Air Ventilation; Insulation - Sawo CUB3-45NB Handbuch

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 10 cm.
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 5cm and it is recommended that there is mechanical ventila-
tion 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 1,2 m³
when determining the power requirement of the heater. See page 28 (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 pa-
nel and ceiling.
Abb. 7
Fig. 7
A B C
ENGLISH
21