Trane S9V2B040U3PSBB Installer's Manual page 94

F F u u r r n n a a c c e e C C o o m m b b u u s s t t i i o o n n A A i i r r E E x x h h a a u u s s t t O O p p t t i i o o n n s s
1. Remove two 3" plugs on left side of cabinet. To be used for
combustion air exhaust and inlet.
2. Reuse the two 3" plugs to seal the two 3" default openings on the
top of the cabinet.
1. Loosen the clamp holding the 45° elbow. Remove the elbow and
discard.
94 18-CE01D1-1M-EN