Hydronic Heating Systems Exam 1 Questions
with Correct Answers
What is the name of the piping system in which the heating transfer units are part of the
piping?
Series loop
What is the name of the piping system in which the heating transfer units are supplied
by a speciality tees?
One-Pipe
What is the name of the piping system in which the first transfer unit supplied is also
the first returned?
Two-Pipe Direct Return
What is the name of the piping system in which the water has approximately the same
distance to travel for each heat transfer units?
Two-Pipe Reverse Return
What is a major disadvantage of the series loop piping system?
Limited heating capacity for each circuit
What is a major disadvantage of a One-Pipe system?
End heat transfer units receive cooler water
What is a major disadvantage of a Two-Pipe Direct Return system?
Hard to balance flow of each heat transfer unit
What is a good choice for an isolation valve?
with Correct Answers
What is the name of the piping system in which the heating transfer units are part of the
piping?
Series loop
What is the name of the piping system in which the heating transfer units are supplied
by a speciality tees?
One-Pipe
What is the name of the piping system in which the first transfer unit supplied is also
the first returned?
Two-Pipe Direct Return
What is the name of the piping system in which the water has approximately the same
distance to travel for each heat transfer units?
Two-Pipe Reverse Return
What is a major disadvantage of the series loop piping system?
Limited heating capacity for each circuit
What is a major disadvantage of a One-Pipe system?
End heat transfer units receive cooler water
What is a major disadvantage of a Two-Pipe Direct Return system?
Hard to balance flow of each heat transfer unit
What is a good choice for an isolation valve?
