Question 1

Most residences with modern hydronic heating systems use ____________________ baseboard heat transfer for terminal heating units.

Accepted Answer

The answer of Most residences with modern hydronic heating systems...

Question 2

The high-limit control, like the ____________________, is a device that opens and closes its contacts in response to boiler water temperature .

Accepted Answer

The answer of The high-limit control, like the ____________________, is...

Question 3

A column of water 1 ft high exerts a pressure of ____.

Accepted Answer

A)   0.277 psig
B)   0.299 psig
C)   0.433 psig
D)   14.696 psigE) A) and C)
F) B) and C)

Question 4

The more common type of expansion tank is the ____ expansion tank.

Accepted Answer

A)   compression
B)   standard
C)   restricted
D)   diaphragm-typeE) B) and C)
F) A) and B)

Question 5

Air in a hydronic system can cause ____.

Accepted Answer

A)   reduced water circulation
B)   increased water concentration
C)   corrosion
D)   Both a and c.E) A) and D)
F) B) and C)

Question 6

In hot water hydronic systems, water is heated and circulated through pipes to a heat transfer component called a(n) ____________________ unit .

Accepted Answer

The answer of In hot water hydronic systems, water is...

Question 7

The low-water ____________________ valve is responsible for deenergizing the hydronic system in the event the level of water in the system drops below the desired point .

Accepted Answer

The answer of The low-water ____________________ valve is responsible for...

Question 8

The reason for using zone valves on a hydronic heating system is to ____.

Accepted Answer

A)   allow different areas of the structure to maintain different temperatures
B)   reduce the chance of a water leak
C)   prevent unused parts of the house from getting warm, and wasting energy
D)   Both a and c.E) B) and D)
F) A) and C)

Question 9

A pressure relief valve is set at 30 psig. The valve is constantly opening and flooding the floor. What is causing the relief valve to constantly open?

Accepted Answer

A)   The water-regulating valve is broken.
B)   The system is overfiring.
C)   The system needs to be calibrated.
D)   The system requires a new boiler.E) None of the above
F) A) and D)

Question 10

It is important to note that the air separator does not remove air from the system .

Accepted Answer

A) True 
 B)False

Question 11

Explain how a centrifugal circulating pump creates flow in the hydronic system .

Accepted Answer

The centrifugal pump is responsible for ...

Question 12

A series loop hydronic system is not desirable for use in a large residence because ____.

Accepted Answer

A)   all of the heated water will flow to all rooms
B)   some rooms will overheat before other rooms are warm
C)   it is difficult to install and maintain
D)   Both a and b.E) None of the above
F) A) and D)

Question 13

Hydronic heating systems are systems in which water or ____________________ carries the heat through pipes to the areas to be heated .

Accepted Answer

steam

Question 14

Expansion tanks must always be bled from the top until all of the air is removed from it.

Accepted Answer

A) True 
 B)False

Question 15

The pressure relief valve ____.

Accepted Answer

A)   regulates the pressure of the water in the supply line
B)   is set to relieve the pressure in the boiler below its maximum design pressure
C)   shuts the boiler off if the water temperature gets too high
D)   relieves the pressure in the expansion tankE) A) and C)
F) A) and D) B

Question 16

Pumps generally have a cast-iron body with the impeller and other moving parts made of ____________________ or nonferrous metals .

Accepted Answer

The answer of Pumps generally have a cast-iron body with...

Question 17

An automatic air vent controls the airflow out of the system by means of a(n) ____________________, which rises and falls with the amount of air in the system.

Accepted Answer

The answer of An automatic air vent controls the airflow...

Question 18

The more sections a boiler has, the higher its capacity will be.

Accepted Answer

A) True 
 B)False

Question 19

The series loop system is the hydronic system that is found most often, primarily because of the  ____.

Accepted Answer

A)   heated water flows in the same direction in parallel pipes
B)   first terminal units being supplied will be warmer than the later ones
C)   possibility of having individual temperature control for each area being heated
D)   low installation costsE) None of the above
F) B) and D) D

Question 20

A tankless domestic water system provides hot water from a coil in the boiler.

Accepted Answer

A) True 
 B)False

Exam 33: Hydronic Heat

Most residences with modern hydronic heating systems use ____________________ baseboard heat transfer for terminal heating units.

Correct AnswerverifiedShow Answer

The high-limit control, like the ____________________, is a device that opens and closes its contacts in response to boiler water temperature .

Correct AnswerverifiedShow Answer

A column of water 1 ft high exerts a pressure of ____.

Correct AnswerverifiedShow Answer

The more common type of expansion tank is the ____ expansion tank.

Correct AnswerverifiedShow Answer

Air in a hydronic system can cause ____.

Correct AnswerverifiedShow Answer

In hot water hydronic systems, water is heated and circulated through pipes to a heat transfer component called a(n) ____________________ unit .

Correct AnswerverifiedShow Answer

The low-water ____________________ valve is responsible for deenergizing the hydronic system in the event the level of water in the system drops below the desired point .

Correct AnswerverifiedShow Answer

The reason for using zone valves on a hydronic heating system is to ____.

Correct AnswerverifiedShow Answer

A pressure relief valve is set at 30 psig. The valve is constantly opening and flooding the floor. What is causing the relief valve to constantly open?

Correct AnswerverifiedShow Answer

It is important to note that the air separator does not remove air from the system .

Correct AnswerverifiedShow Answer

Explain how a centrifugal circulating pump creates flow in the hydronic system .

Correct AnswerverifiedThe centrifugal pump is responsible for ...View AnswerShow Answer

A series loop hydronic system is not desirable for use in a large residence because ____.

Correct AnswerverifiedShow Answer

Hydronic heating systems are systems in which water or ____________________ carries the heat through pipes to the areas to be heated .

Correct Answerverifiedsteam

Expansion tanks must always be bled from the top until all of the air is removed from it.

Correct AnswerverifiedShow Answer

The pressure relief valve ____.

Correct AnswerverifiedB

Pumps generally have a cast-iron body with the impeller and other moving parts made of ____________________ or nonferrous metals .

Correct AnswerverifiedShow Answer

An automatic air vent controls the airflow out of the system by means of a(n) ____________________, which rises and falls with the amount of air in the system.

Correct AnswerverifiedShow Answer

The more sections a boiler has, the higher its capacity will be.

Correct AnswerverifiedShow Answer

The series loop system is the hydronic system that is found most often, primarily because of the ____.

Correct AnswerverifiedD

A tankless domestic water system provides hot water from a coil in the boiler.

Correct AnswerverifiedShow Answer

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The centrifugal pump is responsible for ...
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steam

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B

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D

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