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.
| 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 |
| 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 |