Combining supply lines to manifolds?
I have two manifolds at the West end, a 4 loop and a 7 loop.
I have a total of 11 (3/8) loops. Do I need to make 2x home runs of 1" to the heat pump, or can I run a single 1" and tee it there?
It is about 5.5 GPM, about 38' of run from the heat pump and plumbing.
Comments
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is this hot water radiant heating?
3/4" copper pipe is good for up to about 6.5 gpm. if the supply is pex the id is smaller and you have to look at the chart, so one pipe is enough as long as you have a way to balance each loop.
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If you total max flow is 5.5gpm use 1" with a tee for both manifolds
3/4 is good for 4 gpm
1" is good for 8gpm
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Pex pipe pipe fittings have different ID specs. Uponor fittings have the largest ID specs—the ones MOST approaching actual nominal dimensions.
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Yes, the source is a ground source heat pump. Each manifold is the typical setup with balancing on the load and a circuit isolation valve on the return.
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yeah, that supplyhouse chart is using some weird max fps, 4gpm is usually what is used for 3/4"
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