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Viessmann VITOCAL 250-A Manual

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30
Fig. 9
The procedure is explained using the example of heat-
ing/cooling circuit 1.
Tap the following buttons:
1.
2. "Room climate"
3. Required heating/cooling circuit, e.g. "Heating/
cooling circuit 1"
4. "Heating curve"
5. for the required value for "Slope" and
"Level" respectively
The diagram indicated shows the change in the
"Heating curve" clearly.
6. to confirm
Tips for setting the "Heating curve"
Room temperature behaviour Remedy
The home is too cold during the winter. Set the "Slope" to the next level up.
The home is too warm during the winter. Set the "Slope" to the next level down.
The home is too cold during the spring/autumn and win-
ter.
Set the "Level" to a higher value.
The home is too warm during the spring/autumn and
winter.
Set the "Level" to a lower level.
The home is too cold during the spring/autumn but
warm enough during the winter.
Set the "Slope" to the next level down and "Level" to
a higher value.
The home is too warm during the spring/autumn but
warm enough during the winter.
Set the "Slope" to the next level up and "Level" to a
lower value.
Temporarily adjusting the room temperature
If you wish to adjust the room temperature temporarily,
select the "Extend time phase once" function. This
function is independent of the time program for room
heating/room cooling.
■The rooms will be heated/cooled with the tempera-
ture of the last active time phase for standard room
temperature or comfort room temperature.
■If your contractor has not made alternative adjust-
ments, DHW is heated to the selected DHW temper-
ature first, before room heating/room cooling com-
mences.
■The DHW circulation pump is switched on (if instal-
led).
Switching on "Extend time phase once"
Tap the following buttons:
1. for the required heating/cooling circuit
2.
The temperature of the last active time phase for
standard room temperature or comfort room tem-
perature will be set.
Room heating/room cooling
Setting the heating curve (cont.)
6199646
… 30 …


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