39
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
2.4 USING THE BOILER.
Before ignition make sure the heating system is filled with water
and that the manometer (8) indicates a pressure of 1 - 1.2 bar.
- Open the gas cock upstream from the boiler.
- Press the button “
“ repeatedly to cyclically switch from
“stand-by” ( ) to “summer” (
) and “winter” ( ) mode.
• Summer ( )
: in this mode the boiler functions only to produce
the DHW, the temperature is set via the buttons “
” and the
relative temperature is shown on the display via the indicator
(19). Moreover, the temperature level that can be selected is
shown on the indicator (22).
• Winter
( )
:
in this mode the boiler works both for producing
domestic hot water and for central heating. The DHW temper-
ature is always regulated via the buttons “
“, the central
heating temperature is regulated via the buttons “
“ and
the relative temperature is shown on the display via the indica-
tor (19). Moreover, the temperature level that can be selected is
shown on the indicator (15).
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 flame. Each time the burner
ignites, the relative flame present symbol is displayed (11) with
relative output scale.
•
Operation with Comando Amico Remoto
V2
(CAR
V2
)
(Optional)
. If the CAR
V2
is connected, the (
) symbol will
appear on the display. The boiler regulation parameters can be
set via the CAR
V2
control panel and the reset button (3) remains
active on the boiler control panel, along with the switch-off but-
ton (1) (“off” mode only) and the display where the functioning
state is shown.
N.B.:
if the boiler is put into “off” mode, the “ERR>CM” con-
nection error symbol will appear on the CAR
V2
. The CAR
V2
is
however powered constantly so as not to lose memorised pro-
grams.
•
Aqua Celeris Function (Fig. 35)
. By pressing buttons 4 and
5 simultaneously, the Aqua Celeris function is activated,
which is marked by the switch-on of the text on the display
“
” (20). The enabled function keeps the water contained in
the minim storage tank always hot, thus guaranteeing an almost
instantaneous distribution of domestic hot water.
35
The boiler is supplied as per standard with Aqua Ce-
leris device function deactivated to safeguard energy
consumption.
•
Solar operation (
).
This function is activated automatically
id the boiler detects a probe on the DHW inlet (optional) or if
the “Solar ignition delay” parameter is more than 0 seconds.
During a withdrawal, if the inlet water is hot enough or
if there is “Solar ignition delay” time, the boiler does not
switch on, the D.H.W. withdrawal symbol (
) appears on
the display along with the flashing solar function symbol
(
).
When the water supplied by the solar system is at a temperature
lower than what is set, and if the “Solar ignition delay” time has
elapsed, the boiler switches on. At this point, the solar function
symbol remains permanently on.
•
Operation with optional external probe
(
)
.
In the case of a
system with optional external probe, the boiler flow temperature
for central heating is managed by the external probe depending
on the external temperature measured (Par. 1.11). The flow tem-
perature can be modified by selecting the functioning curve via
the buttons “
“ (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 (12) will appear
on the display. In the central heating mode, if the temperature
of the water contained in the system is sufficient to heat the
radiators, the boiler can only function with the activation of the
pump.
•
“Stand-by” mode.
Press button “
” repeatedly until the
symbol ( ) appears. The boiler remains off from this moment,
though the antifreeze, pump anti-block and 3-way function and
signalling of any anomalies are guaranteed.
•
“Off” mode.
By holding the button “
” down for 8 sec-
onds, the display switches-off and the boiler is off completely.
The safety functions are not guaranteed in this mode.
ATTENTION:
in “Stand-by” and “Off” mode, the boil-
er is to be considered still live. In “Off”
mode, a lit “dot” is displayed in the centre of
the display.
•
Display operation.
The display lights up while the control panel
is being used; after a set inactivity period, the brightness drops
until only the active symbols are displayed. The lighting mode can
be varied via parameter “t8” in the P.C.B. programming menu.
