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Author Question: When will a preheater turn on? What will be an ideal response? ... (Read 8 times)

hubes95

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on: Jul 26, 2018
When will a preheater turn on?
 
  What will be an ideal response?

Question 2

What acts as the primary control for all HVACR functions in a DDC system?
 
  What will be an ideal response?


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meltdown117

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

The preheater will turn on when the incoming air drops below a pre-set temperature. This should be well above the freezing temperature of the coil that may vary from system to system depending on the amount of glycol added to the chill water loop.

Answer to Question 2

A computer.


hubes95

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Reply #2 on: Jul 26, 2018
Thank you!


meltdown117

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Reply #3 on: Jul 26, 2018
Always glad to help...


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