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

Author Question: How does the cad cell operate to secure the burner in the event of a flame out? What will be an ... (Read 63 times)

captainjonesify

  • Hero Member
  • *****
  • Posts: 543
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
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
Thanks for the timely response, appreciate it


softEldritch

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Gracias!

 

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

For a complete list of videos, visit our video library