Bryant 120 Electrical Data, J-Boxrelocation, Relocating J-Box, Electrical Connection To J-Box

312A

Table 7 – Electrical Data

VOLTS			OPERATING VOLTAGE		MAX				MAXIMUM	MAXIMUM	MINIMUM
				RANGE		FURNACE		UNIT	WIRE	FUSE OR
HERTZ					UNIT						WIRE
						SIZE	AMPACITY#	LENGTH	CKT BKR
PHASE			MAX*	MIN.*	AMPS						GAUGE
									(ft)‡	AMPS†
115---	60---	1	127	104	5.3	045---	08/024045	7.42	49	15	14
115---	60---	1	127	104	7.1	045---	12/036045	9.67	38	15	14
115---	60---	1	127	104	5.2	070---	08/024070	7.22	51	15	14
115---	60---	1	127	104	7.3	070---	12/036070	9.90	37	15	14
115---	60---	1	127	104	10.1	070---	16/048070	13.42	27	15	14
115---	60---	1	127	104	8.2	090---	14/042090	10.84	34	15	14
115---	60---	1	127	104	9.9	090---	16/048090	13.0	28	15	14
115---	60---	1	127	104	12.9	090---	20/060090	16.70	34	20	12
115---	60---	1	127	104	8.2	110---	12/036110	10.76	34	15	14
115---	60---	1	127	104	10.1	110---	16/048110	13.19	28	15	14
115---	60---	1	127	104	13.7	110---	22/066110	17.60	32	20	12
115---	60---	1	127	104	10.2	135---	16/048135	13.28	27	15	14
115---	60---	1	127	104	14.5	135---	22/066135	18.61	30	20	12
115---	60---	1	127	104	15.0	155---	20/060155	19.34	29	20	12

* Permissible limits of the voltage range at which the unit operates satisfactorily.

#Unit ampacity = 125% of largest operating component’s full load amps plus 100% of all other potential operating components (EAC, humidifier, etc.) full load amps.

{ Time---delay type is recommended.

} Length shown is as measured 1 way along wire path between unit and service panel for maximum 2% voltage drop.

U.S. Installations: Make all electrical connections in accordance with National Electrical Code (NEC) ANSI/NFPA 70-2006 and any local codes or ordinances that might apply.

Canadian Installations: Make all electrical connections in accordance with Canadian Electrical Code CSA C22.1 or authorities having jurisdiction.

!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 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” 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. 25.)

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 the two screws removed in Step 1.

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

TWO

A02099

Fig. 25 - Relocating J-Box

ELECTRICAL CONNECTION TO J-BOX

Field-Supplied Electrical Box on Furnace J-Box Bracket. See Fig. 26.

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. and CSA C22.1 in Canada) 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. 24.

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