21
CS.ECO-TFT.IST-1-EN / Rev 1.0
ENGLISH
➢
5 = Hybrid system = Boiler paired with a heat pump, both connected to a centralised puffer.
Plant ty
pe “
5
” involves the hybrid operation of the “Boiler / Heat Pump”, both connected to a supplied centralised puffer managed through
a temperature
sensor connected to the terminal located inside the technical compartment of the boiler and of the heat pump
(se
e “Plant Type 5 layout
-
hybrid” and
“Plant Type 5 wiring diagram
-
hybrid”)
.
For the heating system, one or more room thermostats
–
connected to the relevant terminal inside the boiler’s technical compartment –
are connected
to the boiler. The
boiler controls the consent of the “P2” heating circulator pump on the basis of the room thermostat demand.
DHW is produced by means of a dedicated heat exchanger inside the puffer and managed with a priority demand from the flow switch or temperature
sen
sor, both connected to the terminal block fitted inside the boiler. In the event of a flow switch request, consent to the “P2” heating circulator pump
is interrupted and the domestic hot water power is activated on both the boiler and the heat pump.
For operation with a single generator, proceed as follows:
➢
Operation with
PELLET-FIRED BOILER ONLY
Set OFF on the heat pump display or set “Menu 12 –
HEAT PUMP = OFF” on the boiler display.
➢
Operation with
HEAT PUMP ONLY
Set OFF on the boiler display and “Menu
12
–
HEAT PUMP = ON”. Do not disconnect the power supply to the boiler as the system’s
management is guaranteed by the electronics mounted on the boiler itself.
For operation in hybrid mode, by setting ON on the display of both generators (boiler and heat pump), the system will be self-managed in the following
modes:
➢
Space heating system managed with
LOW TEMPERATURE
(Sub-menu M09-5 / 5.4
–
SYSTEM TEMP. = 55°C)
SET PUFFER (T. of PUFFER or FLOW SWITCH or THERMOSTAT in demand)
OUTDOOR T. > 5°C
OUTDOOR T. < 5°C
HEAT PUMP
PELLET-FIRED BOILER
➢
Space heating system managed with
HIGH TEMPERATURE
(Sub-menu M09-5 / 5.4
–
SYSTEM TEMP. = 75°C)
SET DHW PUFFER (T. of PUFFER or FLOW SWITCH in
demand)
SET HEATING PUFFER (ROOM THERMOSTAT in demand)
OUTDOOR T. > 5°C
OUTDOOR T. < 5°C
OUTDOOR T. > 5°C
OUTDOOR T. < 5°C
HEAT PUMP
PELLET-FIRED BOILER
PELLET-FIRED BOILER
PELLET-FIRED BOILER
In case of an alarm, the alternative generator is forcedly started up even in unfavourable conditions.
SET PUFFER
P1 : Boiler Circulator Pump
P2 : Plant circulator pump
SC : Boiler Sensor
SB1 : Puffer Sensor
TA : Room Thermostat
FS : Flow switch
PC1 : Consent from Heat Pump
PC2 : Consent to Heat Pump
