6
0
5
10
15
20
25
30
0
5
10
15
20
25
30
35
Air suction pipe length (m)
Flue gas pipe length (m)
3.13 Filling and emptying the system
Once the hydraulic connections have been carried out, you can
fi
ll the heating system.
FILLING the heating system
This procedure must be carried out when the system is cold and the boiler is OFF, and
consists of the following operations:
-
open the automatic air vent valve cap (
A
) by two or three turns
-
make sure the cold water inlet tap is open
B
C
A
-
open the
fi
lling tap (
B
) until the pressure indicated by the water pressure gauge is be-
tween 1 and 1.5 bar. Once
fi
lling is complete, close the
fi
lling tap.
b
The safety valve outlet (
C
) must be connected to a suitable collection system. The
manufacturer is not responsible for possible damage due to safety valve operation.
NOTE:
The boiler has an ef
fi
cient air separator so no manual air venting intervention is
needed.
NOTE:
The burner switches on only if the air relief phase is
fi
nished.
EMPTYING the heating system
To empty the system, proceed as follows:
-
switch off the boiler
-
connect the hose supplied as standard to the boiler drain valve (
C
)
-
loosen the boiler drain valve (
C
)
-
open the air vent valve to allow continuous air venting
-
drain the lowest points of the system.
3.14
Control panel
RESET
+
+
-
-
MODE
Button functions
Holding down the CH-, CH+, DHW- and DHW+ buttons scrolls the values, while a single press
displays them one by one.
+
-
Heating water (CH) temperature adjustment:
+ increases the CH+ value
- decreases the CH- value
+
-
Domestic hot water (DHW) temperature
adjustment:
+ increases the DHW+ value
- decreases the DHW- value
MODE
Button for selecting summer/winter mode, CH
only and OFF.
Enter Functions mode
RESET
Button for resetting the non-volatile alarm status
(press <1 sec.).
Enable/disable INSTALLER/BOILER
CONFIGURATION mode (press 10 sec.).
Exit Functions mode
RESET
+
MODE
By pressing the RESET and MODE buttons
simultaneously for 5 seconds, it is possible to
enable/disable the combustion analysis mode
(see "4.14 Combustion analysis").
RESET
+
+
-
By pressing the RESET button and the CH+
button (> 3 seconds) in normal operation (NO
lockout), it is possible to enable/disable the
preheating mode.
MODE
+
+
-
Pressing the CH+ and MODE buttons
simultaneously for 5 seconds takes you into the
adjustment procedure
Access for SERVICE
The icon indicates
connection to an OT device
entry into the info menu
CH active,
fl
ashes if CH demand is in progress
DHW function active,
fl
ashes if DHW demand in progress
presence of
fl
ame, in case of
fl
ame lockout the icon shows
need for maintenance (see "4.18 Maintenance indicator (
)")
modulation range, = 0 to 50%,
= 51% to 100%
need for
fi
lling
CH water temperature
DHW temperature sampling
OFF mode
parameter display. See paragraph "4.11 Parameter access
procedure (tS)"
fault display. See paragraph "4.5 Warning lights and faults"
display current function. See paragraph "4.9 Additional functions"
display alarms log. See paragraph "4.13 Alarms log"
• t3: pause time between each ignition attempt
• t4: pause time after alarm reset less than 30 sec.
• t5: pause time after alarm reset more than 30 sec.
