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Hwam 2640 Manual

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a desired heat level, which suits the room in which the stove is installed. When the thermostat is set at
a heat level, the control function will adapt to this temperature.
• If the room temperature is lower than the desired heat level, the control function increases the flue
gas temperature in order to increase the heat radiation from the stove.
• If the room temperature is higher than the desired heat level, the control function decreases the flue
gas temperature, thereby giving the layer of embers as long a life as possible before re-stoking. This will
reduce the heat radiation from the stove and facilitate re-stoking without having to light up the fire
anew. If the room temperature drops below the desired level, the ember phase will be shortened, and
the system will activate a re-stoking alarm. The system will signal that a re-stoking is due at the flue gas
temperature of 180° C, and at 100° C the system will enter standby mode and all dampers will close.
• Should the room temperature be much lower than the desired heat level, the control function increases
the flue gas temperature. If a satisfactory increase in temperature does not occur, the control will activate
a re-stoking alarm, since it expects that more wood is needed to increase the heat level in the room.
• If the room temperature after a new re-stoking still does not reach the desired level, the water content
in the firewood may be too high or the draught in the chimney too weak. For environmental reasons
the recommended flue gas temperature should always be a min. of 350° C.
Stoking
When the stoking alarm on the remote control sounds, the stove is ready for stoking. The remote control
will recommend the amount of wood you should use.
Small amount of wood Medium amount of wood Large amount of wood
(700 - 1200 g) (1000 - 2000 g) (1800 - 3000 g)
In terms of combustion technique, you should always stoke the stove with at least two pieces of wood
at a time even if you only use a small amount of wood. You can also choose not to restoke. After a while
the stove will then automatically go into hibernation.
In exceptional cases the system might not register that the stove has been re-stoked. This can occur if
the oxygen level in the combustion compartment, due to the low flue gas temperature, reaches a point
where the system fails to register an increase in the oxygen level in spite of the stove door having been
opened. After stoking, the status line should therefore be checked on the remote control. Shortly after
the lighting of the wood, the middle section of the remote control, representing the combustion process
phase, should light up. (
) If it enters standby mode, press the remote control
twice, so the match symbol is displayed.
During combustion, the outer surfaces of the stove will become hot, and due care must
therefore be shown.
Firing with coal, briquettes and coke
Burning coal and coke is not possible in this stove since there is no room for a coal insert. Briquettes can
be used however. These are placed onto the wood embers. Remember that after this the regulat
-
ing rod must be closed again. Be aware that using fuels other than wood, will cause soot to
form on the glass pane.
FiRing in gEnERAl
Rapid or fierce heat
Rapid or fierce heat is obtained by burning many small pieces of wood.
Maximum amounts of fuel:
The maximum allowed amount of fuel per hour is:
Wood: 2.1 kg
… 16 …


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