Installation
Check the chimney is in good condition, dry, free from cracks and obstructions. The
diameter of the flue should not be less than 150mm and not more than 230mm. If
any of these requirements are not met, the chimney should be lined by a suitable
method.
The chimney height and the position of the chimney terminal should conform to
Building Regulations.
A flue draught of minimum 12 Pascals water gauge is required for satisfactory
appliance performance. The flue draught should be checked under fire at high
output and if it exceeds the recommended maximum, a draught stabiliser must be
fitted so that the rate of burning can be controlled, and to prevent over firing.
If you have any doubts about the suitability of your chimney, consult your local
dealer/stockist.
The chimney must be swept before connection to the stove and swept every six
months thereafter. If there is an excessive build up of soot, then the chimney must
be swept and the reason for build up investigated.
An existing fireplace opening can be bricked up or sealed with a register plate,
2.5mm steel sheet or concrete. A short length of flue pipe no smaller in diameter
then the stove flue outlet or the manufacturer’s stated flue size may then be used to
connect the stove to the chimney. This flue pipe should be of cast iron, 316 grade
stainless steel or vitreous enamelled, nominal thickness 1.2mm. Ensure that the pipe
end is no closer than 76mm to the side or rear chimney walls.
Ideally, the old fireplace should be filled in so that there is a smooth streamlined
entry into the flueway.
The length of any horizontal run of the flue pipe must not exceed the flue outlet
diameter on the stove.
It is essential that all connections between the stove and chimney-flue are sealed
and made airtight.
Both chimney and flue pipe must be accessible for cleaning and if ALL parts of the
chimney cannot be reached through the stove, a soot door must be fitted to
enable this to be done.
If a change in direction is required in the pipe work then it should be no less than 45
degrees. If a 90 degree bend is required then a swept elbow should be used, or 2 x
45 degree elbows. A clean out point at every change of direction is
recommended.
