background image

Installation & Operation Manual  

                                                                                  

Mini Merlin 

 

Rev: 11   09-20 

3  

 

 

IMPORTANT SAFETY INSTRUCTIONS 

 

 

Before any installation, use or maintenance read this manual carefully. 

 

The information contained within this manual should be referenced for typical installation and operation only.  

 

For site specific requirements that may deviate from the information in this guide – contact your supplier.  

 

If this device is used in a manner not specified by the manufacturer, the safety and / or protection provided by 

this device may be impaired. 

 

This device is designed for indoor operation only. 

 

The internal fuse should be replaced only with the same type. Anti-surge fuse 3.15A 250Vac 5x20. 

 

The expected lifetime of gas sensor elements is 5 years upon initial power up. The device will display a message to 

indicate this time and should immediately be replaced. 

 

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

 

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

 

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

sensing elements – Avoid exposure near your device. 

 

This equipment is designed to detect carbon monoxide and natural gas from any source of combustion.  

 

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 methane or carbon monoxide, 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. 

 

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 methane or carbon monoxide from occurring or accumulating. 

 

Actuation of your alarm indicates the presence of dangerous levels of Methane or CO.  

 

Seek fresh air supply and contact your local gas emergency service should you suspect a gas leak. 

 

This device 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

 

 

 

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. 
 
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. 
 
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. 

 

X-Cel House, Chrysalis Way, Langley Bridge, 
Eastwood, Nottinghamshire NG16 3RY

+44 (0) 1773 534555
[email protected]
dmsltd.com

Summary of Contents for MINI MERLIN

Page 1: ... levels of carbon monoxide at the sensor this device can shut off the gas supply via a gas safety valve and or a gas fired appliance This device has additional features for resetting systems as well as audible and visual alarms It can also be integrated with a Building Management System BMS The information contained within this manual should be referenced for typical installation and operation onl...

Page 2: ...oning 6 Mounting 7 Circuit Board Overview 8 Wiring 8 Auto Reset Buzzer Switches 10 Building Management System Integration 10 Specification 10 OPERATION 11 First Power Up 11 Touch Button 11 Device Overview 11 Gas Level Alarms 12 Remote Shut Off Screen 12 End of Life Screen 12 General Maintenance 13 Bump Testing 14 INSTALLATION DETAILS 16 X Cel House Chrysalis Way Langley Bridge Eastwood Nottinghams...

Page 3: ...n 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 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...

Page 4: ...t situation Medium levels Generally between 50ppm to 100ppm This should be cause for concern and should not be ignored or dismissed Low levels Maximum acceptable indoor level of CO is 9ppm Anything above this level may cause possible health effects with long term exposure See the specification table for how your device monitors Carbon Monoxide gas POSSIBLE SOURCES OF CARBON MONOXIDE GAS Inside you...

Page 5: ...xic and associated with being a simple asphyxiator displacing oxygen in the lungs However Methane is extremely combustible Exposure to high levels of Methane can cause Suffocation Loss of consciousness Headache and dizziness Nausea and vomiting Weakness Loss of co ordination Increased breathing rate METHANE GAS LEVELS The LEL Lower Explosive Limit of methane is considered to be 5 BV by volume of a...

Page 6: ...cation they should be located near identified sources of a potential gas leaks pockets where hazardous gas could quickly accumulate and areas of identified consequential risk A 6ft from sources of combustion e g boiler s heaters gas fired appliances etc B 4ft from draft zones and ventilation areas e g windows doorways and A C units etc C 5ft from ground level Recommended heights may vary based on ...

Page 7: ...are pre fractured areas for cable entry and barrier to separate low and high volt connections 4 Mount at 5 feet from ground level and in accordance with any applicable regulations 5 After executing the mounting and connections secure the rear cover Take care when making connections to high voltage connectors Any damage attempting to remove the circuit board may void any warranty Wiring of differen...

Page 8: ...iple appliances Use an external transformer not supplied to close a 24VAC gas solenoid valve that could supply gas to one or more appliances Gas Supply Controlled by 100 240VAC Solenoid Valve Gas Supply Controlled by 24VAC Solenoid Valve We do not recommend installing a gas solenoid valve with standing pilots If you use a gas solenoid valve please note that standing pilots will need to be re lit X...

Page 9: ...ance Multiple appliance limit switches can be wired in series Remote Shut Off Connections Your mini merlin can be integrated with remote devices with an open close circuit via the Remote Shut Off volt free switch terminal This terminal has a factory fitted link installed This terminal is normally closed and will alarm when energised open isolating the gas supply When using this input only the main...

Page 10: ...ntacts operating and external relay for multiple appliance shut down and generating status signals for a BMS system Specification Product Mini Merlin Version CH4CO Display 1 8 TFT Thin Film Transistor Screen Brightness Non adjustable Initial Stabilisation Time 60 Seconds approx Power Input Voltage 100 240Vac 50 60Hz Valve Output Voltage 100 240Vac 50 60Hz Fuse Anti Surge 3 15A 250Vac Current Consu...

Page 11: ...p automatically when electrical power is supplied Reset the device To reset after an alarm press the touch button once Test device outputs Press and hold for 3 seconds during normal operation to test screen colouration audible buzzer alarm and gas BMS relay This test only proves that the device will operate and activate connections as intended in the event of dangerous levels of gas being detected...

Page 12: ...mote shut off devices such as smoke fire alarms When activated the device will isolate the gas supply if configured to do so End of Life Screen This message indicates that the devices gas sensing elements have reached their expected operational lifecycle No gas levels will be displayed Contact your supplier and replace the unit immediately The expected lifecycle may vary depending on the environme...

Page 13: ...resheners hair spray paint or other aerosols near the device NEVER paint the device Paint will seal vents and interfere with the device High concentrations of alcohol found in many products may damage deteriorate or affect the gas sensing elements such as wine deodorants stain removers thinners etc Other gases and substances to avoid Corrosives i e chlorine hydrogen chloride Alkali metals Basic or...

Page 14: ...table 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 user Peace of mind that the system does actually detect the gas in question Allows the site to practice safe operations in a similar manner to the fire system Early indication of any issues How Often Regular bump tests are important to make sure the detector i...

Page 15: ...Installation Operation Manual Mini Merlin Rev 11 09 20 15 Notes X Cel House Chrysalis Way Langley Bridge Eastwood Nottinghamshire NG16 3RY 44 0 1773 534555 sales dmsltd com dmsltd com ...

Page 16: ...ION DETAILS Please pass this manual to the system owner user Date of Installation Installation Location Organisation Stamp Signature of the installer X Cel House Chrysalis Way Langley Bridge Eastwood Nottinghamshire NG16 3RY 44 0 1773 534555 sales dmsltd com dmsltd com ...

Reviews: