Rla Lra | Bryant 581B specs

Bryant 581B manual Rla Lra

ELECTRICAL DATA (cont)

581B090-120 HIGH-STATIC MOTOR (Units Without Electrical Convenience Outlet)

	NOMINAL	VOLTAGE		COMPRESSOR					COMBUSTION	POWER		MINIMUM UNIT
UNIT	NOMINAL	VOLTAGE		COMPRESSOR			OFM	IFM	COMBUSTION	POWER		DISCONNECT
UNIT	VOLTAGE	RANGE			(each)		OFM	IFM	FAN MOTOR	SUPPLY		DISCONNECT
581B	VOLTAGE	RANGE			(each)				FAN MOTOR	SUPPLY			SIZE*
581B	(V-Ph-Hz)												SIZE*
	(V-Ph-Hz)	Min	Max	RLA		LRA	FLA	FLA	RLA	MCA	MOCP	FLA		LRA
		Min	Max	RLA		LRA	FLA	FLA	RLA	MCA	MOCP	FLA		LRA
	208/230-3-60	187	254	12.4		88.0	1.4	10.6	0.6	41.3	45†	44		267
090	460-3-60	414	508	6.4		44.0	0.7	4.8	0.3	20.6	25†	22		134
	575-3-60	518	632	4.8		34.0	0.7	4.8	0.3	15.8	20†	17		95
	208/230-3-60	187	254	15.0		99.0	1.4	10.6	0.6	47.2	60†	50		264
102	460-3-60	414	508	8.2		49.5	0.7	4.8	0.3	24.7	30†	26		132
	575-3-60	518	632	5.8		40.0	0.7	4.8	0.3	18.0	20†	19		107
	208/230-3-60	187	254	17.3		125.0	1.4	15.0	0.6	56.7	70	61		360
120	460-3-60	414	508	9.0		62.0	0.7	7.4	0.3	29.1	35†	29		181
	575-3-60	518	632	7.1		50.0	0.7	7.4	0.3	23.0	25†	23		136

581B090-120 HIGH-STATIC MOTOR (Units With Electrical Convenience Outlet)

	NOMINAL	VOLTAGE		COMPRESSOR			OFM	IFM	COMBUSTION	POWER		MINIMUM UNIT
UNIT	NOMINAL	VOLTAGE		COMPRESSOR					COMBUSTION	POWER		DISCONNECT
UNIT	VOLTAGE	RANGE			(each)				FAN MOTOR	SUPPLY		DISCONNECT
581B	VOLTAGE	RANGE			(each)				FAN MOTOR	SUPPLY			SIZE*
581B	(V-Ph-Hz)												SIZE*
	(V-Ph-Hz)	Min	Max	RLA		LRA	FLA	FLA	RLA	MCA	MOCP	FLA		LRA
		Min	Max	RLA		LRA	FLA	FLA	RLA	MCA	MOCP	FLA		LRA
	208/230-3-60	187	254	12.4		88.0	1.4	10.6	0.6	47.3	50†	49		267
090	460-3-60	414	508	6.4		44.0	0.7	4.8	0.3	23.3	25†	24		134
	575-3-60	518	632	4.8		34.0	0.7	4.8	0.3	18.5	20†	19		95
	208/230-3-60	187	254	15.0		99.0	1.4	10.6	0.6	53.2	60†	55		264
102	460-3-60	414	508	8.2		49.5	0.7	4.8	0.3	27.4	30†	28		132
	575-3-60	518	632	5.8		40.0	0.7	4.8	0.3	20.7	25†	21		107
	208/230-3-60	187	254	17.3		125.0	1.4	15.0	0.6	62.7	70	66		360
120	460-3-60	414	508	9.0		62.0	0.7	7.4	0.3	31.8	35†	32		181
	575-3-60	518	632	7.1		50.0	0.7	7.4	0.3	25.7	30†	25		147

LEGEND

FLA — Full Load Amps

HACR — Heating, Air Conditioning and Refrigeration

IFM — Indoor (Evaporator) Fan Motor

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

UL — Underwriters’ Laboratories

*Used to determine minimum disconnect per NEC.

†Fuse or HACR circuit breaker per NEC.

NOTES:

1. In compliance with NEC requirements for multimotor and combina-

tion load equipment (refer to NEC Articles 430 and 440), the overcur-

rent protective device for the unit shall be fuse or HACR breaker. The

Example: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

452 + 464 + 455

Average Voltage =

1371

= 457

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

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

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

UL, Canada approved units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

% Voltage Imbalance = 100 x

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

	= 100 x	max voltage deviation from average voltage
	= 100 x	average voltage
		average voltage

457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maxi- mum allowable 2%.

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

581B specifications

The Bryant 581B is an innovative and highly efficient gas furnace that stands out in the HVAC market for its remarkable performance, reliability, and advanced features. Designed to provide optimal heating comfort, the Bryant 581B is perfect for homeowners seeking both quality and energy efficiency.

One of the main features of the Bryant 581B is its impressive Annual Fuel Utilization Efficiency (AFUE) rating. With an AFUE rating of up to 80%, this gas furnace maximizes energy usage, ensuring that a significant portion of the fuel is converted into heat for your home. This efficiency not only translates into lower energy bills but also reduces the carbon footprint, making it an environmentally friendly choice.

The furnace is equipped with a multi-speed blower motor that enhances comfort by providing consistent airflow throughout the home. This technology adjusts to different heating demands, ensuring that every room reaches the desired temperature without the discomfort of hot or cold spots. The quiet operation of the blower motor also adds to the overall comfort, creating a peaceful home environment.

Another notable characteristic of the Bryant 581B is its durable construction. It features a robust heat exchanger built from high-quality materials, designed to withstand the rigors of daily use. The compact design of the furnace allows it to fit seamlessly into various spaces, making it an ideal choice for both new installations and replacement projects.

The Bryant 581B also comes with advanced safety features, including a self-diagnostic control board that monitors the system's performance. This feature allows for easy troubleshooting and maintenance, prolonging the life of the furnace. Additionally, the furnace is equipped with an induced draft blower that enhances venting efficiency and safety by ensuring that combustion gases are safely expelled from the home.

For homeowners looking for enhanced control, the Bryant 581B is compatible with a range of smart thermostats, providing the ability to monitor and adjust heating settings remotely. This integration with smart technology ensures that homeowners can maintain their desired comfort levels while maximizing efficiency.

In conclusion, the Bryant 581B gas furnace is a top-tier option that combines efficiency, durability, and modern technology. With its high AFUE rating, multi-speed blower, and advanced safety features, it promises to deliver unparalleled comfort and peace of mind for years to come. Whether for a new build or an upgrade, the Bryant 581B is an investment that pays off in both comfort and savings.