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

Author Question: What size should the combustion air openings be for a room with an 80,000 BTU/hr input furnace and a ... (Read 216 times)

ashley

  • Hero Member
  • *****
  • Posts: 584
on: Jul 24, 2018
What size should the combustion air openings be for a room with an 80,000 BTU/hr input furnace and a 35,000 BTU/hr water heater if the openings are opening directly into a ventilated attic and a ventilated crawlspace?
 
  A) The size is irrelevant so long as there are combustion air vents.
  B) 115,000/1,000 = 115 sq in free area each
  C) 115,000/2,000 = 57.5 sq in free area each
  D) 115,000/4,000 = 28.75 sq in free area each

Question 2

What type of fan is used in most air-cooled condensing units?
 
  A) A draw-through propeller fan
  B) A blow-through centrifugal fan
  C) A draw-through centrifugal fan
  D) No fanmost condensing units are natural draft.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

A


ashley

  • Hero Member
  • *****
  • Posts: 584
Reply #2 on: Jul 24, 2018
Thank you!


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #3 on: Jul 24, 2018
Always glad to help...


« previous next »
 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Interaction web of factors that might influence locust population size. Interaction web of factors that might influence locust population size.
The mark-recapture technique is often used to estimate population size. The mark-recapture technique is often used to estimate population size.
Stellar Size and Spectra Stellar Size and Spectra
Roller lifter from a GM Duramax 6.6 liter V-8 diesel engine. Notice the size of this lifter compared ... Roller lifter from a GM Duramax 6.6 liter V-8 diesel engine. Notice the size of this lifter compared ...
Europe’s Size and Location Europe’s Size and Location
Guidelines for Safe Use of Thermo- Hydrotherapy Facilities: Whirlpool, Shower, Steam Room, and Sauna Guidelines for Safe Use of Thermo- Hydrotherapy Facilities: Whirlpool, Shower, Steam Room, and Sauna
Video: Corpus Callosum Animation

For a complete list of videos, visit our video library