32
Charge level reduction
In addition to fan clearance times, you can also define specific charge
level reductions (Fig. 22). This makes sense if you require less heat on
specific and recurring days of the weeks, for example if you are never
home at the weekends (so that your home requires less heating), or if you
have a weekend home which only requires heavier heating from Fridays to
Sundays. In that event, you can set the target charge level rotary knob to
the required charge level, and use this programme to set a percentage
reduction for those days when less heat is required.
Here, too, you have three selection options (Fig. 23):
a) You can carry out settings manually by pressing ‘OK’. The 'Day' menu
item, and the associated charge level reduction, will appear (Fig. 24).
You can set the day using the + or – buttons, confirm using ‘OK’, and
then define the associated charge level reduction using + or – (from 0
to 70%). Confirm this pair of values using ‘OK’. You can then define fur-
ther days of the week and the associated reductions.
b) You can select the menu item “Preselection, charge reduced pro-
gramme” by pr (Fig.25), and you can then use the + or – but-
ton to select a programme (see Table 3, “Programmes, charge reduce
preselection”). You can adapt these to individual user requirements us-
ing the menu item “OK = Change”, described above.
c) By pressing – you can restore the charge reduced menu's factory set-
ting. This means that both user-defined reductions and preselection
programmes will be deleted.
Once you have defined the reductions (using ‘OK’ or +, Fig. 23) and
wish to reverse them, you can use – to access reduction deletion, and
then use ‘OK’ (Fig. 26) to restore the factory setting for the charge re-
duced programme menu item.
Important!
The charge reduction always relates to the value set using the target
charge level rotary knob. This means that if you set a charge of 75% (third
bar section) at the control unit, and specify a charge reduction of 20% for
one day, the charge will be 60% during the night preceding that day.
Fig.22
Fig.23
Fig.24
Fig.25
Fig.26
Calculation aid:
Target charge level set - (target charge level set x charge level reduction/100) = reduced charge level
I.e. in respect of the example above: 75 - (75 x 20/100) = 60%
Program So Mo Tu We Th Fr Sa
Comment
Pres
1 0% 0% 0% 0% 0%
0%
0%
Standard
Pres 2
0% 30% 30% 30% 30% 30%
0%
The room is not used during working hours (Mo-Fr)
Pres 3
0% 30% 30% 30% 30% 30% 30%
The room is not used during working hours (Mo-Sa)
Pres 4
70%
0%
0%
0%
0%
0% 70%
Office (not used on weekends)
Pres 5
0% 70% 70% 70% 70% 30%
0%
Weekend home (used from Fr-Sa)
Table 3
Charge level reduction, preselection programmes
An activated charge level reduction program is indicated in the standard
display by the square in the bottom right under the minute display (Fig.27
+ Fig.1a).
Fig.27
