Plumbing Inspection Section#2 Water Heaters Quiz#1

You should have finished Section 1 (Supply Plumbing) before starting this Section. This Study Session outlines the scope of plumbing inspection as set out in the Standards of Practice and includes some comments on the Standards. This section also includes an introduction to water heaters.

The estimated completion time is one hour.

Objectives
At the end of this study session, you should be able to:

• List the similarities between hot water boilers and domestic water heaters.
• List seven differences between the hot water boiler and water heaters.
• Describe in two sentences how water heaters resist corrosion.
• List the components of a hot water heater.
• Describe in two sentences the relationship between recovery rate and tank size for water heaters.
• Describe in three sentences the priority system used by electric elements in an electric hot water heater.

• Question 1

  Needs Grading

  	A water heater is termed a single pass appliance because:
  	Selected Answer: It always sees new water, there is no recirculation.  Correct Answer:   The water heater does not use a recirculating system; it sees the water only once. Response Feedback: [None Given]

• Question 2

  Needs Grading

  	How do the two methods of rating a water heater relate?
  	Selected Answer: The volume of the water heater tank and the size the burner are the two methods used to rate water heater.  The bigger of the burner means the faster recovering rate and thus can use smaller water heater tank.  Correct Answer:   A large burner means a high recovery rate which allows a smaller tank to be installed. Response Feedback: [None Given]

• Question 3

  Needs Grading

  	List four fuels commonly used to heat water residentially.
  	Selected Answer: 1. Oil fired water heater 2. Gas water heater 3. Electrical water heater 4. Floating tank water heater Correct Answer:   Gas, oil, electricity or propane Response Feedback: [None Given]

• Question 4

  Needs Grading

  	What are the two methods of rating a water heater?
  	Selected Answer: 1. Capacity (the volume of hot water it can keep on hand) 2. recovery rate (the size of the burner) Correct Answer:   1. The volume of water it can hold 2. The size of the burner Response Feedback: [None Given]

• Question 5

  Needs Grading

  	What is the approximate temperature rise in residential water heaters?
  	Selected Answer: 50F to 120F Correct Answer:   70 degrees Fahrenheit Response Feedback: [None Given]

• Question 6

  Needs Grading

  	What is the biggest impact of the single pass feature on a water heater?
  	Selected Answer: Water heater is constantly exposed to fresh water with lots of corrosion-causing oxygen.  Correct Answer:   It is constantly exposed to fresh water and so is more prone to corrosion than a boiler. Response Feedback: [None Given]

• Question 7

  Needs Grading

  	Where is the burner located on gas and oil fired water heaters?
  	Selected Answer: On the bottom of water heater Correct Answer:   The burner is at the bottom of the tank. Response Feedback: [None Given]

• Question 8

  Needs Grading

  	Which type of water heater has the fastest recovery rate?
  	Selected Answer: Oil-fired water heater Correct Answer:   An oil-fired water heater. Response Feedback: [None Given]

• Question 9

  Needs Grading

  	Which type of water heater has the slowest recovery rate?
  	Selected Answer: Electrical water heater Correct Answer:   An electric water heater. Response Feedback: [None Given]

• Question 10

  0 out of 0 points

  	What is the component which introduces cold water near the bottom of the tank?
  	Selected Answer:   the drip tube Answers: the drip tube the relief valve   the dip tube the baffle the vent Response Feedback: That's not correct

• Question 11

  0 out of 0 points

  	Which element has priority in an electric hot water tank?
  	Selected Answer:   Upper Answers:   Upper Lower Response Feedback: Good work

• Question 12

  0 out of 0 points

  	Which element typically works more in an electric hot water heater?
  	Selected Answer:   Lower Answers: Upper   Lower Response Feedback: Good work

• Question 13

  0 out of 0 points

  	Residential boilers typically have a lower pressure relief valve setting than water heaters.
  	Selected Answer:  True Answers:  True False Response Feedback: Good work

• Question 14

  0 out of 0 points

  	Residential boilers typically operate at a lower temperature than residential water heaters.
  	Selected Answer:  False Answers: True  False Response Feedback: Good work