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360°
Figure 3.
2.1.1. Blackening of the Sauna Walls
It is perfectly normal for the wooden surfaces of the
sauna room to blacken in time. The blackening may
be accelerated by
sunlight
•
heat from the heater
•
protective agents on the walls (protective
•
agents have a poor heat resistance level)
fine particles disintegrating from the sauna
•
stones which rise with the air flow.
2.2. Sauna Room Ventilation
The air in the sauna room should change six times
per hour. Figure 3 illustrates different sauna room
ventilation options.
A. Supply air vent location. If mechanical exhaust
ventilation is used, place the supply air vent
above the heater. If gravity exhaust ventilation
is used, place the supply air vent below or next
to the heater. The diameter of the supply air
pipe must be 50–100 mm. Do not place the
supply air vent so that the air flow cools the
temperature sensor ( 3.3.1.)!
B. Exhaust air vent. Place the exhaust air vent
near the floor, as far away from the heater as
possible. The diameter of the exhaust air pipe
should be twice the diameter of the supply air
pipe.
C. Optional vent for drying (closed during heating
and bathing). The sauna can also be dried by
leaving the door open after bathing.
D. If the exhaust air vent is in the washroom, the
gap underneath the sauna door must be at
least 100 mm. Mechanical exhaust ventilation
is mandatory.
2.3. Heater Output
When the walls and ceiling are covered with panels
and insulation behind the panels is adequate, the heat-
er output is defined according to the volume of the
sauna. Non-insulated walls (brick, glass block, glass,
concrete, tile, etc.) increase the need for heater out-
put. Add 1,2 m³ to the volume of the sauna for each
non-insulated wall square meter. For example, a 10 m³
sauna room with a glass door equals the output re-
quirement of about a 12 m³ sauna room. If the sauna
room has log walls, multiply the sauna's volume by
1,5. Choose the correct heater output from table 2.
6
min. 1000 mm
min.
500 mm
180°
B
2.4. Sauna Room Hygiene
Bench towels should be used during bathing to pre-
vent sweat from getting onto the benches.
The benches, walls and floor of the sauna should
be washed thoroughly at least every six months.
Use a scrubbing brush and sauna detergent.
Wipe dust and dirt from the heater with a damp
cloth. Remove lime stains from the heater using a
10% citric acid solution and rinse.
D
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