17
6.2 Setting the heating setpoint
°C
0
0
6
.
°C
0
5
6
.
or
second press
set CH setpoint value in steps of 0.5°C
or
first press
If no key is pressed for 5 sec, the set value is taken as the new heating
setpoint.
6.3 Setting the heating setpoint with an external
probe
If an external probe is connected (optional) and temperature control is
enabled (parameter 418=1
), the delivery temperature value is selected
automatically by the system, which quickly alters the ambient tempera
-
ture on the basis of variations in the outdoor temperature.
Modifying the heating setpoint
°C
5
-
°C
5
or
or
The setpoint correction is in the range (-5 to +5°C).
With parameter 418= 0
, the boiler works with a fixed point
.
6.4 Setting the DHW setpoint
°C
5
0
7
.
°C
0
1
7
.
or
first press
or
second press
set DHW setpoint value in steps of 0.5°C
If no key is pressed for 5 sec, the set value is taken as the new DHW setpoint
.
6.5 Safety stop
If faults arise during ignition or operation, the boiler makes a “SAFETY
STOP”. The display shows the error code in question. For the details,
refer to “3.13 Faults and reporting
”.
Reset function
Contact the local Technical Assistance Centre if the release attempts fail
to reactivate normal operation.
Res
> 2 sec
10
A
6.6 Temporary switch-off
In the event of temporary absences (weekends, short breaks, etc.) set
the status of the boiler to OFF.
F
1
A
F
2
A
---
While the electrical supply and the fuel supply remain active, the boiler is
protected by the systems:
heating anti-freeze:
this function is activated if the temperature
measured by the flow sensor drops below 5°C. A heat request is gen-
erated in this phase, with burner ignition at the minimum output (then
maintained until the delivery water temperature reaches 35°C); the
display shows AF1
DHW anti-freeze:
this function is activated if the temperature meas-
ured by the domestic hot water probe drops below 5°C. A heat re-
quest is generated in this phase, with burner ignition at the minimum
output (then maintained until the delivery water temperature reaches
55°C); the display shows AF2
circulator anti-locking:
The circulator activates every 24 hours of
stop for 30 seconds.
6.7
Switching off for lengthy periods
If the boiler is not used for a long time, the following operations must be
carried out:
set the OFF status
set the system’s main switch to “off”
turn off the fuel and water taps of the heating and domestic hot water
system.
In this case, the anti-freeze and anti-blocking systems are deactivated.
Drain the heating and domestic water system if there is any risk of freezing.
6.8 Keyboard lock function
To lock the keys
L c
o
°C
5
0
8
.
+
>2 sec
press again
to unlock
If there is a fault, key 2 remains active to allow the alarm to be reset
.
6.9 Alarm history
The alarm history is active with parameter 701=1 (SERVICE).
Alarms can be viewed:
- info menu (from I039 to I043), in chronological order, from the most recent
to the oldest, up to a maximum of 5
- on OT+ remote control, if connected.
When an alarm occurs several times in a row, it is stored only once.
To reset the alarm, follow the instructions provided in paragraph
“6.5 Sa-
fety stop
”.
Res
6.10 FEEDER BOTTLE function
The Feeder Bottle function is used to block the value of the DHW set-
point, to prevent anyone from accidentally modifying it
.
From the main screen, after having set the desired DHW setpoint value,
act as follows:
L c
o
°C
5
7
2
.
and
press > 2 sec
To deactivate this function, from the main page:
1
2
3
°C
5
7
2
.
°C
5
7
2
.
L c
o
to deactivate “Loc” press again
press > 2 sec
press
and
