Ferroli OMNIA HYBRID C, Installation, Maintenance And User Manual

Page: 83 / 116

83
EN
Cod. 3541T090 - Rev. 00 - 06/2019
MANAGEMENT PARAMETERS HEAT PUMP AND BOILER IN HEATING MODE
13. MANAGEMENT PARAMETERS HEAT PUMP AND BOILER IN HEATING MODE
For heating mode it is possible to have two different heat pump and boiler activation logics depending on the parameters indicated in the following table and available
under the “8.2 REMOTE CONTROLLER - SERVICE menù” on page 50.
Parameter DESCRIPTION Parameter Factory setting Reference paragraph
T4HMIN Minimum external air temperature for heat pump heat mode -5°C “8.5 HEAT mode setting” on page 55
T4HMAX Maximum outside air temperature for heat pump heat mode 25°C “8.5 HEAT mode setting” on page 55
T4_AHS_ON External air temperature for boiler activation 2°C “8.10 AHS (bolier)” on page 57
t_ASH_DELAY Boiler activation delay 30 min “8.10 AHS (bolier)” on page 57
13.1 Boiler in integration to the heat pump (factory setting)
With external air temperature greater than (T4_AHS_ON - 2) the system heating is guaranteed by the heat pump only
See “fig. 171 - Heating with heat pump” on page 85
With external air temperature between (T4HMIN) and (T4_AHS_ON - 2) the system heating is guaranteed by the heat pump and the boiler: the boiler will be activated
if after the time (t_AHS_DELAY) the heat pump does not satisfy the setpoint.
See “fig. 173 - Heating with heat pump and boiler” on page 85
With external air temperature lower than T4HMIN the heating system is guaranteed only by the boiler.
Functional diagram with factory settings
-5
T4HMIN
-4
1
-20
OFF
ON
OFF
ON
BOILER
RISCALDAMENTO IMPIANTO
CALDAIA IN INTEGRAZIONE ALLA POMPA DI CALORE
Esempio con parametri T4HMIN= -5 e T4_AHS_ON= 2
0
T4_AHS_ON - 2
2
T4_AHS_ON
Texternal air
25
T4HMAX
It works only the boiler that will
be activated immediately
The boiler is activated in integration to the
heat pump after time t_AHS_DELAY (default 30 min)
It works only
the heat pump
HE
AT
PUMP
fig. 168 -
☞
NOTE:
To optimize the energy efficiency of the boiler it is suggested to set the boiler heating setpoint to the same value as the heat pump set point.