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December 2020
08/100245/0
Installing the Diffuser
Prepare a hole in the ceiling.
Using the mounting ring as a template, drill 4 holes and fix using the screws provided.
Finally, screw the valve body into the ceiling mounted ring.
Location of the Ventilation Unit
Locating the ventilation unit in a well-ventilated loft space is recommended to ensure sufficient fresh air is available. The unit should
be installed in a position where the air inlet cannot be obstructed.
Ducting should be considered when choosing the location for the ventilation unit. The installation should aim to minimise air
resistance and prevent any leakage in the ducting. Where possible the use of flexible ducting should be minimised. Flexible duct
should not be compressed.
NOTE:
Care should be taken to ensure ducting is as straight and uncompressed as possible with minimal bends. This will
reduce resistance in the air flow path allowing greater performance at lower speed settings thus improving energy
efficiency and reducing noise.
NOTE:
Use of solid duct exclusively may result in increased noise as a result of vibration. A short length of flexible duct
should be used to transition from solid duct to the diffuser.
WARNING: DO NOT install this product in areas where the following may
be present or occur:
•
Corrosive or flammable gases, liquids or vapours.
•
Ambient temperatures are higher than 50 °C or less than -5 °C
•
Possible obstructions which hinder access to or removal of the Fan.
Orientation of the Unit
The unit is designed to be screwed down to a robust impermeable surface horizontally, vertically, or inverted as shown below.
In the vertical position, the outlet must face down
Horizontal position
Ceiling and Rafter Mounted
