Greenheck Centrifugal Roof Exhaust Fans NYB User manual

Centrifugal Roof Exhaust Fans
Models NYD and NYB
Direct and Belt Drive
August
2008

2
Model NYD & NYB
Standard Construction Features
Greenheck’s model NYD and NYB tamper-resistant centrifugal roof exhaust fans provide the industry’s
best performance and durability for general clean air applications where tamper resistance is required.
• Performanceascatalogedisassured.AllfansizesaretestedinourAMCAAccreditedLaboratoryand
allmodelsarelicensedtobeartheAMCAAirPerformanceseal.
• Greenhecksubjectstheseproductstoextensivelifetestingassuringyouthefanswillprovideyearsof
reliable performance.
Housingisconstructedentirelyofheavy-gaugegalvanizedsteelandincludeslouvered
vents for positive motor cooling.
Hood is hinged to swing fully open for complete access to all internal components. Open
hood 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switch.
Birdscreen constructed of wire mesh is attached to the structural supports. (Removed
from drawing for easy viewing internally)
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GreenheckFanCorporationcertifiesthattheNYB
and NYD models shown herein are licensed to bear
theAMCASeal.Theratingsshownarebasedon
tests and procedures performed in accordance
withAMCAPublication211andcomplywiththe
requirementsoftheAMCACertifiedRatingsProgram.
TheAMCACertifiedRatingsSealappliestoair
performance ratings only.
Standard
Construction
Features

3
Model NYD & NYB
Options and Accessories
Dampers - Gravity and
motorizeddampersare
designed to prevent outside
air from entering back into
the building when the fan is
off.Dampersizesareshown
on the performance pages.
Disconnect Switches-A
wideselectionofNEMA
rated switches are available
for positive electrical
shutoff and safety, including
dust-tight, rainproof
and corrosion-resistant.
Switches may be internally
or externally mounted.
CurbExtension -
Extensions raise the fan
discharge above the
roofline and provide an
accessible mounting
location for dampers. Insect screen bases
constructed with a removable fine mesh are
recommended for applications where insect
entry must be prevented.
RoofCurbs -
Prefabricated
roof curbs reduce
installation time and
costs by ensuring
compatibility between
the fan, curb and roof
opening.Allcurbsare
insulatedwithfiberglass.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 outdoor environments.
Hi-ProPolyesteris resistant to salt water,
chemical fumes and moisture in more
corrosiveatmospheres.Typicallyusedfor
applications that require superior chemical
resistance, excellent abrasion and outdoor UV
protection.Thiscoatingexceedsprotective
qualitiesofAirDryHeresiteandHeresite
BakedPhenolic.
BakedEnamelDecorativeCoatingsare heat
cured enamels applied either as wet paints or
electrostaticpowders.Customerscanchoose
from16standarddecorativecolorsorcolor
match any color.
Allcoatingswithrelativeresistancechartscan
befoundinGreenheck’sProductApplication
Guide,PerformanceCoatingsforVentilation
Products.

4
Dimensional Data &
Model Number Code
Model Number Code
Themodelnumbercodeisdesignedtocompletelyidentifythefan.Thecorrectcodelettersmustbe
specifiedtodesignatethecorrectconstruction.Theremainderofthemodelnumberisdeterminedby
thesizeandperformance.
NYD - 120 - A
Motor HP for Belt Drive
4= 1/4 7= 3/4
3= 1/3 10 = 1
5= 1/2 15 = 1½
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 BCDamper 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 (406)
NYB-180 30 (762) 45 (1143) 325⁄8(829) 18 (457)
NYB-240 34 (864) 521⁄2(1334) 385⁄8(981) 24 (610)
Alldimensionsininches(millimeters).
B
C
A2 1/2 in.
(64 mm)

5
Model
Number
Motor
HP
Fan
RPM
CFM/StaticPressureinIncheswg
0.000 0.125 0.250 0.300 0.375 0.500 0.625 0.750 0.875 1.000
NYD-75-A 1/4 1725 CFM 488 438 382 359 325 258 169
BHP 0.05 0.05 0.05 0.06 0.06 0.06 0.06
NYD-90-B 1/6 1140 CFM 723 617 484 418 253
BHP 0.04 0.05 0.05 0.05 0.05
NYD-90-A 1/4 1725 CFM 1094 1028 957 924 874 787 690 575 339
BHP 0.14 0.15 0.16 0.17 0.17 0.18 0.19 0.19 0.15
NYD-100-B 1/6 1140 CFM 1363 1223 1081 1017 920 713 417
BHP 0.11 0.12 0.13 0.14 0.14 0.14 0.12
NYD-100-A 1/4 1725 CFM 2062 1970 1877 1841 1787 1700 1590 1486 1377 1255
BHP 0.37 0.39 0.42 0.43 0.44 0.45 0.46 0.48 0.49 0.50
NYD-120-B 1/6 1140 CFM 1429 1303 1168 1108 1010 800
BHP 0.12 0.14 0.16 0.16 0.17 0.17
NYD-120-A 3/4 1725 CFM 2162 2080 1996 1962 1908 1819 1725 1623 1513 1387
BHP 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.
Performance Data
NYD - Direct Drive Models
0 500 1000 1500 2000 2500 3000 3500
0
50
100
150
200
250
300
350
400
0 300 600 900 1200 1500 1800 2100
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
NYD-100-A
NYD-90-A
NYD-100-B
NYD-90-B
NYD-75-A
RPM
Density 0.075 lb/ft³
0 500 1000 1500 2000 2500 3000 3500 4000 4500
0
50
100
150
200
250
300
350
400
0 400 800 1200 1600 2000 2400 2800
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Static Pressure in. wg
cfm
m3/hr
Static Pressure Pa
NYD-120-A
NYD-140-B
NYD-120-B
NYD-130-B
RPM
Density 0.075 lb/ft³

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Performance Data
Model NYB-100 & NYB-140
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-100-4 1/4
900 CFM 802 696 563 476
BHP 0.04 0.05 0.05 0.05
1000 CFM 891 797 686 635 517
BHP 0.06 0.06 0.06 0.06 0.06
1100 CFM 980 895 800 757 686
BHP 0.08 0.08 0.09 0.09 0.09
1200 CFM 1069 991 909 870 811 690
BHP 0.10 0.10 0.11 0.11 0.11 0.11
1300 CFM 1158 1087 1012 980 926 832 689
BHP 0.12 0.13 0.14 0.14 0.14 0.14 0.14
1400 CFM 1247 1181 1113 1084 1038 954 859
BHP 0.16 0.16 0.17 0.17 0.17 0.18 0.18
1500 CFM 1337 1274 1212 1186 1145 1068 989 894
BHP 0.19 0.20 0.21 0.21 0.21 0.22 0.22 0.22
1575 CFM 1403 1344 1285 1260 1222 1152 1077 996 892
BHP 0.22 0.23 0.24 0.24 0.24 0.25 0.25 0.25 0.25
1730 CFM 1541 1488 1434 1412 1379 1320 1254 1186 1114 1029
BHP 0.29 0.30 0.31 0.31 0.32 0.33 0.33 0.33 0.33 0.33
NYB-140-4 1/4
830 CFM 1706 1563 1399 1323 1188
BHP 0.12 0.13 0.13 0.13 0.13
910 CFM 1870 1742 1598 1534 1430 1189
BHP 0.15 0.16 0.17 0.17 0.17 0.17
990 CFM 2034 1920 1788 1734 1646 1473 1193
BHP 0.20 0.21 0.22 0.22 0.22 0.22 0.21
1030 CFM 2117 2007 1881 1829 1748 1593 1381
BHP 0.22 0.23 0.24 0.25 0.25 0.25 0.25
NYB-140-3 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 0.45 0.44 0.41
1300 CFM 2672 2586 2493 2454 2394 2291 2180 2058 1918 1735
BHP 0.45 0.46 0.48 0.48 0.49 0.50 0.50 0.51 0.50 0.49
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.
0 500 1000 1500 2000
0
50
100
150
200
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
TH
I
S
S
Y
S
T
EM
C
U
R
V
E
0 200 400 600 800 1000 1200 1400
0.0
0.2
0.4
0.6
0.8
1.0
Static Pressure in. wg
cfm
NYB-100
m3/hr
Static Pressure Pa
1/4 hp
1575
1500
1400
1300
1200
1100
1000
900
RPM
HP
Density 0.075 lb/ft³
0 1000 2000 3000 4000
0
50
100
150
200
250
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E
0 400 800 1200 1600 2000 2400 2800
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Static Pressure in. wg
cfm
NYB-140
m3/hr
Static Pressure Pa
RPM
HP
Density 0.075 lb/ft³
1/2 hp
1/3 hp
1/4 hp
1300
1250
1190
830
910
990
1030
1060
1130

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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 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 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
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E
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 Pressure in. wg
cfm
NYB-180
m3/hr
Static Pressure 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
D
O
N
O
T
S
E
L
E
C
T
T
O
T
H
E
L
E
F
T
O
F
T
H
I
S
S
Y
S
T
E
M
C
U
R
V
E
012345678
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Static Pressure in. wg
cfm x 1000
NYB-240
m3/hr x 1000
Static Pressure 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

Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the purchase date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
P.O. Box 410 • Schofield, WI 54476-0410 • Phone [phone] • greenheck.com
BuildingValueinAir
Our Warranty
Prepared to Support
Green Building Efforts
Greenheck delivers value
to mechanical engineers by
helping them solve virtually
any air quality challenges
their clients face with a
comprehensive selection of
top quality, innovative air-
related equipment. We offer
extra value to contractors
by providing easy-to-install,
competitively priced, reliable
products that arrive on time.
And building owners and
occupants value the energy
efficiency, low maintenance
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rangefrom50to44,700cfmandupto
3.25 in. wg of static pressure.
Thelowsilhouettefabrastyledownblastcentrifugalroofexhaustfan
SeriesLmodelsLDandLB(directorbeltdrive)arealowprofileand
architecturalmeansofexhaustingair.Theyutilizeabackward-inclined
wheelandareavailablein20differentsizes.Capacitiesrangefrom
100to37,500cfmandupto2.0in.wgofstaticpressure.
Thelowsilhouettepenthousestyledownblastcentrifugalroof
exhaustfanSeriesLmodelsLDPandLBP(directorbeltdrive)arean
architecturalmeansofexhaustingair.Theyutilizeabackward-inclined
wheelandareavailablein20differentsizes.Capacitiesrangefrom
100to37,500cfmandupto2.0in.wgofstaticpressure.
ThetamperresistantcentrifugalroofexhaustfanmodelsNYDandNYB
(directorbeltdrive)aregalvanizedconstructionandprevententryinto
theunitand/orbuilding.Theyutilizeabackward-inclinedwheelandare
availablein10differentsizes.Capacitiesrangefrom170to8,080cfm
andupto1.0in.wgofstaticpressure.