Otto 75928 Notice De Montage page 124

Instructions for installation and use p. 8/32
3. Product description
3.1. Scope of delivery
● Single-component sauna control unit
● Heater sensor with integrated excess temperature fuse (F1), sensor wires 3 m
● Bench sensor (F2), sensor wires 3 m
● Installation accessories
3.2. Product functions
The Modern Bio sauna control unit is used to control and regulate combi sauna
heaters with a heating output of up to 9 kW and an evaporator output of up to
3 kW in the temperature range spanning 40 °C to 125 °C and a humidity range
spanning 0 to 100%.
A power booster allows the maximum contact rating to be increased from 9 kW
to 18 kW or 30 kW.
The sauna control unit functions according to a two-sensor system. The excess
temperature fuse is located in the heater sensor housing. Should the sauna
heater continue heating after reaching the preferred temperature due to a defect,
the excess temperature fuse switches the sauna heater off at a temperature of
approx. 139 °C.
Dry heat is provided in sauna mode. The temperature in the cabin is high (80 to
100 °C). The humidity level is low and does not exceed 10%. If the sauna cabin
temperature is lower than the set temperature, the sauna control unit switches
on the sauna heater. The sauna heater heats up. If the sauna cabin temperature
exceeds the set temperature, the sauna control unit switches off the sauna heater.
WORLD OF WELLNESS