Bottom Closure Panel; Gas Piping - Bryant 352mav Installation, Start-Up, And Operating Instructions Manual

TABLE 2—FILTER INFORMATION
AIR FILTER LOCATED IN BLOWER COMPARTMENT
FURNACE
FILTER SIZE (IN.)*
CASING
Side Return
WIDTH (IN.)
17-1/2 (1) 16 X 25 X 1†
21 (1) 16 X 25 X 1
24-1/2 (1 or 2) 16 X 25 X 1 (1) 24 X 25 X 1† Cleanable
* Filters may be field modified by cutting filter material and support rods (3) in
filters. Alternate sizes and additional filters may be ordered from your dealer.
† Factory-provided with furnace.
NOTE: Side return-air openings can ONLY be used in UPFLOW
configurations. Install filter(s) as shown in Fig. 23. 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. 24.
NOTE: Remove and discard bottom closure panel when bottom
inlet is used.
VI. BOTTOM CLOSURE PANEL
This furnace is 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 the following:
1. Tilt or raise furnace and remove 2 screws holding front
filler panel. (See Fig. 25.)
2. Rotate front filler panel downward to release holding tabs.
3. Remove bottom closure panel.
4. Reinstall front filler panel and screws.
VII. GAS PIPING
Gas piping must be installed in accordance with national and local
codes. Refer to current edition of NFGC in the United States.
Canadian installations must be made in accordance with NSCNG-
PIC 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.
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. outside furnace casing.
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. 26.)
FILTER
TYPE
Bottom Return
(1) 16 X 25 X 1† Cleanable
(1) 20 X 25 X 1† Cleanable
—19—
WASHABLE
FILTER
Fig. 23—Filter Installed for Side Inlet
⁄
1
17 -IN. WIDE
2
CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
3 "
"
1
24 /
2
1 "
FILTER
SUPPORT
Fig. 24—Bottom Filter Arrangement
If local codes allow the use of a flexible gas appliance connector,
always use a new listed connector. Do not use a connector which
has previously served another gas appliance.
An accessible manual shutoff valve MUST be installed external to
furnace casing and within 6 ft of furnace. A 1/8-in. 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.
FILTER
RETAINER
A93045
WASHABLE
FILTER
FILTER
RETAINER
A00213