BULLETIN 141 MARCH, 2010 THE NEW YORK BLOWER COMPANY 7660 Quincy Street Willowbrook, IL 60527-5530 Visit us on the Web: http://www.nyb.com Phone: (800) 208-7918 Email: [email protected]• Class 1, 2, 3 construction • Capacities to 350,000 CFM • Static pressures to 14”WG • Efficiencies beyond 85% ACOUSTAFOIL ® F ANS DOUBLE - W IDTH
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BULLETIN 141MARCH, 2010
THE NEW YORK BLOWER COMPANY7660 Quincy StreetWillowbrook, IL 60527-5530
Visit us on the Web: http://www.nyb.comPhone: (800) 208-7918 Email: [email protected]
• Class 1, 2, 3 construction• Capacities to 350,000 CFM
• Static pressures to 14”WG• Efficiencies beyond 85%
ACOUSTAFOIL® FANSDOUBLE-WIDTH
PAGE 2
DESIGN FEATURES
• Complete AMCA Class 1, 2, 3 performance.
• Capacities to 350,000 CFM.
• Pressures to 14"WG.
• Efficiencies beyond 85%.
• Temperatures to 120°F.
• Twenty sizes: 10" through 73" wheel diameters.
• Available in clockwise and counterclockwise rotations in any of seven standard discharge positions.
• Unique inlet cones with airflow divertersimprove fan efficiency.
CONSTRUCTION FEATURES
• Heavy-gauge welded components provide struc-tural strength and durability.
• Continuously welded housings provide thestrongest possible construction.
• Bearings are selected to provide long service lifethrough the entire operating range of the fan.
• Standard finish is a medium-green enamel.
• Shafting is straightened to close tolerance tominimize “run out” and ensure smooth operation.
• Lifting eyes are standard on all fans.
• All Double-Width AcoustaFoil wheels are dynam-ically balanced and all fans are checked at thespecified running speed after final assembly.
DOUBLE-WIDTH ACOUSTAFOIL® FANS
The New York BlowerCompany certifies that theDouble-Width AcoustaFoilFans shown herein arelicensed to bear theAMCA seal. The ratingsshown are based ontests and proceduresperformed in accordancewith AMCA Publication211 and comply withthe requirements of theAMCA Certified RatingsProgram.
The New York Blower Company’s Double-WidthAcoustaFoil Fans combine the efficiency of its airfoilwheels with construction features to suit industrialsupply and exhaust systems as well as heating,ventilating, and air-conditioning applications. A widerange of accessories is available to tailor Double-Width AcoustaFoil Fans to each unique application.The state-of-the-art laboratory and design and manu-facturing facilities of The New York Blower Companyensure that Double-Width AcoustaFoil Fans providethe utmost in equipment value.
Size 24 Class 2 Fan withoptional flanged outlet and
opposed-blade outlet damper[representative of Sizes 18-27
Class 1 and 2 construction].
PAGE 3
WITH ACOUSTAFOIL® WHEELS
Stable performance—completely stable pressurecurve from wide-open to closed-off…ideal for variable air volume systems.Non-overloading horsepower curve—horsepowerreaches a peak and then decreases as flow increases…allows calculation of the maximum brake horse-power at a given fan speed so a motor can be selectedthat will not overload if system pressure changes.Efficiency—the mechanical efficiency curve offers a broad selection range with little horsepower variation.Sound—the superior efficiency of the AcoustaFoilwheel provides a low sound level over a wide performance range.
SAFETY EQUIPMENTSafe operation of air-moving equipment isdependent on proper installation and mainte-nance including selection and use of appropri-ate safety accessories for the specific installa-tion. Such safety accessories are availablefrom nyb, but selection of the appropriatedevices is the responsibility of the systemdesigner who must be aware of adjacent com-ponents, equipment location, and accessibilityin the particular installation. Neither nyb norits sales representatives are in a position tomake such a determination. The systemdesigner must consider providing guards for allexposed moving parts as well as protectionfrom access to high velocity airstreams.Improper application, installation, mainte-nance, or safety guard selection can createdanger to life and limb of personnel. Usersand/or installers should read "RecommendedSafety Practices for Air Moving Devices" aspublished by the Air Movement and ControlAssociation International, Arlington Heights,Illinois.
0 10 20 30 40 50 60 70 80 90 1000
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40
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% CFM
% S
P, B
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, M
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STATIC PRESSURE
BRAKE HORSEPOW
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ICIENCY
TYPICAL ACOUSTAFOIL PERFORMANCEShaded region highlights typical performanceat peak mechanical efficiency and lowestsound level.
Airfoil-blade design is the most efficient and quiet selection for clean-air movement.
Size 24 Class 2 with optional accessories [representative of
Sizes 18-27 Class 1 and 2 construction].
PAGE 4
1. UNITARY BASEStructural-steel base provides common support forfan, motor, and drive components…also availablewith spring isolators, or rubber-in-shear isolators[not shown]. Flexible outlet connection requiredwhen isolation is used.
2. DRAIN11⁄2" threaded tank flange located at lowest point in housing scroll.
3. INTERNAL INLET-VANE DAMPERSAllows smooth control in systems that require effi-cient dampering of airflow. Dampers are an integralpart of the fan inlet cones, providing considerablespace-saving. See separate Engineering Supplementfor performance.
4. FLANGED OUTLETAngles are welded flush with fan outlet and providedwith holes.
5. CLEANOUT DOORTwo types of gasketed doors are available…quick-opening: latch-type door swings open on hingesafter turning cam levers…bolted: closely spacedstuds keep door securely sealed.
6. SPLIT HOUSINGSizes 40 and larger Class 1 and 2, Sizes 36 andlarger Class 3 available with split housings…barsare welded to housing to permit bolting sectionstogether. Inlet and outlet connections do not have tobe removed except outlet connections must beremoved on Up Blast fans.
7. SAFETY EQUIPMENTBelt guards, inlet guards, and outlet guards are available.
ACCESSORIES AND MODIFICATIONS
OUTLET DAMPERSParallel-blade or opposed-blade outletdampers are available for volume-controlapplications. See separate Catalog Sheetand Engineering Letter.
Parallel blade Opposed blade
UpBlast
DownBlast
BottomHorizontal
TYPE AHorizontalSplit
TopHorizontal
Top AngularDown
BottomAngular Up
TopAngular Up
TYPE BPie-shapedSplit
Size 24 Class 2 fan with internalinlet vane damper, unitary base
with spring isolation, belt guard,motor and v-belt drive.
Size 44 Class 2 fan with splithousing construction, inlet guard,quick-opening cleanout door, uni-tary base, belt guard, motor, and
v-belt drive.
PAGE 5
The rising cost of energy puts emphasis on air-handling systemsthat can be operated efficiently at less than maximum design air-flow. The high efficiency and inherent stability of nyb’s AcoustaFoilwheel is particularly well-suited to variable airflow systems suchas industrial processes and variable volume air-conditioning sys-tems. The AcoustaFoil wheel design ensures not only maximumoperating efficiency at design CFM but also at reduced airflowregardless of the control method applied. This higher efficiencyallows quieter operation throughout the modulation range.
Double-Width AcoustaFoil Fans are available with both parallel-blade and opposed-blade outlet dampers or internal inlet-vanedampers, and are suited to speed modulation using variable frequency motor speed controllers.
The decision to vary the fan’s CFM by outlet damper,inlet-vane damper, or speed control should include con-sideration of the fan’s duty cycle. Extended operation atless than full performance favors speed control becauseof its superior energy-savings potential despite its higherfirst cost. Infrequent operation at less than full perfor-mance favors outlet damper control because of itslower first costs relative to the limited energy-savings
potential. Inlet-vane damper control demands consider-ation in almost all instances as it offers good potentialfor energy savings at reasonable initial cost.
The New York Blower Company’s nationwide networkof trained sales engineers is familiar with each of thesecontrol alternatives and can offer further assistance inselecting the best control for a particular application.
OUTLET DAMPER CONTROL INLET-VANE DAMPER CONTROL
VARIABLE FREQUENCY MOTOR SPEED CONTROL
Outlet dampers act on air after it haspassed through the fan by increasingresistance in the system. As the out-let damper is closed, the fan’s pointof operation moves left from the initial design point on the static-pressure curve. Depending on wherethe design point is, dampered horse-power may be less, the same, or morethan the full flow of horsepower.Outlet dampers are typically the leastexpensive first cost option but alsooffer the least potential for energysavings.
Inlet-vane dampers affect the fan’soutput by spinning the air in thedirection of wheel rotation as it entersthe fan. With this prespin, the wheelcannot develop its full output, yield-ing a reduced CFM at reduced horse-power. Each damper setting createsnew pressure and horsepowercurves. With inlet-vane dampers,reduced airflow always results inreduced horsepower. Though moreexpensive initially than outletdampers, inlet-vane dampers offergreater potential for energy savings.
Variable frequency motor speed controllers provide energy savings bydirectly controlling fan speed. Fromthe fan laws, CFM varies directly with the change in fan speed andhorsepower varies by the change infan speed cubed. For example, a20% reduction in fan speed yields a20% reduction in airflow and a 49%reduction in BHP. Though highest infirst cost, variable frequency speedcontrol provides the greatest potentialfor energy savings.
0 20 40 60 80 100 120 140 1600
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Size 24 Class 2 Fan with optional internal inlet-vane dampers [representative of Sizes 18-27 Class 1 and 2 construction].
HOW TO USE CAPACITY TABLESFor a given fan size, CFM, and static pressure, capacity tablesare used to obtain outlet velocity, RPM, and BHP. If capacitiesare at conditions other than 70°F. and sea level [standard den-sity, .075 lbs./cu. ft.], correction factors are applied to staticpressure and BHP.1. If conditions other than standard are involved, correct static
pressure for actual altitude and temperature using Chart I.2. Select size, RPM, and BHP from capacity tables, pages 7-13.3. Determine actual performance at operating conditions by
correcting static pressure and brake horsepower.
EXAMPLE: A fan is required for 16,000 CFM at 5"WG at5000 ft. elevation at 70°F.1. Chart I gives a 1.20 factor for 5000 ft. at 70°F. Corrected
pressure is 5"WG x 1.20 = 6"WG at 70°F. at sea level.2. A Size 241 is selected for 16,000 CFM at 6"WG at 1886
RPM and 20.8 brake horsepower.3. Actual performance: 16,000 CFM at 5"WG [6" ÷ 1.20] at
1886 RPM at 17.3 BHP [20.8 ÷ 1.20] at 5000 ft. at 70°F.
On Sizes 181 through 731; Class 1 is to left of outline area, Class 2 is outline area, Class 3 is to right of outline area.
CHART I —CORRECTION FACTORS FOR TEMPERATURE AND ALTITUDE
To obtain your copy of New York Blower’s Electronic Catalog contact your local New YorkBlower representative or go to www.nyb.com and click on SeIection Software.
ELECTRONIC CATALOGA complete New York Blower Catalog on one CD. No more manual calculations andbulky product catalogs. A critical tool for all system-designers and engineers who selectand specify air-moving equipment.
SELECTION BENEFITS
•Fast, accurate fan selection.•Automatic altitude, temperature,
and density corrections.•Sound levels by octave band.•Fan-performance curves.•Multiple model and size choices.•Metric or English units.
CATALOG CONTENTS
•Fan-selection program.•Complete product catalog in PDF including
drawings, dimensions, and design specifications.•Sample guide specifications.•New York Blower Engineering Letters.•Installation and Maintenance Manuals.•Listing of New York Blower representatives.
Wheel diameter: 121⁄4" Fan outlet area: 1.55 sq. ft.
Wheel circumference: 3.21' Maximum BHP = .101 (RPM)3
1000Class 2 = 4800 RPM
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
Performance certified is for installation Type B: Free inlet, Ducted outlet. Power rating [BHP] does not include transmission losses.Performance ratings do not include the effects of appurtenances [accessories].
MATERIAL SPECIFICATIONSDimensions in inches. Weights in pounds. WR² in lb.-ft.².
SizeShaft diameter Bearings Drive key [square] Wheel WR2 [lb.-ft.2] Bare fan weight [lbs.]
Wheel Bearing Wheel Bearing Wheel BearingClass 1 Class 2 Class 3 Class Class
1 2 3 1 2 3 1 2 3 1 2 3Class Class Class Class Class Class Class Class Class Class
10000Shafting: AISI 1040 turned, ground, polished and straightened. Bearing types: A–Link-Belt P3-U200. C–Sealmaster SPM. E–Link-Belt P-U300.F–Link-Belt P-B22400. F*–Link-Belt P-B22500. H–Dodge GTAH Grip-Tight. nyb reserves the right to substitute bearings of equal ratings.
PLENUM FANSUnhoused, single-width, Plenum Fans areavailable for airflows to 150,000 CFM andpressures to 12"WG. Nineteen sizes are offeredfrom 12" to 73" wheel diameters. Designsinclude belt and direct-drive arrangements.
PAGE 14
DIMENSIONSROTATABLEFANSDimensions should not be used forconstruction unless certified.
The New York Blower Company has a policy of continuous product development and reserves the right to change designs and specifications without notice.
Size
A B*Class 1, 2
Class3 ▲ TAD
C D F GClass
1Class
2Class
3Class1, 2
Class3
MKH
TH,TAD, DB
BH, UB,TAU, BAU
101121131
151161181
201221241
271301331361
91⁄21112
14143⁄4161⁄4
173⁄4193⁄4211⁄2
233⁄4261⁄4+283⁄4+311⁄4+
111⁄4133⁄415
163⁄4181⁄2201⁄4
221⁄4241⁄2263⁄4
291⁄2333640
———
——
211⁄4
231⁄4251⁄228
301⁄2333⁄437—
81⁄21011
121314
151⁄21719
201⁄2221⁄2†241⁄2†29†
81⁄21011
121314
151⁄21719
201⁄23336401⁄2
101⁄8123⁄8135⁄8
151⁄8165⁄8181⁄2
203⁄8221⁄2243⁄4
271⁄4331⁄2367⁄8403⁄4
111⁄8135⁄8151⁄8
163⁄4181⁄2201⁄2
221⁄2247⁄8273⁄8
301⁄4303⁄8333⁄8367⁄8
105⁄813141⁄4
157⁄8171⁄2193⁄8
213⁄8235⁄826
285⁄8317⁄835383⁄4
81⁄2103⁄8113⁄8
125⁄814151⁄2
17187⁄8203⁄4
227⁄8253⁄828307⁄8
———
——
341⁄4
37401⁄8443⁄4
481⁄253571⁄2623⁄4
211⁄4241⁄4261⁄2
281⁄2301⁄2341⁄4
37401⁄8443⁄4
481⁄253571⁄2623⁄4
———
——
37
404347
501⁄2551⁄260—
333
31⁄231⁄231⁄2
4441⁄2
551⁄2661⁄2
———
——4
41⁄241⁄25
51⁄2661⁄2—
135⁄8165⁄8183⁄4
201⁄4221⁄4243⁄4
27301⁄8331⁄4
361⁄2401⁄2445⁄8491⁄4
SizeN R S U
Class 1, 2 Class 3 Class 1, 2 Class 3T
Class 1, 2 Class 3a b� c d Base
holesClass 1, 2 Class 3
101121131
151161181
201221241
271301331361
21⁄421⁄421⁄4
21⁄421⁄423⁄4
23⁄423⁄431⁄4
31⁄431⁄431⁄431⁄4
———
——41⁄8
41⁄841⁄841⁄8
41⁄841⁄441⁄4—
77⁄893⁄8
103⁄4
111⁄2121⁄214
151⁄8163⁄4181⁄4
201⁄4221⁄8241⁄4261⁄2
———
——
141⁄8
151⁄4167⁄8187⁄8
201⁄2221⁄2245⁄8—
83⁄4101⁄4115⁄8
123⁄8133⁄8151⁄8
161⁄4177⁄8193⁄8
211⁄2231⁄2255⁄8277⁄8
———
——
155⁄8
163⁄4183⁄8207⁄8
221⁄2241⁄2265⁄8—
45⁄857⁄865⁄8
71⁄281⁄293⁄8
101⁄8107⁄8121⁄4
135⁄8147⁄816171⁄2
65⁄8883⁄4
95⁄8101⁄2115⁄8
127⁄8137⁄8151⁄2
167⁄819205⁄8227⁄8
———
——
107⁄8
113⁄4125⁄8143⁄8
151⁄2167⁄8181⁄4—
91⁄2115⁄8123⁄4
141⁄8151⁄2171⁄4
1921231⁄8
253⁄8281⁄4311⁄8343⁄8
135⁄8161⁄4177⁄8
193⁄4215⁄8235⁄8
261⁄2283⁄4317⁄8
343⁄4383⁄8421⁄8457⁄8
101⁄2127⁄814
153⁄4171⁄4191⁄8
211⁄8231⁄4255⁄8
281⁄4313⁄8345⁄8381⁄4
75⁄891⁄4
101⁄4
113⁄8121⁄2137⁄8
151⁄4163⁄4181⁄2
203⁄8225⁄8251⁄4271⁄2
9⁄169⁄169⁄16
9⁄169⁄169⁄16
9⁄169⁄163⁄4
3⁄43⁄43⁄47⁄8
* For DB Discharge on Class 1 and 2 fans sizes 101-271, use A dimension for B. + For DB Discharge on Class 1 and 2 fans sizes 301-361, use B dimension for A. † Use TAD dimension for Class 1 and 2 TAU and BAU discharge fans. ▲ TH, BH, UB, DB, BAU, TAU discharges. D and M are outside dimensions.
� For Size 30 and 33, Class 3 fans, dimensions for BAU or TAU discharge are 381⁄2" and 421⁄8", respectively. Tolerance: ±1⁄8"
1. Discharge is framed at floorline on Class 1 and 2 Down Blast fans. 2. Discharge is framed at floorline on Class 3, Sizes 36-73 Down Blast fans. Class 3, Sizes 18-33 Down Blast fans are furnished standard with slip connection above floorline.
3. On Class 1 and 2 fans with Bottom Horizontal discharge and optional flanged outlet, the flange extends below the base bars of the fan.
3 1 2 3 1 2
FAN DISCHARGES – VIEWED FROM DRIVE SIDE
Clockwise—angular discharges at 45º Counterclockwise—angular discharges at 45º
M
H
NK
D
C B
SR
SR
A
F
G
T
T
U
U
D
MSee note 1.
DIMENSIONS [INCHES]
PAGE 15
DIMENSIONSNON-ROTATABLEFANSDimensions should not be used forconstruction unless certified.
Tolerance: ±1⁄8"
DIMENSIONS [INCHES]
Size
A† BClass 1, 2 Class 3
TH, TAD BH, UB,TAU, BAU TH, TAD BH, BAU UB, TAU Class
1. Mounted flush withoutside edge of housing discharge.
2. Holes furnished on 4"centers from centerlines.
3. M and D dimensions are inside flange, outside housing.
4. Down Blast fans with optional flanged outlet are only offered in Class 3.
5. Tolerance: ±1⁄8".
SR
SR
A
F
G
T
T
U
U
M
HK
D
N C B
D
M
† On DB discharge , use B for A. ▲ TH, BH, UB, DB, BAU, TAU discharges. D and M are outside housing dimensions.
See note 2.
COMPLETE SELECTION OFAIR-MOVING EQUIPMENTThe New York Blower Company offers thousands of different types, models, andsizes of air-moving equipment. Contact your nyb representative for assistance inidentifying the best fan for your application.
Leading the industry forward since 1889
DUST/MATERIALHANDLING
Wide range of duty available with unique fan lines capable of handling light dust to heavymaterial. Typical applicationsinclude dust-collection and high-pressure process along with material-conveying.
ROOF VENTILATORSIncluding both hooded and upblast ventilators, propeller fans, and centrifugal roof exhausters. These units are ideal for industrial, commercial,and institutional applications.
PROCESS/FANCOMPONENTSPlug fans, plenum fans, wheels, inlet cones, and housings for a wide variety of OEM applications. Process/fan components are used in air-handling units, ovens, dryers, freezer tunnels, and filtration systems.
HEATINGPRODUCTSIndustrial-duty steam unit heaters with steam heating coils are availablefor facility heating andprocess-heat transfer.
AIR-HANDLING[CENTRIFUGAL]
Designed for clean to moderatelydirty gas streams. Commercial and industrial HVAC, process cooling, light material-conveying,heat removal, and dryer exhaustare just a few of the numeroussample applications
AIR-HANDLING[AXIAL]
For the ideal handling of cleanto moderately dirty airstreams.Commercial and industrial HVAC,drying and cooling systems, fumeextraction, and process-heatremoval are typical applications.
FIBERGLASSREINFORCED
PLASTIC [FRP]Choice of performance and duty forcorrosive gas streams. Applicationsinclude chemical process, wastewatertreatment, laboratory hood exhaust,and tank aeration.
CUSTOM PRODUCTSDesigned for unique applications. Variety of configurations, temperatures, flows, and pressures. Wide range of modifications and accessories are available to meet the most demanding specifications.