Function Extension 0−10 V - Viessmann Vitotronic 200 KW2 Installation And Service Instructions Manual

Components
Function extension 0−10 V,
To default an additional set system value via a 0−10 V input in the range
10 to 100 ºC or 30 to 120 ºC.
To signal reduced mode and to regulate the heating circuit pump to a lower
speed.
F1
250 mA
(slow)
L1 N
40
230V~
fÖ
Mains power connection
aVF 0−10 V input
aVG KM BUS to control unit
aBJ Zero volt contact
DIP switch
1 ON
2 ON
4 ON
4 OFF
Note
Amongst switches 1 to 3, only one switch may be set to ON.
78
part no. 7174 718
ON
OFF
S Ö P
A
157
Function
Reduced mode
Reduced mode
Set value default 10 to 100 ºC
Set value default 30 to 120 ºC
Electronics
B
1 2 3 4
1 2 3
144
A Mains electrical isolator
(if required)
B DIP switch (see table)
heating circuit A1
mixer circuit M2
1 2 3
+
145