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1.5 The chimney
If local regulations permit, the stove may be connected to a chimney already serving an-
other replace (such as an oil-burning stove or another wood-burning stove). Attention
should be paid to any requirements concerning the location of ue pipes if two or more
replaces are connected to the same chimney.
The wood-burning stove must never be connected to a chimney to which a gas-burning
stove is already connected.
An ecient, modern stove places great demands on the chimney, so you should get the
chimney sweep to evaluate chimney.
The aperture of the chimney must comply with national and local regulations. In general,
the aperture area should measure at least 175 cm2 (150 mm diameter) for wood-burning
stoves.
An overly large chimney aperture will mean that too much energy will be required to heat
the chimney suciently to achieve an acceptable draught in the chimney. If you have a
brick chimney with a large aperture, we recommend that you install an insulating chimney
liner of the proper diameter. This will increase the draught, and improve the fuel economy.
There are no requirements with respect to specic chimney heights, but a chimney must
be tall enough to provide a good draught, and to ensure that the smoke does not cause any
problems. As a general rule, there will be a satisfactory draught if the chimney extends 4
metres above the stove and at least 100 cm above the spine of the roof.
If the chimney is located along the side of the house, the top of the chimney should never
be lower than the spine of the roof or the highest point on the roof. Please note that there
are often national and local regulations concerning the location of chimneys in houses with
thatched roofs. Please see section 1.9 on Draught.
The chimney and the ue pipe must be tted with cleaning doors, which must be at least
the same size as the chimney’s aperture area.
The chimney must be accessible for external inspection, and it must be possible to access
the cleaning doors and the chimney if it is to be cleaned from the top (e.g. steel chimneys).
