Sizing the Zone Dampers - Verasys - LIT-12012331 - General System Information - Verasys System - 5.0

Verasys System Changeover Bypass Zoning System Design Application Note

Brand
Verasys
Product name
Verasys System
Document type
Application Note
Document number
LIT-12012331
Version
5.0
Revision date
2023-09-25
Language
English

Sizing the zone dampers depends on multiple factors in your zone. Refer to the guidelines in the American National Standards Institute (ANSI)/American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 62.1-2010, Ventilation for Acceptable Indoor Air Quality, for information about correctly sizing the zone dampers.

See the following tables for zone damper sizes based on airflow.

Table 1. Round Zone Damper Assemblies
Air Velocity through Damper (FPM) Damper Size, in. (Area - Sq. Ft)
6 (0.188) 8 (0.338) 10 (0.532) 12 (0.769) 14 (1.050) 16 (1.375)
  Airflow (cfm)

750 FPM - Zone

141

254

399

577

788

1,031

1000 FPM - Zone

188

338

532

769

1,050

1,375

1250 FPM - Zone

235

423

665

961

1,313

1,718

Table 2. Rectangular Zone Damper Assemblies
Air Velocity through Damper (FPM) Damper Size, W x H in. (Area - Sq. Ft)
8 x 12 (0.42) 8 x 14 (0.5) 8 x 16 (0.58) 10 x 16 (0.77) 10 x 20 (1.00) 14 x 18 (1.33)
  Airflow (cfm)

750 FPM - Zone

315

375

435

578

750

998

1000 FPM - Zone

420

500

580

770

1,000

1,330

1250 FPM - Zone

525

625

725

963

1,250

1,663