ELECTRICAL DATA

581B036-072 STANDARD MOTOR (Units Without Electrical Convenience Outlet)

 

NOMINAL

VOLTAGE

 

 

 

 

COMBUSTION

POWER

MINIMUM UNIT

UNIT

COMPRESSOR

OFM

IFM

SUPPLY

DISCONNECT

VOLTAGE

RANGE

FAN MOTOR

581B

 

 

 

 

WITH OUTLET

 

SIZE*

(V-Ph-Hz)

 

 

 

 

 

 

 

 

 

Min

Max

RLA

LRA

FLA

FLA

FLA

MCA

MOCP†

FLA

 

LRA

 

 

 

 

208/230-1-60

187

254

16.0

88.0

0.7

4.9

.57

25.6/25.6

35/35

25/25

 

101/101

036

208/230-3-60

187

254

10.3

77.0

0.7

4.9

.57

18.5/18.5

25/25

18/18

 

90/ 90

(3 Tons)

460-3-60

414

508

5.1

39.0

0.4

2.2

.30

9.0

15

9

 

46

 

575-3-60

518

632

4.2

31.0

0.4

2.2

.30

7.3

15

7

 

36

 

208/230-1-60

187

254

23.7

129.0

0.7

4.9

.57

35.2/35.2

45/45

34/34

 

142/142

048

208/230-3-60

187

254

13.5

99.0

0.7

4.9

.57

22.5/22.5

30/30

22/22

 

112/112

(4 Tons)

460-3-60

414

508

7.4

49.5

0.4

2.2

.30

11.9

15

12

 

56

 

575-3-60

518

632

5.8

40.0

0.4

2.2

.30

9.3

15

9

 

45

 

208/230-1-60

187

254

28.8

169.0

1.5

8.8

.57

46.3/46.3

60/60

45/45

 

216/216

060

208/230-3-60

187

254

17.3

123.0

1.5

5.8

.57

28.9/28.9

35/35

28/28

 

168/168

(5 Tons)

460-3-60

414

508

9.0

62.0

0.8

2.6

.30

14.7

20

14

 

84

 

575-3-60

518

632

7.1

50.0

0.8

2.6

.30

11.6

15

11

 

67

072

208/230-3-60

187

254

20.5

156.0

1.4

5.8

.57

32.8/32.8

40/40

32/32

 

200/200

460-3-60

414

508

9.6

70.0

0.6

2.6

.30

15.2

20

15

 

92

(6 Tons)

 

575-3-60

518

632

7.7

56.0

0.6

2.6

.30

12.2

15

13

 

78

 

 

581B036-072 STANDARD MOTOR (Units With Electrical Convenience Outlet)

 

NOMINAL

VOLTAGE

 

 

 

 

COMBUSTION

POWER

MINIMUM UNIT

UNIT

COMPRESSOR

OFM

IFM

SUPPLY

DISCONNECT

RANGE

FAN MOTOR

581B

VOLTAGE

 

 

 

 

WITH OUTLET

 

SIZE*

(V-Ph-Hz)

 

 

 

 

 

 

 

 

 

Min

Max

RLA

LRA

FLA

FLA

FLA

MCA

MOCP†

FLA

 

LRA

 

 

 

 

208/230-1-60

187

254

16.0

88.0

0.7

4.9

.57

31.6/31.6

40/40

30/30

 

106/106

036

208/230-3-60

187

254

10.3

77.0

0.7

4.9

.57

24.5/24.5

30/30

24/24

 

95/95

(3 Tons)

460-3-60

414

508

5.1

39.0

0.4

2.2

.30

11.7

15

11

 

48

 

575-3-60

518

632

4.2

31.0

0.4

2.2

.30

9.5

15

9

 

38

 

208/230-1-60

187

254

23.7

129.0

0.7

4.9

.57

41.2/41.2

50/50

39/39

 

147/147

048

208/230-3-60

187

254

13.5

99.0

0.7

4.9

.57

28.5/28.5

35/35

27/27

 

117/117

(4 Tons)

460-3-60

414

508

7.4

49.5

0.4

2.2

.30

14.6

20

14

 

58

 

575-3-60

518

632

5.8

40.0

0.4

2.2

.30

11.5

15

11

 

47

 

208/230-1-60

187

254

28.8

169.0

1.5

8.8

.57

52.3/52.3

60/60

50/50

 

221/221

060

208/230-3-60

187

254

17.3

123.0

1.5

5.8

.57

34.9/34.9

40/40

34/34

 

173/173

(5 Tons)

460-3-60

414

508

9.0

62.0

0.8

2.6

.30

17.4

20

17

 

86

 

575-3-60

518

632

7.1

50.0

0.8

2.6

.30

13.8

20

13

 

69

072

208/230-3-60

187

254

20.5

156.0

1.4

5.8

.57

38.8/38.8

45/45

37/37

 

205/205

460-3-60

414

508

9.6

70.0

0.6

2.6

.30

17.9

20

17

 

94

(6 Tons)

 

575-3-60

518

632

7.7

56.0

0.6

2.6

.30

14.3

20

15

 

79

 

 

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.

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. UL, Can- ada 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.

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

Maximum deviation is 7 v.

Determine percent of voltage imbalance.

7

% Voltage Imbalance = 100 x 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%, con- tact your local electric utility company immediately.

45

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Bryant 581B manual Electrical Data, Ofm, Supply, FAN Motor, Tons
Page 44 Page 46

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.
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