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

Author Question: How is a concentric vent used in a high-efficiency furnace? A) It creates two close exit points ... (Read 61 times)

drink

  • Hero Member
  • *****
  • Posts: 554
on: Jul 24, 2018
How is a concentric vent used in a high-efficiency furnace?
 
  A) It creates two close exit points for the vent pipe and combustion air pipe.
  B) It allows a single outdoor exit point for the vent and combustion air pipe.
  C) It allows the vent pipe to combine with condensate drainage.
  D) It directs the combustion air pipe to an outdoor exit.

Question 2

Which of these technologies is NOT used in 80 percent furnaces?
 
  A) Adding induced draft combustion blowers B) Flattening and serpentining heat exchangers
  C) Adding a condensing recuperative coil D) Removing standing pilot lights


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

C


drink

  • Hero Member
  • *****
  • Posts: 554
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

On the slopes of Chimborazo, a 6,310 m high volcanic peak in the Andes Mountains of Ecuador, Alexand On the slopes of Chimborazo, a 6,310 m high volcanic peak in the Andes Mountains of Ecuador, Alexand
Crossing over creates heteroduplex DNA Crossing over creates heteroduplex DNA
The primary pulse points of the body. The primary pulse points of the body.
A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher. A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher.
How to find the slope of a line using any two points How to find the slope of a line using any two points
Graph the function by hand & label key points on graph: Graph the function by hand & label key points on graph:
Video: Red alga life cycle Animation

For a complete list of videos, visit our video library