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

Author Question: List the operational sequence for the second stage of Figure 39-34. Just list what happens when the ... (Read 112 times)

washai

  • Hero Member
  • *****
  • Posts: 523
on: Jul 26, 2018
List the operational sequence for the second stage of Figure 39-34. Just list what happens when the W2 terminal is energized.
 
  What will be an ideal response?

Question 2

What is the heating value of grade 2 fuel oil?
 
  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

nickk12214

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 26, 2018
Answer to Question 1

The second stage heating thermostat TSH2 closes to send 24 volts from R to W2, energizing heat sequencer HS1, line 18. The HS1 coil is a small heater that warps a bimetal disk to close the contacts after a time delay of 30 seconds. HS1 has two sets of normally open contacts that close after a time delay to prevent the strips from energizing immediately at startup when the compressor and fan motors are drawing high starting amps. The HS1 normally open contacts close, energizing the first heater HTR1and

the coil to the second heat sequencer HS2, lines 1 and 2. HS2 closes its contacts after a time delay to energize the second heater HTR2, line 3. Note that HS1 and HS2 normally open contacts in parallel with the IFR contacts, lines 10 and 12. They insure that the indoor fan motor will operate whenever the heat strips are operating.

Answer to Question 2

137,000 - 141,800


washai

  • Member
  • Posts: 523
Reply 2 on: Jul 26, 2018
YES! Correct, THANKS for helping me on my review

Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

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?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Larynx, trachea, bronchi, and lungs with an expanded view showing the structures of an alveolus and Larynx, trachea, bronchi, and lungs with an expanded view showing the structures of an alveolus and
Primates exhibit prolonged life histories, spending more time in each stage of life than most other Primates exhibit prolonged life histories, spending more time in each stage of life than most other
C. Wright Mills (1916-1962) was a controversial figure in sociology because of his analysis of the ... C. Wright Mills (1916-1962) was a controversial figure in sociology because of his analysis of the ...
Example of Tabular List organization levels and formatting. Example of Tabular List organization levels and formatting.
Cladogram Based On DNA Sequence Cladogram Based On DNA Sequence
Origin of replication sequence in E. coli Origin of replication sequence in E. coli
Video: Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library