Filter Arrangement; Leveling Legs (If Required); Gas Piping - Bryant 383KAV Installation, Start-Up, And Operating Instructions Manual

unused side return air portion of the furnace casing. DO NOT
connect any portion of return-air duct to back of furnace casing.
V. FILTER ARRANGEMENT
The factory-supplied filter(s) is shipped in the blower compart-
ment. Determine location for the filter and relocate filter retaining
wire if necessary. See Fig. 5 for side return application and Fig. 6
for bottom return application. See Table 3 to determine correct
filter size for desired filter location. Table 3 indicates filter size,
location, and quantity shipped with the furnace.
WASHABLE
FILTER
Fig. 5—Side Filter Arrangement
(Control Removed for Clarity)
For bottom air-return applications, filter may need to be cut to fit
some furnace casing widths. A bottom closure panel is factory
installed in the bottom of the furnace. When bottom return inlet is
desired, remove and discard the bottom closure panel. Two sets of
hardware are needed for furnaces in 24-1/2-in. wide casings using
2 filters for bottom return. All hardware is provided for filter
installation.
WARNING: Never operate unit without a filter or with
filter access door removed. Failure to follow this warning
can cause fire, personal injury, or death.
VI. LEVELING LEGS (IF REQUIRED)
When the furnace is used with side inlet(s) and leveling legs are
required, refer to Fig. 7, and install field-supplied, corrosion-
resistant 5/16-in. machine bolts and nuts.
NOTE: The maximum length of the bolt should not exceed 1-1/2
in.
1. Lay furnace on its back. Locate and drill 5/16-in. diameter
hole in each bottom corner of furnace as shown in Fig. 7.
2. Install nut on bolt and install bolt and nut in hole. (Install
flat washer if desired.)
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.
VII. GAS PIPING
Gas piping must be installed in accordance with national and local
codes. Refer to the current edition of the NFGC. Canadian
installations must be installed in accordance with NSCNGPIC and
all authorities having jurisdiction.
Refer to Table 4 for the recommended gas pipe size. Risers must
be used to connect to the furnace and the meter.
17
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
FILTER
RETAINER
A99278
FURNACE
CASING WIDTH
* Filters can be field modified by cutting to the desired size. Alternate sizes
can be ordered from your distributor or dealer.
† Factory-provided with the furnace.
—7—
⁄
1
-IN. WIDE
2
3 "
"
1
24 /
2
1 "
FILTER
SUPPORT
→Fig. 6—Bottom Filter Arrangement
(Control Removed for Clarity)
TABLE 3—FILTER INFORMATION (IN.)
FILTER SIZE*
Side Return
14-3/16 (1) 16 X 25 X 1† (1) 14 X 25 X 1
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†
CAUTION: If a flexible connector is required or al-
lowed by the authority having jurisdiction, black iron
pipe shall be installed at the gas valve and extend a
minimum of 2 in. outside the furnace casing.
WARNING: Use the proper length of pipes to avoid
stress on the gas control manifold. Failure to follow this
warning can result in a gas leak, causing fire, explosion,
personal injury, or death.
WASHABLE
FILTER
FILTER
RETAINER
A00213
FILTER TYPE
Bottom Return
Cleanable
Cleanable
Cleanable
Cleanable