9
Installation and Operating Instructions Ahti & Ukko
5. General instructions for users of Ahti and Ukko heaters
Note
Electrical connections may only be carried out by an electrician with valid installation authorization
according to the current regulations. The Ahti and Ukko electric heaters are suitable for use in a family
sauna, one (1) heater per sauna room. Retain the installation and operating instructions for further
reference.
Installation cable
Use rubber cable H07RN-F as a connection cable.
Additional connection options
Control of electric heating with the heater: The electric heating control cable is brought directly
to the heater’s junction box and further to the heater’s terminal block with a rubber cable that is
dimensionally identical to the incoming cable.
NOTE! Failure to observe the connection instructions may result in a risk of fire!
NOTE! Remove all plastic film before using the heater!
6. Things to keep in mind when using the heater
Preheating
Stack the heater stones according to the instructions.
Before you start using the heater, you need to
preheat the heater two consecutive times
(follow the same procedure also when the heater blocks are
replaced). In the first preheating, the heater will be heated for twenty minutes with the temperature
control set to the middle position.
Let the heater cool down completely before the second, 40-minute
preheating session
, in which the temperature control is set to the ¾ position. During preheating, the
resistors may emit fumes, so please ensure that the room is properly ventilated.
Do not throw water
on the heater during preheating
. Always monitor the preheating runs! If preheating is not carried out
in accordance with the instructions, the soapstone warranty will become void.
Sauna room
Always check the sauna room before switching the heater on! Always make sure that the timer has
switched the power off after the set time period!
Temperature control
The temperature is adjusted by means of a mechanical thermostat (see page 11). The actual heating
time depends on the dimensions, structure and thermal insulation of the sauna. The temperature
in the sauna room can be maintained at the desired level with the thermostat. If the temperature of
the sauna room becomes dangerously high for any reason, the overheating protector will switch the
heater’s power off. The cause of overheating must always be investigated. The power can be switched
on again by pressing the overheating protector reset button (see page 4, item 6).