HUUM STEEL 10,5, Руководство пользователя

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Floor of the sauna room
The heater stones in use crumble due to temperature changes.
The pieces and pebbles breaking away from the heater stones are
washed on the sauna’s floor with the steam-making water. Hot stone
parts may damage plastic flooring under and near the heater.
Heater stone particles and sprays from the steam-making water (e.g.,
with iron content) may absorb into the light joints of a tile floor. In
order to avoid aesthetic damage (caused by the reasons mentioned
above), ceramic tiles and dark joint filler should be used under and
around the heater.
Ventilation of the sauna
In order to assure a sufficient oxygen supply and fresh air, the sauna’s
ventilation must be as efficient as possible. It is advisable to direct
the fresh air into the sauna room from above the heater stones. As an
alternative, the fresh air may be directed in from under the heater.
The air inlet must be equipped with an adjustable valve. The exhaust
valve must be installed in the opposite wall from the heater at least
20 cm above the inlet valve. It is advised to install a ventilation valve at
the upper part of the sauna room for the final ventilation.