4
KEY
A Pressure gauge
B Summer/WinterSelector+Room
heating temperature regulator
(request from ON-OFF thermostat)
C Domestichotwatertemperatureregulator
D Unblock/calibration/diagnosisbutton
E Information display
F Heating function active
G Domestichotwaterfunctionactive
I Block symbol
L Burner in operation symbol
Via this knob it is possible to se-
lect the operating mode:
Summer (domestic hot water pro-
duction only)
The knob in position
(Summer)
indicatesthatheatingisexcluded
and that the antifreeze function
stays active.
Winter (domestic hot water pro-
duction and heating temperature
adjustment).
Positioning theknobinthe eld
shown to the side, indicates that
theboilerisin"Winter"mode,and
adjusts the temperature of the
heating circuit water.
The adjustment is between min.
45°Candmax78°C.
regulator
Via this knob it is possible to ad-
just the domestic hot water inlet
temperature:
Positioning theknobin the eld
indicated at the side, adjusts the
DHWtemperature.
The adjustment is between min.
35°Candmax57°C.
®
0
1
2
3
4
bar
MAX
M
I
N
MAX
MIN
bar
service
E
A
D
D
B
C
E
A
bar
service
G
N
I
L
F
M
M Fault symbol
N Temperature of fault code indication
Attention! The adjustment refers to the
request from the ON-OFF thermostat.
The temperature requested through the
OT input (Open therm) must be set on
the Regola Facile (maximum heating
temperature) and it is independent from
theposition of the knob, except for
“Winter”modeenabling.
MAX
MIN
MAX
M
I
N
MAX
I
N
MAX
M
I
N