Installation manual
196
8.12.6
Electrical connection of bivalent heat pump heating systems
Fig. 8.35: Wiring diagram of a wall-mounted heat pump manager for a bivalent system with one heating circuit and
a constantly-regulated or variably-regulated boiler
Constantly regulated boiler
Regulation of the mixer is undertaken by the heat pump manager. If required, it calls for the boiler and adds more hot water until the desired set return temperature
or hot water temperature is reached. The boiler is called via the 2nd heat generator output of the heat pump manager and the mode of operation of the 2nd heat
generator is coded as being “constant".
Variably-regulated boiler
Condensing boilers can also be operated via atmospherically controlled burner regulation. If required, the boiler is called via the 2nd heat generator output, the
mixer is opened fully and the full volume flow is directed via the boiler. The mode of operation of the 2nd heat generator output is coded as being “variable”. The
characteristic heating curve of the burner regulation is set in accordance with the characteristic heating curve of the heat pump.
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