Bryant 355AAV Installation Instructions Manual page 25

WASHABLE
FILTER
Fig. 27 - - Filter Installed for Side Inlet
⁄
1
17 -IN. (444mm) WIDE
2
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
3 "
(76mm)
"
1
24 /
2
(533mm)
1 "
(25.4mm)
FILTER
SUPPORT
Fig. 28 - - Bottom Filter Arrangement
NOTE: Remove and discard bottom closure panel when bottom
inlet is used.
FILTER
RETAINER
A93045
21-IN. (533mm) WIDE
CASINGS ONLY:
SUPPORT RODS (3)
EXTEND 1/4" (6mm) ON
EACH SIDE OF FILTER AND
REST ON CASING FLANGE
WASHABLE
FILTER
FILTER
RETAINER
A00290
Step 6 — Bottom Closure Panel
These furnaces are shipped with bottom closure 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. 29.)
2. Rotate front filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall front filler panel and screws.
Step 7 — Gas Piping
Gas piping must be installed in accordance with national and local
codes. Refer to NFGC NFPA54/ANSI Z2223.1- -2006 in the U.S.
Canadian installations must be made in accordance with
CAN/CSA- -B149.1- -05 and all authorities having jurisdiction. Gas
supply line should be a separate line running directly from meter to
furnace, if possible. Refer to Table 5 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. (1.8 M). Joint compound (pipe
dope) should be applied sparingly and only to male threads of
joints. Pipe dope must be resistant to propane gas.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in fire, explosion,
personal injury or death.
- - Connect gas pipe to furnace using a backup wrench to avoid
damaging gas controls.
- - Gas valve shutoff switch MUST be facing forward or tilted
upward.
- - 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.
- - Use proper length of pipe to avoid stress on gas control
manifold.
- - If a flexible connector is required or allowed by authority
having jurisdiction, black iron pipe shall be installed at furnace
gas valve and extend a minimum of 2 in. (51 mm) outside
furnace casing.
- -Protect gas valve from water and debris. Gas valve inlet
and/or inlet piping must remain capped until gas supply line is
permanently installed to protect the valve from moisture and
debris. Also, install a sediment trap in the gas supply piping at
the inlet to the gas valve.
Install a sediment trap in riser leading to furnace. Trap can be
installed by connecting a tee to riser leading to furnace so
straight- -through section of tee is vertical. Then connect a capped
nipple into lower end of tee. Capped nipple should extend below
level of gas controls. Place a ground joint union between gas
control manifold and manual gas shutoff valve. (See Fig. 30.)
An accessible manual shutoff valve MUST be installed external to
furnace casing and within 6 ft. (1.8 M) of furnace. A 1/8- -in. (3
mm) NPT plugged tapping, accessible for test gauge connection,
MUST be installed immediately upstream of gas supply connection
to furnace and downstream of manual shutoff valve.
Gas line grommet (factory- -supplied loose parts bag) should be
used when installing gas piping. Gas line entry hole filler plug
should be installed in unused gas line entry hole. (See Fig. 31.)
NOTE: The gas valve inlet pressure tap connection is suitable to
use as test gauge connection providing test pressure DOES NOT
exceed maximum 0.5 psig (14- -in. wc) stated on gas valve. (See
Fig. 59.)
25