Hydronic heating Midterm Exam Questions
with Correct Answers
What is the purpose of a circulator
To move the water throught the boiler, piping, and radiator. A pump
What component of a circulator moves the water
The impeller
Water is pulled into the eye of the....?
Impeller
What device house the impeller
The volute
Where can we find the direction of flow through the system
On the volute
What is a pump flange
A connection point between the pump and system piping
Where is the best location to install a circulator
Just after the expansion tank "pumping away"
Define pumping away
What is the advantage of pumping away
Overall system pressure rises the air bubble in the system are smaller this makes the task of
removing dissolved air easier
, Name 2 common types of circulators used in hydronic heating systems
Oil lubricated and water lubricated "wet rotor pumps"
Which type of circulator is physically larger
Oil lubricated
Which type of circulator is a B&G 100
Oil lubricated
What type of circulator is a taco 007
Water lubricated
A spring coupler is used to connect the...
Motor shaft to the pump input shaft of an oil lubricated circulator
Worn, sagging motor mounts could cause...?
Coupler failure
Which part of an oil lubricated circulator contains the bearings, seals and pump shaft
Bearing assembly
Wet rotor circulators do not require
Regular maintenance, a coupling, no bearing assembly, do not need to be oiled
Wet rotor circulators use water to lubricate the...
Motor bearings
One possible disadvantage of a wet rotor circulator is
Limited capacity
with Correct Answers
What is the purpose of a circulator
To move the water throught the boiler, piping, and radiator. A pump
What component of a circulator moves the water
The impeller
Water is pulled into the eye of the....?
Impeller
What device house the impeller
The volute
Where can we find the direction of flow through the system
On the volute
What is a pump flange
A connection point between the pump and system piping
Where is the best location to install a circulator
Just after the expansion tank "pumping away"
Define pumping away
What is the advantage of pumping away
Overall system pressure rises the air bubble in the system are smaller this makes the task of
removing dissolved air easier
, Name 2 common types of circulators used in hydronic heating systems
Oil lubricated and water lubricated "wet rotor pumps"
Which type of circulator is physically larger
Oil lubricated
Which type of circulator is a B&G 100
Oil lubricated
What type of circulator is a taco 007
Water lubricated
A spring coupler is used to connect the...
Motor shaft to the pump input shaft of an oil lubricated circulator
Worn, sagging motor mounts could cause...?
Coupler failure
Which part of an oil lubricated circulator contains the bearings, seals and pump shaft
Bearing assembly
Wet rotor circulators do not require
Regular maintenance, a coupling, no bearing assembly, do not need to be oiled
Wet rotor circulators use water to lubricate the...
Motor bearings
One possible disadvantage of a wet rotor circulator is
Limited capacity
