This topic contains a solution. Click here to go to the answer

Author Question: When pressurizing a system for leak testing, the only refrigerant that can be used as a trace gas is ... (Read 83 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
When pressurizing a system for leak testing, the only refrigerant that can be used as a trace gas is _____.
 
  a. HFC-410A
  b. HFC-134a
  c. HFC-407C
  d. HCFC-22

Question 2

In which of these situations is it necessary to use outdoor air for combustion on an induced-draft furnace?
 
  a. It is always necessary.
  b. In locations where the outdoor temperature does not fall below 32F.
  c. When the furnace is within 50' of a living space.
  d. When there are chemicals near the furnace



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

zenzy

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

d

Answer to Question 2

d




Capo

  • Member
  • Posts: 545
Reply 2 on: Jul 24, 2018
Excellent


mcabuhat

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

For a complete list of videos, visit our video library