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 142 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
Wow, this really help

jojobee318

  • Member
  • Posts: 298
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Hillig and Mahlberg's analysis of secondary metabolites in the genus Cannabis Hillig and Mahlberg's analysis of secondary metabolites in the genus Cannabis
The Secondary Mirror Does Not Create a Hole in the Image The Secondary Mirror Does Not Create a Hole in the Image
Primary factors affecting blood pressure Primary factors affecting blood pressure
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ... Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ... Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
Primary growth in a shoot Primary growth in a shoot
Video: Carbohydrate digestion - mouth and stomach & pancreas and small intestine

For a complete list of videos, visit our video library