3
DIGITAL WEEKLY CLOCK
Fig. 2
Button/Icon Main Function Secondary Function
Used to set/adjust
time of day, and
day of week
N/A
Use to “advance”
the heating to an
ON period
Use to increase values when
setting clock & day of week.
Use to program ON periods
for heating pattern.
Use to “advance”
the heating to an
OFF period
Use to decrease values
when setting clock & day of
week. Use to program OFF
periods for heating pattern.
Use to change
mode of operation
Use when installing a user
defined heating program.
Symbol/Icon
Description/Function
Used to show current day of week
(flashing)
Displayed when the ADVANCE-ON fun-
ction is active
Displayed when the ADVANCE-OFF fun-
ction is active
Displays current minutes past the hour
Displays current hour of the day
24-hour clock in 30 minute segments; lar-
ge segments represent hour mark, small
segments represent half-past the hour;
flashing segment represents actual time
Symbol/Icon Description
Displayed when heating mode is active
Displayed when hot water mode is active
Displayed when frost protection function is ac-
tive
Displayed when hot-water pre-heat function is
enabled. Flashes when functioning
Displayed if an alarm or fault has been detected
Displayed when low system pressure has been
detected
Displayed when an external sensor is connected
to the boiler
Displayed if an ignition fault has been detected
Displayed when the burner is ON
Summary of Contents for Vision 25C
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