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Author Question: Assume a single-zone constant-volume system with an economizer is installed. In the occupied mode, ... (Read 77 times)

123654777

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on: Jul 24, 2018
Assume a single-zone constant-volume system with an economizer is installed. In the occupied mode, when
  the thermostat calls for cooling, which of the following occurs?
 
  a. The supply air fan stops.
  b. The outdoor dampers move to fully closed.
  c. The economizer acts as the first stage of cooling, if conditions permit.
  d. The relief fan cycles on.

Question 2

The maximum safe concentration of carbon dioxide (CO2) in an occupied space is _____.
 
  a. 900 ppm
  b. 1,000 ppm
  c. 1,200 ppm
  d. 1,500 ppm


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Cnarkel

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Reply #1 on: Jul 24, 2018
Answer to Question 1

c

Answer to Question 2

b


123654777

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Reply #2 on: Jul 24, 2018
Thank you!


Cnarkel

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Reply #3 on: Jul 24, 2018
Always glad to help...


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