This topic contains a solution. Click here to go to the answer

Author Question: In Figure 39-34, what is the difference between emergency heat operation and normal second stage ... (Read 36 times)

nevelica

  • Hero Member
  • *****
  • Posts: 563
In Figure 39-34, what is the difference between emergency heat operation and normal second stage heat operation?
 
  What will be an ideal response?

Question 2

List the associations that establish national standards for the HVACR industry.
 
  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

dreamfighter72

  • Sr. Member
  • ****
  • Posts: 355
Answer to Question 1

The heat strips are the first stage heat in emergency heat and the compressor does not operate. When they are the second stage in normal operation, they are energized in addition to the compressor.

Answer to Question 2

ARI - Air Conditioning and Refrigeration Institute
ASHRAE American Society of Heating Refrigeration and Air Conditioning
Engineers
ASME - American Society of Mechanical Engineers
UL - Underwriters Laboratories
NFPA - National Fire Protection Association




nevelica

  • Member
  • Posts: 563
Reply 2 on: Jul 26, 2018
YES! Correct, THANKS for helping me on my review


  • Member
  • Posts:
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

For a complete list of videos, visit our video library