Testing to BS EN 12101

Testing to BS EN 12101-2:2003

In order to be efficient, AOV systems must undergo a series of rigorous tests which adhere to BS EN 12101-2:2003.

These tests typically include cycle testing over many thousands of operations and also testing in a high and low temperature range with no more than a 10% reduction in opening area. The unit will be required to function under snow and wind loads, whilst opening to fire position using both mains and battery power in under 60 seconds.

Any manufacturer that has carried out these tests must provide a Certificate of Conformity supplied by a UKAS accredited body. This details the loadings and temperature ranges the AOV has been subjected to during testing and should be accompanied by a Declaration of Performance.

Thermadome Louvre with polycarbonate blades 3 (2)
Thermadome Louvre Internal-photo (1)

Critical safety product

All of these tests mean that in the event of a fire the AOV system can be relied upon to perform its function and evacuate smoke from the building.

Although it may be possible to connect other types of ventilation rooflights to alarm systems to act as an AOV, this is not permitted under Construction Products Regulations.

Any system that is covered by a harmonised standard, such as BS EN 12101, has to be CE marked and therefore has to have undergone testing in accordance with the standard. Non CE marked units will not have undergone any testing and are likely to fail in the conditions they will be subjected to during a fire, potentially causing serious injury or death.

Combining performance and aesthetics

Typically smoke vent rooflights are not aesthetically pleasing. As a fire safety product, visuals are often overlooked due to the central focus placed upon functionality; actuators tend to be obstructive and create bulky framework.

Unlike many AOV roof lights, Glazing Vision’s CE marked xVent benefits from minimal framework. It is a low profile double glazed unit with a fully insulated lid section, offering superior standards of finish, improved acoustics and thermal performance. The xVent frame is engineered from extruded aluminium and the base frame is thermally broken to avoid condensation and thermal bridging. All of this is achieved using completely hidden hinged mechanisms housed within the base frame.

Thermadome Louvre with solid blades 1

National Domelight Company
Room 205
Basepoint Business Centre
377-399 London Road
GU15 3HL