Raising The Reduced Room Temperature - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Function description
Control functions
(cont.)
Temperature profile 6
60
50
40
30
20
10
1 5 10
Fig. 64 Ends after 21 days.

Raising the reduced room temperature

During operation at reduced room temperature, the
reduced set room temperature can be automatically
raised subject to the outside temperature. The temper-
ature is raised in accordance with the selected heating
curve, and no higher than the standard set room tem-
perature or comfort room temperature. Depending on
which set room temperature will become active in the
next time phase.
Example using the settings in the delivered condition
90
80
70
60
50
40
30
Fig. 65
Heating curve for operation at standard room tem-
A
perature or comfort room temperature
Heating curve for operation at reduced room tem-
B
perature
102
15 20 25 30
Days
10 5 0 -5
Outside temperature in °C
The outside temperature limits for the start and end of
temperature raising can be set in parameters 1139.0
and 1139.1.
A
B
-20
-10 -15