36
18-CE16D1-1B-EN
Table 6. Return Duct Connections (continued)
Downflow Furnace with Top Return and Plenum with Filter Box
1.
Remove the top plate.
2.
Attach the filter box to the top of the furnace.
3.
Attach ducting.
4.
Seal per local codes and requirements.
FILTER
F
Fu
urrn
na
acce
e G
Ge
en
ne
erra
all IIn
nsstta
alllla
attiio
on
n