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

Author Question: In Figure 39-34, what is the difference between emergency heat operation and normal second stage ... (Read 20 times)

nevelica

  • Hero Member
  • *****
  • Posts: 563
on: Jul 26, 2018
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
Reply #1 on: Jul 26, 2018
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

tranoy

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

A normal pregnancy. A normal pregnancy.
Kaplan’s Three-Stage Model of Sexual Response Kaplan’s Three-Stage Model of Sexual Response
Demonstrate the Application of Triangular, Figure-Eight, and Tubular Bandages Demonstrate the Application of Triangular, Figure-Eight, and Tubular Bandages
For some Americans, religion is an “easy-going, makes-little-difference” matter, as expressed in ... For some Americans, religion is an “easy-going, makes-little-difference” matter, as expressed in ...
Heat Exchanger Block Diagram Feedforward Control Heat Exchanger Block Diagram Feedforward Control
Normal red blood cells (RBCs) are flexible and donut-shaped and move with ease through blood ... Normal red blood cells (RBCs) are flexible and donut-shaped and move with ease through blood ...
Video: Polymerase chain reaction PCR - Animation

For a complete list of videos, visit our video library