Control Functions - Viessmann VITOPEND 200 Installation And Service Instructions Manual

Function description

Control functions

External heating program changeover
The "External heating program changeover" function is connected via the exter-
nal extension input "aVD". Coding address "91" enables the selection, which
heating circuits the heating program changeover should affect:
The heating program changeover affects:
No changeover
Heating circuit without mixer (A1)
Heating circuit with mixer (M2)
Heating circuit without mixer and heating circuit with mixer
With coding address "d5", you can select in which direction the changeover
should be made for each heating circuit:
The heating program changeover affects:
Changeover in the direction of "Constant reduced" or "Con-
stant standby" mode (respectively in accordance with the se-
lected set value)
Changeover towards "Constant heating mode"
The duration of the heating program changeover can be adjusted in coding
address "F2".
The heating program changeover affects:
No heating program changeover
Duration of the heating program changeover 1 to 12 hours
The operating mode changeover remains enabled for as long as the contact
remains closed; However, it remains enabled at least as long as the duration
selected in coding address "F2".
External blocking
The "External blocking" function is
connected via the external extension
input "aVD".
The "External blocking" function stops
the burner.
104
In coding address "32" you can select
the influence the signal "External
blocking" should have on the con-
nected circulation pumps.
Coding
91:0
91:1
91:2
91:3
Coding
d5:0
d5:1
Coding
F2:0
F2:1 to
F2:12