A
PLENUM
OPENING
B
FLOOR
OPENING
C
Fig. 19 - - Floor and Plenum Opening Dimensions
FURNACE
(OR OTHER MANUFACTURER S
COIL CASING WHEN USED)
COMBUSTIBLE
FLOORING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
Fig. 20 - - Furnace, Plenum, and Subbase Installed on a
Combustible Floor
D
A96283
A07585
FURNACE
FACTORY SUPPLIED
CASED COIL OR COIL BOX
COMBUSTIBLE
FLOORING
SHEET METAL
PLENUM
FLOOR
OPENING
Fig. 21 - - Furnace, Plenum, and Coil Assembly or Coil Box
Installed on a Combustible Floor
PERFORATED
DISCHARGE DUCT
FLANGE
Fig. 22 - - Duct Flanges
17
A07586
NO
YES
210¡
MIN
YES
A93029
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