Product Description; Scope Of Delivery; Product Functions; Normal Load - Harvia Sentiotec S2-18 Instructions De Montage Et Mode D'emploi

Instructions for installation

3. Product description

3.1. Scope of delivery

● Power booster
● 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.
When phase alignment is activated, this may result in erroneous control
operations and extended heating times.

3.3. Normal load

The power boosters of the corresponding models can switch the following output:
● S2-18/S2-18S
● S2-30
9 kW
21 kW
p. 5/12
EN