20
INS
TALLER
U
SER
M
AINTEN
AN
CE
TECHNI
CI
AN
TECHNI
CAL
D
AT
A
8
The probe must be connected to the boiler terminal board terminals 38 and 20 using electrical cables with section between 0.3 and 1.5
sq.mm.
If the flow temperature probe is used, arrange two separate lines in compliance with current regulations regarding electrical
systems.
It is necessary to activate the temperature control function on the flow probe on the boiler parameter by accessing the Menu with "Ser-
vice" recognition at the path:
Service\Inputs\Configurable input
And setting Configurable inlet = Flow temp
By reading the flow probe, it will be possible to permit the boiler to increase the central heating / C.H. system flow temperature (with re-
spect to the set obtained from the normal management of the central heating / C.H. requests).
The maximum increase can be set on the boiler parameter menu.
To vary the maximum increase value, access the Menu with "Service" credentials to path:
Service\Central Heating\Edit max common flow pr
This parameter setting can vary from 5 to 15°C (default 5°C).
On the display, the central digits will always show the boiler outlet temperature.
With flow probe in correction, it will be higher than the required central heating / C.H. set.
1.12 TEMPERATURE CONTROL SETTING
By setting the parameters in the "Zones/Definition/Regulation" menus (with Service access), it is possible to automatically adjust the flow
temperature of each zone according to the outdoor temperature.
This can be done by enabling the external probe modulation in the menu "Zones/Definition/Regulation" (Default = Yes).
The curves (Fig. 9, 10) show the default settings in the various operating modes available both with external probe and without.
Zone flow temperature in central heating mode / C.H. mode
and external probe modulation enabled
A
B
C
D
E
9
Zone flow temperature in central heating mode / C.H. mode
with external probe absent
or external probe modulation parameter = NO
A
10