Control Functions - Viessmann VITODENS 200-W Service Instructions Manual

Function description

Control functions

External heating program changeover
The "External heating program change-
over" function is connected via external
extension input "aVD". You can select
which heating circuits the heating pro-
gram changeover affects in coding
address "91":
Heating program changeover
No changeover
Heating circuit without mixer A1
Heating circuit with mixer M2
Heating circuit without mixer and heating circuit with mixer
You can select which direction the heat-
ing program changeover takes in coding
address "d5":
Heating program changeover
Changeover towards "Permanently reduced" or "Permanent
standby" mode (subject to the selected set value)
Changeover towards "Constant heating mode"
The duration of the heating program
changeover can be adjusted in coding
address "F2":
Heating program changeover
No heating program changeover
Duration of the heating program changeover 1 to 12 hours
The operating mode changeover
remains active for as long as the contact
remains closed, but at least as long as
the duration selected in coding address
"F2".
98
Code
91:0
91:1
91:2
91:3
Code
d5:0
d5:1
Code
F2:0
F2:1 to
F2:12