Thermostat; Overheating Limiter; Throwing Water On Heated Stones; Sauna Water - Harvia KV-45 Instructions For Installation Manual

Example 1.
You want to go jogging and have a sauna bath after
that. The estimated duration of your run is 5 hours.
Turn the timer clockwise over the scale 0–1 to the
pre-set section (scale 1–8) at number 4.
The timer will start, and after four hours, the heater
will come on. Because it takes about one hour for the
sauna to be heated, it will be warm and ready for
bathing after about 5 hours, that is, when you come
back from your run.
Example 2.
If you want to bathe "immediately" and thus do not
want to use the pre-set timing, the timer must be
set to the desired point in the section 0–1. Then, the
heater will be switched immediately on and the sauna
will be ready for bathing after about one hour.
Switch the heater off immediately after bathing and
check that the sauna stones are dry. Sometimes it may
be advisable to leave the heater on for a while to let the
wooden parts of the sauna dry properly.
NOTE! It is absolutely necessary to check that the
timer has cut off the supply of the elements after the
set time.

1.3.2. Thermostat

The temperature is adjusted by the thermostat to a
position between minimum and maximum. The
correct position of the thermostat switch is found
by experimenting.
Begin experimenting at the maximum position (far
right) to find how quickly the sauna room and stones
can be heated to the desired temperature. If, during
bathing, the temperature seems to be becoming too
high, turn it down a little by turning the switch counter-
clockwise. It must be noted that even a small difference
within the maximum section will change the temperature
of the sauna considerably.

1.3.3. Overheating limiter

Each heater i equipped with a overheating limiter
which is a safety device.
If, for some reason, the temperature of the sauna
room becomes too high, the overheating limiter will
permanently cut off the supply of the resistances.
The overheating limiter cannot be reset to the
position allowing electricity until the heater has
cooled down. The overheating limiter is reset by
pressing the reset button, which is located in bottom
of heater. See figure 3.
To reset the overheating limiter, locate the reset
button and push upward until contactor kicks in. If reset
button continues to trip, contact a qualified service
person. Do not remove the overheating limiter bulb.
See spare parts no. 2.
Prior to pressing the button, the cause of the fault
must be found:
are the stones crumbled and pressed together?
•
has the heater been on for a long time while
•
unused?
has the heater been banged or shaken?
•
4.

1.4. Throwing Water on Heated Stones

The air in the sauna room becomes dry when warmed
up. Therefore, it is necessary to throw water on the
heated rocks to reach a suitable level of humidity in
the sauna.
The humidity of the air in the sauna room is controlled
by the amount of water thrown on the rocks. A correct
level of humidity makes the bather's skin sweat and
makes breathing easy. By throwing water on the rocks
with a small ladle, the bather should feel the effect of
air humidity on his skin. Both too high a temperature
and air humidity will give an unpleasant feeling.
Staying in the hot sauna for long periods of time
makes the body temperature rise, which may be
dangerous.
The maximum volume of the ladle is 2 decilitres.
The amount of water thrown on the stones at a time
should not exceed 2 dl, because if an excessive amount
of water is poured on the rocks, only part of it will
evaporate and the rest may splash as boiling hot water
on the bathers.
Never throw water on the rocks when there are people
near the heater, because hot steam may burn their skin.

1.4.1. Sauna Water

The water to be thrown on the heated rocks should
meet the requirements of clean household water.
The factors essentially affecting the quality of water
include the following:
humuos content (colour, taste, precipitates);
•
recommended content less than 12 mg/litre.
iron content (colour, smell, taste, precipitates);
•
recommended content less than 0,2 mg/litre.
hardness – the most important substances are
•
manganese (Mn) and calcium (Ca);
recommended content of manganese
0,05 mg/litre, calcium less than 100 mg/litre.
Calcareous water leaves a white, sticky layer on the
stones and metal surfaces of the heater. Calcification
of the stones deteriorates the heating properties.
Ferrous water leaves a rusty layer on the surface of
the heater and elements, and causes corrosion.
The use of humous, chlorinated water and seawater
is forbidden.
Only special perfumes designed for sauna water may
be used. Follow the instructions given on the package.
Figure 3. Place of the reset button