Viessmann Vitodens 222-F B2TA series, Инструкция по установке и обслуживанию

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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.)
5773 216 GB