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

Author Question: The sequence of operation of a high-efficiency furnace is ________. A) the thermostat calls for ... (Read 79 times)

audragclark

  • Hero Member
  • *****
  • Posts: 579
on: Jul 26, 2018
The sequence of operation of a high-efficiency furnace is ________.
 
  A) the thermostat calls for heat, the pilot is established, the combustion fan turns on, the main burner comes on
  B) the thermostat calls for heat, the combustion fan turns on, the pilot is established, the main burner comes on
  C) the thermostat calls for heat, the pilot is established, the main burner comes on, the combustion fan turns on

Question 2

If the main heating coils of an electric furnace are not heating up, you should suspect that ________.
 
  A) the system has an open fuse, the contacts of the first sequencer are not closed, or the main heating element is open
  B) the fan switch contacts are not closed or the fan switch is faulty
  C) the coil of the fan relay is open or the fan relay contacts are faulty


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

iceage

  • Guest
Reply #1 on: Jul 26, 2018
Answer to Question 1

B

Answer to Question 2

A


audragclark

  • Member
  • Posts: 579
Reply 2 on: Jul 26, 2018
:D TYSM

CAPTAINAMERICA

  • Member
  • Posts: 325
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Relationships among the coding sequence of a gene, the codon sequence of an mRNA, the anticodons of Relationships among the coding sequence of a gene, the codon sequence of an mRNA, the anticodons of
Rotating Furnace for Making Parabolic Telescope Mirrors Rotating Furnace for Making Parabolic Telescope Mirrors
Cloud Types: High Clouds Cloud Types: High Clouds
Eggs are an excellent source of protein, but egg yolks are high in cholesterol Eggs are an excellent source of protein, but egg yolks are high in cholesterol
Typical sequence of tooth eruption for both deciduous and permanent teeth Typical sequence of tooth eruption for both deciduous and permanent teeth
Suggested sequence for palpating lymph nodes Suggested sequence for palpating lymph nodes
Video: Uterine (menstrual) cycle - phases

For a complete list of videos, visit our video library