Thermador VTI1010P Installation Manual page 6

Wire Diagram
speed 1 (red)
speed 2 (blue)
speed 3 (orange)
speed 4 (brown)
N (white)
PE (green/yellow)
English 4
NOTE: If using a three speed hood, connect
speed 1 (red) , speed 2 (blue) and speed 4
(brown). Cap off speed 3 (orange).