Viessmann Vitoligno 250-S Installation And Service Instructions For Contractors page 16

Installation sequence
Electrical connections
Overview of lower connector strip
Θ
A B
Fig. 6 Overview of electrical connections, lower plug-in strip
Plug : Outside temperature sensor
A !
Plug : N/A
B aVH
C Plug aG : Flue gas temperature sensor
Plug A: Hall sensor, flue gas fan
D a¢Ö
Plug A: External fault message
E gÖ
Plug : Flue gas fan
F a¢Ö
Electrical connection
Plug : KM BUS for extension kits
aVG
Fig. 7
For extension kit installation:
Extension kit installation instructions
For mixer module settings:
See page 20.
16
(cont.)
L
B R
Θ
- +
W N
C D
145
M
1~
E F