Jetmaster 18f, Инструкции по установке, эксплуатации и обслуживанию

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11
Air Supply
All fires require a supply of air to support combustion and to allow the chimney to draw correctly.
Air starvation will result in poor flue draw and smokiness in the room.
All installations will require a permanent dedicated air supply for the fire of at least 5.5cm2 per kW of rated heat
output over 5kW. The size of air supply duct or ducts recommended for each fire is shown in the installation
data table.
An air supply may be required in homes which have high levels of air tightness even if the fire output is 5kW or
less.
The Building Regulations Document J and L must be taken into account when providing ventilation for
the fire.
Newly constructed houses, especially those using double-glazing and employing modern draught control
techniques, will need careful planning of air entry.
Extractors or fans when operated in the same room or adjoining room of the fire may cause problems.
If there is a fan or extractor fitted in the property then allowance for additional air may be required. See
commissioning section.
If there is more than one appliance in the property then each appliance must be supplied with adequate
combustion air and ventilation so that all the appliances can operate simultaneously.
Air Supplied from Room
Bring air in to the room close to the fire. The ideal position is just to the sides of the fireplace opening as shown.
It can be split and brought up in two positions if required, one each side of the fireplace opening.
Careful positioning of the vents is essential so that they are not liable to become blocked and cause cold
draughts.
Where possible, draw air from two walls at right angles and duct to a mixing chamber beneath the floor before
it enters the room. This will reduce the influence of strong winds on the supply of air. Where an existing floor
is solid, vents may have to be provided through the walls in a manner, which achieves conditions as close as
possible to the above, perhaps, by the use of ducting or of false skirting.
Where there is a suspended floor over a well ventilated under floor space, it may be sufficient just to set ventilation
openings through the floorboards adjacent to the chimney breast. Older houses with the possibility of draughts
entering around doors and windows will still profit from the provision of a separate air supply as, properly placed,
this will stop or reduce cold draughts.
DO NOT set a ventilation grille in the hearth immediately in front of the fire. The cold air entering the room will
form a cold ‘curtain’ in front of the fire and may destroy the warm air around the room.
DO NOT place an air supply inlet across the room from the fire. The draught of cold air crossing the room will
scour the room of warm air and the overall heating effect of the fire will be reduced.
DO NOT set a ventilation grille in a position where they may become liable to blockage.
Where the floor is solid, vents need to be provided through the walls in a manner, which achieves conditions as
close as possible to the above, perhaps, by use of ducting or false skirting.
When bringing in the air supply consideration should be given to any regulations that would effect the position of
any ducting or ventilation grilles.
Air Supplied from External Source
The primary air can be taken from an external source from outside
the building.
There is a flexible sleeve that slides over the air inlet pipe attached
to the rear of the stove. An air kit is available as an optional extra
to do this.
With this in place the flexible pipe can be fed through the wall
or floor to an external air source. An open grille maybe attached
to the end of the flexible pipe to stop debris from blocking the
pipe. Ensure that the grille does not restrict the air supply. The air
requirements are listed in the installation data table.