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Do not stack firewood in the firebox over 2/3 of its height.
Quantities of firewood are shown in clause
4.1
. In the ignition
phase the ash drawer can be kept open by 10 mm more than
indicated in the table. After igniting put the ash drawer back in
the position as shown in the table.
In a sauna heater equipped with a water tank or in a sauna
heater that is heated from another room firewood should not
be burnt in the front part of the firebox / in the extension, but
the firewood must be placed entirely on the grate of the firebox.
Do not forget that the sauna heater and its part become
very hot during heating. Always use gloves or other
hand protection when being in touch with the parts of
the heater. When moving around in the sauna be careful,
because the floor and the ceiling of the sauna may be
slippery.
Be careful – water in the water tank of the sauna heater
may be very hot.
One firebox of firewood burns approximately half an hour.
Good time for adding firewood is when there are still some
blue flames on coal in the firebox. Before adding firewood you
may even slightly coal on the grate. If firewood is added in the
flames too early, the temperature of fume gases increases. Do
not use the door to push firewood in the firebox.
In case sauna is used or the sauna heater is heated also after
recommended number of times firewood should be added as
stated in the table, firewood should not be added according
to the quantities mentioned in the table. A proper quantity
for keeping heat is 1-2 logs (approximately 1 kg of firewood)
every half an hour. The ash drawer may be closed a bit. If you
add a big quantity of firewood, the temperature of flue gases
rises and this can damage the smoke flue and cause fire haz-
ard. But do not heat continuously over 3 hours. Thereafter, the
sauna heater must be let cool down before the next heating.
In case sauna will not be used any longer and coal is still
glowing without flame, extinguishing can be speeded up by
increasing the draft. For this open the ash drawer by 10-20
mm. There is enough heat accommodated in the stones of
the sauna heater to dry the sauna room.
In ignition phase the closing pan must be fully open. Before
you close the closing pan after heating, check that there is no
glowing coal in the firebox. Otherwise fumes may be released
in the sauna. Carbon monoxide is an odourless and colour-
less toxic gas.
If you have not used the sauna heater and smoke flue for a
longer period or it is cold, please check before use that the
smoke flue is in proper order and that there are no corrosion
damages on the sauna heater. Start heating very slowly and
with small quantity of firewood so that not to damage the
smoke flue.
In case of malfunction, stop the heating immediately and
close the fireplace and ash box doors.
4.3 Steam water
Use normal domestic water for steam water.
Quality requirements for domestic water:
humus content < 12 mg/l
iron content < 0.2 mg/l
calcium content < 100 mg/l
manganese content < 0.05 mg/l
Do not use sea water or other salty water. Also do not use
water containing chlorine. The warranty of the sauna heater
does not cover damages caused by the use of unsuitable
steam water. Do not throw water on the stones, if you yourself
or somebody else is straight by the sauna heater. Hot water
steam may cause burns.
4.4 Removing the ashes
The ash drawer must be emptied every time before heating
the sauna heater. The ash drawer must be emptied immedi-
ately, if ashes fill more than half of the drawer. Otherwise, the
airflow through the firebox grate will be hindered, which will
shorten the life of the grate.
The ash drawer must be emptied in a non-combustible con-
tainer (for instance metal bucket) after ash has cooled down.
Do not leave the ash bucket standing by the wall (for instance
on the terrace). If the smoke flue is equipped with a closing
pan, it should be opened for the time ash is removed. Dust
will escape with the draft.
4.5 Maintenance of the sauna heater
The fireplace, the connective flue and the chimney must be
swept regularly. Cleaning and sweeping of the chimney is im-
portant especially if the fireplace has not been used for a longer
period. Besides removing the ashes and having the chimney an-
nually cleaned by a chimney sweep, the sauna heater requires
no other maintenance. The condition of the heater should be
monitored, and usage must be terminated immediately if devia-
tion is recognized. chimney sweepers are qualified to estimate
the condition, and it helps the inspection if the stones are re-
moved before. To open the cleaning hatch of the sauna heater,
the upper stones have to be removed from the sauna heater.
The stones of the sauna heater have to be re-arranged once per
year and replaced every other year. Cracking stones collapse
and fall lower, some stones will erode. Remove eroded and bro-
ken stones. Due to insufficient maintenance the sauna heater
needs more time for heating, which in its turn causes load on
the structure of the sauna heater. The enamel surface of the
sauna heater should be cleaned regularly with a damp cloth.
Also the water tank of the sauna heater should be regularly
cleaned. Use only clean water to fill the tank. If there is a dan-
ger that water can freeze, the water tank should be emptied.
4.6 Disposal
For disposal take the sauna heater to the public waste
recycling centre.
EN
