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Route rain gutter condensate hose to the right of
the inducer motor.
Upflow Furnace in Horizontal Right
Position - Top Vented Combustion Air
Changes need to be made to the inducer orientation
when installing the upflow furnace in the horizontal
right position with the combustion air vented through
the left side. Additional changes are needed for hose
routing, condensate trap location, and inducer port
caps, and the condensate plug.
The below figure shows the furnace as it is sent from
the factory.
Use the following steps to modify the furnace for
horizontal right with left side venting of combustion air.
Before proceeding, lay unit on its back to make the
conversion easier.
1. Remove all drain hoses from condensate trap.
N N o o t t e e : : When removing condensate hoses from the
condensate trap, hold the trap with your hand to
prevent the trap from breaking. Removing the
trap before the hoses is also an option.
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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
2. Remove tubing from PS2 to cold header.
3. Remove drain tubing from bottom of inducer
housing.
4. Remove rain gutter tubing from inducer outlet.
5. Remove tubing from condensate pressure switch.
6. Remove the screws that hold the condensate trap
bracket. The condensate trap should not be
removed from the condensate trap bracket.
Remove assembly and retain for later installation.
7. Remove the adapter located inside the condensate
trap connection on the cold header and retain for
later installation.
N N o o t t e e : : The plastic adapter with O-rings located inside
the cold header that is held in place by the
condensate trap bracket. Do not lose this adapter.
This adapter needs to be in place when the
condensate trap bracket is reattached.
8. Remove 3" plug on right side of unit. To be used for
condensate trap.
9. Install condensate trap grommet.
10. Remove two 3" plugs on left side of cabinet.
11. Reuse the two 3" plugs to seal the two 3" default
openings on the top of the cabinet.
85
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