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The Mendip 5 SE has been recommended as suitable
for use in smoke control areas when burning wood.
SE models have a modified secondary air control, only
SE models re suitable for burning wood in a smoke
control area.
Further information on the requirements of the Clean
Air Act can be found here :
http://smokecontrol.defra.gov.uk/
Your local authority is responsible for implementing the
Clean Air Act 1993 including designation and
supervision of smoke control areas and you can contact
them for details of Clean Air Act requirements
Refuelling on to a low fire bed
If there is insufficient burning material in the fire bed to
light a new fuel charge, excessive smoke emission can
occur. Refuelling must be carried out onto a sufficient
quantity of glowing embers and ash that the new fuel
charge will ignite in a reasonable period. If there are too
few embers in the fire bed, add suitable kindling to
prevent excessive smoke
Fuel overloading
The maximum amount of fuel specified in this manual
should not be exceeded, overloading can cause excess
smoke.
Operation with door left open
Operation with the door open can cause excess smoke.
The appliance must not be operated with the appliance
door left open except as directed in the instructions.
Dampers left open
Operation with the air controls or dampers open can
cause excess smoke. The appliance must not be
operated with air controls or dampers door left open
except as directed in the instructions
Wood burning – storage
When wood has been cut to an appropriate length and
split, it should be stored in a dry area. Stack the logs to
expose both ends to the air, as more drying occurs from
the ends than the sides. This holds even for wood that
has been split. The woodpile should be under cover to
prevent its absorbing moisture from rain or snow, but
should still be open on the sides to be subject to the
drying effect of sun and wind.
Do not store the wood within the installation clearances
of the appliance, or within the space required for
loading or ash removal.
To reduce the impact on the environment, select a local
supplier as this reduces the energy required to
transport the fuel. Where possible, ensure wood comes
from a sustainable source. Buy logs by volume rather
than weight, as the influence of moisture content is
removed from the calculation.
Wood burning –
creosote build-up
Wood combustion is never 100% complete; wood
smoke always contains some unburned material. A little
of this will condense on a cool surface, leaving a dark
brown or black substance that has an acrid odour. This
substance is commonly called creosote. If the exhaust
gases condense on cool surfaces such as a cold
chimney, they will retain large amounts of water. At
higher temperatures, the condensed creosote will
resemble tar.
Creosote generation is highest during low heat outputs
common with long, smouldering burns. Creosote
generation is lowest during high heat outputs common
with intense fires. For best results against creosote
build-up, it is recommended that a small, intense fire be
used, even though refuelling may need to take place
more often.
Creosote generation is also higher when burning wood
with a high moisture content, such as green wood. The
moisture in the wood absorbs heat from the fire, cooling
it below the point at which the creosote can be
consumed. The low-temperature smoke is then cooled
further in the chimney.
To reduce the likelihood of creosote build-up during
periods of low heat demand, it is recommended to fuel
the boiler with lower quantities of smaller diameter logs.
Matching fuel loads and heat requirements will result in
cleaner combustion and higher efficiency.
WARNING NOTE
Properly installed, operated and maintained this stove
will not emit fumes into the dwelling. Occasional fumes
from de-ashing and re-fuelling may occur. However,
persistent fume emission is potentially dangerous and
must not be tolerated. If fume emission does persist,
then the following immediate action should be taken:-
(a)
Open doors and windows to ventilate the room and
then leave the premises.
(b)
Let the fire go out.
(c)
Check for flue or chimney blockage and clean if
required
(d)
Do not attempt to relight the fire until the cause of
the fume emission has been identified and
corrected. If necessary seek expert advice.
The most common cause of fume emission is flueway
or chimney blockage. For your own safety these must
be kept clean at all times.
If a fire occurs in the chimney, immediately close the air
regulator wheel and air wash to cut off the fire's oxygen
supply. Evacuate the building and call the fire services;
do not use the stove until it has been certified safe by a
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