ECO ULTRA Electric Boiler
Installation, Use and Care Manual
(Revision June 2017)
, Page
15.
Figure 10: Wiring diagram with auxiliary energy source
It is also possible to allow the renewable energy
source to be operated according to its own
controls at all times (do not use the ECO ULTRA
contact of the "
AUX
" terminals) and when the
main renewable energy source is not sufficient to
the request, (closed contact between
E1 & E2
)
the heating elements will be activated according
to the operating parameters of the controller.
External signal
