How do I install a volume damper in a spin-in collar before attaching the flex?

Insert the damper blade assembly and continuous spring-loaded pivot rods through the pre-drilled holes in the side of the spin-in collar pipe. Secure the exterior manual handle locking quadrant to the outside shaft, and check that the internal damper blade can rotate a full 90^\circ from fully open to fully closed without binding against the collar metal.

['Insert the damper blade assembly and continuous spring-loaded pivot rods through the pre-drilled holes in the side of the spin-in collar pipe. Secure the exterior manual handle locking quadrant to the outside shaft, and check that the internal damper blade can rotate a full 90^\\circ from fully open to fully closed without binding against the collar metal.']

Stop if

• Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

Steps

• Stop and verify the approved detail, manufacturer instructions, foreman direction, and project specs before touching it.
• Insert the damper blade assembly and continuous spring-loaded pivot rods through the pre-drilled holes in the side of the spin-in collar pipe. Secure the exterior manual handle...

More in Flex Duct, Boots, Collars & Grilles