An integrative thermal source is an electric resistance that runs together with the EQUHI PF heat pump in winter mode. By means of the unit's control, it
is possible to control start-up and switch-off according to the different variables: outdoor air temperature, delay in reaching the set-point set due to a high
thermal load.
Resistance is always activated during the defrost cycle and when DHW production is requested.
When there is a 3-way valve for KVDEV DHW production, the electrical resistance must be placed upstream of the valve, as illustrated in the figure.
It is always recommended to accurately check the electrical power available when integrative electrical resistances are installed.