Auto-zone-control-systems Zoning Design Guide (Version 01B) Manual de usuario descargar pdf (Pagina 19)

Auto-Zone Systems 19

Zoning Design Guide

can cause air flow problems. These slide-in dampers

require that the damper frame be inside the duct. Imag-

ine an 8 x 10 rectangular duct using a slide in damper

with a frame thickness of 1”. The frame alone would

reduce the opening to 6 x 8.

Another possible problem encountered with rectangu-

lar dampers is the blade width. Many damper manufac-

turers supply dampers with 6” or 8” dampers blades.

This can become a major problem, for example, if the

Rectangular Dampers

Auto-Zone rectangular dampers are high quality alu-

minum construction with opposed/air foil designed

blades for superior control and have both blade and jamb

seals for tight shut off. The dampers are installed using

a mounting flange. The purpose for the flange mount-

ing is to allow as much unrestricted free space within

the duct as possible.

Many companies utilize slide-in type dampers which

Bypass & Slave Dampers Zone Dampers

Table 1-1: Round Damper Selection Data

Damper Round Duct Size

(Area Ft

)

6”

(0.188)

8”

(0.338)

10”

(0.532)

12”

(0.769)

14”

(1.050)

16”

(1.375)

CFM @ 1” Velocity Pressure

Air Flow Probe “K” Factor- For Pressure

Independent Applications Only

474 950 1417 2120 2908 3700

Velocity Through Zone Damper

FPM

Airflow Through Zone Damper - CFM

(∆P

inches W.C. With Air Damper Full Open)

750 - Zone

141

(0.03)

254

(0.02)

399

(0.01)

577

(0.02)

788

(0.01)

1031

(0.01)

1000 - Zone

188

(0.05)

338

(0.03)

532

(0.02)

769

(0.03)

1050

(0.02)

1375

(0.01)

1250 - Zone

235

(0.07)

423

(0.04)

665

(0.03)

961

(0.04)

1313

(0.03)

1718

(0.02)

1500 - Zone

282

(0.09)

507

(0.06)

798

(0.04)

1154

(0.05)

1575

0.04)

2062

(0.03)

1750 – Bypass Only

329

(0.12)

592

(0.08)

931

(0.06)

1346

(0.06)

1838

(0.05)

2405

(0.04)

2000 – Bypass Only

376

(0.15)

676

(0.10)

1064

(0.07)

1538

(0.07)

2100

(0.07)

2749

(0.05)

2250 – Bypass Only

423

(0.18)

761

(0.13)

1197

(0.09)

1730

(0.09)

2363

(0.08)

3094

(0.06)

WattMaster reserves the right to change specifications without notice

1/2" Foil Faced

Insulation

Actuator

Round Damper

Blade Assembly

Control Enclosure

(Cover Removed)

FLOW

AIRF

Bypass & Slave Interface

1/2" Foil Faced

Insulation

Actuator

Zone Controller

Round Damper

Blade Assembly

Control Enclosure

(Cover Removed)

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 27 28

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Auto-zone-control-systems Zoning Design Guide (Version 01B) Manual de usuario Pagina 19

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