51
Please note that the number displayed is a comfort level: 77°F
means it feels hotter, 59°F means it feels colder. Modifications to
this value do not directly change supply temperature but affect the
calculation made to automatically determine its value by modifying
the reference temperature of the system.
It is recommend to adjust the Outdoor Reset Curve (section 11.12)
If this adjustment of 59°F to 77°F is not adequate enough to provide
sufficient comfort.
OUTDOOR RESET CORRECTION
OUTDOOR TEMPERATURE
FL
O
W
TEMPER
ATURE
86 77 68 59 50 41 32 23 14 5 -4
194
176
158
140
122
104
86
68
50
10
20
30
40
50
60
70
80
90
-20
-15
-10
-5
0
5
10
15
20
25
30
(°C)
(°F)
(°C)
(°F)
OUTDOOR TEMPERATURE
DELIVER
Y
TEMPERA
TURE
PROGRAMMABLE TIMER (DAY+NIGHT)
Available if NIGHT COMP parameter is set to function active.
If a programmable timer (day+night selector) is connected to
the boiler.
This feature is useful if a non-programmable thermostat is used,
but night setback is desired.
When the contact is closed, the heat request is made by the delivery
sensor on the basis of the external temperature in order to maintain
the rat
ed ambient temperature at the DAY level 68°F (20 °C). When the
contact opens, it does not stop the heat request but reduces (parallel
shift) the temperature curve to the NIGHT level 61°F (16 °C).
This activates the night mode.
Though supply temperature is automatically calculated by the
boiler, the user may manually override it.
By modifying HEATING on the user interface, the HEATING SET
POINT will no longer be available but just a value that can be set
from +5 to -5 as required. Please note that the number displayed
is a comfort level: +5 means it feels hotter, -5 means it feels colder.
Modifications to this value do not directly change flow temperature
but affect the calculation made to automatically determine its value
by modifying the reference temperature of the system (0 = 68°F
(20°C) for DAY level; 61°F (16°C) for NIGHT level).
NIGHT SETBACK
NIGHT SETBACK
Riduzione notturna PARALLELA
10
20
30
40
50
60
70
80
90
-20
-15
-10
-5
0
5
10
15
20
Temperatura Esterna
Temperatura di
Curva climatica GIORNO
Curva climatica NOTTE
Outdoor reset - DAY
Outdoor reset - NIGHT
OUTDOOR TEMPERATURE
68 59 50 41 32 23 14 5 -4
194
176
158
140
122
104
86
68
50
FL
O
W
TEMPER
ATURE
(°C)
(°F)
(°C)
(°F)
OUTDOOR TEMPERATURE
DELIVER
Y
TEMPERA
TURE
11 .13
Checks during and after the first
commissioning
After start-up, check that the boiler carries out the start-up
procedures and subsequent shut-down properly.
Check the domestic hot water operation by opening a hot water tap
in CH&DHW and DHW ONLY mode.
Check the full stoppage of the boiler by turning off the system’s
main power switch.
After a couple of minutes of continuous operation with the boiler
in DHW ONLY mode and by keeping the domestic hot water tap
open, it will be possible to carry out a combustion check (Refer to
“11.15 Combustion analysis” for details).
11 .14
Converting the boiler gas type
T
he
boiler is factory supplied to use natural gas (gas A). The boiler
can use also LPG (gas E) gas by setting the parameter.
9
WARNING: The boiler may only be converted by qualified
technician. Failure to comply may result in substantial
property damage, severe personal injury or death.
To convert the boiler to LPG (gas E) proceed as follows:
− access the parameter menu as described in “11.11 Access to
the PARAMETER menu” page 47
− select the parameter “GAS TYPE” pressing the “MODE/OK”
button.
GAS T
− the display shows the value of the selected parameter. To modify
it rotate on one of the two knobs.
0
− confirm the parameter value by pressing the “MODE/OK” button.
1
The programming complete, press the “MENU/RESET” button to
exit from the parameter menu and come back to the main page.
The boiler DOES NOT require additional adjustments.
9
WARNING: After conversion apply the new rating plate
contained in the boiler. Failure to do so may result in
substantial property damage, severe personal injury or
death.
