581B,C

Table 18—Fan Performance 581B 048, 581C 048 — Vertical Discharge Units; Standard Motor

(Belt Drive)*

AIRFLOW

 

 

 

 

 

EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

CFM

 

0.2

 

 

0.4

 

 

0.6

 

 

0.8

 

 

1.0

 

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

1200

666

0.26

257

778

0.37

367

871

0.47

471

952

0.57

572

1025

0.67

670

1300

701

0.31

306

810

0.43

426

901

0.54

540

981

0.65

651

1053

0.76

760

1400

737

0.36

361

842

0.49

491

931

0.62

616

1010

0.74

738

1081

0.86

856

1500

773

0.42

422

875

0.57

564

963

0.70

699

1040

0.84

831

1110

0.96

960

1600

810

0.49

491

909

0.65

643

994

0.79

790

1070

0.94

932

1140

1.08

1070

1700

847

0.57

567

943

0.73

730

1027

0.89

888

1101

1.05

1040

1170

1.20

1189

1800

885

0.66

652

978

0.83

826

1060

1.00

994

1133

1.16

1157

1900

923

0.75

745

1014

0.94

930

1093

1.11

1109

2000

962

0.85

847

1049

1.05

1043

AIRFLOW

 

 

 

 

 

 

EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

CFM

 

1.2

 

 

 

1.4

 

 

1.6

 

 

 

 

1.8

 

 

2.0

 

 

Rpm

Bhp

 

Watts

Rpm

Bhp

Watts

Rpm

Bhp

 

Watts

Rpm

 

Bhp

Watts

Rpm

Bhp

 

Watts

1200

1093

0.77

 

767

1155

0.87

861

1213

0.96

 

955

1268

 

1.05

1047

1321

1.14

 

1137

1300

1119

0.87

 

866

1181

0.98

970

1239

1.08

 

1073

1294

 

1.18

1175

 

1400

1147

0.98

 

972

1208

1.09

1086

 

 

 

1500

1175

1.09

 

1086

 

 

 

1600

 

 

 

 

1700

 

 

 

 

1800

 

 

 

 

1900

 

 

 

 

2000

 

 

 

 

NOTES:

 

 

 

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

 

1. Grey cells indicate field-supplied drive is required.

 

 

 

Bhp — Brake Horsepower

 

 

 

 

 

 

2. Maximum continuous bhp is 2.40.

 

 

 

 

 

Watts — Input Watts to Motor

 

 

 

 

 

 

3. See general fan performance notes.

 

 

 

 

*Motor drive range: 770 to 1185 rpm. All other rpms require field-supplied drive.

 

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Bryant 581C024--060, 581B036--072 installation instructions Rpm Bhp Watts