Most hydronic heating systems are A) Open systems in cooling ...

[tingc95]

Most hydronic heating systems are
 
  A) Open systems in cooling and closed systems in heating
  B) Closed piping systems
  C) Closed systems in cooling and open in heating
  D) Open piping systems

Question 2

What is the purpose of a reverse return piping system?
 
  A) To operate a two pipe system like a one pipe system
  B) To keep the length of piping the same for each convector unit
  C) To allow the flow direction to be reversed for cooling
  D) To reduce the amount of piping required

[bfulkerson77]

Answer to Question 1

B

Answer to Question 2

B

[tingc95]

Thanks for the timely response, appreciate it

[komodo7]

Great answer, keep it coming