26
2-2
2-3
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
2.5 USING THE BOILER.
Before ignition make sure the central heating
system is filled with water and that the manom-
eter (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 press-
ing button “A” repeatedly, the functioning mode
changes and switches from summer functioning
mode ( ) to winter functioning mode ( ).
•
Solar circuit:
the operation of the solar circuit
is completely automatic and does not require
regulation by the user. The function is always
active with the boiler on and must be kept so
in the summer and in the winter. In the case of
faults on the boiler, the solar circuit continues
to function supplying heat to the water ac-
cording to the possibility of the system and the
weather conditions. Putting the boiler in stand-
by (
) disables the solar function preventing
disposal of the heat accumulated. It is therefore
important to have the solar collector covered
by qualified staff.
•
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.
2.4 DESCRIPTION OF FUNCTIONING
STATES
Below find a list of boiler functioning states that
appear on the multifunction display (24) by
means of the indicator (6) with a brief descrip-
tion. Refer to the instruction book for a complete
explanation.
Display (6) Description of functioning states
SUMMER
Summer functioning mode without request in progress.
Boiler in stand-by for domestic hot water request.
WINTER
Winter functioning mode without request in progress.
Boiler in stand-by for domestic hot water or central heating request.
DHW ON
Domestic hot water mode in progress.
Boiler functioning, domestic hot water heating in progress.
CH ON
Central heating mode in progress.
Boiler functioning, central heating in progress.
F3
Antifreeze mode in progress.
Boiler functioning to restore the minimum safety temperature against boiler
freezing.
CAR OFF
Remote Control (Optional) off.
DHW OFF
In the case of use with Super CAR jointly with the opertaion period in reduced
D.H.W. Timer mode, will be displayed DHW OFF and indicators 15 and 2
switch off (see Super CAR instructions manual).
F4
Postventilation in progress.
Fan in function after a request for domestic hot water or central heating in order
to evacuate residual flue gas.
F5
Postcirculation in progress.
Pump in function after a request for domestic hot water or central heating in
order to cool the primary circuit.
P33
With Remote Control (Optional) or room thermostat (TA) (Optional) in block,
the boiler functions all the same in central heating mode. (Can be activated
through menu “M3”. It allows you to activate the central heating even if the
Remote Control or TA are out of order).
STOP
Reset attempts finished
Wait for 1 hour to re-acquire 1 attempt.
(Error code 08).
ERR xx
Anomaly present with relative error code.
The boiler does not work. (see troubleshooting paragraph).
SET
When the domestic hot water temperature selector switch is turned (1 Fig. 2-1) it
displays the control status of the domestic hot water temperature in progress.
SET
When the central heating temperature selector switch is turned (1 Fig. 2-1) it
displays the control status of the boiler flow temperature for room central heat-
ing.
SET
In the presence of the external probe (optional) replace the “SET” item.
The value that appears is the correction of the flow temperature with respect to
the functioning curve set by the external probe. See OFFSET on external probe
graphics (Fig. 1-6).
F8
System deaeration in progress.
During this phase, which lasts 18 hours, the boiler circulator pump is started at
preset intervals, thus allowing deaeration of the central heating system.
F9
Only in the case of use with Super CAR, does it allow to activate the anti-
legionella function, which takes the temperature of the water in the storage tank
to 65°C for 15 minutes. (see Super CAR instruction manual).
SOLAR
Solar function.
The solar function is activated to control just the pump for DHW.
When the solar pump is powered, the display will show the text 'SOLAR', which
may alternate with other function texts in progress.
SOLAR ON
The solar pump functions permanently.
SOLAR OFF
The solar pump stays off.
Adjustment of domestic hot water
Summer mode operation with domestic hot
water heating