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F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n
I I n n s s t t a a l l l l a a t t i i o o n n I I n n s s t t r r u u c c t t i i o o n n s s
1. Remove the bottom plate.
2. Set the furnace on the base inside closet.
3. Install remote filter.
4. Seal per local codes and requirements.
5. Set the furnace on the filter box inside closet.
6. Must have grill present for air.
7. Set the furnace on the ducted pedestal. The ducted
pedestal will use ducted air from a remote location.
8. Install filter at a remote location.
9. Set the furnace on the filter box. The ducted
pedestal will use ducted air from a remote location.
10. Create ducting and set the furnace in place.
11. Match the filter cabinet flush to the back and
bottom sides of the furnace cabinet and secure in
place with screws.
12. Mark the two areas to be cut out for the return air.
13. Cut out the two sections of the cabinet and BAYLIFT
kit to be removed.
14. Attach ducting to the filter box.
15. The ducted pedestal will use ducted air from a
remote location.
16. Using guides, remove the cutout for the side return.
17. Create ducting and set the furnace in place. Use
screws to attach ducting to the furnace cabinet.
18. Seal bottom panel per local codes and
requirements.
19. Seal all other panels per local codes and
requirements.
20. Remove the top plate.
21. Attach the ducting to the top of the furnace.
22. Attach the plenum ducting to the top of the furnace.
23. Attach the filter box to the top of the furnace.
24. Attach ducting.
Return Air Filters
T T y y p p i i c c a a l l U U p p f f l l o o w w R R e e t t u u r r n n A A i i r r F F i i l l t t e e r r I I n n s s t t a a l l l l a a t t i i o o n n s s
Filters are not factory supplied for upflow furnaces.
Filter size needed will be dependent on type of filter
and CFM requirement. Filters must be installed
externally to the unit.
I I m m p p o o r r t t a a n n t t : : It is recommended to transition return
ducting to the same size as the opening. It
is acceptable for return duct or filter frame
to extend forward of the opening but
plastic plugs MUST be installed in any
opening that the duct or filter frame may
cover.
62
Table 23. Upflow Return Air Filters
Furnace Width
17–1/2"
21"
24–1/2"
Note: For upflow furnace models in any configuration, where the
airflow requirement exceeds 1600 CFM - Furnaces will
require return air openings and filters on: (1) both sides,
or (2) one side and the bottom, or (3) just on the bottom.
P P r r e e p p a a r r a a t t i i o o n n f f o o r r U U p p f f l l o o w w B B o o t t t t o o m m a a n n d d S S i i d d e e R R e e t t u u r r n n A A i i r r
F F i i l l t t e e r r I I n n s s t t a a l l l l a a t t i i o o n n s s
All return air duct systems should provide for
installation of return air filters.
1. Determine the appropriate position to set the
furnace in order to connect to existing supply and
return ductwork.
2. For upflow side return installations, remove the
insulation around the opening in the blower
compartment
3. The side panels of the upflow furnace include
locating notches that are used as guides for cutting
an opening for return air, refer to the figure and the
upflow furnace outline drawing for duct connection
dimensions for various furnaces.
4. If a 3/4" flange is to be used for attaching the air
inlet duct, add to cut where indicated by dotted
lines. Cut corners diagonally and bend outward to
form flange.
5. If flanges are not required, and a filter frame is
installed, cut between locating notches as in
illustration.
6. The bottom panel of the upflow furnace must be
removed for bottom return air.
UPFLOW FURNACES ONLY
*
LOCATING
NOTCHES
PROVIDED
*
FOR SIDE
RETURN
CUTOUT
*
*
* SEE OUTLINE DRAWING
Filter
Qty and Size
1 — 16" x 25" x 1"
1 — 20" x 25" x 1"
1 — 24" x 25" x 1"
FRONT
OF FURNACE
S9V2-SVX001-1B-EN
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