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

Author Question: What controls the firing of a water boiler? A) The auxiliary switch on the zone valve B) An ... (Read 35 times)

vinney12

  • Hero Member
  • *****
  • Posts: 586
on: Jul 24, 2018
What controls the firing of a water boiler?
 
  A) The auxiliary switch on the zone valve
  B) An aquastat that senses the temperature of the water in the boiler
  C) The boiler water temperature is normally maintained by the high limit and the low water cutout.
  D) A wall thermostat that senses the temperature of the house

Question 2

How can debris be flushed from a newly installed ground loop?
 
  A) By running water through the loop after connecting it to the system.
  B) By temporarily connecting the purge unit.
  C) By adding low-toxicity antifreeze to the system.
  D) By running water through the loop before connecting it to the system.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

D


vinney12

  • Hero Member
  • *****
  • Posts: 586
Reply #2 on: Jul 24, 2018
Thanks


shewald78

  • Sr. Member
  • ****
  • Posts: 340
Reply #3 on: Jul 24, 2018
Welcome :)


« previous next »
 

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Water-conducting cells of the xylem. Water-conducting cells of the xylem.
water molecules water molecules
Water cabbage Water cabbage
water movement water movement
The Best Way to Meet Your Daily Water Needs The Best Way to Meet Your Daily Water Needs
Differential Heating of Land and Water Differential Heating of Land and Water
Video: Protein Secondary and Tertiary Structures - Animation

For a complete list of videos, visit our video library