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3.4 TROUBLESHOOTING
The stove does not work
Smoke comes out of the plate
Condensation in the hearth
The fire lights with difficulty
The oven does not get sufficiently hot
THE VARIOUS REASONS THE STOVE MIGHT NOT
WORK PROPERLY
THE FLUE PIPE
• Too short. The flue pipe stretches from the connection with
the stove to the base of the chimney pot. If the flue pipe is
too short, increasing its internal width will never compensate
for the reduction in height as that will only increase heat
dispersion, lower the temperature of the gases and
potentially compromise flue draught pressure. You are better
advised to use a flue pipe of the correct width and increase its
height by 1 or 2 metres to ensure decent flue draught
pressure.
• Too long. This doesn't generally affect flue draught pressure;
however the flue pipe should be well INSULATED to minimize
heat dispersion.
• Too wide. A flue pipe that is too wide will have a
proportionally larger surface area that will encourage the
gases to cool down and therefore compromise flue draught
pressure. One option is to put a stainless steel pipe of
suitable width inside the existing flue pipe and, after
connecting it to the stove, fill the gap between the two pipes
with heat-resistant granular insulation material (such as
mineral perlite).
• Too narrow. In this case you will not be able to exploit the
stovés potential. We can only suggest that you reconstruct the
flue pipe according to the required specifications.
• Tight sections. Changes in the pipés width will cause a loss
of flue draught pressure, slowing down and potentially
preventing the gases from leaving the flue.
• Too many bends. Bends cause a loss of flue draught
pressure, preventing the gases from leaving the flue. For each
PROBLEM
POSSIBLE CAUSE
It is not connected properly to the flue
The flue pipe does not conform
Other appliances are connected to the flue pipe
The hearth grill is the wrong way round
The hearth grill is blocked with ash
No flue draught pressure
It is not connected properly to the flue
The starter and/or primary air valve is closed
The platés seals have come loose or are broken
The wood is damp or not properly seasoned
The flue is too wide
Poor flue draught pressure
The starter is not fully open
The flue is cold (due to a long period of inactivity)
Poor or insufficient flue draught pressure
The internal pipes are clogged
The starter is open
Excessive flue draught pressure
(DOMINO model only) Check the version of the flue outlet
bend you need to increase the height of the flue pipe by 50
centimetres so as to ensure optimal flue draught pressure.
• Excessive deviations. Deviations affect the discharge of
gases and should generally be avoided.
• Horizontal sections. These should be avoided or kept as
short as possible and always at a minimum gradient of 2 cm
per metre. You are advised to assess the depression to
guarantee sufficient gas evacuation. The flue pipe should be
increased in proportion to requirements.
• Obstruction in the flue pipe. When the stove is not used for
a long period of time, and especially during the summer, you
might find that birds, wasps or bees will nest in the chimney
pot; in which case you will have trouble lighting the stove
again. Moreover, a poorly or improperly made flue pipe may
cause instances of crumbling plaster or cracks through which
air enters.
CLEANING THE FLUE PIPE. THE FLUE PIPE MUST BE
CLEANED ON AN ANNUAL BASIS.
AIR RECOVERY
• No air recovery. The stove can still be lit but soon burns
up the available oxygen, reducing combustion and caus-
ing the gases to build up and come out of the stove. The
purity of the ambient air is compromised as a result. In
this case you definitely need an outside air vent.
• Insufficient air recovery. If there is insufficient air recovery,
combustion is poor and gases will come out of the stove
especially when you open the door to add more wood.
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