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 87 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

elyse44

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr (a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr
Amino acid sequence of bovine insulin Amino acid sequence of bovine insulin
The coolant temperature is controlled by the thermostat, which opens and allows coolant to flow to ... The coolant temperature is controlled by the thermostat, which opens and allows coolant to flow to ...
Per capita consumption of power is high in the developed world and highest in the United States Per capita consumption of power is high in the developed world and highest in the United States
Effect of dietary fats on high- and low-density cholesterol levels Effect of dietary fats on high- and low-density cholesterol levels
BLAST results showing a 280-base sequence of a chromosome 12 contig from rats BLAST results showing a 280-base sequence of a chromosome 12 contig from rats
Video: Exercise and cardiac output

For a complete list of videos, visit our video library