Harvia SENTIO Professional B2 Instructions D'installation Et Mode D'emploi page 49

Installation instructions, only for experts
5. When there is an optional power booster:
a. Check the control wires ST1, ST2 and ST3.
b. Check the maximum permissible heating output of 3 kW per phase on
the power booster S2-18.
c. Check the maximum permissible heating output of 7 kW per phase on
the power booster S2-18.
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EN