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Doug Miller Doug Miller is offline
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Default Replumbing one-pipe diverter tee system

This is the third house I've owned, and they all had single pipe heat
(although the other two used copper). All of them implemented them with
the diverter's output on top, and then attached a 90 degree elbow to
run the pipes horizontal to the branches. I can't figure out why they
didn't just run the output out the side and then attach the branch
tubing directly to the tee. Any ideas? Is it to let the air rise to the
radiators instead of getting trapped in the trunk?


That's one possibility, sure. Another is that they were originally designed
for, and installed as, convective (gravity) circulation, and later converted
to pumped circulation.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.