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Old 02-25-2012, 01:47 AM   #1
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shut of and drain valve placementin Home Run Heating

I have a Home Run 2 zone heating system installed. I am adding the 3-rd zone.
On each return line in each loop Contractors put shut off valves. There is only one Drain valve for the whole system.

If I am correct, currently there is no way to drain each loop,only all together. Also I do not think I can isolate a particular loop in case of a problem with the loop since I only have shut off valves on return lines.

Since I am going to install the 3-rd zone, I would like to make it correct.
What should I do in order to have:

Ability to drain each loop separately
Ability to isolate each loop

Should I install shut off /ball valve on return and supply line on each loop and Drain valve on return line of each loop?

Thank you,


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Old 02-25-2012, 07:54 AM   #2
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Should I install shut off /ball valve on return and supply line on each loop and Drain valve on return line of each loop?
Ayuh,.... If that's what ya want, then Yes, do it while ya got it drained....

In the system I built last year,...
I put in isolation valves, to isolate the loops,...
But, the whole system still drains from the boiler...


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