Fenix Therm 105 - Manual (Page 30)

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The overheating protection is adjusted here.
The adjustment of the regulating
function, must be done by a qualified
electrician. The knob and the front first
have to be removed. Disconnect from
power supply before removing.
Then slide the control to the required
position using a small screwdriver.
The regulating function is adjusted here.
F - Floor thermostat R - Room thermostat
R&F - Room and floor thermostat