Home > Companies > SE Controls > Extended Corridor Mechanical Smoke Shaft System

A system to provide smoke and heat extract ventilation in accordance with BS 7346-4 and to comply with Building Regulations. Suitable for commercial and residential applications. CE Marked and compliant to European Regulations.


Tested to EN 12101-2.


The OSLoop Control System continuously monitors all components within the SHEVTEC® system for their status. Should any component device develop a fault then this will be indicated on the relevant manual control point via a yellow LED. Audible warnings can also be initiated. For centralised indication of status and faults (for example in a designated Fire Fighters entrance) the SHEVTEC® Repeater Panel should be used. The OSLoop system includes real-time event logging. This enables the system to indicate when maintenance is required and gives the maintenance engineer full diagnostics if required.


Shaft inlets:

SHEVTEC® dampers and smoke shaft door actuator and door described in U14 products.


SHEVTEC® fans described in U14 products.


  • Manual control points (MCP's): Allow the smoke control system to be manually overridden.
  • Smoke detector: Required to meet Building Regulations. The detectors must solely be used to activate the SHEV.


  • OS Loop coordinator: A modular smoke control system linking between 1 and 64 remotely mounted manual control points (MCP's) via a coordinator. The coordinator contains the mains power conversion electronics which provides the 24 V DC power for operation. It also contains a back up battery supply. Each MCP contains actuator circuitry which also monitors actuator cabling and circuitry for faults. When a fault occurs a signal is went to the coordinator and from there to the remote alarms.
  • OS2 Control panel: Suitable for stand alone systems through to fully networked intelligent SHEV systems with BMS interface. Operates on a mains voltage primary power supply and contains integral fully monitored and intelligent battery back up for secondary power operation.


- SHEVTEC® Repeater Panel:

Provides system status information for each vent within a smoke ventilation system, as described in section U14.

- Smoke shaft floor grille:

Safety grilles to facilitate maintenance access with the smoke shaft can be provided and SE Controls will carry out the structural calculations for the applications required.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
65-10-75/110 Smoke and heat exhaust ventilation system

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



SE Controls


+44 (0)1543 443060

Product reference

Mechanical Smoke Shaft System

Shaft inlets

[SHEVTEC® Damper]
[SHEVTEC® Smoke Shaft Door Actuator and Door]

Shaft construction



SHEVTEC® Powered Extract Fan


[Manual control point (MCP)]
[Open/ close switches]
[Smoke detector]

24 V Controllers

[OS loop coordinator]
[OS2 control panel]


[SHEVTEC® Repeater Panel]
[SHEVTEC® Smoke Shaft Floor Grille]

Manufacturer details

Lancaster House,
Wellington Crescent,
Fradley Park,
Staffordshire, WS13 8RZ
Tel +44 (0)1543 443060
Fax +44 (0)1543 443070
NBS Plus