Bryant 345MAV instruction manual VIII. GAS Piping, 171⁄2-IN. Wide Casings only

WASHABLE

FILTER

FILTER

RETAINER

BOTTOM

CLOSURE

PANEL

Fig. 20ÐFilter Installed for Side Inlet

A93045

FRONT FILLER

PANEL

A93047

171⁄2-IN. WIDE CASINGS ONLY:

INSTALL FIELD-SUPPLIED FILTER FILLER STRIP UNDER FILTER.

3″

24 1/2″

1″

241⁄2-IN. WIDE CASINGS ONLY: CUT AND FOLD FACTORY-PROVIDED FILTERS AS SHOWN TO DESIRED SIZE.

Fig. 22ÐRemoving Bottom Closure Panel

VIII. GAS PIPING

Gas piping must be installed in accordance with national and local codes. Refer to current edition of NFGC. 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 2 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.

CAUTION: Connect gas pipe to furnace using a backup wrench to avoid damaging gas controls.

WASHABLE FILTER

WARNING: Gas valve ON and OFF switch MUST be facing forward or tilted upward. (See Fig. 40.) Failure to follow this warning could result in property damage or death.

WARNING: Never purge a gas line into a combustion chamber. Never use matches, candles, flame, or other sources of ignition for purpose of checking leakage. Use a soap-and-water solution to check for leakage. A failure to follow this warning could result in fire, explosion, personal injury, or death.

FILTER

FILTER RETAINER

SUPPORT

Fig. 21ÐBottom Filter Arrangement

To remove bottom closure panel, perform following:

A96030

WARNING: Use proper length of pipe to avoid stress on gas control manifold. Failure to follow this warning could result in a gas leak resulting in fire, explosion, personal injury, or death.

1.Tilt or raise furnace and remove 2 screws holding front filler panel. (See Fig. 22.)

2.Rotate front filler panel downward to release holding tabs.

3.Remove bottom closure panel.

4.Reinstall front filler panel and screws.

Ð18Ð

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. 23.)