Bryant 310AAV Electrical Shock and Fire Hazard, Furnace MAY not Operate, Wiring, BOX Relocation

!WARNING

ELECTRICAL SHOCK AND FIRE HAZARD

Failure to follow this warning could result in personal injury, death, or property damage.

The cabinet MUST have an uninterrupted or unbroken ground according to NEC ANSI/NFPA 70-2008 or local codes to minimize personal injury if an electrical fault should occur. This may consist of electrical wire, conduit approved for electrical ground or a listed, grounded power cord (where permitted by local code) when installed in accordance with existing electrical codes. Refer to the power cord manufacturer’s ratings for proper wire gauge. Do not use gas piping as an electrical ground.

!CAUTION

FURNACE MAY NOT OPERATE

Failure to follow this caution may result in intermittent furnace operation.

Furnace control must be grounded for proper operation or else control will lock out. Control must remain grounded through green/yellow wire routed to gas valve and manifold bracket screw.

115-V WIRING

Verify that the voltage, frequency, and phase correspond to that specified on unit rating plate. Also, check to be sure that service provided by utility is sufficient to handle load imposed by this equipment. Refer to rating plate or Table 7 for equipment electrical specifications.

Make all electrical connections in accordance with National Electrical Code (NEC) ANSI/NFPA 70-2008 and any local codes or ordinances that might apply.

!WARNING

FIRE HAZARD

Failure to follow this warning could result in personal injury, death, or property damage.

Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire.

Use a separate, fused branch electrical circuit with a properly sized fuse or circuit breaker for this furnace. See Table 7 for wire size and fuse specifications. A readily accessible means of electrical disconnect must be located within sight of the furnace.

NOTE: Proper polarity must be maintained for 115-v wiring. If polarity is incorrect, control LED status indicator light will flash rapidly and furnace will NOT operate.

J-BOX RELOCATION

NOTE: If factory location of J-Box is acceptable, go to next section (ELECTRICAL CONNECTION TO J-BOX).

NOTE: On 14-in. (356 mm) wide casing models, the J-Box shall not be relocated to other side of furnace casing when the vent pipe is routed within the casing.

1.Remove and save two screws holding J-Box. (See Fig. 23.)

NOTE: The J-Box cover need not be removed from the J-Box in order to move the J-Box. Do NOT remove green ground screw inside J-Box. The ground screw is not threaded into the casing flange and can be lifted out of the clearance hole in casing

while swinging the front edge of the J-Box outboard of the casing.

2.Cut wire tie on loop in furnace wires attached to J-box.

3.Move J-Box to desired location.

4.Fasten J-Box to casing with two screws removed in Step 1.

5.Route J-Box wires within furnace away from sharp edges, rotating parts and hot surfaces.

ELECTRICAL CONNECTION TO J-BOX

Field-Supplied Electrical Box on Furnace J-Box Bracket See Fig. 24.

1.Remove cover from furnace J-Box.

2.Attach electrical box to furnace J-Box bracket with at least two field-supplied screws through holes in electrical box into holes in bracket. Use blunt-nose screws that will not pierce wire insulation.

3.Route furnace power wires through holes in electrical box and J-Box bracket, and make field-wire connections in electrical box. Use best practices (NEC in U.S.) for wire bushings, strain relief, etc.

4.Route and secure field ground wire to green ground screw on J-Box bracket.

5.Connect line voltage leads as shown in Fig. 26.

6.Reinstall cover to J-Box. Do not pinch wires between cover and bracket. Electrical Box on Furnace Casing Side See Fig. 24.

!WARNING

FIRE OR ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, death, or property damage.

If field-supplied manual disconnect switch is to be mounted on furnace casing side, select a location where a drill or fastener cannot damage electrical or gas components.

1.Select and remove a hole knockout in the casing where the electrical box is to be installed.

NOTE: Check that duct on side of furnace will not interfere with installed electrical box.

2.Remove the desired electrical box hole knockout and posi- tion the hole in the electrical box over the hole in the fur- nace casing.

3.Fasten the electrical box to casing by driving two field supplied screws from inside electrical box into casing steel.

4.Remove and save two screws holding J-Box. (See Fig. 23.)

5.Pull furnace power wires out of 1/2-in. (12 mm) diameter hole in J-Box. Do not loosen wires from strain-relief wire-tie on outside of J-Box.

6.Route furnace power wires through holes in casing and electrical box and into electrical box.

7.Pull field power wires into electrical box.

8.Remove cover from furnace J-Box.

9.Route field ground wire through holes in electrical box and casing, and into furnace J-Box.

10.Reattach furnace J-Box to furnace casing with screws re- moved in Step 4.

11.Secure field ground wire to J-Box green ground screw.

310AAV

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