WORLD OF WELLNESS
EN
Instructions for installation
p. 5/12
3. Product description
3.1. Scope of delivery
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Power booster
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Installation accessories
3.2. Product functions
The S2-18 / S2-18S / S2-30 power boosters are used to increase the maximum
switching load of your sauna control unit. The two built-in contactors are used for
switching the mains voltage to the heating system. Contactor K1 (ST1) is used
as a contactor for the safety circuit, and contactor K2 (ST2) as a contactor for
the switching circuit.
When connecting ST2 to one of the heater outputs (U, V or W), the phase align-
ment of the sauna control unit must be disabled.
3.3. Normal load
The power boosters of the corresponding models can switch the following output:
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S2-18/S2-18S
9 kW
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S2-30
21 kW
When phase alignment is activated, this may result in erroneous control
operations and extended heating times.