36
36
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
“Off” mode.
By holding the button ( ) down for 8 seconds,
only the central point remains lit on the display, and all boiler
functions are disabled.
Th
e safety functions are not guaranteed
in this mode.
ATTENTION:
in “Stand-by” and “Off ” mode, the
boiler is still powered.
•
“Automatic vent” mode.
When the function is enabled, every
time the boiler is electrically powered, the system automatic
vent function is activated (lasting 8 minutes).
Th
is function is
displayed via a countdown signalled by the indicator (14). During
this period the DHW and CH functions are not active.
Th
e “automatic vent” function can be annulled by pressing the
“
” button.
•
Display operation.
Th
e display lights up while the control
panel is being used; after a set inactivity period, the brightness
decreases.
Th
e lighting mode can be varied via parameter t8 in
the P.C.B. programming menu.
2.4 USING THE BOILER.
Before ignition make sure the heating system is filled with water
and that the manometer
(7)
indicates a pressure of 1
÷
1.2 bar.
- Open the gas cock upstream from the boiler.
- Press the button ( ) until the display switches on. At this point,
the boiler goes to the state previous to switch-off.
- If the boiler is on “Stand-by”, press ( ) again to enable it, oth-
erwise go to the next point.
-
Th
en press the button (
) in sequence and set the boiler in
the summer (
) or winter ( ) position.
•
Summer
( )
:
in this mode the boiler only works to produce
DHW; the temperature is set via the selector (1) and the relative
temperature is shown on the display via the indicator (14).
•
Winter
( )
:
in this mode the boiler works both for producing
domestic hot water and for central heating.
Th
e temperature of
the DHW is always regulated via the selector (1), the heating
temperature is regulated via selector (4) and the relative tem-
perature is shown on the display via the indicator (14).
From this moment the boiler functions automatically. With no
demand for heat (central heating or domestic hot water produc-
tion) the boiler goes to “standby” function, equivalent to the boiler
being powered without presence of
fl
ame. Each time the burner
ignites, the relative symbol (
) is displayed.
•
Operation with Comando Amico Remoto remote control
V2
(
CAR
V2
)
(
Optional
)
. If the CAR
V2
is connected, the (
)
symbol will appear on the display.
Th
e boiler regulation pa-
rameters can be set via the CAR
V2
control panel and the
button remains active on the boiler control panel, along with
( ) for switch-off (“off” mode only) and the display where the
functioning state is shown.
Caution:
if the boiler is switched “off” the CAR
V2
will display
the connection error symbol “ERR
>
CM”, the CAR
V2
is however
powered constantly so as not to lose the stored programs.
•
Operation with optional external probe
(
)
.
In the case of a
system with optional external probe, the boiler
fl
ow temperature
for room central heating is managed by the external probe de-
pending on the external temperature measured (Par. 1.10).
Th
e
fl
ow temperature can be modified by selecting the functioning
curve via the selector switch (4) (or on the CAR
V2
control panel,
if connected to the boiler) selecting a value from “0 to 9”.
With external probe present, the relative symbol (
) will
appear on the display. In the central heating mode, if the tem-
perature of the water contained in the system is su
ffi
cient to heat
the radiators, the boiler can only function with the activation of
the pump.
•
Standby mode.
Press button (6) until the ( ) symbol appears.
Th
e boiler remains active from this moment and the anti-freeze
function, pump anti-block function and 3-way and signalling of
any anomalies is guaranteed.
