Minimum Clearances To Combustible Materials; Minimum Clearances To Combustibles Materials For Air Return Duct; Minimum Clearances To Combustibles Materials For Hot Air Plenum - CADDY PF01015 Installation And Operating Instructions Manual

14.7.1. MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS

14.7.2. MINIMUM CLEARANCES TO COMBUSTIBLES MATERIALS FOR AIR RETURN DUCT

The return air duct should be at least equal in size to the return air plenum. The air return duct can be installed at zero
clearance to combustibles.

14.7.3. MINIMUM CLEARANCES TO COMBUSTIBLES MATERIALS FOR HOT AIR PLENUM

Plenums installed on the furnace must be made of metal in accordance with NFPA 90B, 2-1.3. The hot air duct can be
passed through the side wall with a clearance of six (6) inches around thereof.
MINIMUM CLEARANCES
A 24" (610 mm)
B 18" (458 mm)
C 6" (153 mm)
D 1" (26 mm)
E 72" (1 829 mm)
F 18" (458 mm)
G 8" (204 mm)
H 6" (153 mm)
I 24" (610 mm)
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