This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: When will a preheater turn on? What will be an ideal response? ... (Read 42 times)

hubes95

  • Hero Member
  • *****
  • Posts: 561
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?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meltdown117

  • Sr. Member
  • ****
  • Posts: 326
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

  • Hero Member
  • *****
  • Posts: 561
Reply #2 on: Jul 26, 2018
Thank you!


meltdown117

  • Sr. Member
  • ****
  • Posts: 326
Reply #3 on: Jul 26, 2018
Always glad to help...


« previous next »
 

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Turn off faucet Turn off faucet
Dose-Response Curves for Morphine Dose-Response Curves for Morphine
Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
Inflammatory response. Inflammatory response.
If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ... If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ...
Secondary response begins more rapidly after exposure to antigen, produces more antibodies, and ... Secondary response begins more rapidly after exposure to antigen, produces more antibodies, and ...
Video: Vasectomy

For a complete list of videos, visit our video library