Green Heating Technology
10
Typical use
Preliminary operations
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Be sure the gas cock is opened.
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Be sure the boiler is electrically powered and set in
OFF
: only
OFF
has to be displayed on the screen.
Boiler activation
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Press the button
:
• once to set the boiler in summer mode only (DHW only). Summer mode is recognizable by the
only symbol presence
on the display and not by the symbol presence
;
•
pressing twice to set the boiler in winter mode for making the boiler working both for CH and
DHW. Winter mode is recognizable by the both symbols presence
and
on the display;
• press it one time further to set the boiler in Central Heating-only mode, which means to disable
the DHW storage heating by the boiler, provided that the solar system to the storage and the
anti-freeze functions remain active. The CH-only mode is recognizable by the only symbol pres
-
ence
on the display and not by the symbol presence
;
• press it one time further to set the boiler in Central Heating-only mode, which means to disable
the DHW storage heating (only the relevant anti-freeze function remains active). The CH-only
mode is recognizable by the only symbol presence
on the display and not by the symbol
presence
;
• at each press of the button
, the boiler cyclically switches from
OFF
to Summer
to win-
ter
+
and to CH-only
mode.
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On winter mode
+
, when room thermostat demands for heating, the burner fires up and
thanks to the water flow the heating get transferred. In case of contemporary demand of both DHW
storage heating and CH, the DHW demand has the priority till the storage gets heated. Usually, as
DHW storage heating does not last for long, this priority does not affect the CH efficiency in the
system.
Temperature adjustment
Note: correct adjustment leads to creating the conditions for energy saving.
Note:
if a Low Temperature Kit or an Outdoor Probe Kit are installed, refer to the relevant documen-
tation for what concerns the heating system temperature adjustment.
Note: don't make confusion between the heating system temperature
here described, with the
temperature of the room set on the Room Thermostat.
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Heating system adjustment:
by using the buttons
and
, the setting of the heating
system temperature is made (the value, during the adjustment, is shown on the display under the
symbol
). Generally, in the deep cold season and/or with poor building thermal insulation (or
if you notice that the burner stays on for a long time, but the room temperature rises too slowly)
prefer higher settings. On the contrary, if you notice that the room temperature exceeds too much,
for thermal inertia, the value set on the room temperature, it's appropriate to decrease the system
temperature.
When the optional Outdoor Temperature Probe Kit is installed, the system tempera
-
ture is automatically managed and the use of the buttons
and
is different:
for details,
see also "Outdoor Sensor Kit" on page 59.
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Domestic hot water adjustment: the temperature of the DHW out of the boiler is adjusted by the
suitable hand knob of the hand mixing valve, located on the back connections plate and accessible
through the bach right door.
