ACCA Welcomes Comment on Manual D Revisions
The Manual D procedures match duct system resistance (pressure drop) to blower performance (as defined by the HVAC system manufacturer’s blower performance tables). This delivers appropriate airflow to the rooms and spaces to be conditioned while ensuring that system airflow is compatible with the operating range of the HVAC equipment.
United States Al Iskandariyah David Bixby Kate Wessels International Code Council Residential International Association Of Plumbing
Source: achrnews.com