23
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
2.5 USING THE BOILER.
Before ignition make sure the central heating sys-
tem is filled with water and that the manometer
(23) indicates a pressure of 1 - 1.2 bar;
Open the gas cock upstream from the boiler.
With the boiler off, only the Stand-by symbol
(10) appears on the display. By pressing the (
)
button the boiler switches on.
Once the boiler is on, by pressing button “A”
repeatedly, the functioning mode changes and
switches from summer functioning mode (
) to winter functioning mode ( ).
•
Summer ( ):
in this mode the boiler func-
tions only to heat domestic hot water. The
temperature is set using the selector switch (1)
and the relative temperature is shown on the
display (24) by means of the indicator (2) and
the “SET” indication is shown (Fig. 2-2). By
turning the selector switch (1) in a clockwise
direction the temperature increases and in an
anti-clockwise direction it decreases.
During domestic hot water heating, “DHW
ON” is displayed (24) on the status indicator (6)
and at the same time as the burner ignites, the
flame presence indicator switches on (8) with
the relative power scale and the indicator (9 and
7) with the instantaneous outlet temperature
from the primary heat exchanger.
• Winter ( ):
in this mode the boiler func-
tions both for heating domestic hot water and
heating the environment. The temperature
of the domestic hot water is always adjusted
using the selector switch (1), the central heat-
ing temperature is adjusted using the selector
switch (3) and the relative temperature is shown
on the display (24) using the indicator (4) and
the “SET” indication is shown (Fig. 2-4). By
turning the selector switch (3) in a clockwise
direction the temperature increases and in an
anti-clockwise direction it decreases.
Adjustment of domestic hot water
2-2
Summer mode operation with domestic hot
water heating
2-3
During the request for room heating “CH ON”
is displayed (24) on the status indicator (6) and
at the same time as burner ignition the flame
presence indicator switches on (8) with relative
power scale and the indicator (9 and 7) with the
instantaneous outlet temperature from the primary
heat exchanger. In the central heating phase, 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 boiler pump.
•
Operation with Comando Amico Remoto
remote control
V2
(CAR
V2
) (Optional).
In the
event of connection to the CAR
V2
remote con-
trol, the boiler automatically detects the device
and the symbol (
) is displayed. From this
moment onwards all controls and adjustments
are referred to the CAR
V2
. The stand-by button
“
”, the Reset button "C", the menu access
button "D" and the DHW priority button "B"
however remain active on the boiler.
Attention:
If the boiler is put into stand-by
(10) the "CON" connection error symbol will
appear on the CAR
V2
remote control. The
CAR
V2
remote control is however constantly
powered thus stored programs are not lost.
•
Operation with Super Comando Amico
Remoto remote control (Super CAR) (Op-
tional).
In the event of connection to the Super
CAR remote control, the boiler automatically
detects the device and the (
) symbol
appears on the display. From this moment it
is possible to make adjustments indifferently
from the Super CAR remote control or the
boiler. Except for the central heating tempera-
ture that is shown on the display but managed
by the Super CAR remote control.
Attention:
if the boiler is put into stand-by (10)
the “ERR>CM” connection error symbol will
be displayed on the Super CAR. The Super CAR
remote control is however constantly powered
thus stored programs are not lost.
•
Domestic hot water priority function.
By press-
ing button “B” the D.H.W. priority function is
activated, which is marked by the symbol (15)
switching off on the display (24).
Attention:
the disabled function keeps the water
contained in the storage tank at a temperature of
20°C for 1 hour, giving the functioning priority
to room central heating.
Adjustment of the system flow temperature
2-4
Winter operation mode with central heating
2-5
•
Functioning with external probe (Fig. 2-6)
optional.
In the case of a system with optional
external probe, the boiler flow temperature
for room central heating is managed by the
external probe depending on the external tem-
perature measured (Par. 1.5 and par. 3.8 under
item “P66”). It is possible to modify the flow
temperature from -15°C to +15°C with respect
to the adjustment curve (Fig. 1-6 Offset value).
This correction, which can be activated using
selector switch (3) is kept active for any external
temperature measured. The modification of the
offset temperature is displayed via the indicator
(7). The indicator (4) shows the current flow
temperature and after a few seconds from
the modification it is updated with the new
correction. The “SET” indication is displayed
(Fig. 2-6). By turning the selector switch (3) in
a clockwise direction the temperature increases
and in an anti-clockwise direction it decreases.
During the request for room heating “CH ON”
appears on the display (24) on the status indica-
tor (6) and at the same time as burner ignition
the flame presence indicator switches on (8)
with relative power scale and the indicator (9
and 7) with the instantaneous outlet tempera-
ture from the primary heat exchanger. In the
central heating phase, 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 boiler pump.
From this moment the boiler functions automati-
cally. With no demand for heat (central heating
or domestic hot water production) the boiler
goes to “standby” function, equivalent to the
boiler being powered without presence of flame.
N.B.:
The boiler may start-up automatically if the
anti-freeze function is activated (13). Moreover,
the boiler can function for a brief period of time
after a withdrawal of domestic hot water in order
to take the domestic hot water temperature back
into temperature.
Attention:
with the boiler in stand-by mode (
), hot water cannot be produced and the fol-
lowing safety functions are not ensured: pump
anti-block device, antifreeze and three-way
anti-block device.
System flow temperature adjustment with exter-
nal probe(optional)
2-6
Winter operation mode with external probe
(optional)
2-7
