Heating control - user manual
www.solarcontrols.cz
Instructions for the installation and setup
of the device
Page 14 of 58
CONFIGURATION D
Figure 8: Electrical diagram of configuration D. This configuration demonstrates the interconnection of the Heating Control device with
the WATTrouter M system thanks to which the outdoor unit of the heat pump can be used not only for meeting the present heating
needs but also for the very advantageous transformation of excess energy from the photovoltaic power station into heat. The diagram is
based on the connection of configuration C. Heating Control communicates with the WATTrouter by means of the LAN network (the
interconnection is indicated with a bold line only schematically, in practice it will probably always be solved via an external network
router or switch so that both devices can be monitored and configured). The figure also shows two more heating coils connected to the
triac outputs of the WATTrouter. These heating elements are used for the utilization of the excess energy in the storage tank when the
outdoor unit of the heat pump is not in operation or when the excess energy is higher than the present input power of the outdoor unit.
Only 2 coils of the usually three-phase cartridge are shown in the figure, but it is also possible to use a third coil if we connect it, for
example, to the SSR output of the WATTrouter through the solid state relay. When choosing the power supply phases of the individual
heating elements, we should pay attention to the rules specified in the WATTrouter handbook and we must also take into account the
size of the main circuit breaker and the input power and the number of phases of the outdoor unit of the heat pump (contemporaneity).
