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

Author Question: What is the difference between a a 90 furnace with a sealed combustion system and a typical 90 ... (Read 90 times)

danielfitts88

  • Hero Member
  • *****
  • Posts: 535
on: Jul 26, 2018
What is the difference between a a 90 furnace with a sealed combustion system and a typical 90 furnace?
 
  A) sealed combustion units use household vented air for combustion.
  B) sealed combustion units may use PVC pipe for venting material.
  C) sealed combustion units do not produce any combustion products
  D) sealed combustion units require combustion air to be piped in from the outside.

Question 2

Larger welds are always stronger.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

coreycathey

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 26, 2018
Answer to Question 1

D

Answer to Question 2

FALSE


danielfitts88

  • Hero Member
  • *****
  • Posts: 535
Reply #2 on: Jul 26, 2018
Thank you!


coreycathey

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Jul 26, 2018
Always glad to help...


« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

An example of a homeostatic control system. An example of a homeostatic control system.
Patient with typical rheumatoid arthritis contractures. Patient with typical rheumatoid arthritis contractures.
Major glands of the human endocrine system Major glands of the human endocrine system
The urinary system. The urinary system.
Lymphatic system vessels and the flow of lymph. Lymphatic system vessels and the flow of lymph.
Respiratory system, Urinary and Nervous systems Respiratory system, Urinary and Nervous systems
Video: Biological organic compounds

For a complete list of videos, visit our video library