Airflow Control Devices

Verify:

air flow regulator specifications are appropriate to site conditions(e.g., duct size, type, shape, register type, duct static pressure)

presence and type of fire dampers and smoke control devices

Select appropriate air flow regulator or orifice for the opening and desired airflow that will not interfere with the operation of smoke and fire dampers

Securely fasten transition or adapter according to manufacturer specifications

Install flow control device in the proper orientation for the desired flow direction

Set adjustable devices to preliminary balancing position per the design specifications

Seal all connections with UL 181B or 181B-M listed materials (e.g., mastic, tape)

Verify installed air flow device will not interfere with proper operation of smoke and fire dampers