Viessmann Vitoligno 250-S Installation And Service Instructions For Contractors page 67

LV plugs
(cont.)
Plug : Flow temperature sensor
?
Fig. 47
Assignment Function
1 Flow temperature sensor
2 Flow temperature sensor GND
Plug : Return temperature sensor
aJ
Fig. 48
Assignment Function
1 Return temperature sensor
2 Return temperature sensor GND
Plug , and
! aG aNL
Fig. 49
Assignment Function
1 Outside temperature sensor
2 Flue gas temperature sensor
3
—
4 GND (for both sensors)
GND
GND
1
GND
15
Connection and wiring diagram
2
Additional information
Pt1000
—
17
Additional information
Pt1000
—
1
15
169
Additional information
Pt1000
Pt1000
—
—
67