Bryant 581B manual Electrical Data, Rla Lra Fla Mca Mocp†

Page 46

ELECTRICAL DATA (cont)

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

 

NOMINAL

VOLTAGE

COMPRESSOR

 

 

COMBUSTION

POWER

MINIMUM UNIT

UNIT

OFM

IFM

DISCONNECT

VOLTAGE

RANGE

 

(each)

FAN MOTOR

SUPPLY

581B

 

 

 

 

SIZE*

(V-Ph-Hz)

 

 

 

 

 

 

 

 

 

 

 

 

Min

Max

RLA

 

LRA

FLA

FLA

RLA

MCA

MOCP†

FLA

 

LRA

 

 

 

 

 

208/230-3-60

187

254

10.3

 

77.0

0.7

5.8

0.6

19.4/19.4

25/25

19/19

 

120/120

036

460-3-60

414

508

5.1

 

39.0

0.4

2.6

0.3

9.4

15

9

 

60

 

575-3-60

518

632

4.2

 

31.0

0.4

2.6

0.3

7.7

15

8

 

48

 

208/230-3-60

187

254

13.5

 

99.0

0.7

5.8

0.6

23.4/23.4

30/30

23/23

 

142/142

048

460-3-60

414

508

7.4

 

49.5

0.4

2.6

0.3

12.3

15

12

 

71

 

575-3-60

518

632

5.8

 

40.0

0.4

2.6

0.3

9.7

15

9

 

57

 

208/230-3-60

187

254

17.3

 

123.0

1.5

7.5

0.6

30.6/30.6

35/35

30/30

 

187/187

060

460-3-60

414

508

9.0

 

62.0

0.8

3.4

0.3

15.5

20

15

 

94

 

575-3-60

518

632

7.1

 

50.0

0.8

3.4

0.3

12.2

15

12

 

76

 

208/230-3-60

187

254

20.5

 

156.0

1.4

7.5

0.6

30.6/30.6

35/35

30/30

 

187/187

072

460-3-60

414

508

9.6

 

70.0

0.6

3.4

0.3

15.5

20

15

 

94

 

575-3-60

518

632

7.7

 

56.0

0.6

3.4

0.3

12.2

15

12

 

76

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

 

 

NOMINAL

VOLTAGE

COMPRESSOR

 

 

COMBUSTION

POWER

MINIMUM UNIT

UNIT

OFM

IFM

DISCONNECT

VOLTAGE

RANGE

 

(each)

FAN MOTOR

SUPPLY

581B

 

 

 

 

SIZE*

(V-Ph-Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

Min

Max

RLA

 

LRA

FLA

FLA

RLA

MCA

MOCP†

FLA

LRA

 

 

 

 

 

 

208/230-3-60

187

254

10.3

 

77.0

0.7

5.8

0.6

25.4/25.4

30/30

25

124/124

036

 

460-3-60

414

508

5.1

 

39.0

0.4

2.6

0.3

12.1

15

12

63

 

 

575-3-60

518

632

4.2

 

31.0

0.4

2.6

0.3

9.8

15

10

50

 

 

208/230-3-60

187

254

13.5

 

99.0

0.7

5.8

0.6

29.4/29.4

35/35

29

146/146

048

 

460-3-60

414

508

7.4

 

49.5

0.4

2.6

0.3

15.0

20

14

73

 

 

575-3-60

518

632

5.8

 

40.0

0.4

2.6

0.3

11.8

15

11

59

 

 

208/230-3-60

187

254

17.3

 

123.0

1.5

7.5

0.6

36.6/36.6

40/40

36

192/192

060

 

460-3-60

414

508

9.0

 

62.0

0.8

3.4

0.3

18.2

20

18

96

 

 

575-3-60

518

632

7.1

 

50.0

0.8

3.4

0.3

14.4

20

14

77

 

 

208/230-3-60

187

254

20.5

 

156.0

1.4

7.5

0.6

40.5/40.5

45/45

39

224/224

072

 

460-3-60

414

508

9.6

 

70.0

0.6

3.4

0.3

18.7

25

18

104

 

 

575-3-60

518

632

7.7

 

56.0

0.6

3.4

0.3

15.0

20

15

89

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 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. UL, Canada 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.

= 100 x

max voltage deviation from average voltage

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.

% Voltage Imbalance = 100 x

 

7

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.

46

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Contents Unit 581B036-072 FEATURES/BENEFITSEasy Maintenance and Installation Unit 581B090-150FEATURES/BENEFITS Table of Contents Model Number Nomenclature ServiceabilityCompressors and Safety Switches are Easily Accessible for Indoor AIR Quality IAQARI* Capacities Heating Capacities and EfficienciesTime Guard II Control Options and AccessoriesLOW Ambient Controls Liquid Propane Conversion KITOptions and Accessories Bryant Commercial Programmable Thermostat Hail Guard Accusensor II Enthalpy ControlCoil Guard Grille Bryant Light Commercial ThermidistatPhysical Data Hi-Static090N††† Physical Data060N††† 120N†††090 102 120 150 Nominal Capacity tons LOSS-OF-CHARGE LOW-PRESSURE Base Unit Dimensions 581B036-072Base Unit Dimensions 581B090-150Accessory Dimensions 581B036-072 Control Accessory Dimensions 581B090-150Connector ALT Drain PKG. Accy GAS CRRFCURB003A00II Select Unit Based on Required Cooling Capacity Selection Procedure With 581B048 ExampleDetermine NET Cooling Capacity Performance Data Cooling CapacitiesPerformance Data Cooling Capacities581B090 71/2 Tons 581B120 10 Tons Temp F Cooling CAPACITIES, Units with Perfect Humidity Option Cooling CAPACITIES, Units with Perfect Humidity Option 2250/0.10 3000/0.11 3750/0.14 Condenser 134.3 581B036 3 Tons Standard Motor Airflow FAN Performance Vertical Discharge Units581B036 3 Tons HIGH-STATIC Motor Airflow 581B048 4 Tons Standard Motor Airflow FAN Performance Vertical Discharge Units581B048 4 Tons HIGH-STATIC Motor Airflow 581B060 5 Tons Standard Motor THREE-PHASE Units Airflow 581B060 5 Tons Standard Motor SINGLE-PHASE Units Airflow581B060 5 Tons HIGH-STATIC Motor 581B072 6 Tons Standard Motor Airflow 581B072 6 Tons HIGH-STATIC Motor581B090 71/2 Tons Standard Motor 581B090 71/2 Tons HIGH-STATIC Motor Airflow581B102 81/2 Tons HIGH-STATIC Motor Airflow 581B120 10 Tons Standard and HIGH-STATIC Motor Airflow FAN Performance Horizontal Discharge Units FAN Performance Horizontal Discharge Units 581B060 5 Tons Standard Motor 3-PHASE Units Airflow 581B060 5 Tons HIGH-STATIC Motor Airflow2000 1022 1121 1188 1264 Bhp Rpm 1800 885 942 10471900 982 1084 1160 1223 2100 1063 1140 1196 1272581B090 71/2 Tons HIGH-STATIC Motor Airflow 2700 573 648 711 770 798 827 Bhp Rpm 2550 627 692 754 783 8122600 557 634 698 759 787 816 2800 588 662 723 782 809 8373300 537 692 751 828 3100 500 669 731 8083200 519 680 741 818 3400 561 704 761EVAPORATOR-FAN Motor Efficiency Outdoor Sound Power Total UnitFiop Perfect Humidity Dehumidification 581B FAN RPM AT Motor Pulley Setting with HIGH-STATIC Motor 581B FAN RPM AT Motor Pulley Setting with Standard MotorEVAPORATOR-FAN Motor Data Standard Motor EVAPORATOR-FAN Motor Data HIGH-STATIC Motors Operating WattsEconoMi$er Outdoor-Air Leakage EconoMi$er Barometric Relief Damper CharacteristicsEconoMi$er Return-Air Pressure Drop Altitude Derating Factor Altitude Compensation581B036-150 Supply Electrical DataOFM FAN MotorElectrical Data RLA LRA FLA MCA MOCP†Nominal Voltage Combustion Power Minimum Unit Compressor RLA LRA Application Data Maximum Operating OUTDOOR-AIR TemperatureApplications Application Data Perfect Humidity Dehumidification Option Pressure Enthalpy Curve Psychrometric Chart 581B072 Shown Vertical Discharge Typical Piping and WiringHorizontal Discharge Typical Wiring Schematic Typical Wiring Schematic OFC 581B090-150 Typical Wiring SchematicTran Operating Sequence for 581B036-072 Units ControlsOperating Sequence for 581B090-150 Units Controls Operating Sequence for 581B036-150 Size UnitsPart 1 General Guide SpecificationsPart 2 Products Guide Specifications Light Commercial Thermidistat Page Specifications Subject to Change Without Notice
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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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