Technical standards and manuals developed by SMACNA members have worldwide acceptance by the construction and code community, as well as local and national government agencies.
Fiberglass produced on rotary equipment, with a less consistent distribution of fibers, is better suited for thicker insulation; whereas fiberglass produced from the flame-attenuated pot and marble method is more consistent.
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.
The more we can analyze potential problems with equipment used in different types of system designs, the better we can assist our clients in design reviews
There are many design aspects that are evaluated early in project development to help foresee potential problems that may arise during test & balance (TAB).
Daba, who moved to Canada 20 years ago as a refugee, did not initially have experience working with ductwork, but earned his Certified Ventilation Inspector (CVI) accreditation from NADCA in 2023.
You perform maintenance each year, but by the next maintenance visit, dirt and grime are in the equipment again. Have you ever wondered why this happens?