ECO ULTRA Electric Boiler
Installation, Use and Care Manual
(Revision June 2017)
, Page
4.
1.2 BUFFER TANK
The ECO ULTRA boiler optimizes runtimes and
limits on/off cycling of the energy source(s).
When the minimum system load is lower than the
energy source’s minimum capacity, the system
will generate short cycles. This causes premature
wear of the equipment and substantially
decreases the system’s energy efficiency.
1.3 STORAGE TANK
Any hydronic heating system with the ECO
ULTRA stores energy like a battery. When a
demand is made for limited heating (for example,
when there is little difference between indoor and
outdoor temperatures) or when it is used with a
low-capacity energy source, the energy required
will first come from t
he tank’s thermal storage.
1.4 HYDRAULIC SEPARATOR
Adding an ECO ULTRA boiler to a hydronic
heating system helps to evacuate air, eliminates
impurities, and ensures the optimal functioning of
the pumps
—not only for the energy source but
also for the distribution system.
1.5 BACK UP BOILER
The addition of an ECO ULTRA electric boiler to
a hydronic heating system acts as a back-up
source to the main renewable energy system.
The boiler can operate in two modes:
autonomous electrical mode
or
automatic
transfer mode.
For both modes, it is recommended to use the
outdoor sensor supplied with the equipment. The
outdoor
sensor
allows
the
boiler
water
temperature to be modulated according to the
outside temperature. It also makes it possible to
stop the heating of the electric elements when the
outside
temperature
exceeds
a
certain
temperature. The use of these functions makes it
possible to optimize the start-up of the main
renewable energy system.
1.5.1 Autonomous electrical mode
By default, the boiler operates in
autonomous
electrical mode
where, on request of heat, the
ECO ULTRA boiler turns on the distribution
pump, reads the water temperature and activates
the electrical elements according to the
Parameters
of
the
UltraSmart
controller
independently if the main renewable energy
source is on or off.
In addition, for this mode, it is recommended to
adjust the setpoint of the renewable energy
source to a value greater than 10°F to 20°F than
the ECO ULTRA to reduce the start-up of the
electrical elements.
1.5.2 Automatic transfer mode
The boiler can also be operated in the
automatic
transfer mode
, where the ECO ULTRA electric
boiler turns on the distribution pump, reads the
water temperature and activates the electrical
elements if authorized by an external signal. The
elements are then switched on according to the
adjustment parameters of the UltraSmart
controller.
