ENGLISH
23
A
B
C
AIR VENTILATION
INSULATION
The sauna must have proper insulation on the walls, ceiling and door. One square meter (m²) of un-
insulated surface increases the cubic volume by approximately 1,2m³ when determining the power
requirement of the heater. See page 38 (Technical Data).
Ensure that moisture proofing is appropriate in the sauna room. The purpose of this is to prevent
spreading of moisture to the other rooms or wall structure. Moisture proofing must be placed
between heating insulation and panel.
Thermal and moisture proofing need to be installed according to the following order from outside
to inside:
•
The recommended minimum thickness of the thermal insulation in the walls is 50 mm and
in the ceiling 100 mm.
•
It is possible to use carton or aluminum foil laminate as a vapor barrier, which is affixed
over the insulation aluminum foil inwards.
•
Leave at least 20 mm air slot between vapor barrier and inside To prevent gathering of the
moisture behind the panel, leave the slot between wall panel and ceiling.
To have a soothing sauna, there should be a proper mixing of hot and cold air inside the sauna
room. Another reason for ventilation is to draw air around the heater and move the heat to the
farthest part of the sauna. The positioning of the inlet and outlet vents may vary depending on the
design of the sauna room or preference of the owner.
When using mechanical ventilation, the inlet vent should be placed at least 50 cm above the heater
(Fig A) or on the ceiling above the heater (Fig B). Through these positions, the heavy cold air that
is blown into the sauna is mixed with the light hot air from the heater, bringing fresh air for the
bathers to breathe. The inlet vent must have a minimum diameter of 10cm.
The outlet vent should be placed diagonally opposite to the inlet. It is recommended that the
outlet vent be placed near the floor under the sauna benches as far as possible from the fresh air
vent. Outlet air may be led outside through a pipe on the sauna ceiling, or under the door (to the
washroom). In this case, there must be at least 5 cm gap under the door and it is recommended
that there is mechanical ventilation in the washroom. The size of the outlet vent should be twice
that of the inlet.
Kuva 7
Fig. 7
