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9
OPERATING INSTRUCTIONS
Symptoms of poor performance related to flue draught
include:
• Excessive fuel consumption (high flue draught)
• Poor burning control, overheating (high flue draught)
• Wind noise from air controls (high flue draught)
• Difficulty getting a fire going and keeping it burning well
(low flue draught)
• Low heat output (low flue draught)
• Smoke entering room when doors opened (low flue
draught)
The construction, position, size and height of the chimney
are all factors that affect the performance of the flue
draught.
Other factors that can effect the flue draught include:
• Trees or other buildings nearby causing turbulence
• High and gusty winds
• Outside temperature
• Outside weather conditions
• Incorrect additional ventilation to building
• Blocked flue / chimney
For advice on the correction of persistent flue problems
consult a qualified solid fuel heating engineer before
continuing to use the Huntingdon stove.
10.5
Weather conditions
The weather conditions outside the building could have an
effect on the burning performance of the Huntingdon stove.
These could include:
Windy days - Smoking from the appliance. This could
be caused by turbulent airflow around chimney terminal,
possibly caused by the position of other buildings or
obstacles nearby. This problem is, also, sometimes
associated with oversize chimneys, which may even have
downdraught problems on calm days. If smoking is a
common problem on windy days make a note of the wind
strength and direction before consulting your appliance
installer, who will advise you on possible solutions to the
problem, after visiting the installation.
Damp / Rainy days – These sometimes result in problems
when lighting and maintaining the fire, due to the lower
flue temperatures and smaller difference between indoor
and outdoor temperatures reducing the flue draught. Also,
rain water running down the inside of the chimney reducing
the flue temperatures. To help with this problem care must
be taken to use good quality kindling wood, when starting
the fire, and running the stove at a higher heat setting than
normal for a period after start-up to fully heat the chimney.
It could be possible to fit a rain cowl to the chimney to
reduce this problem. Your appliance installer should advise
you on possible solutions.
If the Huntingdon stove emits smoke into the room
continuously close the air controls and allow the stove to go
out, and ventilate the room to clear the fumes.
Do not re-light the appliance until the cause of the
problem is identified and rectified.
10.6
Troubleshooting
STOVE GLASS BLACKENING:
This occurs as a result of four possible causes:
1.
Burning unseasoned wood – See page 8 (section 10.1)
for more information on how to identify when your wood
is ready for burning. Properly seasoned logs will have been
kept for a minimum of a year but are best burnt at 2 years.
2.
The stove being burned at too low a temperature - A
good working temperature is 300-500° F (120 – 250° C).
A stove pipe thermometer will help identify this problem.
(Stovax part no 3046). Burning the stove with the airwash
control fully open for a period of around 20 minutes ought
to cure this. This might be caused by damping your stove
down overnight.
3.
Problems with your flue – in particular insufficient air
pull. If your flue is not doing its job efficiently this can
cause blackening of the glass. A flue which is too short,
experiences a downdraft, needs lining or has too many
bends can promote blackening. If you suspect your flue may
be contributing to the blackening of your stove glass you
should contact the installer or a flue specialist.
RIDDLING MECHANISM JAMMING:
This occurs when fine ash builds up under the riddling bars
preventing their movement. To prevent this we recommend
that you follow a regular cleaning routine for the inside
of your stove, taking care to lift out the riddling bars and
remove all ash. Replace riddling bars when cleaning is
complete.
STOVE GLASS CRACKING:
Please ensure when replacing the glass in your stove that
you do not over tighten the screws on the glass clips as this
will cause stress in the glass and with the intense heating
and cooling of burning your stove it may well cause the
glass to crack.
STOVE IS PRODUCING TAR:
You can recognise this from the following traits:
Very strong pungent smell shortly after the stove is lit and
as the stove heats up, glass blackening and, possibly, can be
seen as a thick, brown and sticky material oozing from your
stove pipe joints.
This is caused by burning damp wood and burning your
stove at too low a temperature. To resolve this only use well
seasoned wood and ensure your stove is operating in the
ideal temperature range. Tar is a major cause of chimney
fires - if you experience problems with tar build up, please
consult a chimney sweep before continued use of your
stove.
Ideal working temperature range is 130°C and 240°C
(270°F – 465°F). If you fail to close down your primary air
control once the stove has heated up to this range you may
cause your stove to overfire and the temperature to exceed
the ideal range. Overfiring can cause permanent damage to
your stove and will invalidate your warranty.