Operating instructions

The changeover of operating mode
remainsactiveaslongasthecontact
remains closed, but no less than the
default duration selected with coding
address F2.
External bloc king
The function External blocking is con-
nected via input aVD of the external
extension.
In coding addr ess 32 you can selec t
the influence the signal Ext. blocking
should have on the c onnected circul a-
tion pumps.
External d emands
The function External demands is
connected v ia input aVD of the exter-
nal extension.
In coding addr ess 34 you can selec t
the influence the signal Ext. demands
should have on the c onnected circul a-
tion pumps.
In coding addr ess 9b, you can se lect
the minimum set boiler water tem-
perature in case of external demand.
Venting program
Note
Close the gas shut-off valve when
operating the venting p rogram.
During the venting program, the circu-
lation pump will be alternately
switched ON and OFF for 30 seconds
respectively over a period of
20 minutes.
The diverter valve is alternately
switched for a certain period towards
heating and DHW operation. The bur-
ner is switched OFF during the vent-
ing program.
The venting program is activated via
coding address 2F:1. The program i s
automatically deactivated after
20 minutes, and t he coding addr ess is
set to 0.
Control functions (cont.)
104
Function description
5692 548 GB