Instruction Manual: Hot Tub
36
6.8
Running the stove
NOTE
The water inlet for the stove must be filled with water before running the hot
tub so as not to damage it. The water level of the tub must therefore be at least
50 mm above the upper edge of the water inlet for the stove. Do not use
treated or damp wood. Always keep a certified fire extinguisher near the hot
tub.
The stove can be fired with different types of firewood. These are listed below as examples along with their
advantages and disadvantages.
Other types of firewood may also be used to operate the hot tub at
the user's own risk and discretion.
NOTE
It is imperative that you use firewood that is intended for this purpose so as to
avoid damaging the hot tub. Pallet wood, or treated (e.g.: impregnated) wood
can cause damage to the stove and consequently to the hot tub.
Table 5: Types of wood for the stove (examples)
Type of wood
Energy value
Flammability
Cleavability
Smoke
production
Sparking
General usability
Sycamore
moderate
high
good
low
low
recommended
Birch
high
high
good
low
low
highly recommended
Beech
high
high
good
low
low
highly recommended
Oak
high
high
good
low
low
highly recommended
Ash
high
high
good
low
low
highly recommended
Ash-maple
low
high
poor
moderate
low
not usually recommended
Spruce
moderate
high
good
low
low
recommended
Dogwood
high
high
good
low
low
highly recommended
Cherrywood
moderate
high
good
low
low
recommended
Mulberry
high
high
good
low
low
highly recommended
Poplar
low
high
good
moderate
low
not usually recommended
Pine
high
high
good
high
low
recommended
Elm
moderate
moderate
poor
moderate
low
not usually recommended
Walnut
moderate
high
good
low
low
recommended
Willow
low
high
good
moderate
low
not usually recommended
Cedar
moderate
high
good
moderate
high
recommended
Cypress
moderate
moderate
good
moderate
low
not usually recommended
As a rule, it is best to use thin, untreated pieces of spruce for the stove. The following applies
here: The denser the wood, the greater the energy value. Place the wood on the grate inside
the stove.
NOTE
Never place the firewood on the ash pan or in front of the grate. Incorrectly
placed wood can lead to material damage and represents a fire hazard.
