8.4.2.5 Building integration
MEV design, materials and sitework shall comply with the Technical Requirements, Issues to be taken into account include:
- weathertightness
- fixing of fan units
- fire-stopping.
8.4.2.5.1 Weathertightness#
Proprietary roof terminals should be used to ensure the weathertightness of the roof covering.
8.4.2.5.2 Fixing of fan units#
MEV fan units should only be fixed to parts of the building capable of taking the load. Where MVHR fan units are supported by framed structures, additional components such as noggings may be required to provide a secure fixing point.
Fan units should be located, orientated, and fixed in accordance with the design, using the clips, brackets and fixings recommended by the manufacturer.
The type, size, number, position and fitting tolerance of fixings should be in accordance with the manufacturer’s recommendations.
8.4.2.5.3 Fire-stopping#
The MEV system should not adversely affect the fire performance of the building. Issues to be taken into account include:
- ensuring that the fire requirements of the building are in accordance with relevant Building Regulations
- suitable detailing of components passing through other elements of the building
- location and type of firestops to be used
- integrity of protected stairs and halls
- integrity of walls and floors.
Proprietary fire components should be suitably tested, and specified to take account of the test conditions.
Last updated: 2nd January 2024