Greenheck Centrifugal Roof Exhaust Fans NYB Brochure & Specs page 6

Centrifugal roof exhaust fans direct and belt drive
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Performance Data
Model NYB-100 & NYB-140
1.0
200
0.8
150
0.6
100
0.4
50
0.2
0
0.0
0
200
400
NYB-100
0
500
Model
Motor
Fan
Number
HP
RPM
900
1000
1100
1200
NYB-100-4
1/4
1300
1400
1500
1575
1730
830
910
NYB-140-4
1/4
990
1030
1060
NYB-140-3
1/3
1130
1190
NYB-140-5
1/2
1250
1300
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.
6
RPM
HP
Density 0.075 lb/ft³
600
800
1000
1200
1400
cfm
1000
1500
2000
3
m
/hr
0
0.125
CFM
802
696
BHP
0.04
0.05
CFM
891
797
BHP
0.06
0.06
CFM
980
895
BHP
0.08
0.08
CFM
1069
991
BHP
0.10
0.10
CFM
1158
1087
BHP
0.12
0.13
CFM
1247
1181
BHP
0.16
0.16
CFM
1337
1274
BHP
0.19
0.20
CFM
1403
1344
BHP
0.22
0.23
CFM
1541
1488
BHP
0.29
0.30
CFM
1706
1563
BHP
0.12
0.13
CFM
1870
1742
BHP
0.15
0.16
CFM
2034
1920
BHP
0.20
0.21
CFM
2117
2007
BHP
0.22
0.23
CFM
2178
2073
BHP
0.24
0.25
CFM
2322
2224
BHP
0.29
0.31
CFM
2445
2352
BHP
0.34
0.36
CFM
2569
2480
BHP
0.40
0.41
CFM
2672
2586
BHP
0.45
0.46
1.2
250
1.0
200
0.8
150
0.6
100
0.4
50
0.2
0
0.0
0
400
NYB-140
0
CFM / Static Pressure in Inches wg
0.25
0.3
0.375
0.5
563
476
0.05
0.05
686
635
517
0.06
0.06
0.06
800
757
686
0.09
0.09
0.09
909
870
811
690
0.11
0.11
0.11
0.11
1012
980
926
832
0.14
0.14
0.14
0.14
1113
1084
1038
954
0.17
0.17
0.17
0.18
1212
1186
1145
1068
0.21
0.21
0.21
0.22
1285
1260
1222
1152
0.24
0.24
0.24
0.25
1434
1412
1379
1320
0.31
0.31
0.32
0.33
1399
1323
1188
0.13
0.13
0.13
1598
1534
1430
1189
0.17
0.17
0.17
0.17
1788
1734
1646
1473
0.22
0.22
0.22
0.22
1881
1829
1748
1593
0.24
0.25
0.25
0.25
1951
1901
1823
1676
0.26
0.27
0.27
0.27
2112
2065
1994
1866
0.32
0.32
0.33
0.33
2247
2204
2136
2020
0.37
0.37
0.38
0.38
2382
2341
2277
2170
0.42
0.43
0.44
0.44
2493
2454
2394
2291
0.48
0.48
0.49
0.50
800
1200
1600
2000
cfm
1000
2000
3000
3
m
/hr
0.625
0.75
0.875
689
0.14
859
0.18
989
894
0.22
0.22
1077
996
892
0.25
0.25
0.25
1254
1186
1114
0.33
0.33
0.33
1193
0.21
1381
0.25
1495
0.27
1721
1520
0.33
0.32
1887
1732
1515
0.39
0.39
0.37
2051
1919
1756
0.45
0.45
0.44
2180
2058
1918
0.50
0.51
0.50
RPM
HP
Density 0.075 lb/ft³
2400
2800
4000
1
1029
0.33
1465
0.41
1735
0.49

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