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00241 

SEC-B 

V4

 

Installation Instructions 

 
The SEC-B is a gas pressure proving system with options for; electric isolation, gas detection and ventilation 
interlocking.  
 
The system will perform a down stream integrity check ensuring gas tightness before use, close the gas 
solenoid valve in the event of a high-level gas alarm, ventilation failure, low incoming gas pressure or if the 
emergency stop/fire alarm is activated. 
 
It can automatically restart after a power cut and a fire alarm when the option is enabled. It is designed for 
use primarily in boiler rooms.  

 

 

 

Before commencing installation please familiarise yourself to the equipment by reading the comprehensive 
installation instructions. If in doubt then please call 0161 233 0600. Out of hours please call 07894 684080 or 
07843 355163. 
 

 

It is a statutory requirement that this safety system is installed and commissioned 

to the satisfaction of the manufacturer. 

 

 

A commissioning certificate must be issued to the end user along with instructions for the operation of the 
equipment. 
 
As the Manufacturer Medem UK should commission this safety system whereupon a commissioning report 
will be forwarded to the installing agent who should provide a copy to the end user.  
At the point of our commissioning an individual serial number will be attached to the system along with a 24 
help line number. Photos and all relevant information for the installation will then be stored on the Medem 
site database to be accessed in the event of a call on the 24 hour help line. The warranty period for the 
panel and sender unit will then be extended to Ten years.

 

 

• 

Gas Pressure proving. 

• 

Electrical Isolation. (optional) 

• 

Gas Detection .(up to 16 detectors with a power pack) 

• 

Automatic restart after a power cut and fire alarm. 

• 

Fan interlock. (optional) 

• 

5 year warranty  - 10 years when commissioned

 

SEC-B features 

Summary of Contents for SEC-B

Page 1: ...ent that this safety system is installed and commissioned to the satisfaction of the manufacturer A commissioning certificate must be issued to the end user along with instructions for the operation o...

Page 2: ...uttons A and B for engineer functions LED indications Power On green A blind button for displaying gas pressures on the LCD screen Gas Electric red when active to warn of live service Fans running lig...

Page 3: ...s 70 mbar OPTB Auto Restart on power failure and fire alarm activation off by default SP 2 minute delay to the auto restart this enables downstream appliances or flame failure devices to close 17 Fill...

Page 4: ...as detectors 1 8 press A B together to view 9 16 Fire Test Mode Press button B three times When connected to a fire alarm panel using the fire alarm terminal no 13 the system will isolate the gas duri...

Page 5: ...1 Option Headers 18 19 21 20 Fan comm To enable the commissioning of the gas portion of the system before the ventilation interlock is completed you may temporarily disable the interlocking by pressin...

Page 6: ...e the gas detectors own instructions for more guidance SEC B Detector Information VE supply Comm s From either the main panel or an extender Detectors are wired in parallel and can be connected to one...

Page 7: ...een 1m and 3m from the potential source Care should be taken so they are not located close to the edge of a canopy or in direct flow of the supply or extract ventilation For additional information or...

Page 8: ...nnect in parrallel Live feed through the Medem CM2M K2 channel current Monitor fans Fan speed controls Fan live Supply Fire Alarm Requires a volt free NC contact Where using 3 phase fans interlock on...

Page 9: ...sent within the panel IMPORTANT If wired this way a warning notice must be attached to the panel to indicate that there are two separate mains feeds Contactor coil Live feed through switched relay To...

Page 10: ...s fitted the correct way round Note there is no flow through the pressure sender unit it is purely reading the pressures either side of the valve Correct Pressur e Solenoid Never mount the valve such...

Page 11: ...Solenoid coil of the valve should never be mounted below the horizontal Pressure sender unit should never be mounted upside down to protect from water ingress Approx 400mm length INLET PORT OUTLET PO...

Page 12: ...d be wired in series with the EM stop buttons To EM Stop connections in the panel Indicator bar shows when pressed Normal EM Stop Activated Multiple Stop Buttons Single Stop Buttons Resetting indicato...

Page 13: ...er Medem UK will exchange faulty valves for return to the manufacturer 5 Where a Medem UK engineer or another company appointed by Medem UK commission and installed system then that system will carry...

Page 14: ...n the LCD display that all the detectors have been recognised by the panel A recognised detector will appear as CO Carbon Monoxide CM combustible CH Carbon Dioxide OX Oxygen depletion and TP Temperatu...

Page 15: ...sure test If at any point the fans stop running opening the S1 or E1 contact the system will isolate the gas and report fans not running Check that the fans are not only switched on but actually runni...

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