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 15 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?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

A theoretical photosynthetic response curve. A theoretical photosynthetic response curve.
Frequency distribution curve: interpatient variability in drug response Frequency distribution curve: interpatient variability in drug response
Turn the outlet valve of the canister to the OFF or CLOSED position. Turn the outlet valve of the canister to the OFF or CLOSED position.
Turn head for access to suboccipital muscles and locate TrPs. Use fingers or thumb to apply pressure ... Turn head for access to suboccipital muscles and locate TrPs. Use fingers or thumb to apply pressure ...
Acquisition and Extinction of a Salivary Response Acquisition and Extinction of a Salivary Response
Hypersensitive Response Hypersensitive Response
Video: How proteins function? How do proteins work?

For a complete list of videos, visit our video library