8
GB
Yrittäjäntie 14, FI-27230 Lappi • tel. +358 0207 416 740 • fax +358 0207 416 743 • www.narvi.fi/en
Figure 10.
Installation of casing sets.
3.6 Sauna heater stones
We recommend that you use Kota olive dolerite stones. Natu-
ral stones are not suitable to be used as sauna heater stones
10–15 cm. Before using the stones, they must be washed to
eliminate any impurities.
Bigger stones are placed in the
bottom of the stone compartment and the rest are piled
sparsely so that air can move freely between the stones.
Flat stones shall be stacked in upright position.
The stones
must not block air openings and stones must not be stacked
over the top surface of the sauna heater.
The recommended
quantity of stones in the sauna heater is shown in clause
1.1.
The use of stones with a regular shape (rectangular, etc.)
and light or ceramic stones is forbidden because of a risk of
too tight stacking.
Figure 10.
