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System Settings

 

SEC-Le 

 

ALT 

EST 

GON 

HAL 

 

Low Pressure (Any State) - LP 

OFF 

OFF 

OFF 

OFF 

High Pressure (Any State) - HP 

ON 

OFF 

OFF 

OFF 

Test Fail 

OFF 

ON 

OFF 

OFF 

Fan Fault - FF 

ON 

ON 

OFF 

OFF 

EM Stop - ES 

OFF 

OFF 

ON 

OFF 

Fire Panel Active -FA 

ON 

OFF 

ON 

OFF 

High Alarm (Any State) - HA 

OFF 

ON 

ON 

OFF 

Low Alarm (Any State) - LA 

ON 

ON 

ON 

OFF 

Gas On  State 

OFF 

OFF 

OFF 

ON 

Detector Fault 

ON 

OFF 

OFF 

ON 

Generic Fault (LP,HP,FF,ES,FA,HA 

OFF 

ON 

OFF 

ON 

Key Switch State 

ON 

ON 

OFF 

ON 

Two relays, for connection to a BMS or sounder/Beacon (One status selectable from each relay)  
Max switching 48 volts 1 amp 

 

 

   15. BMS Relay PCB 

   Press button A - 

To display the gas pressures and view the set pressure proving set times. 

   Press button B - 

To display the gas installed gas 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 during an fire alarm. 
 
If for the purposes of a fire test you wish to temporarily disable this interlock the SEC system can be put into a “fire test mode” by 
pressing blind button 

B

 three times in quick succession.  

 
This is a timed feature and will auto clear after 45mins. Press again three times to manually clear and return to normal running.  

A                                 B 

    Blind buttons - engineer features 

Summary of Contents for SEC-Le V4

Page 1: ...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 equipme...

Page 2: ...buttons 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 li...

Page 3: ...age 4 for full details 16 OPTA Over pressure check will isolate gas supply if pressure exceeds 70 mbar 17 Fill prove time for gas pressure proving see page 5 18 Timer adjustment for fan commissioning...

Page 4: ...Max switching 48 volts 1 amp 15 BMS Relay PCB Press button A To display the gas pressures and view the set pressure proving set times Press button B To display the gas installed gas detectors 1 8 pre...

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 Le Detector Information VE supply Comm s From either the main panel or an extender Detectors are wired in parallel and can be connected to on...

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: ...nnel current Monitor fans Fan speed controls Fan live Supply Fire Alarm Requires a volt free NC contact Where using 3 phase fans interlock on a single phase See page nine Earth Connections not shown 0...

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: ...ld 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 indicat...

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: ...CD 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 Temperature Coun...

Page 15: ...ssure 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 runn...

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