Viessmann Vitoligno 250-S Installation And Service Instructions For Contractors page 68

Connection and wiring diagram
LV plugs
(cont.)
Plug : Buffer cylinder sensor
)
Fig. 50
Assignment Function
1 Buffer cylinder sensor 1 (top)
2 Buffer cylinder sensor 2
3 Buffer cylinder sensor 3
4
—
5
—
6 GND (for all 3 sensors)
Plug aVG : KM BUS
145
Fig. 51
Assignment
1
2
68
9
KM Bus +
KM Bus -
Function
KM BUS +
KM BUS -
9
Additional information
Pt1000
Pt1000
Pt1000
—
—
—
145
Additional information
—
—