Deal Electrical  > Ventilation > Information on Product Terms


Axial and Centrifugal FansAxial and Centrifugal Fans
Axial Fans are suitable for wall, window and roof applications where they can extract directly to the outside.

Centrifugal Fans are pressure developing fans, capable of overcoming the resistance encountered in a ducted system. This is particularly useful in applications such as internal toilets, bathrooms or washrooms where there is no direct access to the outside.
 




Condensation Control Fans...Condensation Control Fans...
are designed to alleviate condensation problems in kitchens and bathrooms whether domestic or commercial. Not only is condensation unhealthy, but it can also cause structural damage by encouraging mould, wood rot, damp and decor deterioration. Always check that any apparent problems are caused by condensation and are not the result of another form of dampness i.e. rising damp or rain penetration 


Bathroom Fans operating on 12 Volts



These fans operate on 12v, supplied by a transformer fitted outside the bathroom. Bath and shower rooms are areas of increased electrical hazard. When fitting ventilation products in Zones 1 and 2 of a bath or shower room, an ingress protection rating of IPX4 is required, in accordance with the requirements of the IEE Wiring Regulations (16th Edition) and BS7671:2001.

Zone 1 may best be described as the area immediately bounded by your bath or shower cubicle to a height of 2.25m, whilst Zone 2 is best described as the area extending 0.60m from the extremities of your bath or shower cubicle, also to a height of 2.25m. However, for clarification of these terms and the requirements applicable for your particular installation, you should consult the classification of zones in BS7671:2001 as highlighted in the Xpelair catalogue. The particular page in question is available in pdf format by checking the link below.
 

Bathroom Zoning

Inline or Duct Fans...
are installed 'inline' within a run of duct or hose and can be supplied with or without a delay or overrun timer. 


Inline or Duct Fans...


Timer, PIR Sensor and Humidity FansTimer, PIR Sensor and Humidity Fans
Timer fans are supplied with a delay timer that keeps the fan operating for a set period, for example once lights have been turned off in a toilet or bathroom.

PIR Sensor Fans are operated by detecting the presence of body heat in a room and are generally supplied with a delay timer.

Humidity Fans are operated automatically by a sensor generally adjustable between 50 - 90% RH
 




SELV...
or Safety Extra Low Voltage - generally 12v 50Hz AC - for use in Zone 1 and Zone 2 areas of bathrooms, shower rooms and other relevant areas where electrical safety is of concern 


SELV...


Deal Electrical  > Ventilation > Information on Product Terms

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