Hotspur 5 & 9 Issue 2 December 2017
11
Ventilation Requirements
In order for the stove to perform efficiently and safely there should be an adequate air
supply into the room in which the stove is installed to provide combustion air. This is
particularly necessary in modern houses where drafts have been almost eliminated by
double glazing etc.
Under UK building regulations any appliance over 5kW MUST have a fixed permanent
air vent (see building regulations approved document J for detailed information). The
following information is offered as a basic summary of the information found in Building
Regulations. This information should NOT be used as a substitute to following the full
requirements laid out in Building Regulations approved Document J.
Air Vent Calculation Hotspur 5
For new build properties you will need 5 x 550mm² = 2750mm²
Older properties do not normally need a vent.
Air Vent Calculation Hotspur 9
For new build properties you will need 9 x 550mm² = 4950mm²
Older properties you will need 4 x 550mm² = 2200mm²
There must not be an extractor fan fitted in the same room as the stove as this
can cause the stove to emit fumes into the room. It is necessary to install a wall
vent to provide the necessary combustion air and to prevent the depletion of
oxygen in the room.
Direct External Air Supply (DEAS)
The optional Direct External Air Supply eliminates drafts caused by traditional wall
vents. The DEAS will provide 100% of the operational combustion air.
The appliance has been designed and tested for safe when using a Broseley Fires
supplied DEAS Kit. It is therefore required that only the Broseley Fires DEAS Kit is used
when an external air supply is required.
When fitting the DEAS Kit the following comprehensive installation instructions must be
followed. It is important for the installing engineer to read these installation instructions
before commencing works on a DEAS installation and ensure the instructions for the
DEAS kit are understood as clear and concise.
