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

Author Question: How does the cad cell operate to secure the burner in the event of a flame out? What will be an ... (Read 26 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
on: Jul 26, 2018
How does the cad cell operate to secure the burner in the event of a flame out?
 
  What will be an ideal response?

Question 2

How would a multistage thermostat operate for a heat pump system with supplemental electric heat?
 
  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

upturnedfurball

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 26, 2018
Answer to Question 1

The lack of a flame causes a high resistance in the cad cell which drops nearly all the voltage in its circuit, so the safety relay's contacts close and the safety heater starts producing heat. The safety heater acts upon the safety switch contacts which are opened by the expansion of a bimetallic element and the burner motor shuts down.

Answer to Question 2

For heat pumps the first stage brings on the heat pump and the next stage brings on the electric strips as needed.


captainjonesify

  • Member
  • Posts: 543
Reply 2 on: Jul 26, 2018
Gracias!

rachel

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The FDA recognizes 118 routes of administration.

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.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Local and long–distance cell communication in animals. Local and long–distance cell communication in animals.
inner life of cell inner life of cell
Plant Cell Plant Cell
Activity of a Hippocampal Border Cell Activity of a Hippocampal Border Cell
Interaction between a CD8+ T cell and its target. Interaction between a CD8+ T cell and its target.
Organization of plant cell walls Organization of plant cell walls
Video: Status Epilepticus

For a complete list of videos, visit our video library