56
EN
5.9 Circulation pump
The flow-head performance curve available for the heating
system is shown in the graph below.
RESIDUAL HEAD (mbar)
0
0 800 1000 1200 1400600400200
100
200
300
400
500
FLOW (l/h)
Fig. 19
5.10 Control panel
OFF
RESET
Fig. 20
1
MULTIFUNCTIONAL HEATING DIAL
During normal operation, the heating dial allows:
t
“WINTER mode” (Central Heating and Domestic Hot
Water) to be selected and its setpoint to be set.
l
“SUMMER mode” (Domestic Hot Water only) to be
selected.
6
boiler off with all heat requests excluded. However the
following functions are still on: anti-freeze, pump anti-
seize and 3-way valve.
R
unlock the system after a permanent lockout stoppage.
To reset the system, turn the dial to “
OFF/Reset
”; wait
until the “
RES
” message appears on the display, then
turn the dial back to the previous position.
2
MULTIFUNCTIONAL DHW DIAL
During normal operation, the DHW dial allows:
D
the DHW setpoint to be set.
z
the “chimney sweep function” to be set.
3
SERVICE BUTTONS
>
<
Buttons
>
and
<
(service buttons) are reserved for
Professionally Qualified Personnel who, with the correct
procedures, described in the relevant sections, can carry
out procedures to configure, adjust and calibrate the
boiler-system structure.
4
SERVICE CONNECTOR
Programming connector cover plug.
m
CAUTION
Buttons
>
,
<
and the connector are NOT accessible to the
user but only to Trained Technical Personnel
.
5
DISPLAY
n
“ANTIFREEZE”
. The symbol is shown in Antifreeze
operating mode. When the boiler is switched on, the
symbol
8
or
t
will also appear, depending on the type
of antifreeze in progress (relating to DHW or central
heating).
8
“DOMESTIC HOT WATER”
. This symbol is shown during a
request for DHW; it flashes while the domestic hot water
set point is being selected.
t
“CENTRAL HEATING”
. This symbol stays steadily on
during central heating operation; it flashes while the
central heating set point is being selected.
1
“FLAME PRESENT”
. This symbol stays steadily on during
burner operation, when the system detects a flame is
present.
2
“LOCKOUT” BECAUSE NO FLAME PRESENT
. This symbol
stays steadily on when the system does NOT detect a
flame.
I
“ALARM”
. This indicates that a fault has occurred. The
presence of another symbol specifies the cause that
triggered it (see paragraph "Malfunction codes and
possible solutions".)
7
“TEMPERATURE”
. The temperature is displayed,
expressed in degrees Celsius.
3
“EXTERNAL SENSOR”
. This symbol is shown when
the control board recognises an external sensor is
connected. To modify the curve of the external sensor,
turn the multifunctional heating dial
t
.
k
“WATER PRESSURE”
. This symbol is shown together with
the
I
symbol and indicates there is no water pressure
in the central heating circuit.
c
“CHIMNEY SWEEP”
. This symbol is shown together with
the
I
symbol and indicates that the Chimney sweep
function should be activated.
0
“OVERTEMPERATURE”
. This symbol flashes when
the system temperature reaches an excessive, and
potentially dangerous, level.
6
PRESSURE GAUGE
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