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

Author Question: What is the difference between primary air and secondary air? A) Primary air is used for the main ... (Read 132 times)

lbcchick

  • Hero Member
  • *****
  • Posts: 550
on: Jul 24, 2018
What is the difference between primary air and secondary air?
 
  A) Primary air is used for the main burner and secondary air is used for the auxiliary burners.
  B) Primary air is mixed with the gas before ignition and secondary air is drawn in after ignition.
  C) Secondary air is only used if the primary air source is depleted.
  D) Primary air is used with natural gas and secondary air is used for LP gas.

Question 2

When an air handler has both a DX cooling coil and a hot water heating coil, which coil is located first in the airstream?
 
  A) The two coils are in different airstreams.
  B) The DX cooling coil
  C) The hot water heating coil
  D) The air does not travel over the hot water heating coil.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akemokai

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

C


lbcchick

  • Member
  • Posts: 550
Reply 2 on: Jul 24, 2018
YES! Correct, THANKS for helping me on my review

EAN94

  • Member
  • Posts: 307
Reply 3 on: Yesterday
Excellent

« previous next »
 

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?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

The difference between mieosis and mitoses The difference between mieosis and mitoses
Forms of primary adult glaucoma: (a) in chronic open-angle glaucoma, the anterior chamber angle rema Forms of primary adult glaucoma: (a) in chronic open-angle glaucoma, the anterior chamber angle rema
Table 6.1 illustrates the main regime types and their differences. It breaks the regimes into four Table 6.1 illustrates the main regime types and their differences. It breaks the regimes into four
Horizontal, sagittal, and coronal functional MRIs show areas of increased activity in the primary ... Horizontal, sagittal, and coronal functional MRIs show areas of increased activity in the primary ...
Graphs of Primary Trigonometric Ratios Graphs of Primary Trigonometric Ratios
Video: First Stage of Labor and Delivery Video

For a complete list of videos, visit our video library