International comfort products C Series Installation Instructions Manual page 25

INSTALLATION INSTRUCTIONS
Figure 27 Suspended Furnace Installation
Install 12" x 22" (204 x 559 mm) sheet metal in front of and above the burner compartment area.
The sheet metal MUST extend above the furnace casing by 1-in. (25 mm with the door removed.
A 1-in. (25 mm) clearance minimum between top of furnace and combustible material is required.
The entire length of furnace must be supported when furnace is used in horizontal position to
ensure proper drainage.
NOTE: FURNACE SHOWN IS A DIRECT-VENT APPLICATION. REFER TO THE VENTING SECTION FOR
ALLOWABLE VENT CONFIGURATIONS.
NOTE: Local codes may require a drain pan and condensate trap when a condensing furnace is installed over a finished
ceiling.
Figure 28 Working Platform for Attic Installation
NOTE: Local codes may require a drain pan and condensate trap when a condensing furnace is installed over a finished
ceiling.
440 01 4104 07
ROLLOUT PROTECTION REQUIRED
COMBUSTION - AIR PIPE
(SEE VENTING SECTION)
(51 mm)
ROLLOUT PROTECTION REQUIRED
Install 12" x 22" (305x559 mm) sheet metal in front of burner compartment
area. The sheet metal MUST extend underneath the furnace casing by 1-in.
(25 mm) with the door removed. The bottom closure panel may be used for
flame roll-out protection when bottom of furnace is used for return air connection.
Specifications subject to change without notice.
COMBUSTION-AIR PIPE
(SEE VENTING SECTION)
2-IN.
(51 mm)
2-IN.
Gas Furnace: N9MSB
30 IN. (762 mm)
MIN. WORK AREA
A150581
A150580
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