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 86 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
Wow, this really help

matt95

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

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 use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

From high cotransduction frequencies, close linkage is inferred From high cotransduction frequencies, close linkage is inferred
A very high-resolution texture of the planet Mars A very high-resolution texture of the planet Mars
Risks of infectious disease increase in (a) high-density agricultural populations compared to (b) lo Risks of infectious disease increase in (a) high-density agricultural populations compared to (b) lo
PCV valve operation in the event of a backfire. PCV valve operation in the event of a backfire.
Sequencing a large chromosome by individual sequence determination of cloned fragments in sequences Sequencing a large chromosome by individual sequence determination of cloned fragments in sequences
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library