Question 1

What would happen if a hydronic system was installed without an expansion tank?

Accepted Answer

When water is heated, it expan...

Question 2

In a series loop, the water going through the last terminal unit will be the same temperature as the water through the first terminal unit.

Accepted Answer

A) True 
 B)False

Question 3

What is the purpose of a system pressure differential bypass valve?

Accepted Answer

On systems that use two-port zone valves...

Question 4

Explain the purpose of the pressure relief valve.

Accepted Answer

The American Society of Mechanical Engin...

Question 5

Why must the expansion tank always be located higher than the boiler?

Accepted Answer

To permit air in the...

Question 6

The only place a bleed valve is needed is on top of the boiler.

Accepted Answer

A) True 
 B)False

Question 7

An expansion joint is a device used to ____.

Accepted Answer

A)   prevent damage between boiler sections
B)   enlarge the expansion tank in the system
C)   allow for expansion and contraction of the loop piping with water temperature changes
D)   connect the manual vent into the systemE) B) and C)
F) None of the above

Question 8

On systems that use two-port zone valves, excessive pressure in the supply header may result when multiple zone valves ____________________.

Accepted Answer

The answer of On systems that use two-port zone valves,...

Question 9

Discuss the outdoor reset control.

Accepted Answer

The outdoor reset control is the device ...

Question 10

Zone control valves are controlled by ____________________.

Accepted Answer

The answer of Zone control valves are controlled by ____________________....

Question 11

Hydronic heat circulators are centrifugal pumps.

Accepted Answer

A) True 
 B)False

Question 12

Automatic air vents rely on an internal disc that swells when water is sensed.

Accepted Answer

A) True 
 B)False

Question 13

The vanes of the impellers used in circulating pumps in hot water heating systems are usually enclosed, and are referred to as ____________________ impellers .

Accepted Answer

The answer of The vanes of the impellers used in...

Question 14

A high-limit control on a hot water boiler is needed to ____.

Accepted Answer

A)   regulate the amount of water to each section of baseboard
B)   regulate the water in the supply line to the boiler
C)   balance the water flow rate in the piping system
D)   protect the boiler against excessive water temperaturesE) B) and C)
F) A) and D)

Question 15

The expansion tank provides a means of removing the air from the system as well as provides ____ .

Accepted Answer

A)   a space for excess water from the supply source
B)   water for the domestic hot water coil
C)   a space for the water expansion and contraction with water temperature changes
D)   All of the above.E) B) and C)
F) A) and B)

Exam 33: Hydronic Heat

What would happen if a hydronic system was installed without an expansion tank?

Correct Answer
verified
When water is heated, it expan...
View Answer

The vanes of the impellers used in circulating pumps in hot water heating systems are usually enclosed, and are referred to as ____________________ impellers .

Correct Answer
verified

An expansion joint is a device used to ____.

Correct Answer
verified

On systems that use two-port zone valves, excessive pressure in the supply header may result when multiple zone valves ____________________.

Correct Answer
verified

A high-limit control on a hot water boiler is needed to ____.

Correct Answer
verified

Zone control valves are controlled by ____________________.

Correct Answer
verified

Automatic air vents rely on an internal disc that swells when water is sensed.

Correct Answer
verified

Why must the expansion tank always be located higher than the boiler?

Correct Answer
verified
To permit air in the...
View Answer

The expansion tank provides a means of removing the air from the system as well as provides ____ .

Correct Answer
verified

Discuss the outdoor reset control.

Correct Answer
verified
The outdoor reset control is the device ...
View Answer

Explain the purpose of the pressure relief valve.

Correct Answer
verified
The American Society of Mechanical Engin...
View Answer

What is the purpose of a system pressure differential bypass valve?

Correct Answer
verified
On systems that use two-port zone valves...
View Answer

The only place a bleed valve is needed is on top of the boiler.

Correct Answer
verified

Hydronic heat circulators are centrifugal pumps.

Correct Answer
verified

In a series loop, the water going through the last terminal unit will be the same temperature as the water through the first terminal unit.

Correct Answer
verified

Exam 33: Hydronic Heat

What would happen if a hydronic system was installed without an expansion tank?

Correct AnswerverifiedWhen water is heated, it expan...View AnswerShow Answer

The vanes of the impellers used in circulating pumps in hot water heating systems are usually enclosed, and are referred to as ____________________ impellers .

Correct AnswerverifiedShow Answer

An expansion joint is a device used to ____.

Correct AnswerverifiedShow Answer

On systems that use two-port zone valves, excessive pressure in the supply header may result when multiple zone valves ____________________.

Correct AnswerverifiedShow Answer

A high-limit control on a hot water boiler is needed to ____.

Correct AnswerverifiedShow Answer

Zone control valves are controlled by ____________________.

Correct AnswerverifiedShow Answer

Automatic air vents rely on an internal disc that swells when water is sensed.

Correct AnswerverifiedShow Answer

Why must the expansion tank always be located higher than the boiler?

Correct AnswerverifiedTo permit air in the...View AnswerShow Answer

The expansion tank provides a means of removing the air from the system as well as provides ____ .

Correct AnswerverifiedShow Answer

Discuss the outdoor reset control.

Correct AnswerverifiedThe outdoor reset control is the device ...View AnswerShow Answer

Explain the purpose of the pressure relief valve.

Correct AnswerverifiedThe American Society of Mechanical Engin...View AnswerShow Answer

What is the purpose of a system pressure differential bypass valve?

Correct AnswerverifiedOn systems that use two-port zone valves...View AnswerShow Answer

The only place a bleed valve is needed is on top of the boiler.

Correct AnswerverifiedShow Answer

Hydronic heat circulators are centrifugal pumps.

Correct AnswerverifiedShow Answer

In a series loop, the water going through the last terminal unit will be the same temperature as the water through the first terminal unit.

Correct AnswerverifiedShow Answer

Correct Answer
verified
When water is heated, it expan...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
To permit air in the...
View Answer

Correct Answer
verified

Correct Answer
verified
The outdoor reset control is the device ...
View Answer

Correct Answer
verified
The American Society of Mechanical Engin...
View Answer

Correct Answer
verified
On systems that use two-port zone valves...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified