Bottom Closure Panel; Gas Piping - Bryant 355MAV Installation, Start-Up, And Operating Instructions Manual

To remove bottom closure panel, perform following:
1. Tilt or raise furnace and remove 2 screws holding front
filler panel. (See Fig. 26.)
2. Rotate front filler panel downward to release holding tabs.
3. Remove bottom closure panel.
WASHABLE
FILTER
Fig. 24—Filter Installed for Side Inlet
17 1 2 -IN. WIDE
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
3
1
24 /
2
1
FILTER
SUPPORT
Fig. 25—Bottom Filter Arrangement
FILTER
RETAINER
A93045
21-IN. WIDE
CASINGS ONLY:
SUPPORT RODS (3)
EXTEND 1/4" ON EACH
SIDE OF FILTER AND
REST ON CASING FLANGE
WASHABLE
FILTER
FILTER
RETAINER
A00290
4. Reinstall front filler panel and screws.
G. Gas Piping
Gas piping must be installed in accordance with national and local
codes. Refer to NFGC in the U.S. Canadian installations must be
made in accordance with NSCNGPIC and all authorities having
jurisdiction. Gas supply line should be a separate line running
directly from meter to furnace, if possible. Refer to Table 3 for
recommended gas pipe sizing. Risers must be used to connect to
furnace and to meter. Support all gas piping with appropriate
straps, hangers, etc. Use a minimum of 1 hanger every 6 ft. Joint
compound (pipe dope) should be applied sparingly and only to
male threads of joints. Pipe dope must be resistant to propane gas.
TABLE 3—MAXIMUM CAPACITY OF PIPE*
NOMINAL
IRON INTERNAL
PIPE DIAMETER
SIZE
(IN.)
1/2 0.622
3/4 0.824
1 1.049
1-1/4 1.380
1-1/2 1.610
* 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
9-2 NFPA 54-2002.
CAUTION: Connect gas pipe to furnace using a backup
wrench to avoid damaging gas controls.
WARNING: Gas valve shutoff switch MUST be facing
forward or tilted upward. Failure to follow this warning
could result in property damage or death.
WARNING: Never purge a gas line into a combustion
chamber. Never test for gas leaks with an open flame. Use
a commercially available soap solution made specifically
for the detection of leaks to check all connections. A
failure to follow this warning could result in fire, explo-
sion, personal injury, or death.
FRONT FILLER
PANEL
Fig. 26—Removing Bottom Closure Panel
—18—
LENGTH OF PIPE (FT)
(IN.)
10 20 30
175 120 97
360 250 200
680 465 375
1400 950 770
2100 1460 1180
BOTTOM
CLOSURE
PANEL
40 50
82 73
170 151
320 285
660 580
990 900
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