Table 1 Ð Speci®cations

BASE UNIT 581B

036

 

048

 

 

060

 

 

072

 

NOMINAL CAPACITY (tons)

 

3

 

4

 

 

5

 

 

6

 

OPERATING WEIGHT (lb)

 

 

 

 

 

 

 

 

 

 

 

 

Unit

530

 

540

 

 

560

 

 

615

 

With Economizer

564

 

574

 

 

594

 

 

649

 

Roof Curb

115

 

115

 

 

115

 

 

115

 

COMPRESSOR

 

 

 

 

 

 

Scroll

 

 

 

 

 

Quantity

 

1

 

1

 

 

1

 

 

1

 

Oil (oz)

42

 

53

 

 

50

 

 

60

 

REFRIGERANT TYPE

 

 

 

 

 

 

R-22

 

 

 

 

 

Operating Charge (lb-oz)

5-8

 

8-6

 

 

10.0

 

 

9-10

 

CONDENSER FAN

 

 

 

 

 

 

Propeller

 

 

 

 

 

Quantity...Diameter (in.)

1...22

 

1...22

 

 

1...22

 

 

1...22

 

Nominal Cfm

3000

 

3000

 

 

4000

 

 

4000

 

Motor Hp...Rpm

1¤8...825

 

1¤8...825

 

 

1¤4...1100

 

 

1¤4...1100

 

Watts Input (Total)

180

 

180

 

 

300

 

 

300

 

CONDENSER COIL

 

 

 

 

Enhanced Copper Tubes, Aluminum Lanced Fins

 

 

 

Rows...Fins/in.

1...17

 

2...17

 

 

2...17

 

 

2...17

 

Total Face Area (sq ft)

14.58

 

16.53

 

 

16.53

 

 

16.53

 

EVAPORATOR FAN

 

 

 

 

 

 

Centrifugal

 

 

 

 

 

Size (in.)

10 x 10

 

10 x 10

 

 

10 x 10

 

 

10 x 10

 

Type Drive

Belt

 

Belt

 

 

Belt

 

 

Belt

 

Nominal Cfm

1200

 

1600

 

 

2000

 

 

2400

 

Maximum Continuous Bhp

1.20

 

1.20

 

 

1.80

 

 

2.40

 

Motor Frame Size

48

 

48

 

 

56

 

 

56

 

Fan Rpm Range

760-1090

 

840-1185

 

1020-1460

 

 

1120-1585

 

Motor Bearing Type

Ball

 

Ball

 

 

Ball

 

 

Ball

 

Maximum Fan Rpm

2100

 

2100

 

 

2100

 

 

2100

 

Motor Pulley Pitch Diameter A/B (in.)

1.9/2.9

 

1.9/2.9

 

 

2.4/3.4

 

 

2.4/3.4

 

Nominal Motor Shaft Diameter (in.)

1¤2

 

1¤2

 

 

1¤2

 

 

5¤8

 

Fan Pulley Pitch Diameter (in.)

4.5

 

4.0

 

 

4.0

 

 

3.7

 

Belt Ð Type...Length (in.)

A...33

 

A...36

 

 

A...40

 

 

A...38

 

Pulley Center Line Distance (in.)

10.0-12.4

 

10.0-12.4

 

 

14.7-15.5

 

 

14.7-15.5

 

Speed Change Per Full Turn of

65

 

70

 

 

75

 

 

93

 

Movable Pulley Flange (rpm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Movable Pulley Maximum Full Turns

 

5

 

5

 

 

5

 

 

5

 

from Closed Position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Factory Setting Ð Full Turns Open

 

3

 

3

 

 

3

 

 

3

 

Factory Speed Setting (rpm)

890

 

980

 

 

1240

 

 

1305

 

Fan Shaft Diameter at Pulley (in.)

5¤8

 

5¤8

 

 

5¤8

 

 

5¤8

 

EVAPORATOR COIL

 

 

Enhanced Copper Tubes, Aluminum Double Wavy Fins, Acutrol™ Feed Device

 

Rows...Fins/in.

2...15

 

2...15

 

 

4...15

 

 

4...15

 

Total Face Area (sq ft)

5.5

 

5.5

 

 

5.5

 

 

5.5

 

FURNACE SECTION

Medium

 

High

Low

Medium

High

Low

Medium

High

Low

Medium

High

Rollout Switch Cutout Temp (F)*

Heat

 

Heat

Heat

Heat

Heat

Heat

Heat

Heat

Heat

Heat

Heat

195

 

195

195

195

195

195

195

195

195

195

195

Burner Ori®ce Diameter (in. ...drill size)²

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas Ð Std

.113...33

.113...33

.113...33

.113...33

.129...30

.113...33

.113...33

.129...30

.113...33

.113...33

.129...30

Liquid Propane Ð Alt**

.089...43

 

.089...43

.089...43

.089...43

.102...38

.089...43

.089...43

.102...38

.089...43

.089...43

.102...38

Thermostat Heat Anticipator Setting (amps)

 

 

 

 

 

 

 

 

 

 

 

 

208/230/460 v

 

 

 

 

 

 

 

 

 

 

 

 

Stage 1

.14

 

.14

.14

.14

.14

.14

.14

.14

.14

.14

.14

Stage 2

.14

 

.14

.14

.14

.14

.14

.14

.14

.14

.14

.14

Gas Input (Btuh)

 

 

 

 

 

 

 

 

 

 

 

 

Stage 1

50,000

 

82,000

50,000

82,000

120,000

50,000

82,000

120,000

50,000

82,000

120,000

Stage 2

72,000

 

115,000

72,000

115,000

150,000

72,000

115,000

150,000

72,000

115,000

150,000

Efficiency (Steady State) (%)

82

 

80

82

81

80

82

81

80

82

81

80

Temperature Rise Range (F)

15-45

 

55-85

15-45

35-65

50-80

15-45

35-65

50-80

15-45

35-65

50-80

Manifold Pressure (in. wg)

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas (Std)

3.5

 

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

Liquid Propane (Alt)**

3.5

 

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

Maximum Static Pressure (in. wg)

1.0

 

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

Gas Valve Quantity

1

 

1

1

1

1

1

1

1

1

1

1

Field Gas Connection Size (in.)

1¤2

 

1¤2

1¤2

1¤2

1¤2

1¤2

1¤2

1¤2

1¤2

1¤2

1¤2

HIGH-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

Standard Compressor Internal Relief

 

 

 

 

 

 

450

 

 

 

 

 

Cutout

 

 

 

 

 

 

428

 

 

 

 

 

Reset (Auto.)

 

 

 

 

 

 

320

 

 

 

 

 

LOSS-OF-CHARGE/LOW-PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

(Liquid Line) (psig)

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

 

 

 

 

7 ± 3

 

 

 

 

 

Reset (Auto.)

 

 

 

 

 

 

22 ± 5

 

 

 

 

 

FREEZE-PROTECTION THERMOSTAT

 

 

 

 

 

 

 

 

 

 

 

 

Opens (F)

 

 

 

 

 

 

30 ± 5

 

 

 

 

 

Closes (F)

 

 

 

 

 

 

45 ± 5

 

 

 

 

 

OUTDOOR-AIR INLET SCREENS

 

 

 

 

 

 

Cleanable

 

 

 

 

 

Quantity...Size (in.)

 

 

 

 

 

1...20 x 24 x 1

 

 

 

 

RETURN-AIR FILTERS

 

 

 

 

 

 

Throwaway

 

 

 

 

 

Quantity...Size (in.)

 

 

 

 

 

2...16 x 25 x 2

 

 

 

 

LEGEND

Bhp Ð Brake Horsepower

*Indicates automatic reset. ²581B036072-072072 units have 2 burners.

581B036115-072115 and 581B048150-072150 units have 3 burners. **Indicates an accessory.

Ð6Ð

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Bryant installation instructions Specications, Base Unit 581B

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.