Combustion Air Conversions - Trane 8B1A026M2PSAB Installer's Manual

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 Conversions

Important: After deciding the orientation of the flue outlet, cut the
metal tabs around the appropriate 5" metal cutout on the
furnace cabinet and remove the cutout, if necessary.
Note: When rotating the inducer it may be necessary to cut the wire
tie. A new wire tie must be installed once the inducer is rotated.
Note: Self-tapping screws are recommended for attaching the vent
pipe to the inducer outlet.
Upflow orientation with top venting
No changes need to be made to the inducer when installing the
furnace in upflow position when vented through the top.
Note: Self-tapping screws are recommended for attaching the vent
pipe to the inducer outlet.
Upflow orientation with left side venting
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.
Note: When rotating the inducer it may be necessary to cut the wire
tie. A new wire tie must be installed once the inducer is rotated.
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
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.
48
Pressure Switch locations
S8B1/S8X1: PS is connected to the hot header.
S8X2: PS1 is connected to the inducer. PS2 is connected to the hot
header.
18-CE14D1-1A-EN