Heater Stones - KAJO TH2-30NB-CNR Manual

Heater Stones

The main purpose of the stones in the heater unit is to store enough energy to
efficiently vaporize the water thrown on top of the stones to maintain correct
humidity in the sauna room. The stones must be replaced at least once a year
or every 500 hours which ever occurs first. All stone crumbles must be
removed from the heater unit and replaced with new ones as described in the
heater manual. The required amount of stones is also listed in the manual
provided. See page 16 (Technical Data).
NOTE! Never use the heater without stones as it may cause fire or
damage the heater.
Olivine, olivine diabase or peridot in size less than 10 cm. Stones must
be loaded into heater so that there are space between stones for air
circulation.
If heater is used in commercial or public place, Kajosauna Oy
recommends to use KERKES ceramic heater stones. KERKES ceramic
stones are designed for sauna heaters and KERKES stones don't
crumble in high temperatures.
stones should be used only in the surface of the heater. Not touching
heating elements.
Loading stones into the heater
It is recommended that all stones should be rinsed to remove any stains or
dust that can cause unpleasant odour during the first few times of using the
heater. It is important that the stones are loaded carefully in a way that they
do not block air circulation through the heater. Load the stones to the heater so
that the heating elements are not visible from any angle. First lift up the
frame as shown in Fig. 3 and load the stones below. Put the frame
back properly and load the rest of the stones from the top. Make sure
that the elements don't get bended or touch each other as a result of the
loading. Larger stones that won't fit between the heating elements must not be
forced in place instead they must be completely removed. Small crumble or
stone pieces smaller than 35mm in diameter must not be loaded into the
heater because they will block the air circulation and will cause overheating
and possible heating element damage.
NOTE! Heating element damage due to overheating caused by
wrong kind of stones or stones which were wrongly loaded into the
heater is not covered by the factory warranty.
Before the tower heater is filled with stones, electrician should test
that the heater works. Testing can be done by turning on the heater
for a short time without any stones and verifying that all heating
elements are heating up.
In household use recommended stones are
NOTE: soap stone or other natural
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