Name: 
 

Chapter17



True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

As water is heated, the volume of the water is decreased.
 

 2. 

In a series loop system, the last heater in the circuit will be the warmest.
 

 3. 

In a one-pipe system, the same pipe that carries the supply water from the boiler also carries the return water back to the boiler.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 4. 

Which control will prevent the “dry firing “ of the boiler?
a.
aquastat
c.
low-water cutoff
b.
reset control
d.
water regulating valve
 

 5. 

Water flow rate for a hydronic heating system is measured in ____.
a.
gallons per minute
c.
gallons per second
b.
gallons per hour
d.
ounces per minute
 

 6. 

What voltage are most zone valve motors?
a.
24 V
c.
208 V
b.
115 V
d.
220 V
 

 7. 

The majority of radiant heating piping systems are located in the ____.
a.
ceiling
c.
floors
b.
walls
d.
all of the above
 

 8. 

When troubleshooting a hydronic heating system, the technician notices that the circulator pump is running and the burner is firing, but no hot water is flowing through the system. What is the most likely problem?
a.
defective circulator pump
c.
air in the system
b.
defective room thermostat
d.
high limit open
 

Short Answer
 

 9. 

Name four different methods for heating water in a boiler heating system.
 

 10. 

What is another name for a flow control valve?
 



 
Check Your Work     Reset Help