Greenheck 12 BIDW User Manual

Double-Width Centrifugal Fan

Performance Supplement

• Engineering Information

• Air Performance

• Sound Performance

• Dimensional Data

July

2009

Table of Contents

Engineering Data

Motor Selection .............................................................................................. 3

Model Number Code ....................................................................................... 3

Motor Starting Torque ..................................................................................... 4

V-Belt Drives ................................................................................................... 4

High Temperature Operating Limits ............................................................... 4

Wheel Moments of Inertia ............................................................................... 4

Fan RPM Limitations (derating factors) .......................................................... 4

Inlet Vane Performance ................................................................................... 5

Inlet Vane Actuator Torques ........................................................................... 5

Effects of Air Density ......................................................................................6

Effect of Installation on Performance ............................................................ 7

Sound Performance Testing .........................................................................8-9

Sample Fan Selection .............................................................................10-11

Air and Sound Performance Data

Tabulated Air Performance .....................................................................12-78

Fan Curves and Sound Power Ratings ..................................................13-79

Dimensional Data

Sizes 12-73 Double-Width, arr. 3 ................................................................. 80

Greenheck Fan Corporation certifies that the backward inclined and airfoil centrifugal fans shown herein are

SOUND

AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL, INC.

and

AIR

PERFORMANCE

licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

Our Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment 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.

Aided Product Selection program, CAPS. Online, you can also find electronic copies of our product literature as well as storage, installation and maintenance information in our Installation and Operation Manuals.

And, of course, you can always count on the personal service and expertise of our national and international representative organization. To locate your nearest Greenheck representative call 715-359-6171 or visit our Web site at www.greenheck.com

To-Scale Drawings and Fan Specifications

To-scale CAD drawings along with detailed centrifugal specifications can be found online at greenheck.com or within our Computer Aided Product Selection program (CAPS).

Computer Aided Product Selection Program — CAPS

All Greenheck products are supported by the industry’s best product literature, electronic media, and Computer

Engineering Data

The model number codes on this page are a complete guide to ordering or specifying Greenheck Class IV centrifugal fan models.

Motor Selection

Greenheck centrifugal fans can be supplied with any motor that is commercially available, and appropriate for the fan size and performance required. The tables show motor frame sizes corresponding to those motors readily available.

Notes: 1. Fractional horsepower motor frame sizes shown may change due to variations in voltage, special features and

2. Motors shown are ball bearing, continuous duty. Two speed motors are two winding, 1/3 reduction in RPM.

3. Single-phase motors are capacitor start.

manufacturer.

1800 RPM Motors

230V 460V

3PH

2 Speed

2 Winding

Open

115V

1PH 3PH

Single Speed

Open TE

115V

230V

1PH

⁄4 48 48 48 48 48 48 48 48

⁄3 48 48 56 56 56 56 56 56

⁄2 56 56 56 56 56 56 56 56

⁄4 56 56 56 56 56 56 56 56

1 56 56 143T 56 143T 56 143T 143T 56

⁄2 145T 145T 145T 145T 145T 145T 145T 145T 56

2 182T 182T 145T 182T 145T 145T 145T 145T 182T 3 182T 182T 182T 182T 182T 184T 5 184T 184T 184T 184T 184T 215T

⁄2 213T 213T 213T 213T 213T 254T

10 215T 215T 215T 215T 215T 256T 15 254T 254T 254T 254T 254T 256T 20 256T 256T 256T 256T 256T 284T 25 284T 284T 284T 284T 284T 286T 30 286T 286T 286T 286T 286T 324T 40 324T 324T 324T 324T 324T 326T 50 326T 326T 326T 326T 326T 365T 60 364T 364T 364T 364T 364T

75 365T 365T 365T 365T 365T 100 405T 405T 405T 405T 405T 125 405T 444T 444T 405T 444T 150 444T 445T 445T 444T 445T

1PH 3PH

115V 230V

1PH 3PH

Explosion-

Resistant

115V 230V

1PH 3PH

High

Efficiency

Open TE

230V 460V

3PH

3600 RPM Motors

3600 RPM motors are recommended

for fan speed over 2700 RPM

Single Speed

Open TE

115V

230V

1PH

⁄3 48 48 56

⁄2 48 48 56 56 56

⁄4 56 56 56 56 56

1 56 56 56 56 56

⁄2 143T 143T 143T 143T 143T 143T 143T 143T

2 145T 145T 145T 145T 145T 145T 145T 145T 3 182T 182T 145T 182T 182T 182T 145T 182T 5 184T 182T 182T 184T 184T 182T 184T

⁄2 213T 184T 184T 213T 213T 184T 213T

10 215T 213T 213T 215T 215T 213T 215T 15 215T 254T 254T 215T 254T 20 254T 256T 256T 254T 256T 25 256T 284TS 284TS 256T 284TS 30 284TS 286TS 286TS 284TS 286TS 40 286TS 324TS 324TS 286TS 324TS 50 324TS 326TS 326TS 324TS 326TS

1PH 3PH

115V 230V

1PH 3PH

Explosion-

Resistant

115V 230V

1PH 3PH

High

Efficiency

Open TE

230V

460V

3PH

Motor Number Code

The model number code is a complete guide to ordering or specifying Greenheck Class II centrifugal fan models.

Belt Drive (BIDW) Model Number Code

12 - 73

Wheel BI - Backward Inclined AF - Airfoil Wheel SW - Single-Width DW - Double-Width

Series 21 - Permalock™ Series 41 - Welded

Arrangement 3

36 - BIDW - 41 - 3 - CW - TH - II - A 500

Rotation CW, CCW

Motor Horsepower 10 = 1 50 = 5 300 = 30 750 = 75 15 = 1½ 75 = 7½ 400 = 40 1000 = 100 20 = 2 100 = 10 500 = 50 1250 = 125 30 = 3 200 = 20 600 = 60 1500 = 150

Motor RPM M = 3500 A = 1770

Fan Class I, II, III

Discharge Position TH = Top Horizontal TAU = Top Angular Up BH = Bottom Horizontal BAU = Bottom Angular Up UB = Upblast TAD = Top Angular Down DB = Downblast BAD = Bottom Angular Down

Engineering Data

Motor Starting Torque

When selecting a motor for an industrial process fan, the motor must be capable of driving the fan at operating speed and also capable of accelerating the fan wheel, shaft and drive to the operating speed.

The fan performance tables and curves in this catalog show the brake horsepower required to operate the fan once it is brought to operating speed. For applications requiring a large air volume at a low static pressure, the BHP required at the fan’s operating RPM may not be sufficient to initially start the fan. If the time required to bring the fan to speed is excessive, the motor winding insulation can be damaged due to excessive temperature rise and the life of the motor seriously affected.

For a belt drive industrial process fan, the required motor starting torque capability can be expressed by the following formula:

FRPM =

MRPM =

(

FRPM

MRPM

= WR

The moment of inertia that the motor must be

capable of turning at the motor shaft, lb-ft

The moment of inertia of the fan wheel, lb-ft

Fan RPM

Motor RPM

)

x (1.1)

V-Belt Drives

Constant Speed Drives

Advantages of constant speed drives include low vibration levels, ease of assembly and low cost. Fan speed changes can be accomplished in most cases simply by changing the motor pulley.

Constant speed drives are recommended over variable speed drives for applications that require motors 15 HP and larger, and all applications requiring 3600 RPM motors.

Variable Speed Drives

Variable speed drives allow the fan speed to be changed by adjusting the pitch diameter of the motor pulley. The power to the fan must be off and locked out, and the belts must be removed before manually adjusting the variable pitch pulley.

Moments of Inertia (lb-ft2)

Moments of inertia are shown for steel wheels. Aluminum wheels are one-third of the value shown.

Fan

Size

Steel Backward Inclined

Centrifugal Wheels

Class I Class II Class III Class I Class II Class III

12 2.2 2.7 3.8 – – —

13 3.1 4.3 5.6 – – —

15 5.4 6.1 7.8 – – —

16 7.9 8.9 10.5 – – —

18 12.5 13.8 18.9 16.9 23.9 14.6

20 17.3 19.1 35.2 23.4 38.1 21.6

22 32.0 32.0 52.3 38.8 57.2 31.6

24 44.2 49.4 71.3 54.1 78.2 44.1

27 66.2 79.1 96.9 85.5 129 72.9

30 105 136 144 139 178 113

33 152 198 210 234 261 165

36 260 303 399 362 428 273

40 435 505 628 582 665 426

44 642 863 927 842 955 612

49 971 1310 1380 1300 1450 935

54 1760 2120 2130 2100 2430 1570

60 2850 3480 3700 3180 3530 2390

66 4650 5070 5350 4550 5290 3400

73 6950 7570 7950 6860 7860 5070

Steel Airfoil

Centrifugal Wheels

Fan RPM Limitations

The maximum allowable wheel RPM shown on the fan performance pages are for fans of standard steel operating at 70°F. Since the strength of the fan wheel, shaft and bearings decreases with an increase in temperature, maximum allowable speeds must be reduced by the correction factors shown below.

Maximum RPM Correction Factors For High Temperatures

Temperature

(°F)

70 1.00 1.00 1.00

200 1.00 .97 .92

Aluminum Steel 316 SS

Wheel Material

High Temperature Operating Limits

Temperature Material Arrangement Options Included

-20 to

180°F

Steel

Aluminum

Stainless Steel

3 None

Engineering Data

Inlet Vane Performance

As inlet vanes are closed, they impart a spin to the airflow in the direction of wheel rotation and reduce airflow, static pressure and brake horsepower as shown in the graphs below. The graphs show how CFM, static pressure and brake horsepower are affected as inlet vanes are modulated from 100% open to 0% open in a typical variable air volume system. Graph 3 provides RPM and BHP correction factors for fans equipped with inlet vanes.

100

0% Open

% Peak Static Pressure

0 10 20 30 40 50 60 70 80 90 100

25% Open

50% Open

% Wide Open Volume

100% Open

75% Open

Without Vanes

100

% Peak Brake Horsepower

Graph 1 Graph 2

RPM & BHP Corrections

To compensate for pressure drop through inlet vanes, a percentage increase in fan RPM and BHP at full-load design conditions must be applied.

Enter graph 3 with “% wide open volume” (see page 9 for calculation of % WOV) and the appropriate fan size.

Move horizontally left to the “% increase” scale. Record the % increase.

Increase the selected fan RPM by the % increase shown. Also increase the BHP by the % increase shown.

% Increase

50 60 70 80 90 100

Graph 3

0 10 20 30 40 50 60 70 80 90 100

25% Open

RPM and BHP Correction Factors for Fans with Inlet Vanes

% Wide Open Volume (without vanes)

50% Open

% Wide Open Volume

BHP Fan Sizes 12-22

BHP Fan Sizes 24-73

RPM Fan Sizes 12-22

RPM Fan Sizes 24-73

75% Open

Without Vanes

100% Open

Minimum Recommended Actuator Torque For Inlet Vanes (inch-lbs.) for Double-Width Fans

Use the table below to determine minimum torque required for an inlet vane actuator.

Class

III

12 13 15 16 18 20 22 24 27 30 33 36 40 44 49 54 60 66 73

52 60 66 76 94 114 136 220 260 280 320 360 540 640 740 860 1000 1200 1400

76 86 98 116 146 176 220 320 360 400 460 520 840 980 1160 1360 1600 1920 2200

108 126 144 172 220 260 320 440 520 560 660 760 1240 1480 1760 2000 2400 3000 3400

Fan Size

Engineering Data

Effect of Air Density – Temperature and Elevation

Ratings in the fan performance tables and curves of this catalog are based on standard air (clean, dry air with a density of 0.075 pounds per cubic foot, barometric pressure at sea level of 406.75 inches wg, temperature of 70°F). Selecting a fan to operate at conditions other than standard air requires an adjustment to both static pressure and brake horsepower.

One cubic foot of air has a constant volume regardless of temperature or elevation. However, air density changes with non-standard temperature or elevation. Therefore, when selecting a fan to operate at a non-standard air density using standard air density tables and curves, corrections must be made to parameters affected by air density. These parameters are static pressure and brake horsepower.

For example, a size 30 BIDW centrifugal fan is to deliver 35,000 CFM at 4.5 inches wg static pressure. Elevation is 4000 feet, temperature is 100°F.

The 4.5 inches wg static pressure refers to the static pressure at the operating air

Barometric Pressure

Multiply Standard Air Density, 0.075 lbm / ft3 by the Factor to obtain Density at Condition p

Altitude, (Z) ft. -1000

)

( p

density, in this case at 4000 feet, 100°F. Intuitively, we realize that at higher than standard elevations and temperatures, air density will be lower than standard. Therefore, we must determine what static pressure at standard air density will equate to 4.5inches wg static pressure at our operating density. Since standard

Temperature °F, (t)

air density is greater than operating air density in this case, we would expect the corrected static pressure to be greater than the operating static pressure.

The accompanying table gives air density correction factors for non-standard temperatures and elevations.

The example below shows the relationship of fan performance at sea level and at 4000 ft. elevation

Adapted from AMCA Standard 99-09, section 0200, Charts and Tables, with written permission from Air Movement and Control Association International, Inc.

and 100°F.

Example:

The following example shows how to properly select the fan described above:

1. Since the air volume delivered by the fan is not affected by density, airflow remains 35,000 CFM.

2. Determine correction factor from chart for an elevation of 4000 feet and air temperature of 100°F. The correction factor is 0.817.

3. Divide the specified operating static pressure by the correction factor to determine the standard air density equivalent static pressure. Corrected static pressure = 4.5 inches wg ÷ 0.817 =

5.5inches wg static pressure.

4. Refer to the fan performance table for a 30 BIDW. At 35,000 CFM and 5.5 inches wg static pressure: Fan RPM = 1571, BHP = 51.5

5. 1571 Fan RPM is required to produce the desired performance.

6. Since the horsepower selected refers to standard air density, this must be corrected to reflect actual BHP at the lighter operating air. Operating BHP = Standard BHP x 0.817, or 51.5 x 0.817 =

42.1BHP.

If a fan is selected to operate at high temperatures, the motor must be of sufficient horsepower to handle the increased load at any lower operating temperature where the air is more dense. Assume the air entering the 30 BIDW fan at start-up is 0°F. For 0°F and 4000 feet elevation, the air density correction factor is 0.995

BHP at 0°F = 51.5 x 0.995 = 51.2, therefore, a 60 HP motor is required.

Dry Air Density Correction Factor (I-P)

5.5 in. wg

30 BIDW

Brake Horsepower

Sea

1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

Level

in. Hg 31.02 29.92 28.85 27.82 26.82 25.84 24.89 23.98 23.09 22.22 21.39 20.58

in. wg 421.71 406.75 392.21 378.20 364.61 351.29 338.37 326.00 313.90 302.07 290.79 279.78

-40 1.309 1.262 1.217 1.174 1.131 1.090 1.050 1.012 0.974 0.937 0.902 0.868

0 1.195 1.152 1.111 1.071 1.033 0.995 0.959 0.924 0.889 0.856 0.824 0.793

40 1.099 1.060 1.022 0.986 0.950 0.915 0.882 0.850 0.818 0.787 0.758 0.729

70 1.037 1.000 0.964 0.930 0.896 0.864 0.832 0.801 0.772 0.743 0.715 0.688

100 0.981 0.946 0.913 0.880 0.848 0.817 0.787 0.759 0.730 0.703 0.677 0.651

150 0.901 0.869 0.838 0.808 0.779 0.750 0.723 0.696 0.670 0.645 0.621 0.598

200 0.832 0.803 0.774 0.747 0.720 0.693 0.668 0.644 0.620 0.596 0.574 0.552

250 0.774 0.746 0.720 0.694 0.669 0.645 0.621 0.598 0.576 0.554 0.534 0.513

300 0.723 0.697 0.672 0.648 0.625 0.602 0.580 0.559 0.538 0.518 0.498 0.480

350 0.678 0.654 0.631 0.608 0.586 0.565 0.544 0.524 0.505 0.486 0.468 0.450

400 0.639 0.616 0.594 0.573 0.552 0.532 0.513 0.494 0.475 0.458 0.440 0.424

450 0.604 0.582 0.561 0.541 0.522 0.503 0.484 0.467 0.449 0.432 0.416 0.401

500 0.572 0.552 0.532 0.513 0.495 0.477 0.459 0.442 0.426 0.410 0.395 0.380

550 0.544 0.525 0.506 0.488 0.470 0.453 0.436 0.420 0.405 0.390 0.375 0.361

600 0.518 0.500 0.482 0.465 0.448 0.432 0.416 0.401 0.386 0.371 0.357 0.344

700 0.474 0.457 0.440 0.425 0.409 0.394 0.380 0.366 0.352 0.339 0.327 0.314

800 0.436 0.420 0.405 0.391 0.377 0.363 0.350 0.337 0.324 0.312 0.301 0.289

900 0.404 0.390 0.376 0.362 0.349 0.336 0.324 0.312 0.301 0.289 0.278 0.268

1000 0.376 0.363 0.350 0.337 0.325 0.313 0.302 0.291 0.280 0.269 0.259 0.250

Standard Air 70°F, Sea Level

Corrected Air 100°F, Altitude of 4000 ft.

51.5 Bhp

42.1 Bhp

/hr x 10,000)

Static Pressure (Pa x 100)

Static Pressure (in. wg)

0 1 2 3 4 5

0 1 2 3 4 5 6 7 8 9

4.5 in. wg

Volume (cfm x 10,000)

Volume (m

Engineering Data

GOOD

POOR

GOODPOOR

0 5 10 15 20 25 30 35 40 45

Outlet Velocity (FPM x 100)

System Effect Factor Curves

Static Pressure Loss

1.2

1.0

0.8

0.6

0.4

0.2

0.0

Curve 1

Curve 2

Curve 3

Turning

Vanes

Length of Straight Duct

POOR

GOODPOOR

Turning

Vanes

GOOD

POOR

GOODPOOR

One fan

wheel

diameter

Turning

Vanes

Length of Straight Duct

GOODPOOR

Turning

Vanes

Effect of Installation on Performance

Ratings presented in the performance tables and curves of this catalog were derived from tests made in accordance with AMCA Standard 210 — “Laboratory Methods of Testing Fans for Ratings.” The AMCA test procedure utilizes an open inlet and a straight outlet duct to assure maximum static regain.

Any installation with inlet or discharge configurations that deviate from this standard may result in reduced fan performance. Restricted or unstable flow at the fan inlet can cause pre-rotation of incoming air or uneven loading of the fan wheel yielding large system losses and increased sound levels. Free discharge or turbulent flow in the discharge ductwork will also result in system effect losses.

Static pressure losses due to inlet and discharge conditions can be expressed in terms of system effect factors. The static pressure for selection of the fans equals the system static pressure plus the system effect factor.

Some common inlet and discharge conditions which affect fan performance are:

Non-Ducted Inlet Clearance

One fan

wheel

Installation of a fan with an open inlet too close to a wall or bulkhead will cause reduced fan performance. It is desirable to have one fan wheel diameter between the fan inlet and the wall.

System effect Curve #2 depicts the pressure loss for one-half wheel diameter clearance.

Free Discharge

diameter

Discharge Duct Turns

POOR

Length of Straight Duct

GOOD

Duct turns located near the fan discharge should always be in the direction of the fan rotation.

Fan performance is reduced when duct turns are made immediately off the fan discharge. To achieve cataloged fan performance there should be at least three equivalent duct diameters of straight ductwork between the fan discharge and any duct turns. Curve#3

shows the system effect factor for two diameters of straight ductwork and Curve #1 for one diameter.

System Effect Factor Curves

Additional information on system effect factors can be found in AMCA Publication 201 — “Fans and Systems” and ASHRAE Handbooks.

Free or abrupt discharge into a plenum results in a reduction in fan performance. The effect of static regain in discharge is not realized.

System effect Curve #1 depicts the pressure loss for free or abrupt discharge.

Sound Performance Testing

Fan

Reverberant

Room

Reference Sound Source

Microphone

Path

AMCA Licensed Ratings

Sound tests of Model BIDW and AFDW were conducted in Greenheck Fan Corporation’s AMCA Accredited sound laboratory in accordance with AMCA Standard 300. Inlet and outlet sound ratings comply with AMCA Publication 311, qualifying these models to bear the AMCA Seal for Sound and Air Performance. The sound power levels published here can be compared directly with those of other similarly rated fans, or used as a baseline to determine sound levels in occupied spaces.

The sound data in this brochure is the result of extensive testing, which included both inlet and outlet sound tests on double-width centrifugal fans. Typically, fan manufacturers publish only inlet sound for double-width fans. The assumption they make is that outlet sound is identical to inlet sound. Sound data based on this assumption is simply not accurate enough for today’s sound sensitive installations. This assumption also ignores duct end corrections for outlet sound.

Test Methods

AMCA Standard 300 clearly defines methods used to test fans in a reverberant sound test room. The reverberant room is specifically designed to allow sound waves to be dispersed evenly throughout the room. The walls have a hard surface that reflects sound and are positioned to prevent resonances which could result in quiet areas within the room.

Sound power cannot be directly measured. The test method is based on a Reference Sound Source (RSS) substitution for determining fan sound power. The RSS is a laboratory calibrated device which has a known sound power output level. The test fan is installed as shown below. The RSS is energized and the sound pressure levels in the reverberant room are recorded. The fan is then operated without the RSS and the fan sound pressure levels are recorded for various points of operation. Since the sound power levels of the RSS are known, the substitution method is used to determine the sound power levels of the fan. This method is illustrated in the following example.

Calculating Fan Sound Power

Octave Band 1 2 3 4 5 6 7 8

Center Frequency (Hz)

Calibrated RSS Sound Power (Lwr)

Measured RSS Sound Pressure (Lpq)

Difference (Lwr-Lpq)

Measured Fan Sound Pressure (Lpm)

Substitution (Lwr-Lpq , from above)

Fan Sound Power (Lw)

63 125 250 500 1000 2000 4000 8000

82 81 81 81 81 81 79 78

70 74 75 76 75 74 69 61

12 7 6 5 6 7 10 17

68 72 69 69 68 62 57 46

+12 +7 +6 +5 +6 +7 +10 +17

80 79 75 74 74 69 67 63

Note: Sound level shown in dB

Test Setups

The illustrations show where the sound levels were measured with respect to the fan. Inlet sound was tested as in Figure 2 of AMCA Standard 300 and outlet sound was tested as in Figure 3. Inlet and outlet sound were determined in the same inlet and outlet configurations as the air tests. (Installation Type B - Free Inlet, Ducted Outlet).

Since double-width fans are more often ducted at the inlet, they are tested only for sound radiated from the fan inlet.

DOUBLE WIDTH

Airflow

Fan

Microphone

Reference Sound Source

Path

Reverberant

Room

Figure 2: AMCA Standard 300 - Fan Inlet Sound Testing Installation Type B: Free Inlet, Ducted Outlet

Fan

Figure 3:

AMCA Standard 300 - Fan Outlet Sound Testing Installation Type B: Free Inlet, Ducted Outlet

DOUBLE WIDTH

Reference Sound Source

Airflow

Microphone

Path

Reverberant

Room

(Ratings include the effects of duct end correction)

Interpreting Sound Data

Sound power levels in this catalog are presented as dB (re 10 63 Hz to 8000 Hz. They are also presented as a single A-weighted sound power level, LwA. Charts are provided covering the full range of fan speeds and percent wide open volume (% WOV) for each fan size. Outlet sound power data is based on a ducted outlet and therefore includes duct end reflection corrections.

-12

watts) in each of the eight full octave bands with center frequencies from

Sound Performance Testing

Outlet Sound – Duct End Corrections

This correction accounts for sound that is reflected back into the duct where there is an abrupt termination of the duct.

AMCA Standard 300 requires that outlet sound power for fans with ducted outlets include Duct End Corrections. These corrections account for any sound power that may be present in the duct but is not measured in the reverberant room, because it is reflected back into the duct at the discharge.

Duct end corrections are included in all outlet sound power ratings.

Size

Duct End Corrections (dB)

Double-Width Fans

63 Hz 125 Hz 250 Hz

18 20 22 24 27 30 33 36 40 44 49 54 60 66 73

9 5 2

9 4 1

8 4 1

7 3

6 3

6 2

5 2

4 1

Tolerance and Application

The certification process in AMCA Standard 311 call for a precertification test to verify original test results. Check tests are also required every three (3) years for each model licensed. Test data must agree with the published sound power within the following tolerance levels:

Octave Band 1 2 3 4 5 6 7 8

Center Frequency (Hz)

Tolerance

63 125 250 500 1000 2000 4000 8000

+6 +3 +3 +3 +3 +3 +3 +3

These tolerance levels are a good indication of the variance that could occur from one fan or test setup to another. Once installed however, there are many other factors that can affect the sound power generated by a fan.

The lower frequencies (below 125 Hz) are greatly affected by vibration. Fan wheel balance, motor balance, drive alignment, etc., all affect the vibration level of the fan and can increase sound power in the 1st and 2nd octaves. When ducts are not properly isolated from the fan, these vibrations can be transmitted into the ducts, which can generate additional low frequency sound.

Sound power generated by a fan can also be influenced by system effects. System effects are pressure losses caused by inlet or outlet restrictions, or other conditions causing non-uniform airflow at the inlet or discharge of a fan (see AMCA Publication 201). Examples include inlet or outlet elbows too close to a fan, restricted inlets and fan accessories. While system effects can prevent fans from reaching their designed air performance, they can also result in increased sound power levels. Typically, system effects cause pressure fluctuations which influence the lower frequencies. Poor inlet conditions can also greatly increase sound levels at the blade pass frequency (BPF). The blade pass frequency refers to how often a blade or wheel fin passes a stationary location of the housing and can be calculated using the following equation:

Per AMCA: Blade Pass Frequency

BPF (Hz) =

NOTE: All BISW and AFSW wheels have nine blades.

Sound is becoming increasingly critical for most fan installations. Greenheck employs extensive research and testing to provide sound data that is as thorough and accurate as possible. However, sound pressure levels in occupied spaces are affected by the acoustical qualities of the space, distance from source to receiver, etc. Therefore, published sound power data can be used only as a baseline for determining the resulting sound pressure levels an occupant hears. While Greenheck provides products which meet published sound power levels, no manufacturer can be responsible for poor installations or system designs beyond their control. For further information on installation practices, see AMCA Publication 201, “Fans and Systems”.

Fan RPM x Number of Blades

(

)

Sound Power

Sound power data is charted for the full range of RPM and percent wide open volume (% WOV) for each unit size.

The % WOV is a convenient way to indicate the operating point (pressure and CFM) for a given fan RPM. To calculate the % WOV for a given fan size, use the equation given on the performance page.

Use the following procedure to calculate sound data for a specific Fan RPM and % WOV:

% WOV =

CFM x 100

RPM x K

1. Determine the eight sound power levels for the specified % WOV using the higher Fan RPM shown.

2. Determine the eight sound power levels for the specified % WOV using the lower Fan RPM shown.

3. Interpolate between the higher and lower sound power levels using the specified RPM.

Sample Fan Selection

20-BIDW-41

Fan Size

Series 21 - Permalock™ Series 41 - Welded

DW - Double-width, Double-inlet

Wheel BI - Backward-Inclined AF - Airfoil

The purpose of these two pages is to demonstrate the manual centrifugal fan selection process. These pages also contain helpful tips to check your fan selection, as well as a step-by-step set of instructions on how to use this manual to properly select a centrifugal fan.

An important point to remember when manually selecting a centrifugal fan is that more than one fan is available to meet the desired performance (CFM and Ps). Selection criteria such as unit size, efficiency, speed, outlet velocity, horsepower, or construction material may also dictate which fan is chosen.

20 BIDW

A The Outlet Area

is used for the Outlet Velocity (OV)

OV =

CFM

calculation.

B The Maximum BHP

can be calculated for a given fan RPM along the fan curve.

C The minimum starting

HP is determined by the inertia (WR

) of the fan and motor. See page 4 for a complete motor starting torque formula.

D The maximum fan

RPM for each fan class is listed.

E Constant HP curves

are plotted for each motor HP size.

F The % WOV is used

to identify the fan operating point. The lines in the fan curve or the equation can be used.

Wheel Diameter = 20 in.

Outlet Area = 4.14 ft.

Tip Speed = 5.24 x RPM

Maximum BHP = (RPM/832)

CFM OV

3000 724 489 0.20 596 0.34 699 0.52 3800 917 561 0.31 654 0.47 736 0.65 823 0.87 900 1.11 977 1.37 4600 1111 639 0.45 723 0.65 797 0.85 865 1.07 936 1.31 1005 1.59 1069 1.87 1132 2.17 5400 1304 720 0.65 796 0.87 864 1.11 927 1.35 987 1.60 1042 1.85 1105 2.16 1165 2.48 1221 2.81 1274 3.14 6200 1497 803 0.89 874 1.16 936 1.42 995 1.69 1050 1.96 1103 2.25 1154 2.54 1201 2.83 1257 3.19 1310 3.55 7000 1690 888 1.19 954 1.50 1012 1.80 1066 2.10 1119 2.40 1167 2.71 1215 3.03 1262 3.35 1306 3.67 1348 4.00 7800 1884 974 1.57 1035 1.92 1090 2.25 1142 2.58 1190 2.91 1237 3.25 1282 3.59 1324 3.94 1367 4.30 1409 4.66 8600 2077 1061 2.02 1119 2.41 1171 2.78 1219 3.14 1265 3.51 1309 3.87 1352 4.25 1393 4.62 1432 5.00 1471 5.39

9400 2270 1149 2.56 1203 2.98 1252 3.39 1298 3.79 1342 4.19 1384 4.59 1424 4.99 1463 5.40 1502 5.81 1539 6.22 10200 2463 1238 3.19 1288 3.64 1335 4.10 1379 4.54 1421 4.97 1461 5.41 1499 5.84 1536 6.27 1573 6.71 1609 7.15 11000 2657 1328 3.93 1374 4.41 1419 4.90 1461 5.39 1501 5.85 1539 6.32 1576 6.79 1612 7.26 1646 7.72 1680 8.20 11800 2850 1419 4.77 1461 5.28 1504 5.81 1544 6.34 1583 6.85 1619 7.35 1655 7.85 1689 8.36 1722 8.85 1755 9.35 12600 3043 1509 5.74 1548 6.27 1589 6.83 1628 7.40 1665 7.96 1700 8.50 1734 9.03 1767 9.57 1800 10.1 1831 10.6 13400 3236 1600 6.83 1637 7.39 1675 7.98 1712 8.58 1748 9.19 1782 9.77 1815 10.3 1847 10.9 1878 11.5 1908 12.1 14200 3429 1691 8.05 1726 8.65 1762 9.27 1797 9.90 1832 10.5 1865 11.2 1897 11.8 1928 12.4 1958 13.0 1987 13.6 15000 3623 1782 9.41 1816 10.1 1849 10.7 1883 11.4 1916 12.0 1949 12.7 1980 13.4 2010 14.0 2039 14.7 2067 15.3

CFM OV

7000 1690 1348 4.00 1444 4.80 1534 5.63 1619 6.49 1700 7.39 1786 8.38

7800 1884 1409 4.66 1486 5.39 1571 6.23 1655 7.15 1734 8.09 1809 9.05 1881 10.0 1959 11.1

8600 2077 1471 5.39 1547 6.18 1619 6.98 1692 7.85 1770 8.85 1845 9.86 1916 10.9 1984 12.0 2049 13.0 2119 14.2

9400 2270 1539 6.22 1610 7.06 1680 7.92 1746 8.80 1809 9.68 1881 10.7 1952 11.8 2020 12.9 2085 14.1 2148 15.2 10200 2463 1609 7.15 1677 8.05 1743 8.96 1808 9.89 1870 10.8 1929 11.8 1989 12.8 2056 14.0 2121 15.2 2184 16.4 11000 2657 1680 8.20 1747 9.15 1810 10.1 1871 11.1 1932 121.0 1990 13.1 2046 14.1 2100 15.2 2158 16.3 2220 17.6 11800 2850 1755 9.35 1818 10.4 1880 11.4 1938 12.4 1995 13.5 2052 14.6 2108 15.6 2161 16.7 2212 17.8 2262 19.0 12600 3043 1831 10.6 1892 11.7 1951 12.8 2008 13.9 2063 150.0 2116 16.1 2170 17.3 2223 18.4 2274 19.6 2323 20.7 13400 3236 1908 12.1 1967 13.2 2023 14.3 2079 15.5 2133 167.0 2185 17.8 2235 19.0 2285 20.2 2336 21.4 2384 22.7 14200 3429 1987 13.6 2044 14.8 2099 16.0 2152 17.2 2204 185.0 2255 19.7 2305 20.9 2352 22.2 2399 23.4 2447 24.7 15000 3623 2067 15.3 2122 16.6 2175 17.8 2227 19.1 2276 204.0 2326 21.7 2375 23.0 2422 24.3 2467 25.6 2512 27.0 15800 3816 2148 17.1 2201 18.5 2253 19.8 2303 21.2 2352 225.0 2398 23.9 2446 25.2 2492 26.6 2537 28.0 2581 29.4 16600 4009 2229 19.1 2281 20.5 2331 22.0 2380 23.4 2428 24.8 2474 26.2 2518 27.6 2564 29.0 2608 30.5 2651 31.9 17400 4202 2312 21.3 2362 22.8 2411 24.3 2458 25.8 2505 27.2 2550 28.7 2593 30.2 2636 31.7 2679 33.2 2722 34.7 18200 4396 2395 23.7 2444 25.2 2491 26.8 2538 28.3 2582 29.9 2626 31.4 2669 32.9 2711 34.5 2752 36.0 2793 37.6 19000 4500 2470 26.1 2526 27.8 2573 29.4 2618 31.0 2661 32.7 2704 34.3 2746 35.9 2787 37.5 2827 39.1 2867 40.7

CFM OV

9000 2173 2130 14.7 2195 15.9 2262 17.1

9900 2391 2170 15.9 2231 17.1 2289 18.4 2346 19.6 2405 20.9 2526 23.7 10800 2608 2211 17.3 2272 18.5 2330 19.8 2387 21.1 2442 22.4 2548 25.1 2656 28.0 2766 31.1 11700 2826 2255 18.7 2313 20.0 2371 21.4 2428 22.7 2482 24.1 2588 26.9 2689 29.8 2785 32.7 2887 35.9 2988 39.2 12600 3043 2323 20.7 2371 21.9 2417 23.1 2469 24.4 2524 25.9 2629 28.8 2729 31.8 2825 34.9 2918 38.0 3006 41.1 13500 3260 2392 22.9 2440 24.2 2486 25.4 2530 26.7 2574 28.0 2670 30.8 2770 33.9 2866 37.1 2958 40.4 3047 43.6 14400 3478 2463 25.3 2509 26.6 2555 27.9 2599 29.2 2643 30.6 2726 33.3 2812 36.2 2907 39.5 2999 42.8 3087 46.2 15300 3695 2538 27.8 2581 29.2 2625 30.6 2669 32.0 2712 33.4 2795 36.2 2874 39.1 2951 42.0 3040 45.4 3129 49.0 16200 3913 2616 30.6 2658 32.1 2699 33.5 2740 34.9 2782 36.4 2864 39.4 2943 42.4 3019 45.4 3092 48.4 3170 51.8 17100 4130 2695 33.6 2737 35.1 2777 36.6 2817 38.1 2856 39.7 2935 42.7 3013 45.9 3088 49.0 3160 52.2 18000 4347 2775 36.9 2816 38.4 2856 40.0 2896 41.6 2934 43.1 3008 46.3 3083 49.6 3158 52.9 18900 4565 2857 40.3 2897 42.0 2936 43.6 2975 45.2 3013 46.9 3086 50.2 3157 53.6 19800 4782 2942 44.1 2980 45.8 3017 47.5 3055 49.2 3092 50.9 3165 54.3 20700 5000 3028 48.1 3065 49.8 3101 51.6 3137 53.4 3173 55.1 21600 5217 3114 52.3 3150 54.2 3186 56.0 22500 5434 3201 56.9

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

C D

Sound and Air performance are identical for Greenheck Series 21 and 41 centrifugal fans.

The following example explains the model number code for both series of centrifugal fans.

Minimum Starting HP = 3⁄4

Maximum RPM Class I = 1960

Maximum RPM Class II = 2554

Maximum RPM Class III = 3219

STATIC PRESSURE (in. wg)

Step 1

STATIC PRESSURE (in. wg)

Performance certified is for model BIDW Arrangement 3, Installation Type B: free inlet, ducted outlet. Performance ratings do not include the effects of appurtenances (accessories). Power rating (BHP) does not include transmission losses.

Fan Selection Procedure

The sound power level ratings shown are in decibels, referred to 10

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

, L

A and outlet

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

ratings shown have been calculated per AMCA International Standard 301.

Class Max RPM

I 1960

II 2554

III 3219

20 BIDW

)gw .ni( erusserP citatS

)001 x aP( erusserP citatS

Volume (cfm x 1000)

Volume (m /hr x 1000)

0 5 10 15 20 25 30 35 40 45

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

BIDW-20

RPM BHP % WOV Density 0.075 lb/ft

Density 1.2 kg/m

800

1½

1100

1400

1700

1960

2300

50% WOV

60% WOV

70% WOV

80% WOV

90% WOV

2554

7½

2800

3000

25 40

3219

% WOV = (CFM X 100) / (RPM X 8.58)

Sound Power [dB Ref 10

-12

watts]

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

550 100 78 75 74 78 68 62 56 52 76

80 76 73 71 75 67 60 54 50 74 60 75 70 70 76 67 60 54 50 74 50 75 69 69 76 67 60 54 50 75 40 74 69 69 77 67 60 54 50 75

800 100 79 91 83 82 76 72 64 60 83

80 80 89 81 78 72 67 59 54 80 60 77 83 76 77 71 67 59 54 77 50 76 80 74 76 71 67 60 55 77 40 77 78 74 76 71 67 60 55 77

1100 100 85 92 91 89 85 81 74 70 90

80 84 88 88 87 81 77 69 65 87 60 83 84 83 83 79 76 70 65 85 50 80 83 82 83 79 76 70 66 84 40 80 83 82 83 78 75 70 66 84

1600 100 91 94 98 95 92 89 83 78 97

80 88 91 96 93 90 86 80 75 95 60 87 88 93 89 86 83 78 75 92 50 87 88 91 88 85 82 78 75 91 40 89 88 90 87 85 82 78 76 90

2200 100 98 100 103 105 98 96 91 88 105

80 95 97 100 103 96 92 87 84 102 60 92 93 98 99 93 91 87 84 100 50 93 93 98 97 93 90 87 84 99 40 95 95 98 98 92 90 88 86 99

3219 100 105 109 110 114 110 106 102 98 115

80 103 106 107 111 107 102 98 94 112 60 100 102 105 107 104 101 97 94 109 50 101 103 105 105 103 100 97 94 108 40 103 105 106 106 103 99 98 96 108

Outlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

550 100 90 78 75 68 67 59 52 47 73

80 90 77 71 64 64 54 47 45 70 60 83 74 68 63 62 54 48 45 67 50 82 73 67 63 63 54 48 45 67 40 82 73 67 63 63 54 48 46 67

800 100 93 96 83 77 77 71 63 57 84

80 90 92 81 73 72 64 57 52 80 60 87 84 76 72 69 63 57 53 75 50 87 82 74 72 68 62 57 54 74 40 89 83 73 71 68 62 57 54 74

1100 100 99 93 90 86 86 80 74 67 90

80 96 92 88 83 81 74 67 61 86 60 91 87 83 78 77 71 66 61 82 50 91 86 82 77 76 71 66 62 81 40 92 86 81 76 75 70 66 62 80

1600 100 105 98 98 94 93 89 85 77 98

80 102 95 96 91 92 87 81 73 96 60 100 91 93 87 87 83 77 72 92 50 100 92 92 86 86 81 76 72 91 40 100 93 92 85 84 81 76 72 90

2200 100 109 105 106 109 102 97 93 88 109

80 107 101 101 105 98 93 89 83 105 60 103 97 96 99 96 91 86 81 100 50 104 98 95 97 94 89 85 81 99 40 107 100 95 95 92 89 85 81 98

3219 100 117 115 113 118 114 108 104 99 118

80 115 112 109 113 110 104 100 94 114 60 111 108 105 107 106 102 97 92 110 50 112 109 104 105 104 100 96 92 108 40 116 112 106 103 102 99 95 92 107

STEP 1

Enter the performance table with the desired CFM and Ps. Obtain the fan RPM, BHP and Class.

EXAMPLE For this example, we will use 13,400 CFM at 2.0 Ps. This gives us a fan RPM of 1847, requiring 10.9 BHP, with Class I construction.

NOTE: If your specific fan selection requires inlet vanes or if the fan operating point is not at standard air (70°F), refer to the inlet vane and air density correction factor graphs and tables found on pages 5 and 6.

Step 2

STEP 2

Enter the Fan Curve with the desired CFM and Ps. Obtain the fan operating point, % WOV, Motor HP and verify fan class by curve shading.

EXAMPLE For this example, the fan operating point is at 85%WOV using a 15 HP motor.

STEP 3

Enter the Fan Sound Table with the Fan RPM from the performance table and the % WOV from the fan curve. Obtain the eight octave ratings for inlet

) and Outlet (L

Power.

) Sound

EXAMPLE For this example, the eight octave ratings are circled in the table below.

NOTE: The exact % WOV for your desired performance can be found using the equation at the top of the Sound Power Tables if it is not published. The eight octave ratings can then be found using the interpolation instructions found in the Sound Performance section on pages 8 and 9.

Step 3

12 BIDW

Wheel Diameter = 121⁄4 in.

Outlet Area = 1.55 ft.

Tip Speed = 3.21 x RPM

Maximum BHP = (RPM/1917)

Minimum Starting HP = 1⁄3

Maximum RPM Class I = 3205

Maximum RPM Class II = 4180

Maximum RPM Class III = 4250

CFM OV

1300 838 865 0.09 1046 0.15 1203 0.23 1540 993 949 0.12 1123 0.20 1265 0.27 1399 0.36 1519 0.45 1780 1148 1042 0.16 1203 0.24 1341 0.33 1461 0.42 1579 0.52 1687 0.62 1787 0.73 2020 1303 1139 0.21 1286 0.30 1420 0.40 1537 0.50 1643 0.60 1747 0.71 1846 0.82 1939 0.94 2026 1.06 2260 1458 1239 0.27 1373 0.37 1501 0.47 1616 0.58 1719 0.69 1815 0.81 1907 0.93 1999 1.06 2086 1.19 2168 1.32 2500 1612 1340 0.34 1467 0.45 1584 0.56 1696 0.68 1798 0.80 1891 0.92 1979 1.05 2062 1.18 2147 1.32 2228 1.46 2740 1767 1443 0.43 1564 0.54 1671 0.66 1778 0.79 1877 0.92 1970 1.05 2056 1.19 2137 1.33 2214 1.47 2290 1.61 2980 1922 1549 0.53 1662 0.65 1764 0.78 1863 0.91 1959 1.05 2049 1.20 2134 1.34 2214 1.49 2290 1.64 2363 1.79 3220 2077 1656 0.64 1762 0.78 1860 0.91 1951 1.05 2043 1.20 2131 1.35 2214 1.51 2293 1.67 2368 1.82 2440 1.98 3460 2232 1763 0.77 1863 0.92 1958 1.06 2045 1.21 2129 1.36 2214 1.52 2295 1.69 2373 1.86 2447 2.03 2518 2.20 3700 2387 1872 0.92 1966 1.08 2056 1.23 2141 1.39 2220 1.55 2300 1.72 2378 1.89 2454 2.07 2527 2.24 2597 2.43 3940 2541 1982 1.09 2069 1.26 2156 1.42 2238 1.59 2315 1.76 2388 1.93 2464 2.11 2537 2.29 2609 2.48 2677 2.67 4180 2696 2091 1.27 2175 1.46 2258 1.63 2336 1.81 2411 1.99 2482 2.16 2551 2.35 2623 2.54 2691 2.74 2759 2.94 4420 2851 2202 1.48 2282 1.68 2360 1.87 2436 2.05 2508 2.24 2577 2.42 2643 2.61 2709 2.81 2777 3.01 2842 3.22 4660 3006 2314 1.72 2389 1.92 2463 2.12 2537 2.32 2607 2.51 2674 2.71 2738 2.91 2800 3.11 2864 3.32 2927 3.53 4900 3161 2425 1.97 2497 2.19 2567 2.40 2638 2.61 2706 2.81 2771 3.02 2834 3.22 2895 3.43 2954 3.65 3014 3.87

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

2500 1612 2228 1.46 2381 1.75 2523 2.05 2730 1761 2287 1.60 2439 1.91 2579 2.23 2711 2.56 2960 1909 2357 1.77 2497 2.08 2637 2.42 2768 2.76 2891 3.11 3008 3.47 3190 2058 2430 1.96 2565 2.28 2696 2.62 2826 2.98 2948 3.35 3065 3.72 3176 4.11 3420 2206 2504 2.16 2638 2.50 2763 2.85 2884 3.21 3006 3.59 3122 3.99 3233 4.39 3339 4.80 3441 5.21 3650 2354 2580 2.38 2712 2.73 2835 3.10 2952 3.47 3065 3.86 3181 4.27 3291 4.68 3396 5.11 3498 5.54 3596 5.98 3880 2503 2657 2.61 2787 2.99 2909 3.37 3024 3.76 3133 4.15 3239 4.56 3349 4.99 3454 5.43 3555 5.88 3653 6.33 4110 2651 2735 2.86 2864 3.26 2984 3.66 3098 4.06 3206 4.48 3309 4.89 3408 5.32 3513 5.77 3613 6.24 3711 6.71 4340 2800 2814 3.12 2941 3.54 3060 3.97 3173 4.39 3280 4.82 3382 5.25 3480 5.70 3574 6.14 3672 6.61 3769 7.10 4570 2948 2895 3.41 3019 3.85 3137 4.29 3248 4.74 3354 5.19 3456 5.64 3553 6.09 3646 6.56 3737 7.03 3828 7.51 4800 3096 2978 3.72 3098 4.17 3215 4.63 3325 5.10 3430 5.57 3530 6.04 3626 6.52 3719 7.00 3809 7.48 3896 7.97 5030 3245 3062 4.06 3180 4.52 3293 5.00 3402 5.48 3506 5.98 3606 6.47 3701 6.96 3793 7.46 3882 7.96 3968 8.47 5260 3393 3151 4.43 3263 4.90 3373 5.39 3480 5.89 3583 6.40 3682 6.92 3776 7.43 3868 7.95 3956 8.47 4041 8.99 5490 3541 3241 4.82 3346 5.30 3455 5.81 3560 6.32 3661 6.85 3759 7.38 3853 7.92 3943 8.46 4031 9.00 4115 9.54 5720 3690 3333 5.24 3435 5.74 3538 6.25 3641 6.78 3740 7.32 3837 7.87 3929 8.43 4019 8.99 4106 9.55 4190 10.1 5950 3838 3425 5.69 3525 6.20 3622 6.72 3723 7.27 3820 7.82 3915 8.39 4007 8.97 4096 9.55 4182 10.1 4266 10.7

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

3500 2258 3559 5.75 3800 2451 3633 6.21 3728 6.66 3819 7.12 4100 2645 3708 6.69 3802 7.17 3893 7.65 3982 8.14 4068 8.64 4400 2838 3784 7.21 3878 7.71 3968 8.21 4056 8.72 4142 9.24 4700 3032 3864 7.76 3954 8.27 4044 8.80 4132 9.33 4217 9.87 5000 3225 3959 8.40 4042 8.91 4124 9.43 4209 10.0 5300 3419 4054 9.08 4137 9.62 4218 10.2 5600 3612 4151 9.81 4233 10.4 5900 3806 4249 10.6 6200 4000 6500 4193 6800 4387 7100 4580 7400 4774 7700 4967 8000 5161

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

BIDW-12

Static Pressure (Pa x 100)

Class Max RPM

I 3205

II 4180

III

III 4250

7½

1½

Static Pressure (in. wg)

0 1 2 3 4 5 6 7 8 9

1300

1800

50% WOV

2300

3205

2800

3700

4250

4180

60% WOV

RPM BHP % WOV Density 0.075 lb/ft Density 1.2 kg/m

70% WOV

Volume (cfm x 1000)

0 2 4 6 8 10 12 14

Volume (m /hr x 1000)

80% WOV

90% WOV

12 BIDW

% WOV = (CFM X 100) / (RPM X 2.08)

Sound Power [dB Ref 10

RPM %WOV 1 2 3 4 5 6 7 8 L

900 100 68 74 73 72 70 65 58 52 74

80 68 74 73 72 69 65 58 52 74 60 67 69 72 72 69 65 58 51 74 50 67 69 72 72 69 65 58 52 74

1300 100 74 78 81 77 73 71 66 58 79

1900 100 83 84 87 86 82 78 77 69 88

2600 100 92 95 91 97 93 88 88 87 98

3800 100 98 98 97 103 100 95 94 95 105

4250 100 100 101 99 104 103 98 96 97 107

The sound power level ratings shown are in decibels, referred to 10

ratings shown have been calculated per AMCA International Standard 301.

40 67 69 72 72 69 64 58 51 73

80 71 77 80 74 71 68 62 55 77 60 71 74 75 73 70 67 62 55 75 50 71 74 75 72 71 67 63 55 75 40 72 74 74 72 71 68 63 55 75

80 81 81 85 84 79 75 71 64 85 60 80 80 81 83 78 73 70 65 84 50 83 83 81 83 78 73 71 66 84 40 83 83 81 83 79 73 71 66 84

80 90 96 89 96 90 85 84 79 96 60 89 93 87 92 88 83 82 77 93 50 89 90 87 91 87 83 81 77 92 40 90 90 87 90 87 83 81 78 92

80 96 95 94 100 97 92 90 87 101 60 91 94 93 97 94 90 88 85 99 50 92 96 94 97 93 90 88 86 99 40 91 97 95 98 94 90 88 86 100

80 97 98 97 102 100 95 92 90 104 60 93 97 96 99 97 93 90 88 101 50 93 99 97 99 96 92 90 88 101 40 93 99 98 100 97 93 91 88 102

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

900 100 87 82 75 65 65 62 53 45 72

1300 100 93 83 82 74 72 71 64 54 79

1900 100 99 90 92 84 80 79 75 67 88

2600 100 105 95 94 95 88 87 84 80 96

3800 100 111 104 101 104 99 97 94 92 105

4250 100 112 107 103 105 102 99 96 95 108

-12

watts]

Outlet Sound Power, L

80 85 78 74 64 65 60 51 44 71 60 83 75 73 63 64 60 51 44 70 50 85 76 73 63 64 60 51 44 70 40 87 77 73 63 64 60 52 44 70

80 91 81 80 71 70 67 59 50 77 60 90 80 80 69 69 65 59 51 76 50 92 81 80 69 69 65 59 52 76 40 94 82 80 69 69 65 59 52 76

80 96 88 90 82 78 76 70 61 86 60 96 88 90 80 76 73 68 62 84 50 98 87 87 79 76 73 68 63 83 40 100 90 88 79 76 73 68 63 84

80 102 92 91 91 86 83 79 71 92 60 102 90 89 90 83 80 75 70 90

50 104 92 90 90 83 80 75 71 91 40 104 94 91 90 83 80 75 72 91

80 110 101 98 101 97 94 89 85 102 60 109 99 96 97 93 91 86 82 99 50 109 102 97 97 93 90 86 83 99 40 110 104 100 97 92 89 86 83 99

80 112 105 100 102 100 97 92 88 105 60 110 103 98 99 96 93 89 85 101 50 110 105 100 99 96 92 89 85 101 40 111 107 103 100 95 92 89 86 102

, L

A and outlet

13 BIDW

Wheel Diameter = 121⁄2 in.

Outlet Area = 1.89 ft.

Tip Speed = 3.53 x RPM

Maximum BHP = (RPM/1631)

Minimum Starting HP = 1⁄2

Maximum RPM Class I = 2908

Maximum RPM Class II = 3792

Maximum RPM Class III = 4100

CFM OV

1500 793 765 0.10 931 0.18 1077 0.26 1800 952 842 0.14 1002 0.22 1133 0.32 1256 0.42 1365 0.53 2100 1111 927 0.18 1076 0.28 1202 0.39 1313 0.49 1421 0.61 1519 0.74 1611 0.86 2400 1269 1017 0.24 1153 0.35 1275 0.47 1382 0.58 1479 0.71 1575 0.84 1665 0.98 1749 1.12 1829 1.27 2700 1428 1110 0.32 1233 0.43 1350 0.56 1455 0.69 1550 0.82 1636 0.96 1722 1.11 1805 1.26 1884 1.42 1959 1.58 3000 1587 1205 0.40 1321 0.53 1428 0.67 1530 0.81 1622 0.96 1708 1.10 1787 1.26 1863 1.41 1941 1.58 2015 1.75 3300 1746 1301 0.51 1410 0.65 1509 0.79 1606 0.94 1697 1.10 1780 1.26 1859 1.43 1933 1.59 2003 1.76 2072 1.94 3600 1904 1399 0.63 1502 0.78 1595 0.93 1685 1.10 1773 1.27 1855 1.44 1932 1.62 2005 1.79 2074 1.97 2140 2.16 3900 2063 1499 0.77 1596 0.94 1685 1.10 1767 1.27 1851 1.45 1931 1.63 2006 1.82 2078 2.02 2146 2.21 2211 2.40 4200 2222 1600 0.93 1690 1.11 1776 1.29 1855 1.47 1932 1.65 2008 1.85 2082 2.05 2153 2.25 2220 2.46 2284 2.67 4500 2380 1701 1.12 1786 1.31 1868 1.50 1945 1.69 2016 1.89 2089 2.09 2160 2.30 2229 2.51 2295 2.73 2358 2.95 4800 2539 1803 1.33 1883 1.54 1962 1.74 2035 1.94 2105 2.15 2171 2.35 2240 2.57 2306 2.80 2371 3.03 2433 3.26 5100 2698 1906 1.57 1982 1.79 2056 2.00 2127 2.22 2195 2.43 2259 2.65 2321 2.88 2386 3.11 2448 3.35 2509 3.59 5400 2857 2010 1.83 2081 2.07 2152 2.30 2221 2.52 2286 2.75 2348 2.98 2408 3.21 2467 3.45 2528 3.70 2587 3.95 5700 3015 2114 2.13 2182 2.38 2248 2.62 2315 2.86 2378 3.10 2439 3.34 2497 3.58 2553 3.83 2609 4.08 2667 4.34 6000 3174 2218 2.45 2283 2.71 2346 2.98 2410 3.23 2471 3.48 2530 3.73 2587 3.98 2642 4.24 2694 4.50 2748 4.77

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

3000 1587 2015 1.75 2154 2.10 2282 2.46 3280 1735 2068 1.92 2206 2.30 2334 2.68 2453 3.07 3560 1883 2130 2.12 2260 2.50 2386 2.91 2505 3.32 2617 3.75 2724 4.18 3840 2031 2197 2.35 2320 2.74 2440 3.15 2558 3.58 2669 4.03 2775 4.48 2876 4.95 4120 2179 2264 2.59 2386 3.00 2499 3.42 2611 3.86 2722 4.33 2827 4.80 2927 5.29 3024 5.78 3116 6.28 4400 2328 2333 2.85 2453 3.29 2565 3.73 2671 4.18 2775 4.65 2880 5.14 2980 5.64 3076 6.16 3168 6.68 3257 7.21 4680 2476 2403 3.13 2521 3.59 2632 4.05 2737 4.52 2836 5.00 2933 5.50 3033 6.02 3128 6.55 3220 7.09 3309 7.64 4960 2624 2474 3.43 2591 3.92 2700 4.40 2803 4.89 2902 5.39 2995 5.90 3086 6.41 3181 6.97 3273 7.53 3361 8.10 5240 2772 2545 3.75 2661 4.26 2769 4.77 2871 5.29 2969 5.81 3061 6.33 3150 6.87 3236 7.41 3326 7.98 3414 8.57 5520 2920 2619 4.10 2732 4.63 2839 5.16 2940 5.71 3036 6.25 3128 6.79 3217 7.35 3302 7.91 3384 8.48 3467 9.07 5800 3068 2694 4.48 2804 5.02 2909 5.58 3010 6.15 3105 6.72 3196 7.28 3284 7.86 3368 8.44 3449 9.03 3528 9.62 6080 3216 2770 4.89 2878 5.45 2981 6.02 3080 6.61 3174 7.20 3265 7.80 3351 8.40 3435 9.00 3516 9.61 3594 10.2 6360 3365 2851 5.33 2953 5.90 3053 6.49 3151 7.10 3244 7.72 3334 8.34 3420 8.96 3503 9.59 3583 10.2 3661 10.9 6640 3513 2933 5.81 3029 6.39 3128 7.00 3223 7.62 3315 8.26 3404 8.91 3489 9.56 3571 10.2 3651 10.9 3728 11.5 6920 3661 3016 6.32 3109 6.91 3203 7.54 3296 8.18 3387 8.83 3474 9.50 3559 10.2 3640 10.9 3719 11.5 3796 12.0 7200 3809 3100 6.86 3191 7.48 3279 8.11 3371 8.77 3459 9.44 3546 10.1 3629 10.8 3710 10.5 3788 12.2 3864 12.9

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

4500 2380 3275 7.36 3361 7.90 3445 8.46 4830 2555 3337 7.88 3422 8.45 3505 9.02 3585 9.61 3664 10.2 5160 2730 3399 8.43 3484 9.02 3566 9.62 3646 10.2 3724 10.8 3875 12.1 5490 2904 3462 9.02 3546 9.63 3628 10.3 3708 10.9 3786 11.5 3935 12.8 4078 14.1 5820 3079 3533 9.67 3610 10.3 3691 10.9 3771 11.6 3848 12.2 3997 13.6 6150 3253 3611 10.4 3686 11.0 3760 11.6 3834 12.3 3911 13.0 4059 14.4 6480 3428 3689 11.1 3764 11.8 3837 12.4 3909 13.1 3978 13.8 6810 3603 3769 11.9 3843 12.6 3916 13.3 3987 14.0 4055 14.7 7140 3777 3850 12.8 3923 13.5 3995 14.2 4065 14.9 7470 3952 3931 13.7 4004 14.4 4075 15.1 7800 4126 4013 14.6 4086 15.4 8130 4301 4096 15.6 8460 4476 8790 4650 9120 4825 9450 5000

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

BIDW-13

Static Pressure (Pa x 100)

Class Max RPM

I 2908

II 3792

III 4100

7½

Static Pressure (in. wg)

1½

0 2 4 6 8 10 12

1200

1700

2500

2100

2908

50% WOV

60% WOV

4100

3792

3400

70% WOV

RPM BHP % WOV Density 0.075 lb/ft Density 1.2 kg/m

Volume (cfm x 1000)

0 2 4 6 8 10 12 14 16 18 20

Volume (m /hr x 1000)

80% WOV

90% WOV

13 BIDW

% WOV = (CFM X 100) / (RPM X 2.79)

Sound Power [dB Ref 10

RPM %WOV 1 2 3 4 5 6 7 8 L

850 100 71 77 75 74 71 67 59 53 76

80 71 76 75 74 71 66 59 53 75 60 69 71 74 74 70 66 59 53 75 50 70 71 74 74 70 66 59 53 75

1200 100 76 80 81 77 74 72 67 59 80

1700 100 85 84 88 86 81 79 77 68 88

2400 100 94 96 93 98 94 89 89 88 99

3500 100 101 99 98 105 100 96 95 96 106

4100 100 103 103 102 107 105 100 98 99 109

The sound power level ratings shown are in decibels, referred to 10

ratings shown have been calculated per AMCA International Standard 301.

40 69 71 74 74 70 66 59 53 75

80 74 79 81 75 72 69 63 55 78 60 73 76 76 74 71 68 63 55 76 50 73 75 75 73 72 68 63 56 76 40 74 75 74 73 72 69 63 56 76

80 83 81 86 85 79 75 71 63 85 60 82 80 82 84 78 73 70 64 84 50 84 83 81 84 78 73 71 66 84 40 85 82 82 84 78 73 71 66 84

80 92 97 90 97 91 86 85 79 97 60 91 94 88 93 89 84 82 78 94 50 91 92 88 93 88 84 82 78 93 40 91 91 88 92 88 84 82 79 93

80 98 96 95 102 97 92 91 88 103 60 93 96 94 99 95 90 89 86 100 50 94 98 95 98 94 90 89 86 100 40 93 99 96 100 94 91 89 87 101

80 100 101 99 104 101 96 94 92 106 60 96 99 98 101 99 94 92 90 103 50 96 101 99 101 98 94 93 90 103 40 96 102 101 103 99 95 93 90 104

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

850 100 89 83 76 66 67 63 53 46 74

1200 100 95 83 83 74 73 72 64 54 80

1700 100 100 88 94 83 80 79 75 66 89

2400 100 105 95 95 96 89 88 85 81 97

3500 100 112 104 102 105 100 98 94 93 106

4100 100 115 109 106 108 104 101 98 97 110

-12

watts]

Outlet Sound Power, L

80 87 79 76 65 67 61 52 45 72 60 85 76 75 64 66 61 52 45 71 50 87 76 75 64 66 61 52 45 71 40 89 78 75 64 66 61 53 45 72

80 92 81 81 71 71 68 59 51 78 60 91 80 81 69 71 66 59 52 76 50 93 80 81 69 70 66 59 52 77 40 96 81 81 69 71 66 60 53 77

80 97 87 91 81 78 76 69 60 86 60 97 87 91 78 77 73 67 61 85 50 99 86 88 78 77 73 68 62 83 40 101 89 89 78 77 73 68 63 84

80 103 92 92 92 86 84 80 71 93 60 103 91 90 91 84 81 76 71 91

50 105 92 91 91 83 80 76 72 91 40 105 95 92 91 83 81 76 72 91

80 111 101 99 102 97 95 90 86 103 60 110 99 97 98 94 92 87 83 100 50 110 102 98 98 93 91 87 83 100 40 111 104 101 98 93 90 87 84 100

80 114 106 102 105 102 99 94 90 107 60 113 105 101 101 98 95 91 87 103 50 113 107 102 101 98 94 91 87 104 40 114 109 105 102 97 94 91 88 104

, L

A and outlet

15 BIDW

Wheel Diameter = 15 in.

Outlet Area = 2.33 ft.

Tip Speed = 3.93 x RPM

Maximum BHP = (RPM/1368)

Minimum Starting HP = 1⁄2

Maximum RPM Class I = 2617

Maximum RPM Class II = 3413

Maximum RPM Class III = 3900

CFM OV

1900 815 697 0.13 846 0.22 976 0.33 2260 969 766 0.17 908 0.28 1025 0.40 1136 0.53 1234 0.66 2620 1124 840 0.23 973 0.35 1087 0.48 1185 0.62 1282 0.76 1371 0.92 1453 1.08 2980 1278 919 0.30 1041 0.44 1151 0.58 1247 0.73 1334 0.88 1420 1.04 1501 1.22 1577 1.39 1648 1.57 3340 1433 1000 0.39 1111 0.53 1217 0.69 1311 0.86 1396 1.02 1474 1.19 1551 1.37 1626 1.56 1697 1.75 1764 1.95 3700 1587 1083 0.50 1187 0.65 1284 0.82 1376 1.00 1459 1.18 1536 1.36 1608 1.55 1676 1.74 1746 1.95 1813 2.16 4060 1742 1167 0.62 1266 0.79 1355 0.97 1443 1.16 1524 1.35 1600 1.55 1670 1.75 1737 1.96 1800 2.16 1863 2.38 4420 1896 1253 0.77 1346 0.95 1430 1.14 1512 1.34 1591 1.55 1665 1.76 1734 1.98 1800 2.20 1862 2.42 1921 2.64 4780 2051 1340 0.94 1428 1.14 1509 1.34 1583 1.55 1659 1.77 1731 1.99 1799 2.23 1864 2.46 1925 2.70 1984 2.93 5140 2206 1428 1.13 1511 1.35 1588 1.56 1660 1.78 1729 2.01 1799 2.25 1866 2.50 1929 2.75 1990 3.00 2047 3.25 5500 2360 1517 1.35 1594 1.58 1668 1.81 1738 2.05 1803 2.28 1869 2.53 1933 2.79 1995 3.05 2055 3.32 2112 3.59 5860 2515 1606 1.59 1679 1.85 1750 2.09 1817 2.34 1880 2.59 1940 2.84 2003 3.12 2063 3.39 2121 3.67 2178 3.95 6220 2669 1696 1.87 1765 2.15 1833 2.41 1897 2.66 1958 2.93 2016 3.20 2074 3.47 2132 3.76 2189 4.05 2244 4.35 6580 2824 1786 2.18 1852 2.47 1916 2.75 1979 3.02 2038 3.30 2094 3.58 2148 3.87 2203 4.16 2258 4.46 2312 4.77 6940 2978 1877 2.53 1940 2.83 2000 3.13 2061 3.42 2118 3.71 2173 4.00 2226 4.30 2277 4.60 2329 4.91 2381 5.23 7300 3133 1969 2.91 2028 3.23 2085 3.55 2144 3.85 2199 4.15 2253 4.46 2304 4.77 2354 5.08 2402 5.40 2452 5.73

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

3750 1609 1820 2.19 1945 2.62 2060 3.08 4100 1759 1868 2.41 1993 2.87 2107 3.35 2215 3.84 4450 1909 1926 2.66 2041 3.13 2155 3.63 2262 4.15 2363 4.68 2459 5.22 4800 2060 1987 2.95 2098 3.43 2204 3.94 2310 4.48 2410 5.04 2505 5.60 2596 6.18 5150 2210 2049 3.26 2158 3.77 2260 4.29 2358 4.83 2458 5.41 2553 6.00 2643 6.61 2730 7.22 2813 7.85 5500 2360 2112 3.59 2220 4.13 2320 4.68 2415 5.23 2507 5.81 2601 6.43 2691 7.05 2777 7.69 2860 8.34 2940 9.00 5850 2510 2176 3.94 2282 4.52 2381 5.09 2475 5.67 2564 6.27 2650 6.87 2739 7.53 2825 8.19 2908 8.86 2988 9.55 6200 2660 2240 4.32 2345 4.93 2444 5.54 2536 6.15 2624 6.76 2709 7.39 2789 8.03 2874 8.71 2956 9.41 3035 10.1 6550 2811 2306 4.73 2410 5.36 2507 6.01 2598 6.65 2686 7.29 2769 7.95 2849 8.61 2926 9.28 3005 10.0 3084 10.7 6900 2961 2374 5.18 2475 5.83 2570 6.50 2661 7.18 2748 7.85 2830 8.53 2909 9.22 2986 9.92 3059 10.6 3132 11.4 7250 3111 2442 5.66 2540 6.33 2635 7.03 2725 7.73 2810 8.45 2892 9.15 2971 9.87 3046 10.6 3119 11.3 3190 12.1 7600 3261 2512 6.17 2608 6.88 2700 7.59 2789 8.32 2874 9.07 2955 9.81 3033 10.6 3108 11.3 3180 12.1 3250 12.8 7950 3412 2586 6.74 2677 7.45 2767 8.19 2854 8.95 2938 9.72 3018 10.5 3095 11.3 3170 12.1 3242 12.8 3311 13.6 8300 3562 2662 7.35 2746 8.07 2835 8.84 2920 9.61 3003 10.4 3082 11.2 3159 12.0 3232 12.8 3304 13.7 3373 14.5 8650 3712 2738 8.00 2821 8.75 2904 9.52 2987 10.3 3068 11.1 3147 12.0 3222 12.8 3296 13.7 3366 14.5 3435 15.4 9000 3862 2815 8.69 2896 9.47 2973 10.2 3056 11.1 3135 11.9 3212 12.8 3287 13.6 3359 14.5 3430 15.4 3498 16.3

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

5700 2446 2967 9.31 3045 10.0 3119 10.7 6120 2626 3024 10.0 3101 10.7 3176 11.4 3248 12.2 3319 12.9 6540 2806 3082 10.7 3159 11.4 3233 12.2 3305 13.0 3375 13.7 3510 15.3 3639 16.9 6960 2987 3141 11.5 3217 12.2 3291 13.0 3362 13.8 3432 14.6 3567 16.2 3695 17.9 3818 19.6 7380 3167 3213 12.3 3281 13.1 3349 13.9 3420 14.7 3490 15.5 3624 17.2 3752 18.9 3874 20.7 7800 3347 3285 13.3 3353 14.1 3419 14.9 3483 15.7 3548 16.5 3682 18.2 3809 20.0 8220 3527 3359 14.3 3426 15.1 3491 15.9 3555 16.7 3617 17.6 3740 19.3 3867 21.0 8640 3708 3433 15.3 3500 16.2 3565 17.0 3628 17.9 3690 18.8 3809 20.5 9060 3888 3509 16.4 3575 17.3 3639 18.2 3701 19.1 3763 20.0 3881 21.8 9480 4068 3585 17.6 3650 18.5 3714 19.5 3776 20.4 3837 21.3

9900 4248 3661 18.8 3726 19.8 3790 20.7 3851 21.7 10320 4429 3739 20.1 3803 21.1 3866 22.1 10740 4609 3818 21.4 3881 22.5 11160 4789 3897 22.9 11580 4969 12000 5150

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

BIDW-15

Static Pressure (Pa x 100)

Class Max RPM

I 2617

II 3413

III 3900

50% WOV

60% WOV

1900

3000

2617

2300

3700

3413

7½

Static Pressure (in. wg)

1½

0 2 4 6 8 10 12 14 16

1100

1500

70% WOV

3900

RPM BHP % WOV Density 0.075 lb/ft Density 1.2 kg/m

80% WOV

Volume (cfm x 1000)

0 5 10 15 20 25

Volume (m /hr x 1000)

15 BIDW

90% WOV

% WOV = (CFM X 100) / (RPM X 3.82)

Sound Power [dB Ref 10

RPM %WOV 1 2 3 4 5 6 7 8 L

800 100 74 79 77 76 73 68 61 55 78

80 74 79 77 76 72 68 60 54 77 60 72 73 76 76 72 67 60 54 77 50 73 73 77 76 72 67 60 54 77

1100 100 78 82 82 78 75 73 67 59 81

1600 100 87 87 90 88 83 80 78 70 89

2200 100 96 97 95 99 94 91 90 89 100

3100 100 101 99 99 105 100 96 96 97 106

3900 100 106 106 104 109 106 102 101 101 111

The sound power level ratings shown are in decibels, referred to 10

ratings shown have been calculated per AMCA International Standard 301.

40 72 74 76 75 72 67 60 54 77

80 76 81 81 76 73 70 63 55 79 60 75 78 77 75 72 69 63 56 77 50 75 78 76 75 72 69 64 56 77 40 76 78 75 75 73 69 64 56 77

80 85 84 88 86 80 77 72 64 87 60 84 82 84 86 79 75 71 66 86 50 86 85 84 85 79 75 72 67 85 40 87 84 84 85 80 75 72 67 86

80 95 97 93 98 92 87 86 80 98 60 93 94 90 94 89 85 83 78 95 50 92 93 90 93 89 85 83 79 94 40 93 92 90 93 89 85 83 79 94

80 98 96 97 103 97 93 91 88 103 60 94 96 95 99 94 91 89 86 100 50 95 98 96 99 94 91 89 87 100 40 95 99 97 100 94 91 90 87 101

80 103 103 102 106 103 98 96 94 108 60 99 102 101 103 101 96 94 92 105 50 99 104 102 103 100 96 94 92 105 40 99 104 103 105 101 97 95 92 106

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

800 100 91 85 77 67 70 65 54 47 75

1100 100 94 84 83 75 74 72 64 54 80

1600 100 101 91 95 84 82 81 76 67 90

2200 100 105 97 96 96 90 89 86 82 97

3100 100 112 104 103 106 100 98 95 94 106

3900 100 117 111 108 110 106 103 100 99 112

-12

watts]

Outlet Sound Power, L

80 90 81 77 65 69 63 53 46 74 60 87 77 76 64 68 62 53 46 73 50 89 78 76 65 69 62 54 47 73 40 91 80 76 65 69 62 54 47 74

80 92 83 81 73 72 68 59 51 78 60 91 82 80 71 71 66 59 52 77 50 93 82 81 70 71 66 60 53 77 40 95 83 81 70 71 66 60 53 78

80 98 89 93 82 80 77 70 61 87 60 98 89 92 80 78 74 69 63 86 50 100 88 89 79 78 74 69 64 85 40 102 91 90 80 78 74 69 64 86

80 103 94 93 93 87 85 80 72 94 60 103 92 91 91 85 82 77 72 92

50 104 94 92 92 84 81 77 73 92 40 105 96 93 91 84 81 77 73 92

80 111 101 100 102 97 95 90 86 103 60 109 99 98 98 94 91 87 83 100 50 110 101 99 98 93 91 87 83 100 40 111 104 101 98 93 90 87 84 100

80 116 108 105 107 103 101 96 92 109 60 114 106 103 103 100 97 93 89 105 50 115 108 104 103 99 96 93 89 105 40 116 111 106 103 99 96 93 89 106

, L

A and outlet

16 BIDW

Wheel Diameter = 161⁄2 in.

Outlet Area = 2.82 ft.

Tip Speed = 4.32 x RPM

Maximum BHP = (RPM/1167)

Minimum Starting HP = 1⁄2

Maximum RPM Class I = 2379

Maximum RPM Class II = 3103

Maximum RPM Class III = 3750

CFM OV

2550 904 669 0.19 801 0.31 913 0.45 1014 0.60

2980 1056 733 0.25 859 0.39 963 0.54 1058 0.70 1146 0.87 1227 1.05

3410 1209 803 0.33 918 0.48 1020 0.65 1108 0.82 1191 1.00 1271 1.19 1345 1.39 1414 1.60

3840 1361 875 0.42 980 0.59 1078 0.77 1165 0.96 1243 1.15 1315 1.35 1389 1.57 1457 1.79 1522 2.02 1584 2.25

4270 1514 949 0.54 1046 0.72 1138 0.92 1223 1.12 1299 1.33 1369 1.55 1435 1.76 1502 2.00 1566 2.24 1627 2.49

4700 1666 1024 0.68 1116 0.87 1200 1.08 1282 1.30 1357 1.53 1426 1.76 1491 2.00 1552 2.24 1611 2.48 1671 2.75

5130 1819 1100 0.84 1187 1.05 1265 1.27 1343 1.51 1416 1.75 1484 2.01 1547 2.26 1607 2.51 1664 2.77 1719 3.03

5560 1971 1178 1.02 1260 1.26 1335 1.49 1406 1.74 1476 2.00 1543 2.27 1605 2.54 1664 2.81 1721 3.09 1774 3.36

5990 2124 1256 1.24 1334 1.49 1406 1.74 1472 2.00 1539 2.27 1603 2.56 1664 2.85 1722 3.14 1778 3.43 1831 3.73

6420 2276 1336 1.48 1408 1.76 1477 2.03 1541 2.30 1602 2.58 1665 2.88 1724 3.18 1781 3.49 1836 3.80 1888 4.12

6850 2429 1416 1.76 1484 2.06 1550 2.34 1612 2.63 1670 2.92 1728 3.23 1786 3.55 1842 3.87 1895 4.20 1947 4.54

7280 2581 1496 2.07 1560 2.39 1624 2.69 1684 3.00 1740 3.31 1794 3.62 1849 3.95 1903 4.29 1955 4.64 2006 4.99

7710 2734 1577 2.42 1638 2.76 1698 3.08 1756 3.40 1811 3.73 1863 4.06 1913 4.39 1966 4.75 2017 5.11 2066 5.47

8140 2886 1658 2.81 1716 3.16 1773 3.51 1829 3.85 1882 4.19 1933 4.54 1982 4.89 2030 5.24 2080 5.62 2128 6.00

8570 3039 1740 3.23 1795 3.61 1849 3.98 1903 4.34 1955 4.69 2004 5.06 2052 5.42 2098 5.79 2143 6.17 2191 6.57

9000 3191 1822 3.71 1874 4.10 1926 4.49 1978 4.87 2028 5.24 2076 5.62 2122 6.00 2167 6.39 2210 6.78 2254 7.18

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

4550 1613 1656 2.65 1769 3.18 1874 3.73

4980 1765 1701 2.93 1813 3.49 1918 4.07 2015 4.66

5410 1918 1755 3.25 1858 3.81 1962 4.42 2059 5.05 2151 5.69 2238 6.34

5840 2070 1811 3.60 1911 4.19 2007 4.80 2103 5.46 2194 6.13 2281 6.81 2363 7.52 2443 8.23

6270 2223 1868 3.98 1967 4.60 2059 5.23 2148 5.89 2239 6.59 2325 7.31 2407 8.04 2486 8.79 2562 9.55

6700 2375 1926 4.39 2024 5.05 2115 5.71 2201 6.39 2284 7.09 2369 7.84 2451 8.60 2530 9.37 2605 10.2 2678 11.0

7130 2528 1985 4.83 2082 5.53 2172 6.23 2257 6.94 2338 7.66 2415 8.39 2496 9.18 2574 10.0 2649 10.8 2721 11.6

7560 2680 2045 5.30 2140 6.03 2229 6.78 2314 7.52 2394 8.27 2470 9.04 2543 9.81 2619 10.6 2693 11.5 2766 12.4

7990 2833 2106 5.81 2200 6.58 2288 7.36 2371 8.14 2450 8.93 2526 9.72 2599 10.5 2668 11.4 2738 12.2 2810 13.1

8420 2985 2169 6.36 2260 7.16 2347 7.97 2429 8.80 2508 9.62 2583 10.5 2655 11.3 2724 12.1 2791 13.0 2856 13.9

8850 3138 2232 6.96 2321 7.78 2407 8.63 2488 9.49 2566 10.4 2640 11.2 2711 12.1 2780 13.0 2846 13.9 2911 14.8

9280 3290 2297 7.60 2384 8.46 2467 9.33 2547 10.2 2624 11.1 2698 12.0 2768 12.9 2837 13.9 2902 14.8 2966 15.7

9710 3443 2366 8.31 2447 9.17 2529 10.1 2608 11.0 2684 11.9 2756 12.9 2826 13.8 2894 14.8 2959 15.7 3022 16.7 10140 3595 2436 9.07 2512 10.0 2592 10.9 2669 11.8 2744 12.8 2816 13.8 2885 14.8 2952 15.8 3017 16.8 3079 17.8 10570 3748 2506 9.88 2581 10.8 2656 11.7 2731 12.7 2804 13.7 2875 14.7 2944 15.7 3010 16.8 3075 17.8 3137 18.9 11000 3900 2577 10.7 2651 11.7 2721 12.6 2795 13.6 2866 14.7 2936 15.7 3004 16.8 3069 17.8 3133 18.9 3195 20.0

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

7000 2482 2708 11.4 2778 12.3 2846 13.1 2912 14.0

7500 2659 2759 12.2 2829 13.1 2897 14.0 2963 14.9 3027 15.8

8000 2836 2811 13.1 2881 14.0 2948 14.9 3013 15.9 3077 16.8 3200 18.7 3317 20.6

8500 3014 2866 14.0 2933 15.0 3000 15.9 3065 16.9 3128 17.8 3250 19.8 3367 21.8 3479 23.9

9000 3191 2930 15.1 2992 16.0 3053 16.9 3117 17.9 3180 18.9 3302 21.0 3418 23.1 3529 25.2 3636 27.4 3739 29.6

9500 3368 2995 16.2 3057 17.2 3117 18.1 3175 19.1 3233 20.1 3354 22.2 3469 24.4 3580 26.6 3687 28.8 10000 3546 3061 17.4 3122 18.4 3181 19.4 3239 20.4 3296 21.4 3406 23.5 3521 25.7 3632 28.0 3738 30.3 10500 3723 3127 18.7 3188 19.7 3247 20.7 3304 21.8 3360 22.8 3469 25.0 3574 27.2 3684 29.5 11000 3900 3195 20.0 3255 21.1 3313 22.1 3370 23.2 3426 24.3 3533 26.5 3637 28.8 3736 31.0 11500 4078 3263 21.4 3322 22.5 3380 23.6 3437 24.8 3492 25.9 3599 28.2 3701 30.5 12000 4255 3332 22.8 3391 24.0 3448 25.2 3504 26.4 3559 27.5 3665 29.9 12500 4432 3401 24.4 3460 25.6 3517 26.8 3572 28.0 3626 29.2 3731 31.7 13000 4609 3472 26.0 3529 27.2 3586 28.5 3641 29.7 3694 31.0 13500 4787 3543 27.7 3600 29.0 3655 30.2 3710 31.6 14000 4964 3616 29.5 3671 30.8 3726 32.1 14500 5141 3689 31.4 3744 32.7

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

BIDW-16

Static Pressure (Pa x 100)

Class Max RPM

I 2379

II 3103

III 3750

50% WOV

60% WOV

2000

2700

2379

7½

1400

1700

Static Pressure (in. wg)

1½

0 2 4 6 8 10 12 14 16 18 20

1000

3750

3600

3400

3103

70% WOV

RPM BHP % WOV Density 0.075 lb/ft Density 1.2 kg/m

80% WOV

Volume (cfm x 1000)

0 5 10 15 20 25 30

16 BIDW

90% WOV

% WOV = (CFM X 100) / (RPM X 5.09)

Sound Power [dB Ref 10

RPM %WOV 1 2 3 4 5 6 7 8 L

700 100 75 79 76 75 72 67 59 53 77

80 74 79 76 75 71 66 59 53 76 60 72 74 76 75 71 66 59 53 76 50 73 74 76 75 71 66 59 53 76

1000 100 79 84 83 79 75 73 67 59 81

1400 100 87 87 89 87 82 80 77 68 89

2000 100 97 97 97 99 95 91 91 89 101

2800 100 101 100 101 105 100 97 97 97 106

3750 100 109 108 106 112 108 104 103 103 113

The sound power level ratings shown are in decibels, referred to 10

ratings shown have been calculated per AMCA International Standard 301.

40 72 74 76 75 71 66 59 53 76

80 77 83 81 76 73 70 63 55 79 60 76 80 77 75 73 69 63 55 78 50 76 79 77 75 73 69 63 56 78 40 77 80 76 75 73 69 63 56 78

80 84 85 88 85 79 76 71 63 86 60 83 83 85 84 78 74 70 65 85 50 86 85 84 84 78 74 71 66 85 40 86 84 84 84 79 74 71 66 85

80 96 97 95 98 92 88 86 80 98 60 94 94 92 94 90 86 83 79 95 50 93 93 92 94 89 85 83 79 95 40 94 93 91 93 89 85 83 80 95

80 99 97 98 103 97 93 91 88 103 60 95 97 97 99 94 91 89 86 100 50 96 98 97 99 94 91 90 87 100 40 96 100 98 100 94 91 90 87 101

80 106 105 104 109 105 100 98 96 110 60 102 105 103 106 102 98 96 94 108 50 102 106 104 106 102 98 97 94 107 40 102 107 105 107 103 99 97 94 108

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

700 100 90 83 75 68 69 63 53 46 74

1000 100 93 85 83 76 75 72 64 53 80

1400 100 99 92 93 84 82 80 75 66 89

2000 100 105 97 97 96 91 89 86 82 98

2800 100 111 104 104 105 100 98 95 94 107

3750 100 119 112 110 112 108 106 102 101 114

-12

watts]

Outlet Sound Power, L

80 88 80 75 66 68 61 52 45 73 60 85 77 74 65 67 61 52 45 72 50 87 78 74 65 67 61 52 45 72 40 89 79 74 66 67 61 52 45 72

80 92 84 81 74 72 68 59 51 78 60 90 83 80 72 71 66 59 52 77 50 92 83 80 71 71 66 60 53 77 40 94 84 80 71 71 66 60 53 77

80 96 90 90 82 79 76 69 59 86 60 96 90 89 80 77 73 68 62 85 50 97 88 87 79 77 73 68 63 84 40 99 91 88 79 78 73 68 63 84

80 102 95 94 93 88 85 80 71 94 60 102 93 92 91 85 82 77 72 92

50 103 94 93 91 85 81 77 73 92 40 104 96 93 91 85 82 77 73 92

80 110 101 101 102 98 95 90 86 103 60 108 99 99 98 94 91 87 83 100 50 109 102 99 98 94 91 87 83 100 40 111 104 101 98 93 91 87 84 100

80 118 110 107 109 105 103 98 94 111 60 117 108 105 105 102 99 95 91 107 50 117 110 106 105 101 98 95 91 107 40 118 113 108 105 101 98 95 91 108

, L

A and outlet

18 BIDW

Wheel Diameter = 181⁄4 in.

Outlet Area = 3.45 ft.

Tip Speed = 4.78 x RPM

Maximum BHP = (RPM/970)

Minimum Starting HP = 3⁄4

Maximum RPM Class I = 2149

Maximum RPM Class II = 2801

Maximum RPM Class III = 3530

CFM OV

3000 869 595 0.23 700 0.36 796 0.51 892 0.69 980 0.89

3600 1043 670 0.33 765 0.49 850 0.65 928 0.82 1012 1.03 1088 1.25 1161 1.48

4200 1217 749 0.46 836 0.64 913 0.82 986 1.01 1052 1.21 1124 1.44 1194 1.69 1259 1.94 1320 2.20 1386 2.49

4800 1391 831 0.63 911 0.83 983 1.03 1049 1.25 1113 1.46 1172 1.69 1230 1.92 1295 2.19 1356 2.48 1414 2.77

5400 1565 913 0.83 988 1.06 1055 1.29 1118 1.52 1177 1.76 1234 2.00 1288 2.25 1340 2.50 1392 2.77 1450 3.08

6000 1739 997 1.07 1068 1.33 1131 1.59 1190 1.84 1246 2.10 1299 2.37 1350 2.63 1400 2.91 1448 3.19 1494 3.47

6600 1913 1082 1.36 1149 1.66 1209 1.94 1265 2.22 1317 2.50 1368 2.78 1417 3.07 1463 3.37 1509 3.67 1554 3.97

7200 2086 1168 1.71 1231 2.03 1288 2.34 1341 2.65 1391 2.95 1439 3.26 1486 3.57 1531 3.89 1574 4.20 1616 4.53

7800 2260 1255 2.11 1314 2.46 1369 2.80 1419 3.13 1467 3.47 1513 3.80 1557 4.13 1601 4.47 1643 4.81 1683 5.15

8400 2434 1343 2.58 1398 2.95 1451 3.33 1499 3.69 1545 4.04 1589 4.40 1631 4.76 1672 5.12 1713 5.48 1752 5.84

9000 2608 1432 3.12 1483 3.51 1533 3.91 1580 4.31 1624 4.69 1666 5.08 1707 5.46 1747 5.84 1785 6.22 1823 6.61

9600 2782 1521 3.73 1569 4.14 1616 4.57 1662 5.00 1704 5.41 1745 5.82 1784 6.23 1822 6.64 1859 7.04 1895 7.45 10200 2956 1610 4.41 1655 4.85 1700 5.30 1744 5.76 1785 6.21 1824 6.64 1862 7.08 1899 7.52 1935 7.95 1970 8.38 10800 3130 1700 5.18 1742 5.64 1785 6.12 1827 6.60 1867 7.09 1905 7.55 1942 8.01 1977 8.47 2012 8.94 2046 9.39 11400 3304 1790 6.04 1830 6.52 1870 7.02 1910 7.53 1949 8.05 1986 8.55 2022 9.04 2057 9.52 2090 10.0 2123 10.5 12000 3478 1880 6.99 1918 7.50 1956 8.02 1995 8.55 2032 9.09 2068 9.63 2103 10.2 2137 10.7 2169 11.2 2201 11.7

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

6000 1739 1494 3.47 1593 4.11 1692 4.82 1784 5.54 1871 6.29 1961 7.10

6600 1913 1554 3.97 1639 4.58 1728 5.27 1820 6.04 1906 6.83 1988 7.64 2066 8.46 2149 9.36 2231 10.3

7200 2086 1616 4.53 1700 5.19 1778 5.86 1856 6.57 1942 7.41 2024 8.25 2102 9.12 2176 10.0 2248 10.9 2323 11.9

7800 2260 1683 5.15 1762 5.85 1838 6.56 1911 7.29 1980 8.02 2060 8.91 2138 9.81 2212 10.7 2283 11.7 2352 12.6

8400 2434 1752 5.84 1827 6.58 1900 7.34 1972 8.10 2040 8.88 2105 9.67 2174 10.6 2248 11.5 2319 12.5 2388 13.5

9000 2608 1823 6.61 1896 7.39 1965 8.18 2033 8.99 2101 9.82 2165 10.7 2226 11.5 2286 12.3 2355 13.4 2424 14.4

9600 2782 1895 7.45 1966 8.28 2034 9.12 2099 9.96 2162 10.8 2226 11.7 2287 12.6 2345 13.5 2402 14.4 2460 15.3 10200 2956 1970 8.38 2037 9.25 2104 10.1 2167 11.0 2228 11.9 2288 12.8 2348 13.8 2406 14.7 2462 15.7 2516 16.6 10800 3130 2046 9.39 2111 10.3 2174 11.2 2237 12.2 2297 13.1 2354 14.1 2410 15.0 2468 16.0 2523 17.0 2577 18.0 11400 3304 2123 10.5 2187 11.5 2248 12.4 2307 13.4 2366 14.4 2423 15.4 2477 16.4 2530 17.4 2585 18.4 2638 19.5 12000 3478 2201 11.7 2263 12.7 2322 13.7 2380 14.7 2437 15.8 2492 16.8 2546 17.9 2598 18.9 2649 20.0 2700 21.1 12600 3652 2280 13.0 2340 14.1 2398 15.1 2454 16.2 2508 17.3 2563 18.4 2616 19.4 2667 20.5 2717 21.7 2765 22.8 13200 3826 2360 14.4 2418 15.5 2475 16.6 2530 17.7 2583 18.9 2634 20.0 2686 21.1 2736 22.3 2786 23.4 2834 24.6 13800 4000 2440 15.9 2497 17.1 2552 18.2 2606 19.4 2658 20.6 2708 21.7 2757 22.9 2807 24.1 2855 25.3 2903 26.5 14400 4173 2521 17.5 2577 18.7 2631 19.9 2683 21.2 2734 22.4 2783 23.6 2831 24.8 2878 26.1 2926 27.3 2972 28.6 15000 4347 2603 19.2 2658 20.5 2710 21.8 2761 23.1 2810 24.3 2859 25.6 2906 26.9 2952 28.2 2997 29.4 3043 30.7

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

8000 2318 2364 12.9 2430 13.9 2495 14.9 2561 16.0 2630 17.1

8700 2521 2406 13.9 2472 15.0 2536 16.0 2598 17.1 2659 18.2 2779 20.4 2905 22.8

9400 2724 2448 15.0 2514 16.1 2578 17.2 2640 18.3 2700 19.4 2816 21.7 2926 24.1 3041 26.6 3156 29.2 10100 2927 2506 16.4 2559 17.3 2620 18.4 2682 19.6 2742 20.8 2858 23.2 2968 25.6 3073 28.1 3174 30.4 3283 33.4 10800 3130 2577 18.0 2629 19.0 2680 20.0 2729 21.0 2784 22.2 2900 24.7 3009 27.2 3115 29.8 3216 32.4 3313 35.1 11500 3333 2648 19.7 2700 20.8 2750 21.9 2799 22.9 2847 24.0 2942 26.3 3052 28.9 3156 31.6 3257 34.3 3354 37.1 12200 3536 2721 21.6 2772 22.7 2821 23.8 2870 25.0 2917 26.1 3009 28.4 3096 30.7 3199 33.4 3299 36.3 3396 39.1 12900 3739 2799 23.7 2846 24.8 2894 26.0 2942 27.1 2989 28.3 3079 30.7 3166 33.0 3250 35.5 3342 38.3 3438 41.3 13600 3942 2879 25.9 2926 27.1 2971 28.3 3015 29.5 3061 30.7 3150 33.2 3236 35.7 3319 38.2 3399 40.8 3481 43.5 14300 4144 2961 28.2 3006 29.5 3051 30.7 3094 32.0 3137 33.2 3223 35.8 3308 38.4 3390 41.1 3469 43.7 15000 4347 3043 30.7 3088 32.0 3132 33.3 3175 34.7 3217 36.0 3298 38.6 3380 41.3 3462 44.1 15700 4550 3127 33.4 3170 34.8 3214 36.1 3256 37.5 3297 38.9 3378 41.6 3456 44.4 16400 4753 3213 36.3 3255 37.7 3296 39.1 3338 40.5 3379 42.0 3458 44.8 17100 4956 3301 39.4 3342 40.9 3382 42.3 3421 43.8 3461 45.3 17800 5159 3389 42.7 3429 44.2 3469 45.7 3507 47.2 18500 5362 3478 46.2 3518 47.7

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

BIDW-18

Static Pressure (Pa x 100)

Class Max RPM

I 2149

II 2801

III 3530

2149

50% WOV

60% WOV

70% WOV

3530

3300

3000

2801

2500

25 30

7½

Static Pressure (in. wg)

1½

0 2 4 6 8 10 12 14 16 18 20 22 24

900

1200

1500

1800

RPM BHP % WOV Density 0.075 lb/ft Density 1.2 kg/m

80% WOV

Volume (cfm x 1000)

0 5 10 15 20 25 30 35 40

Volume (m /hr x 1000)

% WOV = (CFM X 100) / (RPM X 6.52)

Sound Power [dB Ref 10

-12

watts]

18 BIDW

90% WOV

RPM %WOV 1 2 3 4 5 6 7 8 L

600 100 76 75 74 76 68 62 56 51 75

80 74 73 71 74 67 60 54 50 73 60 73 70 69 74 67 60 54 50 73 50 72 70 69 74 67 60 54 50 73 40 72 70 68 75 67 60 54 50 74

900 100 78 89 84 82 77 72 65 60 83

80 78 87 82 78 72 68 60 54 80 60 75 82 77 77 72 67 60 55 78 50 74 79 75 76 72 67 61 56 77

1200 100 83 90 90 89 84 81 74 69 90

1700 100 89 91 97 94 90 88 82 77 96

2500 100 97 99 102 107 99 96 92 88 106

3530 100 103 107 109 112 110 105 102 98 114

The sound power level ratings shown are in decibels, referred to 10

ratings shown have been calculated per AMCA International Standard 301.

40 76 78 74 76 72 67 61 56 77

80 82 86 87 87 80 77 69 65 87 60 82 82 82 83 79 76 69 65 84 50 78 81 80 82 78 75 69 65 83 40 78 82 80 82 78 75 70 66 83

80 86 89 94 92 89 85 79 74 94 60 86 85 92 88 85 82 76 73 90 50 85 85 89 87 84 81 77 74 89 40 87 86 89 86 84 81 77 74 89

80 95 97 99 104 96 93 88 85 103 60 92 92 98 99 94 91 87 85 100 50 93 92 98 98 93 91 87 85 99 40 95 94 98 99 92 91 89 87 100

80 101 105 106 110 108 102 98 94 111 60 98 101 103 106 104 100 97 93 108 50 99 102 104 105 103 99 96 93 108 40 101 104 105 105 103 99 97 95 108

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

600 100 89 80 74 68 66 59 52 47 72

80 89 79 71 64 63 54 47 44 70 60 81 75 68 62 61 54 47 45 67 50 80 74 67 62 62 54 48 45 66 40 81 74 67 63 62 54 48 45 67

900 100 93 95 85 78 77 71 64 58 84

80 89 92 83 74 72 65 58 53 80 60 86 84 77 73 69 64 58 54 76 50 86 82 75 72 69 63 58 54 75 40 88 83 75 71 68 63 58 55 74

1200 100 100 92 90 85 85 80 74 67 89

80 95 90 88 82 81 74 67 61 86 60 91 86 83 77 77 71 65 61 81 50 91 85 82 76 76 71 65 61 80 40 92 85 80 75 75 70 65 62 80

1700 100 104 96 97 92 92 88 84 76 96

80 102 93 95 90 91 86 80 73 94 60 99 90 92 86 86 82 76 71 91

50 99 91 91 85 85 80 75 71 89 40 100 91 91 84 83 80 75 71 89

2500 100 110 105 104 111 103 98 94 89 110

80 107 102 100 106 99 94 90 84 106 60 104 97 96 99 96 92 87 82 101 50 105 98 95 98 94 90 86 82 99 40 108 101 96 95 93 89 86 82 98

3530 100 116 115 112 116 114 108 104 99 118

80 113 112 108 112 110 104 99 94 114 60 110 108 104 105 105 102 97 92 109 50 111 109 104 104 103 100 96 92 108 40 114 113 106 102 102 99 95 91 107

Outlet Sound Power, L

, L

A and outlet

20 BIDW

Wheel Diameter = 20 in.

Outlet Area = 4.14 ft.

Tip Speed = 5.24 x RPM

Maximum BHP = (RPM/832)

Minimum Starting HP = 3⁄4

Maximum RPM Class I = 1960

Maximum RPM Class II = 2554

Maximum RPM Class III = 3219

CFM OV

3000 724 489 0.20 596 0.34 699 0.52

3800 917 561 0.31 654 0.47 736 0.65 823 0.87 900 1.11 977 1.37

4600 1111 639 0.45 723 0.65 797 0.85 865 1.07 936 1.31 1005 1.59 1069 1.87 1132 2.17

5400 1304 720 0.65 796 0.87 864 1.11 927 1.35 987 1.60 1042 1.85 1105 2.16 1165 2.48 1221 2.81 1274 3.14

6200 1497 803 0.89 874 1.16 936 1.42 995 1.69 1050 1.96 1103 2.25 1154 2.54 1201 2.83 1257 3.19 1310 3.55

7000 1690 888 1.19 954 1.50 1012 1.80 1066 2.10 1119 2.40 1167 2.71 1215 3.03 1262 3.35 1306 3.67 1348 4.00

7800 1884 974 1.57 1035 1.92 1090 2.25 1142 2.58 1190 2.91 1237 3.25 1282 3.59 1324 3.94 1367 4.30 1409 4.66

8600 2077 1061 2.02 1119 2.41 1171 2.78 1219 3.14 1265 3.51 1309 3.87 1352 4.25 1393 4.62 1432 5.00 1471 5.39

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

7000 1690 1348 4.00 1444 4.80 1534 5.63 1619 6.49 1700 7.39 1786 8.38

7800 1884 1409 4.66 1486 5.39 1571 6.23 1655 7.15 1734 8.09 1809 9.05 1881 10.0 1959 11.1

8600 2077 1471 5.39 1547 6.18 1619 6.98 1692 7.85 1770 8.85 1845 9.86 1916 10.9 1984 12.0 2049 13.0 2119 14.2

9400 2270 1539 6.22 1610 7.06 1680 7.92 1746 8.80 1809 9.68 1881 10.7 1952 11.8 2020 12.9 2085 14.1 2148 15.2 10200 2463 1609 7.15 1677 8.05 1743 8.96 1808 9.89 1870 10.8 1929 11.8 1989 12.8 2056 14.0 2121 15.2 2184 16.4 11000 2657 1680 8.20 1747 9.15 1810 10.1 1871 11.1 1932 12.1 1990 13.1 2046 14.1 2100 15.2 2158 16.3 2220 17.6 11800 2850 1755 9.35 1818 10.4 1880 11.4 1938 12.4 1995 13.5 2052 14.6 2108 15.6 2161 16.7 2212 17.8 2262 19.0 12600 3043 1831 10.6 1892 11.7 1951 12.8 2008 13.9 2063 15.0 2116 16.1 2170 17.3 2223 18.4 2274 19.6 2323 20.7 13400 3236 1908 12.1 1967 13.2 2023 14.3 2079 15.5 2133 16.7 2185 17.8 2235 19.0 2285 20.2 2336 21.4 2384 22.7 14200 3429 1987 13.6 2044 14.8 2099 16.0 2152 17.2 2204 18.5 2255 19.7 2305 20.9 2352 22.2 2399 23.4 2447 24.7 15000 3623 2067 15.3 2122 16.6 2175 17.8 2227 19.1 2276 20.4 2326 21.7 2375 23.0 2422 24.3 2467 25.6 2512 27.0 15800 3816 2148 17.1 2201 18.5 2253 19.8 2303 21.2 2352 22.5 2398 23.9 2446 25.2 2492 26.6 2537 28.0 2581 29.4 16600 4009 2229 19.1 2281 20.5 2331 22.0 2380 23.4 2428 24.8 2474 26.2 2518 27.6 2564 29.0 2608 30.5 2651 31.9 17400 4202 2312 21.3 2362 22.8 2411 24.3 2458 25.8 2505 27.2 2550 28.7 2593 30.2 2636 31.7 2679 33.2 2722 34.7 18200 4396 2395 23.7 2444 25.2 2491 26.8 2538 28.3 2582 29.9 2626 31.4 2669 32.9 2711 34.5 2752 36.0 2793 37.6 19000 4500 2470 26.1 2526 27.8 2573 29.4 2618 31.0 2661 32.7 2704 34.3 2746 35.9 2787 37.5 2827 39.1 2867 40.7

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

9000 2173 2130 14.7 2195 15.9 2262 17.1

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

BIDW-20

Static Pressure (Pa x 100)

Class Max RPM

I 1960

II 2554

III 3219

7½

Static Pressure (in. wg)

1½

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28

800

1400

1100

1700

1960

50% WOV

60% WOV

70% WOV

3219

3000

2800

2554

2300

RPM BHP % WOV Density 0.075 lb/ft Density 1.2 kg/m

Volume (cfm x 1000)

0 5 10 15 20 25 30 35 40 45

Volume (m /hr x 1000)

80% WOV

90% WOV

20 BIDW

% WOV = (CFM X 100) / (RPM X 8.58)

Sound Power [dB Ref 10

RPM %WOV 1 2 3 4 5 6 7 8 L

550 100 78 75 74 78 68 62 56 52 76

80 76 73 71 75 67 60 54 50 74 60 75 70 70 76 67 60 54 50 74 50 75 69 69 76 67 60 54 50 75 40 74 69 69 77 67 60 54 50 75

800 100 79 91 83 82 76 72 64 60 83

80 80 89 81 78 72 67 59 54 80 60 77 83 76 77 71 67 59 54 77 50 76 80 74 76 71 67 60 55 77

1100 100 85 92 91 89 85 81 74 70 90

1600 100 91 94 98 95 92 89 83 78 97

2200 100 98 100 103 105 98 96 91 88 105

3219 100 105 109 110 114 110 106 102 98 115

The sound power level ratings shown are in decibels, referred to 10

ratings shown have been calculated per AMCA International Standard 301.

40 77 78 74 76 71 67 60 55 77

80 84 88 88 87 81 77 69 65 87 60 83 84 83 83 79 76 70 65 85 50 80 83 82 83 79 76 70 66 84 40 80 83 82 83 78 75 70 66 84

80 88 91 96 93 90 86 80 75 95 60 87 88 93 89 86 83 78 75 92 50 87 88 91 88 85 82 78 75 91 40 89 88 90 87 85 82 78 76 90

80 95 97 100 103 96 92 87 84 102 60 92 93 98 99 93 91 87 84 100 50 93 93 98 97 93 90 87 84 99 40 95 95 98 98 92 90 88 86 99

80 103 106 107 111 107 102 98 94 112 60 100 102 105 107 104 101 97 94 109 50 101 103 105 105 103 100 97 94 108 40 103 105 106 106 103 99 98 96 108

, L

A sound power levels for Installation Type B: free inlet, ducted outlet. Outlet ratings include the effects of duct end correction. The A-weighted sound

Inlet Sound Power, L

RPM %WOV 1 2 3 4 5 6 7 8 L

-12

watts calculated per AMCA Standard 301. Values shown are for inlet L

550 100 90 78 75 68 67 59 52 47 73

800 100 93 96 83 77 77 71 63 57 84

1100 100 99 93 90 86 86 80 74 67 90

1600 100 105 98 98 94 93 89 85 77 98

2200 100 109 105 106 109 102 97 93 88 109

3219 100 117 115 113 118 114 108 104 99 118

-12

watts]

Outlet Sound Power, L

80 90 77 71 64 64 54 47 45 70 60 83 74 68 63 62 54 48 45 67 50 82 73 67 63 63 54 48 45 67 40 82 73 67 63 63 54 48 46 67

80 90 92 81 73 72 64 57 52 80 60 87 84 76 72 69 63 57 53 75 50 87 82 74 72 68 62 57 54 74 40 89 83 73 71 68 62 57 54 74

80 96 92 88 83 81 74 67 61 86 60 91 87 83 78 77 71 66 61 82 50 91 86 82 77 76 71 66 62 81 40 92 86 81 76 75 70 66 62 80

80 102 95 96 91 92 87 81 73 96 60 100 91 93 87 87 83 77 72 92

50 100 92 92 86 86 81 76 72 91 40 100 93 92 85 84 81 76 72 90

80 107 101 101 105 98 93 89 83 105 60 103 97 96 99 96 91 86 81 100 50 104 98 95 97 94 89 85 81 99 40 107 100 95 95 92 89 85 81 98

80 115 112 109 113 110 104 100 94 114 60 111 108 105 107 106 102 97 92 110 50 112 109 104 105 104 100 96 92 108 40 116 112 106 103 102 99 95 92 107

, L

A and outlet

22 BIDW

Wheel Diameter = 221⁄4 in.

Outlet Area = 5.12 ft.

Tip Speed = 5.83 x RPM

Maximum BHP = (RPM/696)

Minimum Starting HP = 1

Maximum RPM Class I = 1761

Maximum RPM Class II = 2294

Maximum RPM Class III = 2892

CFM OV

4000 781 457 0.28 548 0.46 638 0.69 719 0.95

4800 937 511 0.39 593 0.60 666 0.83 743 1.10 812 1.39 880 1.72

5600 1093 568 0.54 643 0.78 711 1.03 773 1.29 838 1.60 900 1.93 958 2.28 1017 2.66

6400 1250 626 0.72 696 1.00 759 1.27 817 1.56 871 1.86 927 2.19 984 2.57 1038 2.95 1088 3.35 1138 3.77

7200 1406 686 0.95 752 1.26 810 1.56 864 1.88 916 2.20 965 2.54 1011 2.88 1064 3.29 1114 3.71 1162 4.15

8000 1562 747 1.22 809 1.56 864 1.90 915 2.25 963 2.60 1010 2.96 1055 3.33 1097 3.70 1141 4.11 1188 4.57

8800 1718 809 1.54 867 1.92 919 2.30 968 2.67 1014 3.05 1058 3.44 1100 3.84 1142 4.24 1181 4.65 1219 5.06

9600 1875 871 1.91 927 2.34 976 2.75 1022 3.16 1066 3.57 1108 3.98 1148 4.41 1187 4.84 1226 5.27 1263 5.72 10400 2031 934 2.35 987 2.82 1034 3.27 1078 3.71 1120 4.15 1160 4.60 1199 5.05 1236 5.50 1272 5.96 1308 6.44 11200 2187 998 2.86 1048 3.36 1093 3.85 1136 4.33 1176 4.80 1214 5.28 1251 5.76 1287 6.25 1322 6.74 1356 7.23 12000 2343 1062 3.44 1109 3.97 1153 4.51 1194 5.02 1232 5.53 1269 6.04 1305 6.55 1339 7.06 1373 7.59 1406 8.11 12800 2500 1127 4.10 1171 4.66 1214 5.24 1253 5.79 1290 6.34 1325 6.88 1360 7.42 1393 7.97 1425 8.52 1457 9.07 13600 2656 1193 4.85 1234 5.44 1274 6.05 1312 6.65 1348 7.23 1383 7.81 1416 8.39 1448 8.96 1479 9.54 1509 10.1 14400 2812 1258 5.68 1297 6.30 1336 6.94 1373 7.59 1407 8.21 1441 8.82 1472 9.44 1504 10.1 1534 10.7 1563 11.3 15200 2968 1324 6.61 1360 7.25 1398 7.93 1433 8.61 1467 9.29 1499 9.93 1530 10.6 1560 11.2 1590 11.9 1618 12.5 16000 3125 1390 7.63 1424 8.31 1460 9.02 1494 9.74 1527 10.5 1559 11.1 1589 11.8 1618 12.5 1646 13.2 1674 13.9

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

CFM OV

9000 1757 1230 5.22 1309 6.16 1390 7.22 1466 8.30 1537 9.42 1610 10.6 1683 11.9

9800 1914 1274 5.89 1344 6.80 1417 7.83 1492 8.97 1563 10.1 1630 11.3 1694 12.6 1762 13.9 1829 15.3 10600 2070 1320 6.63 1388 7.60 1453 8.59 1519 9.68 1590 10.9 1657 12.2 1720 13.4 1782 14.8 1840 16.1 1904 17.5 11400 2226 1368 7.44 1434 8.47 1497 9.52 1557 10.6 1616 11.7 1683 13.0 1747 14.4 1808 15.7 1866 17.1 1923 18.5 12200 2382 1419 8.34 1481 9.42 1542 10.5 1601 11.7 1657 12.8 1711 13.9 1773 15.3 1834 16.7 1893 18.2 1949 19.7 13000 2539 1470 9.33 1531 10.5 1588 11.6 1646 12.8 1702 14.0 1754 15.2 1805 16.4 1861 17.8 1919 19.3 1975 20.8 13800 2695 1522 10.4 1582 11.6 1638 12.8 1692 14.0 1747 15.3 1799 16.6 1849 17.8 1898 19.1 1946 20.5 2002 22.1 14600 2851 1577 11.6 1634 12.8 1689 14.1 1742 15.4 1793 16.7 1844 18.0 1894 19.3 1942 20.7 1988 22.1 2033 23.4 15400 3007 1632 12.8 1687 14.2 1741 15.5 1793 16.8 1842 81.2 1890 19.5 1939 21.0 1987 22.4 2033 23.8 2077 25.2 16200 3164 1688 14.2 1742 15.6 1793 17.0 1844 18.4 1893 19.8 1940 21.2 1985 22.7 2032 24.1 2078 25.6 2122 27.1 17000 3320 1745 15.7 1797 17.1 1847 18.6 1896 20.0 1944 21.5 1990 23.0 2035 24.5 2079 26.0 2123 27.6 2167 29.1 17800 3476 1802 17.3 1853 18.8 1902 20.3 1949 21.8 1996 23.4 2042 24.9 2086 26.5 2129 28.0 2170 29.6 2212 31.2 18600 3632 1861 19.0 1910 20.6 1958 22.2 2004 23.7 2048 25.3 2093 26.9 2137 28.6 2179 30.2 2220 31.8 2260 33.5 19400 3789 1919 20.8 1967 22.5 2014 24.1 2059 25.8 2103 27.4 2146 29.1 2189 30.8 2230 32.5 2271 34.2 2310 35.9 20200 3945 1978 22.8 2025 24.5 2071 26.3 2115 28.0 2158 29.7 2200 13.4 2241 33.1 2282 34.9 2322 36.6 2361 38.4 21000 4101 2038 24.9 2084 26.7 2128 28.5 2172 30.3 2214 32.0 2255 33.8 2294 35.6 2334 37.4 2373 39.2 2412 41.1

2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

CFM OV

11000 2148 1910 18.0 1971 19.5 2031 21.0

12100 2363 1946 19.5 2000 21.0 2053 22.5 2104 24.0 2160 25.7 13200 2578 1982 21.1 2036 22.7 2089 24.3 2140 25.9 2189 27.5 2285 30.8 2386 34.4 14300 2792 2019 22.8 2073 24.5 2125 26.1 2176 27.8 2225 29.5 2320 33.0 2411 36.5 2498 40.1 2593 44.1 15400 3007 2077 25.2 2120 26.7 2162 28.1 2213 29.9 2262 31.7 2356 35.3 2447 38.9 2533 42.7 2616 46.5 2698 50.5 16500 3222 2138 27.8 2181 29.4 2223 30.9 2263 32.5 2302 34.0 2393 37.7 2483 41.5 2569 45.4 2652 49.4 2732 53.4 17600 3437 2201 30.7 2243 32.3 2284 33.9 2324 35.5 2363 37.2 2438 40.5 2520 44.2 2606 48.3 2688 52.4 2768 56.6 18700 3652 2266 33.8 2306 35.4 2346 37.1 2386 38.8 2424 40.6 2499 44.0 2570 47.5 2643 51.2 2725 55.5 2804 59.9 19800 3867 2335 37.1 2373 38.9 2411 40.6 2449 42.4 2487 44.2 2560 47.8 2631 51.5 2700 55.2 2765 58.9 2841 63.3 20900 4082 2405 40.7 2443 24.5 2480 44.4 2516 46.2 2551 48.1 2623 51.9 2693 55.7 2761 59.6 2826 63.5 2889 67.4 22000 4296 2476 44.6 2513 46.5 2550 48.4 2585 50.4 2620 52.3 2687 56.2 2755 60.2 2822 64.2 2887 68.3 23100 4511 2548 48.8 2585 50.8 2620 52.8 2655 54.8 2689 56.8 2756 60.8 2820 64.9 2885 69.1 24200 4726 2623 53.2 2657 55.3 2692 57.4 2726 59.5 2760 61.6 2825 65.8 2888 70.1 25300 4941 2699 58.0 2733 60.2 2765 62.3 2798 64.5 2831 66.7 26400 5156 2776 63.2 2809 65.4 2841 67.6 2873 69.9 27500 5371 2853 68.6 2885 70.9

7.00 7.50 8.00 8.50 9.00 10.00 11.00 12.00 13.00 14.00

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

STATIC PRESSURE (in. wg)

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