Smoke Control & Ventilation

Maclec Ltd offers a specialist smoke control service in all sectors industrial, commercial, student accommodation, housing, carparks, healthcare, retail, leisure transport, workplace, home-living and education.

Mechanical Systems (MSVS)

MSVS systems act as a depressurization system, upon fire/smoke detection, the lobby/area protected will have an AOV which opens into a formed shaft. Incorporated in the system will be duty and standby extract fans, they will extract any smoke/heat from that area to create a smoke-free area for the occupants to escape and the fire service to tackle the fire.

As its a depressurised system there will be inlet air (makeup air) to create an airflow, this usually achieved via an AOV on the top of a stairwell or an inlet fan

 
 

Natural Ventilation Systems

Natural ventilation systems are an alternative to an MSVS system – this system works by creating 1.5m sq opening in the area that needs protection. This will create the chimney effect by drawing smoke into the shaft and out int the atmosphere.

Openings can comprise of AOVs into a shaft, window actuators AOV on a facade of the buildings to marry with architecture are designed to detailed specifications, top of stairswells or using chaindrives to open exsiting windows.

 

Mechanical Service

Mactec Ltd also offer a mechanical service our installers who specialise in various fields of mechanical installs, these include:

  • Smoke/Fire dampers

  • Ventilation/Ductwork

  • Fan sets/Jet fans

  • Smoke curtains

  • AOVs

 

Car Park Ventilation

Maclec Ltd are specialists in car park installations. Car park systems are designed to extract pollutants from vehicles and extract any smoke to assist the fire service in the event of a fire.

Smoke, CO2 and NO2 detectors are used to monitor and detect the harmful pollutants. Once detected we use a wide range of extract/jet fans in the form of induction and impulse fans to clear the area and create the correct amount of air changes that document B of the building requirements requires. The recommendations are 6 air changes per hour for day to day ventilation on all levels and 10 air changes per hour on the fire level floor.

 

Corridor, Environmental Systems

Corridor/environmental systems are designed an efficient and cost-effective solution by integrating the smoke ventilation system where possible. Again, the use of AOVs can be used along with thermostats venting hot air from common corridors and stairwells reducing temperature to create ambient zones.