Temp. Diff. Heating; Temp. Diff. Cooling - Viessmann VITOCAL WPR 300 Service Instructions Manual

7002 Ave. time outside t §
Delivered condition

7003 Temp. diff. heating !

Temperature differential for calculating the heating limit.
The heating limit defines the value of
the outside temperature, below which
central heating commences. This tem-
perature limit results from the set
room temperature minus this tem-
perature differential.
Example:
The set room temperature is 20 °C;
the temperature entered under
"Temp. diff. heating" is 4 K.
Central heating commences if the
long-term average outside tempera-
ture drops below 16 °C (heating limit).
If the long-term average outside tem-
perature exceeds 18 °C (because of
the specified hysteresis of 2 K).cen-
tral heating stops.

7004 Temp. diff. cooling !

Temperature differential for calculating the cooling limit.
(cont.)
3:00 h Setting
A Set room temperature
B Outside temperature (long-term
C Selected value "Temp. diff. heat-
D Heating mode OFF
E Heating mode ON
Menu
& "Device settings"
&
"Programming"
& "System definition"
& "Temp. diff. heating"
Delivered condition
Setting
Control settings - system definition
0:10 to 100:00
h
average)
ing"
4 K
0 to 20 K
77