Bryant 580F installation instructions

Table 2A — Electrical Data (Without Convenience Outlet)

UNIT	NOMINAL	IFM	VOLTAGE		COMPR				OFM		IFM	COMBUSTION	POWER SUPPLY		DISCONNECT
			RANGE			(ea)			(ea)			FAN MOTOR				SIZE*
580F	VOLTAGE	TYPE	Min	Max	RLA		LRA	Hp		FLA	FLA	FLA	MCA	MOCP†	FLA		LRA
	208/230-1-60	Std	187	254	16.2		96.0	1/4		1.4	3.5	.6	25.2/25.2	30/30	24/24		106/106
		Alt									4.9		26.6/26.6	35/35	26/26		111/111
		Std									3.5		17.7/17.7	25/25	17/17		85/	85
	208/230-3-60	Alt	187	254	10.2		75.0	1/4		1.4	4.9	.6	19.1/19.1	25/25	19/19		90/	90
036		High									5.2		19.4/19.4	25/25	19/19		109/109
		Std									1.3		7.6	15	7		44
(3 Tons)
	460-3-60	Alt	414	508	4.4		40.0	1/4		0.8	2.1	.3	8.4	15	8		48
		High									2.6		8.9	15	9		57
		Std									1.3		5.5	15	6		35
	575-3-60	Alt	518	632	3.7		31.0	1/4		0.8	2.1	.3	6.0	15	7		37
		High									2.6		6.3	15	7		56
	208/230-1-60	Std	187	254	23.3		118.0	1/4		1.4	3.5	.6	34.0/34.0	40/40	32/32		129/129
		Alt									4.9		35.4/35.4	45/45	34/34		133/133
		Std									3.5		24.2/24.2	30/30	23/23		101/101
	208/230-3-60	Alt	187	254	15.4		90.0	1/4		1.4	4.9	.6	25.6/25.6	30/30	25/25		105/105
048		High									5.2		25.9/25.9	30/30	25/25		124/124
		Std									1.8		13.0	20	13		51
(4 Tons)
	460-3-60	Alt	414	508	8.3		45.0	1/4		0.8	2.1	.3	13.3	20	13		53
		High									2.6		13.8	20	13		62
		Std									1.8		9.2	15	10		41
	575-3-60	Alt	518	632	6.4		36.0	1/4		0.8	2.1	.3	9.3	15	10		42
		High									2.6		9.7	15	10		49
	208/230-1-60	Std	187	254	28.8		147.0	1/4		1.4	5.9	.6	43.3/43.3	60/60	42/42		161/161
		Alt									6.6		44.0/44.0	60/60	42/42		184/184
		Std									5.9		27.3/27.3	35/35	27/27		128/128
	208/230-3-60	Alt	187	254	16.0		114.0	1/4		1.4	5.2	.6	26.6/26.6	35/35	26/26		148/148
060		High									7.5		28.9/28.9	35/35	29/29		174/174
		Std									3.1		13.2	20	13		71
(5 Tons)
	460-3-60	Alt	414	508	7.4		64.0	1/4		0.8	2.6	.3	13.5	20	13		81
		High									3.4		13.5	20	13		93
		Std									3.1		9.7	15	11		58
	575-3-60	Alt	518	632	6.2		52.0	1/4		0.8	2.6	.3	9.9	15	11		65
		High									3.4		9.9	15	11		76
	208/230-3-60	Std	187	254	20.6		146.0	1/4		1.4	5.2	.6	32.4/32.4	40/40	31/31		180/180
		High									7.5		34.7/34.7	40/40	34/34		205/205
072	460-3-60	Std	414	508	9.5		73.0	1/4		0.9	2.6	.3	15.4	20	15		90
(6 Tons)		High									3.4		16.2	20	16		103
	575-3-60	Std	518	632	7.6		58.4	1/4		0.6	2.6	.3	11.4	15	12		75
		High									3.4		11.9	15	13		86
	208/230-3-60	Std	187	254	20.6		146.0	1/4		1.4	5.2	.6	32.4/32.4	40/40	31/31		180/180
		High									7.5		34.7/34.7	40/40	34/34		205/205
073	460-3-60	Std	414	508	9.5		73.0	1/4		0.9	2.6	.3	15.4	20	15		90
(6 Tons)		High									3.4		16.2	20	16		103
	575-3-60	Std	518	632	7.6		58.4	1/4		0.6	2.6	.3	11.4	15	12		79
		High									3.4		11.9	15	13		86

LEGEND

FLA — Full Load Amps

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

HACR	—	Heating, Air Conditioning and Refrigeration
IFM	—	Indoor (Evaporator) Fan Motor

% Voltage Imbalance = 100 x

7

LRA	— Locked Rotor Amps
MCA	— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC	— National Electrical Code
OFM	— Outdoor (Condenser) Fan Motor
RLA	— Rated Load Amps

*Used to determine minimum disconnect per NEC. †Fuse or HACR circuit breaker.

NOTES:

1.In compliance with NEC requirements for multimotor and combination 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 percent of voltage imbalance.

%Voltage Imbalance

max voltage deviation from average voltage

= 100 x

average voltage

Example: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

452 + 464 + 455

Average Voltage =

3

1371

=

3

=457

Determine maximum deviation from average voltage. (AB) 457 – 452 = 5 v

(BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

457

=1.53%

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%, contact your local electric utility company immediately.

3.For units with power exhaust: If a single power source is to be used, size wire to include power exhaust MCA and MOCP. Check MCA and MOCP when power exhaust is powered through the unit (must be in accordance with NEC and/or local codes). Determine the new MCA including the power exhaust using the following formula:

MCA New = MCA unit only + MCA of Power Exhaust

For example, using a 580F060 unit with MCA = 28.9 and MOCP = 35, with CRPWREXH030A00 power exhaust.

MCA New = 28.9 amps + 1.6 amps = 30.5 amps

If the new MCA does not exceed the published MOCP, then MOCP would not change. The MOCP in this example is 35 amps, the MCA New is below 35, therefore the MOCP is acceptable. If “MCA New” is larger than the published MOCP, raise the MOCP to the next larger size. For separate power, the MOCP for the power exhaust will be 15 amps per NEC.

POWER EXHAUST	MCA	MCA	MCA	MOCP
				(for separate
PART NO.	(230 v)	(460 v)	(575 v)
				power source)
CRPWREXH030A00	1.6	N/A	0.64	15
CRPWREXH021A00	N/A	0.9	N/A	15
CRPWREXH022A00	3.3	N/A	1.32	15
CRPWREXH023A00	N/A	1.8	N/A	15
CRPWREXH028A00	1.7	N/A	0.68	15
CRPWREXH029A00	N/A	1.0	N/A	15

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