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4 different boiler modulation levels may be shown on the
display of the climate controller during boiler operation, as
indicated in figure 2:
3.2 DESCRIPTION OF BUTTON
Press this button to set the following boiler operating modes:
• SUMMER
• WINTER
• HEATING ONLY
• OFF
In SUMMER mode, the display shows (
enabled (ambient frost protection function active).
In WINTER mode, the display shows
frost protection function active).
In HEATING ONLY mode, the display shows
protection function active).
In OFF mode, the display shows neither of the above two symbols (
tection function is active while requests for DHW and central heating are not satisfied.
3.3 DESCRIPTION OF BUTTON
Press this key to set one of the following heating functions: AUTOMATIC-MANUAL-OFF as described below.
AUTOMATIC (symbol shown
This function enables hourly central heating programming of the boiler. The heat request depends on the set hourly pro-
gramming (COMFORT " " ambient temperature or reduced ambient temperature " "). See section 3.6 for the setting of
the hourly programming.
MANUAL (symbol shown
This function disables hourly programming and the boiler works in heating mode at the ambient temperature set by means
of the +/-
buttons.
OFF (symbol shown
)
When the climate controller is set "Off", the display shows the symbol
ambient frost protection function is active).
INSTRUCTIONS FOR USERS
3.1 MEANING OF THE SYMBOL
). The boiler satisfies requests for DHW only while central heating is NOT
. The boiler satisfies requests for both DHW and central heating (ambient
. The boiler satisfies requests for central heating only (ambient frost
)
)
Figure 2
(Summer - Winter - Heating only - Off)
) (
). In this mode, only the ambient frost pro-
(AUTOMATIC-MANUAL-OFF)
and operation in heating mode is disabled (the
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