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88-A951X001-1D-EN
Table 4. Return Duct Connections (continued)
Upflow Furnace with Side Return
Important:
Make sure the condensate and thermostat wiring holes
are sealed on the cabinet side with the side return. The
plugs and grommets may need to be changes with those
on the opposite side of the cabinet.
Important:
Make sure not to cut the cabinet in the “No Cut” area.
Note:
Return air on right side with the condensate on the left or return
air on left with the condensate on the right do not require a
transition.
1.
Using guides, remove the cutout for the side return.
2.
Create ducting and set the furnace in place. Use screws to attach
ducting to the furnace cabinet.
Note:
If using a filter box, use a transition, if possible, to attach the
filter box to the furnace cabinet.
3.
Seal bottom panel per local codes and requirements.
4.
Seal all other panels per local codes and requirements.
Use four corner guides
to create cutout
No Cut Area
Upflow Furnace with Two Side Returns
Important:
One of the sides must have a transition to allow the
condensate and thermostat wiring to exit the cabinet.
Important:
If a transition is not a viable option, a hole may be drilled
in the bottom of the cabinet to allow the condensate to
exit. Also, a hole will need to be drilled in the side of the
cabinet for the thermostat wiring to exit.
Important:
Make sure not to cut the cabinet in the “No Cut” area.
Note:
If using one transition, the condensate and thermostat wiring
will exit on the transition side.
1.
Using guides, remove the two cutouts for the side returns.
2.
Create ducting and set the furnace in place. Use screws to attach
ducting to the furnace cabinet.
Note:
If using a filter boxes, use transitions, if possible, to attach the
filter boxes to the furnace cabinet. If transitions are not used,
condensate may exit through the bottom of the furnace.
3.
Seal bottom panel per local codes and requirements.
4.
Seal all other panels per local codes and requirements.
Use four corner guides
to create cutout
No Cut Area
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