Sauna Room; Recommended Sauna Ventilation; Heating The Sauna; Installing The Sensor Near A Supply Air Vent - Helo FONDA DUO Product Manual

Operating and installation instructions Fonda duo

2.2 Recommended sauna ventilation

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Image 1 Recommended ventilation in the sauna

1. Sauna room

2. Bathroom
7. A ventilation valve can also be installed here which is kept closed while the sauna is heating up and while bathing.
An inlet vent for fresh air can be positioned within area A. It must then be checked that the fresh air that enters does
not interfere with (cools down) the heater's thermostat that is located near the ceiling.
Area B is used for intake of fresh air if the sauna room does not have mechanical ventilation. If this is the case the
exhaust air valve must be positioned a minimum of 1 m higher than the inlet valve.
THE INTAKE VALVE FOR FRESH AIR MUST NOT BE POSITIONED WITHIN AREA C IF THE HEATER'S
CONTROL THERMOSTAT IS ALSO LOCATED WITHIN AREA C.

2.3 Heating the sauna

Before turning the heater on: ensure that the sauna room is suitable for taking a sauna bath. When heated for the first
time, the sauna heater may emit some odor. If this is the case, disconnect the sauna heater briefly, and air the room.
Then turn the sauna heater on again.
Turn the heater on at the control panel, where you can adjust the temperature and the time.
The heating of a sauna should be started roughly an hour before you plan to take a sauna bath, so that the stones
have time to heat up properly and the air warms up evenly in the sauna room.
Do not put any objects on the sauna heater. Do not dry clothes on the sauna heater or anywhere in its
vicinity.

2.4 Installing the sensor near a supply air vent

The sauna room air should be exchanged six times in an
hour. The diameter of the supply air pipe should be
between 50 and 100 mm.
A circular air supply vent (360°) must be
installed at least 1000 mm away from the sensor.
An air supply vent with a flow-directing panel
(180°) must be installed at least 500 mm away from
the sensor. Air flow must be directed away from the
sensor.
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3. Electric sauna heater
4. Exhaust air valve
C C
C C
1000 mm
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B B
3 3
B
5. Flue or channel
6. The sauna room's door
1000 mm
360°
500 mm
180°
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A
A A
min
500 mm
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Sensor
Sensor