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Author Question: Why are the dampers on registers normally not used for balancing the system airflow? What will be ... (Read 16 times)

Mollykgkg

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on: Jul 26, 2018
Why are the dampers on registers normally not used for balancing the system airflow?
 
  What will be an ideal response?

Question 2

Why is it important to fill the brazed copper joint completley when R410A refrigerants are used?
 
  What will be an ideal response?


tennis14576

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

If supply registers are used as balancing dampers they will produce excessive noise in the space.

Answer to Question 2

These higher-pressure refrigerants will cause the copper pipe to expand slightly as the pressure inside the pipe increases. As the pressure decreases, the pipe contracts. This cyclical expansion can cause a stress fracture if the joint is not completely filled with brazed metal.


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