ENGLISH
17
Kuva 7.
Fig. 7
Ilmanvaihto saunassa
Airventilation in sauna room
AIR VENTILATION
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.
The inlet vent may be installed on the wall directly below the heater (Fig. A). When using the
mechanical ventilation, the inlet vent may be placed at least 60 cm above the heater (Fig B) or
on the ceiling above the heater (Fig. C). 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 and the outlet vent must have a diameter of 10cm.
The outlet vent should be placed diagonally opposite to the inlet. It is recommended that the outlet
vent be placed under the platform in a sauna as far as possible from the fresh air vent. It may be
installed near the floor, or led outside through a pipe from the floor going to a vent to the sauna
ceiling, or under the door (to the washroom). In this case, the sill slot must be at least 5 cm and
it is recommended that there is mechanical ventilation in the washroom. The size of the exhaust
should be twice that of the inlet.
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 24 (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.
A
B
C
