American Standard L8V1A040U3VSAA Installer's Manual page 37

Upflow orientation with left side venting
Important: The combustion air duct MUST be installed on C100
upflow applications. Failure to install will result in
nuisance burner box limit trips.
Note: Future C100 furnaces with the Burner Box limit on the bottom
DO NOT require the Combustion Air Duct.
Before proceeding, lay unit on its back to make the conversion easier.
The following changes need to be made to the inducer when installing
the furnace in upflow position with the combustion air vented out the
left side.
1. Remove the four screws holding the inducer in place.
2. Rotate the inducer so the inducer outlet is pointing towards the 5"
cutout.
3. Secure the inducer in place using the screws removed in step 1.
4. Attach the vent to the inducer outlet.
Note: Self-tapping screws are recommended for attaching the vent
pipe to the inducer outlet.
Upflow orientation with right side venting
Important: The combustion air duct MUST be installed on C100
upflow applications. Failure to install will result in
nuisance burner box limit trips.
Note: Future C100 furnaces with the Burner Box limit on the bottom
DO NOT require the Combustion Air Duct.
Before proceeding, lay unit on its back to make the conversion easier.
The following changes need to be made to the inducer when installing
the furnace in upflow position with the combustion air vented out the
left side.
1. Remove the four screws holding the inducer in place.
2. Rotate the inducer so the inducer outlet is pointing towards the 5"
cutout.
3. Secure the inducer in place using the screws removed in step 1.
4. Attach the vent to the inducer outlet.
Note: Self-tapping screws are recommended for attaching the vent
pipe to the inducer outlet.
Horizontal left orientation with left side venting
No changes need to be made to the inducer when installing the
furnace in upflow position with the combustion air vented through the
top.
Note: Self-tapping screws are recommended for attaching the vent
pipe to the inducer outlet.
18-CE15D1-1C-EN
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
Combustion
Air Duct
Note: C100 Only
Combustion
Air Duct
Note: C100 Only
37