Green Heating Technology
10
Boiler activation
f
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;
• pressing a third time to set the boiler in Heating Only mode, i.e. for making the boiler working for
CH only, leaving the DHW production OFF. Heating Only mode is recognizable by the presence of
only symbol
on the display;
• at each press of the button
, the boiler cyclically switches from
OFF
to Summer
, to Win-
ter
+
and to Heating Only mode
�
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On Winter mode
+
or Heating Only mode
, when room thermostat demands for heating,
the burner fires up and thanks to the water flow the heating gets transferred to the heaters of the
building.
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On Winter mode
+
, in case of contemporary demand of heating from both DHW storage and
CH, the DHW demand has the priority till the demand finish. Usually, as DHW 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 knob
, 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 op
-
tional Outdoor Temperature Probe Kit is installed, the system temperature is automatically man
-
aged and the use of the knob
is different:
for details, see also "Outdoor Sensor Kit" on page 46.
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Domestic hot water adjustment:
the knob
sets the temperature of the water in the DHW storage
(the value, during the adjustment, is shown on the display under the symbol
). See also "Com-
mands related to Domestic Hot Water" on page 9 about the DHW temperature.
Anti-Legionella function
With regular periodicity the boiler, in Summer or Winter mode, automatically provides for the heating
of the water in the storage, so as to destroy eventual bacteria (expecially
Legionella spp.
) which form in
quiet warm water.
Remark:
the Anti-Legionella function is not active when the boiler is set in
or in Heating
only
mode.
Содержание CITY GLASS 20 FR
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