Greenheck Centrifugal Roof Exhaust Fans NYB Brochure & Specs page 7

Performance Data
Model NYB-180 & NYB-240
1.4
300
1.2
250
1.0
200 0.8
150 0.6
100
0.4
50 0.2
0 0.0
0 500 1000 1500
NYB-180
0 1000 2000
Model Motor Fan
Number HP RPM
580
NYB-180-4 1/4 640
700
NYB-180-3 1/3 765
820
NYB-180-5 1/2
880
940
NYB-180-7 3/4
1005
425
NYB-240-3 1/3
475
500
NYB-240-5 1/2
545
575
NYB-240-7 3/4
625
650
NYB-240-10 1
685
730
NYB-240-15 1 ⁄
1
2
785
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.
RPM
HP
Density 0.075 lb/ft³
2000 2500 3000 3500 4000 4500
cfm
3000 4000 5000 6000 7000
3
m /hr
0 0.125
CFM 2478 2220
BHP 0.12 0.14
CFM 2734 2500
BHP 0.17 0.18
CFM 2991 2775
BHP 0.22 0.23
CFM 3268 3070
BHP 0.28 0.30
CFM 3503 3318
BHP 0.35 0.37
CFM 3760 3587
BHP 0.43 0.45
CFM 4016 3854
BHP 0.53 0.55
CFM 4294 4142
BHP 0.64 0.67
CFM 4375 3869
BHP 0.21 0.23
CFM 4890 4449
BHP 0.29 0.32
CFM 5147 4728
BHP 0.34 0.37
CFM 5610 5226
BHP 0.44 0.47
CFM 5919 5555
BHP 0.51 0.55
CFM 6434 6098
BHP 0.66 0.70
CFM 6691 6368
BHP 0.74 0.78
CFM 7052 6745
BHP 0.86 0.91
CFM 7515 7227
BHP 1.05 1.09
CFM 8081 7813
BHP 1.30 1.35
1.4
300
1.2
250
1.0
200 0.8
150 0.6
100
0.4
50 0.2
0 0.0
0 1
NYB-240
0 2
CFM / Static Pressure in Inches wg
0.25 0.3 0.375 0.5
1933 1793 1424
0.14 0.15 0.14
2248 2142 1954
0.19 0.19 0.20
2552 2457 2308 1964
0.25 0.25 0.25 0.25
2873 2787 2655 2411
0.32 0.32 0.33 0.33
3138 3059 2938 2732
0.39 0.39 0.40 0.41
3419 3351 3239 3049
0.47 0.48 0.49 0.50
3696 3633 3534 3358
0.57 0.58 0.59 0.60
3993 3935 3847 3685
0.69 0.70 0.72 0.73
3244 2885
0.24 0.23
3933 3701 3222
0.33 0.34 0.33
4249 4047 3650
0.39 0.39 0.39
4803 4621 4336 3641
0.49 0.50 0.51 0.49
5163 4993 4731 4178
0.58 0.58 0.59 0.59
5751 5598 5361 4947
0.73 0.74 0.75 0.76
6041 5894 5669 5283
0.81 0.83 0.84 0.86
6440 6304 6095 5731
0.94 0.96 0.98 0.99
6941 6825 6629 6294
1.13 1.15 1.17 1.19
7547 7440 7271 6966
1.40 1.41 1.44 1.47
RPM
HP
Density 0.075 lb/ft³
2 3 4 5 6
cfm x 1000
4 6 8 10
3
m /hr x 1000
0.625 0.75 0.875
2050
0.32
2482 2010
0.41 0.38
2842 2580
0.51 0.50
3178 2971 2706
0.61 0.62 0.61
3518 3350 3148 2894
0.74 0.75 0.75
4383
0.75
4784 4053
0.85 0.80
5332 4807
1.01 0.99
5949 5524 5013
1.21 1.21 1.19
6649 6327 5911 5454
1.49 1.51 1.51
7 8
12
1
0.75
1.48
7