Carrier 59SC6A Installation Instructions Manual page 22

59SC6A: Installation, Start-up, Operating and Service and Maintenance Instructions
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.
NOTE: Local codes may require a drain pan and condensate trap when
a condensing furnace is installed over a finished ceiling.
Fig. 27 – Working Platform for Attic Installation
ROLLOUT PROTECTION REQUIRED
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.
Fig. 28 – Suspended Furnace Installation
Leveling Legs (If Desired)
In upflow position with side return inlet(s), leveling legs may be used.
See Fig. 29. Install field-supplied, 5/16 x 1-1/2 in. (8 x 38 mm) (max)
corrosion-resistant machine bolts, washers and nuts.
NOTE: Bottom closure must be used when leveling legs are used. It
may be necessary to remove and reinstall bottom closure panel to install
leveling legs. To remove bottom closure panel, see
To install leveling legs:
1. Position furnace on its back. Locate and drill a hole in each bottom
corner of furnace.
2. For each leg, install nut on bolt and then install bolt with nut in
hole. (Install flat washer if desired.)
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
30 IN. (762 mm)
MIN. WORK AREA
2-IN.
COMBUSTION-AIR PIPE
(SEE VENTING SECTION)
2-IN.
(51 mm)
Fig. 24.
3. Install another nut on other side of furnace base. (Install flat washer
if desired.)
4. Adjust outside nut to provide desired height, and tighten inside nut
to secure arrangement.
5. Reinstall bottom closure panel if removed.
(8mm)
A150580
Location Relative to Cooling Equipment
The cooling coil must be installed parallel with, or on the downstream
side of the unit to avoid condensation in the heat exchangers. When
installed parallel with the furnace, dampers or other flow control must
prevent chilled air from entering the furnace. If the dampers are
manually operated, they must be equipped with means to prevent
operation of either unit unless the damper is in the full-heat or full-cool
position.
Platform Furnace Support
Construct working platform at location where all required furnace
clearances are met. See
mm) clearance requirement on side, set furnace on non-combustible
blocks, bricks or angle iron. For crawlspace installations, if the furnace
is not suspended from the floor joists, the ground underneath furnace
must be level and the furnace set on blocks or bricks.
Suspended Furnace Support
The furnace must be supported under the entire length of the furnace
with threaded rod and angle iron. See
bottom of furnace as shown.
Roll-Out Protection
Provide a minimum 12-in. x 22-in. (305 x 559 mm) piece of sheet metal
for flame roll-out protection in front of burner area for furnaces closer
than 12-in. (305 mm) above the combustible deck or suspended furnaces
A150581
closer than 12-in. (305 mm) to joists. The sheet metal MUST extend
underneath the furnace casing by 1-in. (25 mm) with the door removed.
The bottom closure panel on furnaces of widths 17-1/2-in. (445 mm) and
larger may be used for flame roll-out protection when bottom of furnace
is used for return air connection. See
roll-out shield.
22
"
5/ 16
(8mm)
"
5/ 16
"
3
1 /
4
(44mm)
"
3
1 /
4
(44mm)
(8mm)
"
5
/
16
(8mm)
"
5/ 16
"
(44mm) 3/ 4
1
"
3/ 4
1
(44mm)
Fig. 29 – Leveling Legs
Table 2 and Fig. 27. For furnaces with 1-in. (25
Fig. 28. Secure angle iron to
Fig. 27 for proper orientation of
A89014