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This appliance requires a constant supply of air to maintain proper combustion and eective lue performance.
An inadequate air supply can result in poor combustion and smoke entering the room which is potentially
dangerous. This supply of air can come from either:
The amount of air required must comply with local building regulations and the rules in force. If spillage is
detected during commissioning then there may be insuicient natural ventilation and an additional air supply
will be necessary. Many older buildings are suiciently ventilated by natural leakage of air to provide suitable air
supply for an appliance of 5kW output or less.
Extractor fans should not be installed in the same room as the appliance and any air vents should be positioned
so that they are not liable to blockage.
Ventilation
The chimney draw is critical on any installation and should be checked to ensure that it matches what is speciied.
If it is higher than
recommended provision must be made to correct the overdraw. The draw can vary in dierent weather
conditions and the customer should be made aware of this. Failure to correct an over-drawing lue will invalidate
the warranty, and may damage the appliance.
Please remember that chimney draught is dependent on four main factors.
The lue or chimney system must be in good condition. It must be inspected by a competent person and passed
for use with the appliance before installation. Products of combustion entering the room can cause serious health
risks.
The following must be checked:
requirements of the Building Regulations.
manufacturer’s instructions and Building Regulations. The lue liner must be replaced when an appliance is replaced, unless
proven to be recently installed and in good condition.
and a maximum of 4 bends. Bends must have angles of less than 45 degrees from the vertical.
supporting structure of the building.
obstructions.
use after installation to clear any soot falls that may have occurred due to dierence in combustion levels.
running at maximum speed (see next section for additional ventilation requirements). Max. draught = 2.0mm Wg, Min.
draught = 1.0mm Wg
Chimney
