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7

Model 

Number

Motor 

HP

Fan 

RPM

CFM / Static Pressure in Inches wg

0

0.125

0.25

0.3

0.375

0.5

0.625

0.75

0.875

1

NYB-180-4

1/4

580

CFM

2478

2220

1933

1793

1424

BHP

0.12

0.14

0.14

0.15

0.14

640

CFM

2734

2500

2248

2142

1954

BHP

0.17

0.18

0.19

0.19

0.20

700

CFM

2991

2775

2552

2457

2308

1964

BHP

0.22

0.23

0.25

0.25

0.25

0.25

NYB-180-3

1/3

765

CFM

3268

3070

2873

2787

2655

2411

2050

BHP

0.28

0.30

0.32

0.32

0.33

0.33

0.32

NYB-180-5

1/2

820

CFM

3503

3318

3138

3059

2938

2732

2482

2010

BHP

0.35

0.37

0.39

0.39

0.40

0.41

0.41

0.38

880

CFM

3760

3587

3419

3351

3239

3049

2842

2580

BHP

0.43

0.45

0.47

0.48

0.49

0.50

0.51

0.50

NYB-180-7

3/4

940

CFM

4016

3854

3696

3633

3534

3358

3178

2971

2706

BHP

0.53

0.55

0.57

0.58

0.59

0.60

0.61

0.62

0.61

1005

CFM

4294

4142

3993

3935

3847

3685

3518

3350

3148

2894

BHP

0.64

0.67

0.69

0.70

0.72

0.73

0.74

0.75

0.75

0.75

NYB-240-3

1/3

425

CFM

4375

3869

3244

2885

BHP

0.21

0.23

0.24

0.23

475

CFM

4890

4449

3933

3701

3222

BHP

0.29

0.32

0.33

0.34

0.33

NYB-240-5

1/2

500

CFM

5147

4728

4249

4047

3650

BHP

0.34

0.37

0.39

0.39

0.39

545

CFM

5610

5226

4803

4621

4336

3641

BHP

0.44

0.47

0.49

0.50

0.51

0.49

NYB-240-7

3/4

575

CFM

5919

5555

5163

4993

4731

4178

BHP

0.51

0.55

0.58

0.58

0.59

0.59

625

CFM

6434

6098

5751

5598

5361

4947

4383

BHP

0.66

0.70

0.73

0.74

0.75

0.76

0.75

NYB-240-10

1

650

CFM

6691

6368

6041

5894

5669

5283

4784

4053

BHP

0.74

0.78

0.81

0.83

0.84

0.86

0.85

0.80

685

CFM

7052

6745

6440

6304

6095

5731

5332

4807

BHP

0.86

0.91

0.94

0.96

0.98

0.99

1.01

0.99

NYB-240-15

1

1

2

730

CFM

7515

7227

6941

6825

6629

6294

5949

5524

5013

BHP

1.05

1.09

1.13

1.15

1.17

1.19

1.21

1.21

1.19

785

CFM

8081

7813

7547

7440

7271

6966

6649

6327

5911

5454

BHP

1.30

1.35

1.40

1.41

1.44

1.47

1.49

1.51

1.51

1.48

Performance certified is for installation type A: free inlet, free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects of a 

birdscreen.

Performance Data 

Model NYB-180 & NYB-240

0

1000

2000

3000

4000

5000

6000

7000

0

50

100

150

200

250

300

DO

 NO

T S

EL

EC

TO

 T

HE

 L

EF

O

TH

IS

 S

YS

TE

M

 C

U

R

VE

0

500

1000

1500

2000

2500

3000

3500

4000

4500

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

 Static Pr

essur

e in. wg

cfm

NYB-180

m

3

/hr

Static Pr

essur

e Pa

 RPM
 HP

Density 0.075 lb/ft³

 3/4 hp

 1/2 hp

 1/3 hp

 1/4 hp

 1005 

 940 

 880 

 820 

 765 

 700 

 640 

 580 

0

2

4

6

8

10

12

0

50

100

150

200

250

300

DO

 NO

T S

EL

EC

TO

 T

HE

 L

EF

O

TH

IS

 S

YS

TE

M

 C

U

R

VE

0

1

2

3

4

5

6

7

8

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

 Static Pr

essur

e in. wg

cfm x 1000

NYB-240

m

3

/hr x 1000

Static Pr

essur

e Pa

 RPM
 HP

Density 0.075 lb/ft³

 1 1/2 hp

 3/4 hp

 1/3 hp

 1/2 hp

 1 hp

 785 

 730 

 685 

 650 

 625 

 575 

 545 

 500 

 475 

 425 

Summary of Contents for Centrifugal Roof Exhaust Fans NYB

Page 1: ...Centrifugal Roof Exhaust Fans Models NYD and NYB Direct and Belt Drive August 2008 ...

Page 2: ... is safely supported and will not drop closed Hinge is steel with protective coating Internal structural supports are heavy gauge galvanized steel angles Drive frames and motor supports are heavy gauge galvanized steel and are mounted on resilient isolators Backward inclined non overloading wheel is constructed of aluminum Heavy duty ball bearing motor Single and three phase fans include a NEMA 1 ...

Page 3: ...ss A wide variety of roof curbs are available including flanged pitched and sound absorbing Curb Seal Rubber seal between fan and curb to assure proper sealing when attached to a curb Coatings Wide variety of coatings and colors are available for decorative to corrosive applications Permatector is our standard coating Typically used for applications that require corrosion resistance in indoor and ...

Page 4: ... 11 2 Model NYD Direct Drive NYB Belt Drive Fan Size 75 through 240 4 Motor RPM for Direct Drive A 1725 B 1140 Dimensional Data Model A B C Damper Square NYD 75 19 483 303 4 781 201 2 521 10 254 NYD 90 19 483 303 4 781 201 2 521 10 254 NYD NYB 100 22 559 351 2 902 25 635 12 305 NYD 120 24 610 37 940 231 8 587 14 356 NYD 130 24 610 37 940 231 8 587 14 356 NYD NYB 140 26 660 411 2 1054 267 8 683 16 ...

Page 5: ...0 43 0 45 0 48 0 49 0 50 0 53 0 55 0 57 0 58 0 59 NYD 130 B 1 4 1140 CFM 2184 2005 1815 1741 1627 1421 1180 745 BHP 0 22 0 23 0 24 0 25 0 25 0 26 0 26 0 22 NYD 140 B 1 2 1140 CFM 2705 2534 2376 2308 2199 1999 1765 1483 1090 BHP 0 30 0 33 0 35 0 36 0 38 0 40 0 40 0 40 0 36 Performance certified is for installation type A free inlet free outlet Performance ratings include the effects of a birdscreen...

Page 6: ...0 3 1 3 1060 CFM 2178 2073 1951 1901 1823 1676 1495 BHP 0 24 0 25 0 26 0 27 0 27 0 27 0 27 1130 CFM 2322 2224 2112 2065 1994 1866 1721 1520 BHP 0 29 0 31 0 32 0 32 0 33 0 33 0 33 0 32 NYB 140 5 1 2 1190 CFM 2445 2352 2247 2204 2136 2020 1887 1732 1515 BHP 0 34 0 36 0 37 0 37 0 38 0 38 0 39 0 39 0 37 1250 CFM 2569 2480 2382 2341 2277 2170 2051 1919 1756 1465 BHP 0 40 0 41 0 42 0 43 0 44 0 44 0 45 0...

Page 7: ...M 6434 6098 5751 5598 5361 4947 4383 BHP 0 66 0 70 0 73 0 74 0 75 0 76 0 75 NYB 240 10 1 650 CFM 6691 6368 6041 5894 5669 5283 4784 4053 BHP 0 74 0 78 0 81 0 83 0 84 0 86 0 85 0 80 685 CFM 7052 6745 6440 6304 6095 5731 5332 4807 BHP 0 86 0 91 0 94 0 96 0 98 0 99 1 01 0 99 NYB 240 15 11 2 730 CFM 7515 7227 6941 6825 6629 6294 5949 5524 5013 BHP 1 05 1 09 1 13 1 15 1 17 1 19 1 21 1 21 1 19 785 CFM 8...

Page 8: ...enance and quiet dependable operation they experience long after the construction project ends NYD NYB Rev 4 August 2008 RG Copyright 2008 Greenheck Fan Corp Exhaust Fans The spun aluminum downblast centrifugal roof exhaust fan models G and GB direct or belt drive are an economical means of exhausting air They utilize a backward inclined wheel and are available in 45 different sizes Capacities ran...

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