Bryant 558J manual 40.0 41.3 12.9 13.9 14.4 15.6

Table 39 – MCA/MOCP DETERMINATION W/ PWRD C.O.

	HZ		ELECTRIC HEATER					w/ PWRD C.O.
UNIT
	---PHV---	IFM			MCA	NO P.E.	FLA	LRA	MCA	w/ P.E. (pwrd fr/unit)			LRA
		TYPE	kW	FLA		MOCP					MOCP	FLA
							DISC. SIZE					DISC. SIZE
			---	---	38.5	60	38	138	40.4		60	40	140
			3.3/4.4	15.9/18.3	38.5/38.5	60/60	38/38	138/138	40.4/40.4		60/60	40/40	140/140
		STD	6.5/8.7	31.4/36.3	51.4/57.5	60/60	47/53	138/138	53.8/59.9		60/60	49/55	140/140
	---60		9.8/13.0	46.9/54.2	70.8/79.9	80/80	65/73	138/138	73.1/82.3		80/90	67/76	140/140
			13.1/17.4	62.8/72.5	90.6/102.8	100/110	83/95	138/138	93.0/105.1		100/110	86/97	140/140
	---1		15.8/21.0	75.8/87.5	106.9/121.5	110/125	98/112	138/138	109.3/123.9		110/125	101/114	140/140
	208/230
			---	---	38.5	60	38	138	40.4		60	40	140
			3.3/4.4	15.9/18.3	38.5/38.5	60/60	38/38	138/138	40.4/40.4		60/60	40/40	140/140
		MED	6.5/8.7	31.4/36.3	51.4/57.5	60/60	47/53	138/138	53.8/59.9		60/60	49/55	140/140
			9.8/13.0	46.9/54.2	70.8/79.9	80/80	65/73	138/138	73.1/82.3		80/90	67/76	140/140
			13.1/17.4	62.8/72.5	90.6/102.8	100/110	83/95	138/138	93.0/105.1		100/110	86/97	140/140
			15.8/21.0	75.8/87.5	106.9/121.5	110/125	98/112	138/138	109.3/123.9		110/125	101/114	140/140
			---	---	28.3	40	29	104	30.2		40	31	106
			4.9/6.5	13.6/15.6	29.1/31.6	40/40	29/29	104/104	31.5/34.0		40/40	31/31	106/106
		STD	6.5/8.7	18.1/20.9	34.8/38.3	40/40	32/35	104/104	37.1/40.6		40/45	34/37	106/106
			12.0/16.0	33.4/38.5	53.9/60.3	60/70	50/55	104/104	56.3/62.6		60/70	52/58	106/106
	60		15.8/21.0	43.8/50.5	66.9/75.3	70/80	62/69	104/104	69.3/77.6		70/80	64/71	106/106
			---	---	28.3	40	29	104	30.2		40	31	106
	3---		4.9/6.5	13.6/15.6	29.1/31.6	40/40	29/29	104/104	31.5/34.0		40/40	31/31	106/106
	---	MED	6.5/8.7	18.1/20.9	34.8/38.3	40/40	32/35	104/104	37.1/40.6		40/45	34/37	106/106
558J*07	208/230
			12.0/16.0	33.4/38.5	53.9/60.3	60/70	50/55	104/104	56.3/62.6		60/70	52/58	106/106
			15.8/21.0	43.8/50.5	66.9/75.3	70/80	62/69	104/104	69.3/77.6		70/80	64/71	106/106
			---	---	28.6	40	29	122	30.5		40	31	124
			4.9/6.5	13.6/15.6	29.5/32.0	40/40	29/29	122/122	31.9/34.4		40/40	31/32	124/124
		HIGH	6.5/8.7	18.1/20.9	35.1/38.6	40/40	32/36	122/122	37.5/41.0		40/45	35/38	124/124
			12.0/16.0	33.4/38.5	54.3/60.6	60/70	50/56	122/122	56.6/63.0		60/70	52/58	124/124
			15.8/21.0	43.8/50.5	67.3/75.6	70/80	62/70	122/122	69.6/78.0		70/80	64/72	124/124
			---	---	12.9	15	13	51	13.9		20	14	52
			6.0	7.2	14.4	15	13	51	15.6		20	14	52
		STD	11.5	13.8	22.6	25	21	51	23.9		25	22	52
			14.0	16.8	26.4	30	24	51	27.6		30	25	52
			23.0	27.7	40.0	45	37	51	41.3		45	38	52
	60		---	---	12.9	15	13	51	13.9		20	14	52
			6.0	7.2	14.4	15	13	51	15.6		20	14	52
	3---
		MED	11.5	13.8	22.6	25	21	51	23.9		25	22	52
	---
			14.0	16.8	26.4	30	24	51	27.6		30	25	52
	460
			23.0	27.7	40.0	45	37	51	41.3		45	38	52
			---	---	13.4	15	14	60	14.4		20	15	61
			6.0	7.2	15.0	15	14	60	16.3		20	15	61
		HIGH	11.5	13.8	23.3	25	21	60	24.5		25	23	61
			14.0	16.8	27.0	30	25	60	28.3		30	26	61
			23.0	27.7	40.6	45	37	60	41.9		45	39	61
	60	STD	---	---	9.0	15	9	46	10.9		15	11	48
	3---	MED	---	---	9.0	15	9	46	10.9		15	11	48
	575---
		HIGH	---	---	9.1	15	9	52	11.0		15	12	54

558J

LEGEND:
CO	---	Convenient outlet
DISC	---	Disconnect
FLA	---	Full load amps
IFM	---	Indoor fan motor
LRA	---	Locked rotor amps
MCA	---	Minimum circuit amps
MOCP	--- Maximum over current protection
PE	---	Power exhaust
UNPWRD CO	---	Unpowered convenient outlet
NOTES:

1.In compliance with NEC requirements for multimotor and combina- tion load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percentage of voltage imbalance.

% Voltage Imbalance = 100 x	max voltage deviation from average voltage
	average voltage

Example: Supply voltage is 230-3-60

AB = 224 v

BC = 231 v

AC = 226 v

Average Voltage =	(224 + 231	+ 226)	=	681
	3			3
=	227

Determine maximum deviation from average voltage.

(AB) 227 – 224 = 3 v	Maximum deviation is 4 v.
(BC) 231 – 227 = 4 v	Determine percent of voltage imbalance.
% Voltage Imbalance	= 100 x	4
		227
	= 1.76%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, con- tact your local electric utility company immediately.

43