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7.4
Setting the DHW setpoint
A CASE: heating only with no external water tank connected - regulation
not applicable
B CASE: heating only with an external water tank managed by a thermo-
stat - regulation not applicable
C CASE: heating only with an external water tank (accessory kit available
by request) managed by a temperature probe - to adjust the temperature
of the domestic hot water stored in the water tank, proceed as follows:
.
5 0 7
or
first press
If no key is pressed for 5 sec, the set value is taken as the new DHW setpoint.
7.5
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 "4.13 Faults and reporting
Reset function
Contact the local Technical Assistance Centre if the release attempts fail
to reactivate normal operation.
10
A
7.6
Temporary switch-off
In the event of temporary absences (weekends, short breaks, etc.) set
the status of the boiler to OFF.
---
While the electrical supply and the fuel supply remain active, the boiler is
protected by the systems:
ƒ 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
ƒ DHW anti-freeze (only with water tank with probe): this function is
activated if the temperature measured by the water tank probe drops
below 5°C. A heat request is generated in this phase, with burner ig-
nition at the minimum output (then maintained until the delivery water
temperature reaches 55°C); the display shows AF2
ƒ circulator anti-locking: The circulator activates every 24 hours of
stop for 30 seconds.
7.7
Switching off for lengthy periods
If the boiler is not used for a long time, the following operations must be
carried out:
ƒ set the OFF status
ƒ set the system's main switch to "off"
ƒ 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.
.
7
0 1
or
second press
set DHW setpoint value in steps of 0.5 °C
".
Res
> 2 sec
A
F 1
A
F 2
7.8
Keyboard lock function
To lock the keys
5 0 8
press again
to unlock
If there is a fault, key 2 remains active to allow the alarm to be reset.
7.9
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 "7.5 Sa-
fety stop
".
10
A
36
.
L c o
+
>2 sec
Res
> 2 sec
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