Auto-zone-control-systems Zoning Design Guide (Version 01B) Instrukcja Użytkownika Pobierz pdf (Strona 20)

20 Auto-Zone Systems

Zoning Design Guide

Zoning Design Procedures

damper has a height of 10”. In this case the damper

would utilize an 8” blade and a 2” blade stop or dam

would be installed across the base of the damper. Tak-

ing into consideration the “blade stop” and the frame, a

10 x 10 damper would have a reduced opening of 6 x 8

inside the duct. Many contractors have experienced low

air flow problems on projects only to discover this hid-

den problem of the dampers actually creating the re-

striction. Auto-Zone utilizes a variety of blade widths

in order to accommodate the size of the damper instead

of the damper trying to accommodate the size of the

blade.

Rectangular Dampers

Table 1-2: Rectangular Damper Selection Data

Damper

Height

“B”

8” 10” 12” 14” 16” 18” 20” 22” 24” 26” 28” 30” 32” 34” 36”

Damper

Width

“A”

Airflow Data with Full Open Damper – CFM @ 1000 FPM Velocity

(∆P

- inches W.C. @ 1000 FPM Velocity)

For airflow CFM at other velocities use these multipliers: 750 FPM = 0.75, 1250 FPM = 1.25, 1500 FPM = 1.5, 2000 = 2.0, 2250 = 2.25

8” 410

(0.16)

530

(0.10)

640

(0.07)

740

(0.05)

850

(0.04)

970

(0.03)

1080

(0.03)

1190

(0.02)

1300

(0.02)

1410

(0.02)

1520

(0.01)

1630

(0.02)

1740

(0.01)

1850

(0.01)

1970

(0.01)

10” 510

(0.10)

590

(0.07)

690

(0.05)

800

(0.03)

910

(0.03)

1030

(0.02)

1150

(0.02)

1260

(0.01)

1380

(0.01)

1500

(0.01)

1610

(0.01)

1730

(0.01)

1840

(0.01)

2000

(0.01)

2080

(0.01)

12” 560

(0.07)

650

(0.05)

730

(0.03)

850

(0.02)

970

(0.02)

1090

(0.01)

1210

(0.01)

1330

(0.01)

1460

(0.01)

1580

(0.01)

1700

(0.01)

1820

(0.01)

1940

(-)

2060

(-)

2190

(-)

14” 660

(0.05)

770

(0.03)

880

(0.02)

1030

(0.02)

1180

(0.01)

1330

(0.01)

1480

(0.01)

1630

(0.01)

1760

(0.01)

1910

(0.01)

2060

(-)

2210

(-)

2360

(-)

2510

(-)

2640

(-)

16” 750

(0.04)

890

(0.03)

1030

(0.02)

1200

(0.01)

1370

(0.01)

1540

(0.01)

1710

(0.01)

1880

(0.01)

2060

(-)

2230

(-)

2400

(-)

2570

(-)

2740

(-)

2910

(-)

3090

(-)

18” 770

(0.03)

980

(0.03)

1180

(0.01)

1380

(0.01)

1580

(0.01)

1780

(0.01)

1980

(0.01)

2180

(-)

2350

(-)

2550

(-)

2750

(-)

2950

(-)

3150

(-)

3350

(-)

3540

(-)

20” 850

(0.03)

1090

(0.02)

1330

(0.01)

1550

(0.01)

1770

(0.01)

1990

(0.01)

2210

(-)

2430

(-)

2650

(-)

2870

(-)

3090

(-)

3310

(-)

3530

(-)

3750

(-)

3990

(-)

22” 930

(0.02)

1210

(0.01)

1480

(0.01)

1730

(0.01)

1980

(0.01)

2230

(-)

2480

(-)

2730

(-)

2950

(-)

3200

(-)

3450

(-)

3700

(-)

3950

(-)

4200

(-)

4440

(-)

24” 950

(0.02)

1290

(0.01)

1630

(0.01)

1900

(0.01)

2170

(-)

2440

(-)

2710

(-)

2980

(-)

3250

(-)

3520

(-)

3790

(-)

4060

(-)

4330

(-)

4600

(-)

4880

(-)

26” 990

(0.02)

1390

(0.01)

1780

(0.01)

2080

(0.01)

2380

(-)

2680

(-)

2980

(-)

3280

(-)

3550

(-)

3850

(-)

4150

(-)

4450

(-)

4750

(-)

NA NA

28” 1070

(0.01)

1500

(0.01)

1930

(0.01)

2250

(-)

2570

(-)

2890

(-)

3210

(-)

3530

(-)

3850

(-)

4170

(-)

4500

(-)

4820

(-)

NA NA NA

30” 1020

(0.01)

1550

(0.01)

2080

(0.01)

2430

(-)

2780

(-)

3130

(-)

3480

(-)

3830

(-)

4150

(-)

4500

(-)

4850

(-)

NA NA NA NA

32” 1090

(0.01)

1660

(0.01)

2230

(-)

2600

(-)

2970

(-)

3340

(-)

3710

(-)

4080

(-)

4450

(-)

4820

(-)

NA NA NA NA NA

34” 1150

(0.01)

1770

(0.01)

2380

(-)

2780

(-)

3180

(-)

3580

(-)

3980

(-)

4370

(-)

4750

(-)

NA NA NA NA NA NA

36” 1060

(0.01)

1790

(0.01)

2520

(-)

2670

(-)

3090

(-)

3510

(-)

3930

(-)

4350

(-)

5040

(-)

NA NA NA NA NA NA

WattMaster reserves the right to change specifications without notice

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