Bryant 393AAV Installation, Start-Up, And Operating Instructions Manual page 7

1
17 ⁄ -IN. WIDE
2
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
3 "
"
1
24 /
2
1 "
FILTER
SUPPORT
Fig. 6—Bottom Filter Arrangement
(Control Removed for Clarity)
TABLE 3—FILTER INFORMATION (IN.)
FILTER SIZE*
FURNACE
CASING WIDTH
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
* Filters can be field modified by cutting the frame as marked and folding to the
desired size. Alternate sizes can be ordered from your distributor or dealer.
† Factory-provided with the furnace.
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.
1
24 ⁄ -IN. WIDE
2
CASINGS ONLY:
CUT AND FOLD
FACTORY-PROVIDED
FILTERS AS SHOWN
TO DESIRED SIZE.
WASHABLE
FILTER
FILTER
RETAINER
A96030
FILTER TYPE
Bottom Return
Cleanable
Cleanable
Cleanable
Cleanable
"
5 ⁄
16
3
1 ⁄
4
"
5
⁄
16
Fig. 7—Leveling Leg Installation
CAUTION: Connect the gas pipe to the furnace using a
backup wrench to avoid damaging furnace gas controls.
WARNING: Never purge a gas line into a combustion
chamber. Never use matches, candles, flame, or other
sources of ignition for the purpose of checking leakage.
Use a soap-and-water solution to check for leakage.
Failure to follow this warning can cause a fire, explosion,
personal injury, or death.
TABLE 4—MAXIMUM CAPACITY OF PIPE*
NOMINAL IRON
PIPE SIZE
(IN.)
1/2
3/4
1
1-1/4
1-1/2
* Cubic ft of gas per hr for gas pressures of 0.5 psig (14-in. wc) or less, and a
pressure drop of 0.5-in. wc (based on a 0.60 specific gravity gas). Ref: Table
10-2 NFPA 54-1996.
Install a sediment trap in the riser leading to the furnace. The trap
can be installed by connecting a tee to the riser leading from the
furnace. Connect a capped nipple into the lower end of the tee. The
capped nipple should extend below the level of the gas controls.
(See Fig. 8.)
Apply joint compound (pipe dope) sparingly and only to the male
threads of each joint. The compound must be resistant to the action
of propane gas.
An accessible manual shutoff valve MUST be installed upstream
of the furnace gas controls and within 72 in. of the furnace. A
1/8-in. NPT plugged tapping, accessible for test gage connection,
MUST be installed immediately upstream of the gas supply
connection to the furnace and downstream of the manual shutoff
valve. Place ground joint union between the gas control manifold
and the manual shutoff valve.
Piping should be pressure tested in accordance with local and
national plumbing and gas codes before the furnace has been
attached. If the furnace has been attached, it is recommended that
—7—
"
5
⁄
16
"
"
3
1 ⁄
4
"
5
⁄
16
"
3
1 ⁄
4
"
3
1 ⁄
4
INTERNAL
LENGTH OF PIPE (FT)
DIAMETER
10 20 30
(IN.)
0.622 175 120 97
0.824 360 250 200
1.049 680 465 375
1.380 1400 950 770
1.610 2100 1460 1180 990 900
A89014
40 50
82 73
170 151
320 285
660 580