Yrittäjäntie 14, FI-27230 Lapland • phone +358 207 416 740 • fax +358 207 416 743 • www.narvi.fi
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2.5 Top cover
A
A
A. Install the top cover (includes ready-installed insulation
and a stainless steel inner layer).
2.6 Firebricks
A
B
A. Firebricks must be laid in two layers. Lay the first layer
of firebricks vertically along the edges. When the bricks
do not fit well, cut one brick in half and make the brick
layer tight.
B. Place the arches. Check that the arches are tightly in
place and lay the sauna heater stones on the arches
starting with bigger stones. The arches are included
only in the ceramic stone package.
2.7 Stacking sauna heater stones
100 MM BALLS
Place 100 mm balls in the bottom. Smaller balls may be
used for supporting the edges of the structure.
80 MM BALLS
Next place 80 mm balls. As the height increases, also con-
tinue with stacking the sauna heater stones.
60 MM BALLS
Place 60 mm balls evenly on top of 80 mm balls.
TETRA-STONES
Lay small tetra-stones in the upper layer.
OLIVINE
>20CM STONES
Place over 20cm stones in the bottom.
12-20CM STONES
Next place 12-20cm stones. As the height increases, also
continue with stacking the firebricks.
7-12CM STONES
Place 7-12cm stones last to the top.
The amount of stones is sufficient when some are left over.
Not all stones should be placed in the sauna heater. Leave
about 5cm free space between stones and cast iron cover.
Do not complete the first layer fully before the first heating.
During heating add stones in places that start glowing first.
The first layer functions as an adjustment layer. To reduce
excessive draught add stones in the first layer.
When the draught of the sauna heater is poor and heating
takes very long, check whether the stones are not stuck
too tightly. Wood that is moist or of poor quality also pro-
longs the heating time.
In case of questions regarding installation of sauna
heater stones or arches, please contact us: NARVI Oy
020 741 6740 or Kerkes Oy 050 373 1313
2.8 Cast iron lid and insulation wool
A
B
A. Place the cast iron lid with the closing pans.
B. Do not forget to place a piece of insulation wool
included in the delivery on top of the cast iron lid.
Also the space between the cast iron lid (edges) and sauna
heater casing must be insulated with wool. This prevents
accumulation of soot on the upper part of the sauna heater
and keeps heat better in the sauna heater.
