8
• Refer to the external Control Unit Manual for its installation and connection to the Combi
Heater as well as the installation of the Temperature Sensors.
NOTE: An additional Contactor Unit is needed for 10.5kW, 12.0kW, 15.0kW and 18.0kW Combi
Heaters.
• The Safety Temperature Sensor must be installed directly above the heater, 15cm below the
ceiling. Refer to Figure 7.
2.2.3 Installation of External Control Unit and Sensor
2.2.4 Sensor Location
Auto Refill
9
• When doing a final inspection for the electrical installation of the Combi Heater, a “leakage” may
be detected when measuring the insulation resistance. This is because the insulating material of
the heating resistors has absorbed moisture from the air (during transport and storage). The
moisture will eventually be removed after several uses of the heater.
2.2.5 Effect of Moisture During Transport and Storage
PERSPECTIVE
Fig. 7 Safety Sensor Location
3. Operating Instructions
How to Load the Stones?
Stones are loaded into the Combi Heater so that enough energy will be stored to efficiently
vaporize the water thrown on them and maintain the correct humidity inside the Sauna Room.
These stones must be replaced at least once a year or every 500 hours, whichever, occurs first.
In removing the stones, stone crumbles (small pieces of stones that has broken off from the larger
ones due to frequent usage) must be removed as well.
Refer to the Technical Data in Figure 11 for the required amount of stones.
NOTE: Never use the Combi Heater without the stones as it can cause fire. Use only stones
recommended by SAWO. The use of any other kind of stones may damage the heating elements
and will void your warranty. Also, never use ceramic stones or any other artificial stones.
3.1.
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•
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Before loading the stones into the Combi Heater, rinse them first to remove stains or dust that may
emit unpleasant smell when using the unit for the first time.
Care must be taken in loading the stones and make sure that they will not block the air circulation
through the heater. Refer to Figure 8.
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Fig. 8 How to Load the Stones
