Operating instructions

150
External blocking and fault message input Code
Input DE1 3A:4
Input DE2 3b:4
Input DE3 3C:4
The effect on the internal circulation
pump is selected in coding address
"3E" in group "General".
The effect on the relevant heating circuit
pump is selected in coding address
"d6" in group "Heating circuit".
External demand
The "External demand" function is con-
nected via extension EA1. There are 3
inputs available at extension EA1 (DE1
to DE3).
The function is selected via the following
coding addresses in the "General"
group:
External demand Code
Input DE1 3A:2
Input DE2 3b:2
Input DE3 3C:2
The effect on the internal circulation
pump is selected in coding address
"3F" in group "General".
The effect on the relevant heating circuit
pump is selected in coding address
"d7" in group "Heating circuit".
The minimum set boiler water tempera-
ture in case of external demand is selec-
ted in coding address "9b" in group
"General".
Venting program
During the venting program, the circula-
tion pump will be alternately switched on
and off for 30 s at a time over a period of
20 min.
For a certain period, the diverter valve is
alternately set towards heating and
DHW heating. The burner is switched off
during the venting program.
Activate venting program: See "Venting
the heating system".
Function description
Control functions
(cont.)
5772 909 GB