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6 720 887 546 “SM FP_ErP LPP-MPP Europe 2018/05 en”
The LPP unit as a fixed power version, allows through the power selector to switch manually
between power level 1 (right side of burner ON = SV1) to power level 2 (left side of burner ON =
SV2) to power level 3 (both sides ON = SV1 + SV2).
Pict.19 – Schematic view of 3 power levels in LPP
4.6
Heat Exchanger
The copper heat exchanger has a special configuration to ensures sealed combustion and
optimized heat transfer from the flame heat to the water that flows through the copper
pipes.
Pict.20 – Heat exchanger
For its protection and ensuring maximum life time, there is over-heating protection ensured by a
bimetallic thermostat in direct contact with the copper and one thermal fuse around the heat
exchanger.
