What does auxiliary heating mean and how is it used?
In most cases solar systems are used as a back-up to conventional heating systems for water heating purposes. Whilst usually idle in the summertime auxiliary heating systems meet in the winter the larger share of the heating demand. Auxiliary electric heaters are often times only used to reduce the use of boiler burners in the summertime. When a solar system is installed auxiliary electric heaters are usually dropped. In fact as electric power is expensive if compared to heating oil and gas users try at least to take advantage of more convenient off-peak electricity (this can be defined in the dialogue box). In Polysun auxiliary electric heating is implemented as an integral part of the tank whilst auxiliary heating with heating oil and gas appears as a separate component. In Polysun operating hours and controllers may be defined just like in actual heating systems to the great possible extent. Controllers are used for this purpose (see below). The amount of heated energy is defined as
