37
3-6
Funzionamento
pompa di calore
Se dopo il tempo di
attivazione non si
raggiunge la temp.
impostata parte
anche la caldaia
Funzionamento
pompa di calore
Se dopo il tempo di
attivazione moltiplicato
per 2 non si raggiunge
la temp. impostata
parte
anche la caldaia
Set Risc
55 °C
Max
Min
Temp
esterna
Te2
25
Te1
-15
Funzionamento
esclusivo
caldaia
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Max
Min
Set Risc
Exclusive boiler
operation
Heat pump opera-
tion
If after activa-
tion time the set
temperature is not
reached,
the boiler
also starts
Heat pump operation
If after activation time
multiplied by 2 the
set temperature is not
reached,
the boiler also
starts
External
temp
3.10 CENTRAL HEATING OPERATION IN
COMBINATION WITH THE HEAT
PUMP.
Following a request during the room heating
mode, the electronics decide, according to the
external temperature, whether to activate the
heat pump, or (with cold or high temperatures)
the boiler (fig. 3-6):
Boiler and heat pump can even operate simulta-
neously: in fact, if only the heat pump is active,
but it cannot bring the water to temperature
within a certain time, the boiler starts in parallel.
The boiler electronics select which heat source
to be used according to the combination of
“MAGIS” parameters.
The heating mode is equipped with a timer that
prevents the generators from restarting too fre-
quently. One can modify this value via parameter
“P69”. The heat pump is equipped with its own
timer that that prevents the frequent start-ups,
set at a fixed value (3 minutes).
Values Te1 and Te2 are determined by the logic of the boiler board
