Vaillant VRT-PZA Mode D'emploi page 28

A Operating instructions – 5 Programming heating periods
5.1 Indicating the heating programme
Up to three heating periods per day can be entered in
your room thermostat. It is only necessary to set the
time for the beginning and the end of the respective
heating periods. The heating periods can be
programmed differently for every day of the week.
The chronological sequence of the heating periods, the
24-h programme, is indicated with symbols on the
display (3e, fig. 1). The upper horizontal segments
represent the heating periods, the lower segments the
drop periods. The vertical segments represent the
changeover points. Thus, one heating period consists
of a vertical segment for the beginning of the heating
period (fig. 5.1), the upper horizontal segment for the
duration of the heating period and of a vertical
segment for the end of a heating period (fig. 5.2). For
a heating period between 6.00 a.m. to 10.00 p.m.,
only one heating period is necessary. Deleted heating
periods are marked by a line (fig. 5.3).
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5.2 Indicate the heating programme
Press change-over key
the 24-hours programme of the indicated day of the
week (fig. 5.1). Then, the change-over time of the
flashing segment is shown, in fig. 5.1 the beginning of
the first heating period on the 5. day of the week
(Friday) at 6.00 a.m.
Press again change-over key
shows the time of the next change-over point (flash-
ing), in fig. 5.2 the end of the first heating period at
10.00 p.m.
Press day key 1..7 (5) to examine the heating
periods of another day, for example Sunday (fig. 5.4).
In case of altering, set these heating periods according
to chapter 5.4
Press one ofthe keys (6), (8), (9), (11) or (12), the
display shows the normal reading (fig. 5.5).
(Fig. 1, p. 3, 5)
(7), the display shows
(7), the display