MORI WMF 100-E – Extract Weatherproof Subfloor Ventilation Fan – Elta
£242.95 ex. VAT
MORI WMF 100-E – Extract Weatherproof Subfloor Ventilation Fan – Elta
The MORI WMF is a weatherproof fan unit for use when an easily accessed, externally mountable, continuously running ventilation fan is required e.g. to provide subfloor ventilation.
Many subfloor spaces have insufficient natural ventilation with the only option to provide some form of mechanical ventilation to the space. The MORI WMF was specifically designed for such applications.
The combination of wide airflows and various control modes provides the sub-floor ventilation system designer with more choice and flexibility.
Features and Benefits
- Unique weatherproof design allowing the fan to be mounted outside making installation and maintenance easier than with subfloor mounted fans.
- Low energy fan/motor assembly with typical electrical running cost under £9 per year for continuous operation.
- Designed to provide: Continuous fan operation at an adjustable trickle speed, Adjustable Boost speed activated by an external switch (where fitted), Extract Ventilation
The integral controls provided as standard allow for the fan to be set at the installation stage to operate at a trickle speed/airflow. When connected to a boost switch, on closure of the boost switch, the fan will run at a determined speed set internally within the fan at set up; when the boost switch is open the fan will revert to trickle speed.
For example: A 40m² subfloor with a height of 0.6m (24m³) will require and extraction rate of 6.6l/s to achieve 1 air change per hour. This requires the WMF to be set to speed setting 1, extract rate of 7l/s.
Units available with polyester powder coated matt / 30% gloss finish front cover/grille in 3 different colours as follows:
Radon
When natural ventilation under a suspended floor is inadequate to reduce the radon level, active under-floor ventilation can be installed.
A fan is used to either continuously blow air into or extract air from the under-floor space. Both ways can be successful and it is difficult to know which will work best. It is usual to try one way and then retest. If radon levels are still high, the fan can be reversed.
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Brand
Elta