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Author Question: List the agencies that promote duct standards and briefly describe what they cover. What will be ... (Read 17 times)

Ebrown

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on: Jul 26, 2018
List the agencies that promote duct standards and briefly describe what they cover.
 
  What will be an ideal response?

Question 2

Why are rounded tipped sheet metal screws used?
 
  What will be an ideal response?


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debra928

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Reply #1 on: Jul 26, 2018
Answer to Question 1

Underwriters Laboratories produces standards for manufactured duct and duct connections

National Fire Protection Association promotes standards for installation of heating and air conditioning systems. The NFPA is primarily interested in fire safety.

SMACNA publishes standards related to duct installation.

NAIMA publishes standards for the installation of fiber ductboard and fiberglass insulation.

Air Diffusion Council publishes standards for installing flexible duct.

ACCA publishes duct design manuals and a specification for quality installation.

Answer to Question 2

To protect against accidental stripping or shorting of wires within the electrical panel.


Ebrown

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Reply 2 on: Jul 26, 2018
Great answer, keep it coming :)

jackie

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Reply 3 on: Yesterday
Gracias!

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