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I'm retrofitting a hydronic install (staple-up).
I've got a couple of rooms where I need 2 or 3 loops.
I.e- One of my bedrooms needs 386ft of 1/2" piping to make the loop. So this would mean 2 loops. My calculation program shows 0.44usgpm flow, with a 0.61 ft head.
If the distance to the mechanical room is 30ft, could I run a 1/2" pex to the room in question, then Tee off with the two 1/2" tubing loops. Return with a similar Tee and then back to the boiler. The Tee's would in essence be a distribution manifold. Does it make a difference if I branch off on one loop and do the other one with the 'running' leg, or would I have to feed in at the bottom of the Tee and branch off to both sides with the runs?
The two runs would be exactly the same length (152ft), within a couple of inches. This would mean that I could 'save' on another set of valves etc on the main manifold in the boiler room.
To me, this would mean that the friction losses in both loops are identical, therefore giving me the same flow (hence heat output) in each loop.
Am I missing something?