Maintenance; Heating Of The Sauna; Using The Heater; Heater On - Harvia Vega Owner's/Operator's Manual

Water properties
Humus concentration
Iron concentration
Manganese (Mn) concentration
Hardness: most important substances are
magnesium (Mg) and lime, i.e. calcium (Ca)
Chloride-containing water
Chlorinated water
Seawater
Arsenic and radon concentration
Table 1. Water quality requirements

1.1.1. Maintenance

Due to large variation in temperature, the sauna
stones disintegrate in use.
Rearrange the stones at least once a year or even
more often if the sauna is in frequent use. At the
same time, remove any pieces of stones from the
bottom of the heater and replace any disintegrated
stones with new ones. By doing this, the heating
capability of the heater stays optimal and the risk
of overheating is avoided.
Pay attention especially to the gradual settling
of the stones. Be sure that the heating
elements do not appear with time. The stones settle
most rapidly within the first two months of piling.

1.2. Heating of the Sauna

When operating the heater for the first time, both the
heater and the stones emit smell. To remove the smell,
the sauna room needs to be efficiently ventilated.
If the heater output is suitable for the sauna room,
it will take about an half an hour for a properly insu-
lated sauna to reach the required bathing tempera-
ture ( 2.3.). The sauna stones normally reach the
bathing temperature at the same time as the sauna
room. A suitable temperature for the sauna room is
about 149–167 °F (65–75 °C).
Before switching the heater on always check
that there isn't anything on top of the heater
or inside the given safety distance.
Figure 3.
EN
Effect
Colour, taste, precipitates
Colour, odour, taste, precipitates
Colour, odour, taste, precipitates
Precipitates
Corrosion
Health risk
Rapid corrosion
Health risk

1.3. Using the Heater

Heater models are equipped with a timer and a ther-
mostat. The timer is for setting the on-time for the
heater (60 minutes) and the thermostat is for setting
a suitable temperature. 1.3.1.–1.3.3.

1.3.1. Heater On

average Sauna temperature.

1.3.2. Heater Off

Switch the heater off after bathing. Sometimes it
may be advisable to leave the heater on for a while
to let the wooden parts of the sauna dry properly.
Always check that the heater has switched
off and stopped heating after the timer has
turned the switch to OFF.
Recommendation
<12 mg/l
<0,2 mg/l
<0,10 mg/l
Mg: <100 mg/l
Ca: <100 mg/l
Cl: <100 mg/l
Forbidden to use
Forbidden to use
Forbidden to use
Turn the timer switch (section A in figure
3) from OFF to 1h. The heater starts
heating immediately. Allow at least 30
minutes for sauna room to heat up to an
The heater switches off, when the timer
turns the switch back to OFF. You can
switch the heater off at any time by
turning the timer switch to OFF yourself.
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