detection Recommended heights may vary based on air flow and temperature conditions in addition to the proposed application and location Locations for detectors will var...

Page 5: ...wo gang electrical box Restrain the hazardous live wiring from accidental loosening to prevent wires from moving after installation and touching parts of opposite polarity or at low voltages Isolate t...

Page 6: ...d any warranty Wiring Power Input Standalone Power 12 24V power inputs can be either AC or DC Terminals are pluggable type to ease connections Merlin GDP Power Connection Power is supplied via the GDP...

Page 7: ...a red dot on the screen when the alarm relay has latched The alarm will beep every 10 seconds to alert the user that the detector entered an alarm state To reset the Detector press and hold the touch...

Page 8: ...tors are shipped pre calibrated and configured Buzzer On Off Switch On Alarm Relay Setting Switch On CO2 Selection Pre Alarm 800ppm Alarm 1000ppm 0 2000ppm 0 10V Output Range Operation Initial Power U...

Page 9: ...rly using a slightly damp cloth Never use detergents or solvents to clean your device Never spray air fresheners hair spray paint or other aerosols near the device Never paint the device Paint will se...

Page 10: ...uld always be given to any applicable national local law and industry codes Generally the gas concentration should be greater than the alarm threshold of the device Always remove the regulator valve a...

Page 11: ...Evaluated Operating 10 50 C 20 90 RH non condensing Storage 0 50 C 30 80 RH no condensation Altitude Rating 2000m Wiring Typical Min 2 5mm2 75 C min Tinned copper Approvals Electrical Safety and Elec...

Page 12: ...om any unforeseen damage caused by transit installation Every effort is made to ensure the accuracy of this document however S S Northern can assume no responsibility for any errors or omissions in th...

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