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990-WNWD-I03-020317
THE IMPORTANCE OF A HEALTHY FLUE
The successful operation of your range cooker is entirely dependent
on the adequate performance (pull) of the chimney or flue to which
it is connected. The following maintenance guidelines will be
pointless unless the flue is also maintained and cleaned regularly.
How often it needs cleaning will depend on the quality and
moisture content of the wood you burn but an annual clean is
recommended. A partially blocked or dirty flue can have disastrous
implications for an otherwise perfectly installed cooker as can be
seen in figure17. Cooker A has been used regularly for over a year
following these maintenance guidelines and with a clean flue
drawing correctly. Cooker B was just 6 weeks old when the picture
was taken and shows how quickly tar deposits will build up if the
flue performance is poor and clogged with old soot as it was in this
case.
Fig 17 Healthy flue gauge & Poor flue gauge
Healthy flue:
The flue
draught meter shows a
reading (between 12 &
24 Pascal’s or 0.12mm
& 2.5mm or 0.05wg &
0.1wg) which is ideal
for optimum firebox
performance
Unhealthy flue: The
flue draught meter
shows a reading well
below the required
operating range that
will result in poor,
smokey performance.