A
PLENUM
OPENING
B
FLOOR
OPENING
C
Fig. 21 - - Floor and Plenum Opening Dimensions
Fig. 23 - - Furnace, Plenum, and Coil Assembly or Coil Box Installed on a Combustible Floor
D
A96283
FURNACE
APPROVED
COIL ASSEMBLY
OR
COIL BOX
COMBUSTIBLE
FLOORING
SHEET METAL
PLENUM
FLOOR
OPENING
22
FURNACE
(OR OTHER MANUFACTURER'S
COIL CASING WHEN USED)
COMBUSTIBLE
FLOORING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
Fig. 22 - - Furnace, Plenum, and Subbase Installed
on a Combustible Floor
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