Bottom Closure Panel - Carrier 58SMA Operating Instructions Manual

Factory-supplied washable framed filters are shipped in blower
compartment. Determine location for filter and relocate filter
retaining wire if necessary. See Table 1 to determine correct filter
size for desired filter location. Table 1 indicates filter size,
location, and quantity shipped with this furnace. See Fig. 2 for
location and size of bottom and side return-air openings.
Table 1—Filter Information
FURNACE
FILTER SIZE (IN.)*
CASING
Side Return
WIDTH (IN.)
17-1/2 (1) 16 X 25 X 1† (1) 16 X 25 X 1
21 (1) 16 X 25 X 1 (1) 20 X 25 X 1†
24-1/2 (2) 16 X 25 X 1† (1) 24 X 25 X 1
* Filters can be field modified by cutting frame as marked and folding to
desired size. Alternate sizes can be ordered from your distributor or dealer.
† Factory-provided with furnace.
Air delivery above 1800 CFM requires that both sides, a
combination of 1 side and bottom, or bottom only of furnace
be used for return air.
NOTE: Side return-air openings can ONLY be used in UPFLOW
configurations. Install filter(s) as shown in Fig. 20.
WASHABLE
FILTER
Fig. 20—Filter Installed for Side Inlet
Bottom return-air opening may be used with all 4 orientations.
Filter may need to be cut to fit some furnace widths. Install filter
as shown in Fig. 21.
NOTE: Remove and discard bottom closure panel when bottom
inlet is used.
Step 6—Bottom Closure Panel
These furnaces are shipped with bottom enclosure panel installed
in bottom return-air opening. This panel MUST be in place when
side return air is used.
To remove bottom closure panel, perform following:
1. Tilt or raise furnace and remove 2 screws holding front filler
panel. (See Fig. 22.)
2. Rotate front filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall front filler panel and screws.
FILTER TYPE
FRAMED
Bottom Return
Cleanable
Cleanable
Cleanable
FILTER
RETAINER
A93045
1
17 ⁄ -IN. WIDE
2
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
3 "
"
1
24 /
2
1 "
FILTER
SUPPORT
Fig. 21—Bottom Filter Arrangement
FRONT FILLER
PANEL
Fig. 22—Removing Bottom Closure Panel
17
1
24 ⁄ -IN. WIDE
2
CASINGS ONLY:
CUT AND FOLD
FACTORY-PROVIDED
FILTERS AS SHOWN
TO DESIRED SIZE.
WASHABLE
FILTER
FILTER
RETAINER
A96030
BOTTOM
CLOSURE
PANEL
A93047