Beretta Power Plus Box 150, Руководство по установке, Страница: 17 / 60

17
Functional notes
The
Power Plus Box
modular system control panel manag-
es:
- The DHW priority function which, in the case of a
DHW demand, the master card can also serve the
high or low temperature circuit.
- The anti-freeze function, also active in stand-by mode,
which starts the high temperature circuit circulator
and the loop circulator if the manifold temperature
drops below 5°C. If there is an outdoor sensor, the
circulators turn on if the outdoor temperature drops
below 3°C. If after 10 minutes the manifold tempera-
ture is less than 5°C, a burner turns on at maximum
power until the manifold temperature reaches 20°C.
If after 10 minutes the manifold temperature exceeds
5°C but the outdoor temperature is lower than 3°C the
circulators remain active until the outdoor tempera-
ture goes above that value.
- The cascade management function: to manage the
power delivered by the system, it is possible to se-
lect between the minimum and maximum quantity of
lit burners.
- The exhaust function: the high and low temperature
circuit pumps remain in operation for 5 minutes after
the last burner is turned off. The waiting time before
the heating element circulator is stopped once the
burner is shut off is 6 minutes. When the last burner
is turned off, the circulator only stops when the room
thermostat demand stops.
- The ignition/shut-off control function: in both cascad-
ing management modes there is a burner ignition and
shut-off limitation function in the case of low heat de-
mand.
- The system anti-freeze protection function: the
Pow-
er Plus Box condensing systems are equipped with
freeze protection electronics. The electronics activate
the heating unit if the temperature drops below the
minimum threshold. Therefore the use of particular
anti-freeze fluids are not necessary except in the
case of uses with the equipment completely shut off
for long periods. If using anti-freeze fluids make sure
they are not aggressive for steel.
1 13 User interface (master)
The
Power Plus Box
system control panel buttons have different functions depending on the mode. For example, a combi-
nation of two buttons corresponds to a single function. Or a function is activated by pressing the button briefly or waiting
approx. 5 seconds.
Reset
Serves to release the electric board after a permanent ar-
rest
Set/esc
Set
: makes is possible to enter the parameter change mode
and monitor mode for the single units
This is used to view the operating status of the various cir-
cuits managed by the Master card
and
Are used to increase or decrease a certain value
OK
Press to memorize new values