PERFORMANCE DATA (cont)

FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont)

581A300 (25 TONS) (Medium Heat Units)*

 

 

 

 

 

 

 

 

 

 

 

 

Airflow

 

 

 

 

 

Available External Static Pressure (in. wg)

 

 

 

 

 

 

0.2

 

 

0.4

 

 

0.6

 

 

 

0.8

 

 

1.0

 

(Cfm)

 

 

 

 

 

 

 

 

 

 

 

 

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

 

Watts

Bhp

Rpm

Watts

Bhp

6,500

775

2,600

2.99

825

2,872

3.30

871

3,130

3.60

915

 

3,400

3.91

959

3,692

4.25

7,000

826

3,115

3.58

875

3,408

3.92

918

3,679

4.23

959

 

3,954

4.55

1000

4,245

4.88

7,500

878

3,690

4.24

925

4,006

4.61

966

4,292

4.94

1005

 

4,575

5.26

1043

4,868

5.60

8,000

929

4,326

4.98

975

4,667

5.37

1015

4,970

5.72

1052

 

5,265

6.06

1088

5,564

6.40

8,500

981

5,029

5.78

1026

5,395

6.20

1064

5,717

6.58

1100

 

6,025

6.93

1134

6,332

7.28

9,000

1033

5,799

6.67

1076

6,191

7.12

1114

6,533

7.51

1148

 

6,856

7.89

1181

7,173

8.25

9,500

1085

6,640

7.64

1128

7,058

8.12

1164

7,421

8.54

1198

 

7,761

8.93

1229

8,091

9.31

10,000

1137

7,553

8.69

1179

8,000

9.20

1214

8,385

9.64

1247

 

8,741

10.05

1278

9,086

10.45

10,500

1190

8,542

9.82

1230

9,016

10.37

1265

9,424

10.84

1297

 

9,799

11.27

1327

10,158

11.68

11,000

1242

9,609

11.05

1282

10,111

11.63

1316

10,542

12.12

1347

 

10,937

12.58

1376

11,311

13.01

11,500

1294

10,756

12.37

1333

11,287

12.98

1367

11,741

13.50

—

 

—

—

—

—

—

12,000

1347

11,985

13.78

—

—

—

—

—

—

—

 

—

—

—

—

—

12,500

—

—

—

—

—

—

—

—

—

—

 

—

—

—

—

—

 

 

 

 

 

 

 

 

 

 

 

 

581A300 (25 TONS) (Medium Heat Units)* (cont)

 

 

 

 

 

 

 

 

 

 

 

Airflow

 

 

 

 

 

Available External Static Pressure (in. wg)

 

 

 

 

 

 

1.2

 

 

1.4

 

 

1.6

 

 

 

1.8

 

 

2.0

 

(Cfm)

 

 

 

 

 

 

 

 

 

 

 

 

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

 

Watts

Bhp

Rpm

Watts

Bhp

6,500

1004

4,016

4.62

1050

4,374

5.03

1098

4,769

5.48

1145

 

5,195

5.97

1192

5646

6.49

7,000

1041

4,559

5.24

1083

4,902

5.64

1126

5,277

6.07

1170

 

5,685

6.54

1214

6122

7.04

7,500

1081

5,179

5.96

1120

5,512

6.34

1159

5,872

6.75

1199

 

6,261

7.20

1240

6680

7.68

8,000

1124

5,875

6.76

1160

6,203

7.13

1196

6,553

7.54

1233

 

6,928

7.97

1270

7329

8.43

8,500

1168

6,647

7.64

1202

6,974

8.02

1235

7,318

8.42

1269

 

7,684

8.84

1304

8071

9.28

9,000

1214

7,495

8.62

1245

7,825

9.00

1277

8,168

9.39

1309

 

8,527

9.81

1341

8905

10.24

9,500

1260

8,421

9.69

1290

8,756

10.07

1320

9,100

10.47

1351

 

9,457

10.88

1381

9830

11.31

10,000

1308

9,425

10.84

1337

9,768

11.23

1365

10,116

11.63

1394

 

10,474

12.05

—

—

—

10,500

1356

10,510

12.09

1384

10,862

12.49

—

—

—

—

 

—

—

—

—

—

11,000

—

—

—

—

—

—

—

—

—

—

 

—

—

—

—

—

11,500

—

—

—

—

—

—

—

—

—

—

 

—

—

—

—

—

12,000

—

—

—

—

—

—

—

—

—

—

 

—

—

—

—

—

12,500

—

—

—

—

—

—

—

—

—

—

 

—

—

—

—

—

 

 

LEGEND

Refer to page 230 for general Fan Performance Data notes.

Bhp

—

Brake Horsepower Input to Fan

NOTE: Maximum continuous bhp is:

Watts

—

Input Watts to Motor

Low Range: 5.75

High Range: 8.63

*Motor drive ranges:

Low Range: 805-1007

High Range: 941-1176

All other rpms require field-supplied drive.

581A155-300

229

Page 228 Page 230
Page 229
Image 229
Bryant 581A/B manual 12,500 581A300 25 Tons Medium Heat Units, 11,000 11,500 12,000 12,500
Page 228 Page 230

581A/B specifications

The Bryant 581A/B is a sophisticated rooftop unit designed for commercial heating and cooling applications, striking a balance between performance, efficiency, and versatility. This unit is engineered to cater to various building sizes and configurations, making it an excellent choice for businesses seeking reliable climate control solutions.

One of the standout features of the Bryant 581A/B is its high efficiency. With SEER ratings reaching up to 14.5, this unit can significantly reduce energy costs while providing optimal performance throughout its operational lifespan. The design incorporates advanced compressor technology, allowing for variable speed operation that not only enhances comfort but also promotes energy savings by adjusting to the real-time demands of the environment.

The Bryant 581A/B also integrates cutting-edge refrigerant technology. Utilizing Puron refrigerant, it adheres to current environmental standards, minimizing its impact on ozone depletion while maximizing cooling performance. This commitment to sustainability is complemented by energy-efficient components, including high-efficiency coils and fan motors, which further optimize energy consumption.

In terms of construction, the Bryant 581A/B is built to withstand the rigors of outdoor installation. The unit features a rugged cabinet design with durable, corrosion-resistant materials, ensuring long-term reliability even in challenging weather conditions. Additionally, the easily accessible components simplify maintenance, reducing downtime for businesses.

The functionality of the Bryant 581A/B extends beyond mere cooling and heating. It is equipped with advanced control systems that can be interfaced with building management systems, allowing for seamless integration and enhanced control over indoor climate. This technology provides operators with the ability to monitor and adjust settings remotely, ensuring a comfortable indoor environment while optimizing energy use.

Noise reduction is another important characteristic of the Bryant 581A/B. The unit is designed with sound-dampening features, making it suitable for applications where low noise levels are a priority, such as retail spaces or office buildings.

Overall, the Bryant 581A/B is a robust solution for businesses seeking efficient, reliable, and flexible climate control. Its combination of advanced technology, durable construction, and user-friendly features make it a leading choice in the commercial HVAC market.
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