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13Operating instructions VRC 430f 0020042470_01
08:00 12:00
15 °
20 °
25 °
Room temperature
Time
Period
08:00 12:00
15 °
20 °
25 °
Time
Period
23
4
1
Set back
temperature
Room temperature
Fig. 4.11 Period of validity for changes to the target values
(hier: Target room temperature
The top diagram in Fig. 4.11 shows a programmed time
window (see Section 4.7.1) and corresponding room tar-
get temperature (21 °C).
In the lower diagram, at (1) the value of the room tem-
perature is changed (20 °C). The control system uses
this value until the start of the time window.
From here (2) the control system uses the room tem-
perature of the time window (21 °C).
At (3) the value of the room temperature is changed
(17 °C).
The control system uses this value up to the end of the
time window (4).
After the time window, the control system uses the
night set back temp (15 °C).
h
Note!
This also applies to the hot water target value.
4.5 Operating level for operator,
operating level for expert technician
The VRC 430f controller has two operating levels. Each
level contains several screens in which the various pa-
rameters can be displayed, adjusted or changed.
– Operator level
Used to display and set/change basic parameters. The
setting/changing of parameters can be carried out by
the user without any special previous knowledge and
during normal operation.
Operating level for the heating engineer
Used exclusively by the heating engineer to display
and set/change specific parameters.
4.6 Screens in the Operator level
The screens at the Operator level are arranged
according to the sequence shown in Table 4.4 below.
This table shows you which parameters you can adjust
and change.
Examples of this are given in Section 4.7 and the follow-
ing sections.
You can reach "Basic data", the first screen in the Oper-
ator level, from the default screen:
Click one or both dials.
You get to the basic display.
Turn the left-hand dial by one or two points clock-
wise.
Basic data
1
Date 21. 06. 06
Day of week
We
Time 12 : 00 o'clock
Summer/Winter changeover Auto
> Select day of week
Fig. 4.12 "Basic data" screen (Esample: Selecting the day)
By turning the left-hand dial further you will scroll from
one screen to the next.
If accessory components are installed and are control-
led via the VRC 430f, additional screens apart from
those listed in Table 4.4 can be displayed, e.g.
3 or
6.
Operation 4
13


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