Ferroli OMNIA HYBRID C, Installation, Maintenance And User Manual

Page: 84 / 116

84
EN
Cod. 3541T090 - Rev. 00 - 06/2019
MANAGEMENT PARAMETERS HEAT PUMP AND BOILER IN HEATING MODE
13.2 Boiler in substitution of the heat pump
Set T4_H_MIN = external air temperature at which you want to deactivate the heat pump and activate the boiler.
Set T4_AHS_ON to a lower value than T4HMIN.
With external air temperature greater than T4HMIN, the heating of the system is guaranteed by the heat pump only, with temperature lower than T4HMIN the heating
of the system is guaranteed by the boiler only.
See “fig. 171 - Heating with heat pump” on page 85
With external air temperature lower than T4HMIN the heating system is satisfied only by the boiler fig. 172.
Example
:
T4HMIN = -5°C
T4HMAX = 25°C
T4_AHS_ON ≤ -5°C (for convenience it is suggested to set this value to -15°C).
OFF
ON
OFF
ON
-20 Texternal air
RISCALDAMENTO IMPIANTO
CALDAIA IN SOSTITUZIONE ALLA POMPA DI CALORE
Esempio con parametri T4H
MIN
= -5 e T4 AHS ON= -16
25
T4HMAX
-5
T4HMIN
-4
1
BOILER
HE
AT
PUMP
It works only the boiler that will
be activated immediately
It works only
the heat pump
fig. 169 -
☞
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.