Warning, Step 6 — bottom closure panel, Step 7 — gas piping – Bryant Bruant 4 Way Gas 355AAV User Manual

Page 25

FILTER

RETAINER

WASHABLE

FILTER

A93045

Fig. 27 -- Filter Installed for Side Inlet

WASHABLE
FILTER

FILTER
SUPPORT

FILTER
RETAINER

⁄

-IN. (444mm) WIDE

CASINGS ONLY:
INSTALL FIELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.

″

21-IN. (533mm) WIDE
CASINGS ONLY:
SUPPORT RODS (3)
EXTEND 1/4" (6mm) ON
EACH SIDE OF FILTER AND
REST ON CASING FLANGE

(76mm)

(533mm)

(25.4mm)

A00290

Fig. 28 -- Bottom Filter Arrangement

NOTE: Remove and discard bottom closure panel when bottom
inlet is used.

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.

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.

WARNING

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.)

355A