Operating instructions

External heating program changeover
The "Ext. heating program changeover" function is connected via the external
extension input "aVD". Coding address "91" enables the selection of which heat-
ing circuits the heating program changeover should affect:
The heating program changeover a ffects: Coding
No changeover 91:0
Heating circuit without mixer (A1) 91:1
Heating circuit with mixer (M2) 91:2
Heating circuit without mixer and heating circuit with mixer 91:3
With coding address "d5", you can select in which direction the changeover
should be made for each heating circuit:
The heating program changeover a ffects: Coding
Changeover in the direction of "Constant reduced" or "Con-
stant standby" mod e (respectively in ac cordance with the se-
lected set value)
d5:0
Changeover towards "Constant heating mode" d5:1
The duration of the heating program changeover can be adjusted in coding
address "F2".
The heating program changeover a ffects: Coding
No heating program changeover F2:0
Duration of the heating program changeover 1 to 12 hours F2:1 to
F2:12
The heating program changeover remains active for as long as the contact
remains closed, in any case at least as long as the duration selected in coding
address "F2".
External bloc king
The "External bl ocking" functio n is
connected via the external extension
input "aVD".
The "External blo cking" function sto ps
the burner.
In coding addr ess "32" you c an select
the influence the signal "External
blocking" should have on the con-
nected circulation pumps.
Control functions
99
Function description
5692 619 GB