pex heat lines

Billy_3

I just wanted to know if you guys think there is anything wrong with running 1/2" pex for heat lines on a new baseboard loop. I have always run 3/4 copper and I have talked to a lot of other plumbers and a lot of them think I am crazy.

Al_3

Pex heat lines

No prob with that at all, granted that you have done the flow calcs for your particular application.

Billy_3

I have

But is there any reason that copper would be better? I don't know why but for some reason I just like running copper better. If it is not neccesary then I am wasting my time I guess

Mike Kraft_2

You might try.........

pex - aluma-pex.I use Wirsbo's multi-core tube.You can run a feed and return from manifolds to all your baseboard and have a very even temp.Very nice.

cheese

Keith_5

pex lines

Frank, We just finished an affordable housing project using pex for the branch piping. We piped it in a reverse return arrangement(copper), zone valves off the mains with isolation ball valves and purge valves. The branches were all 5/8" pex to the baseboard. Worked like a champ and saved a ton of labor.
Be a little careful with the 1/2" in regards to your btu capacity.
Good Luck, Keith

kevin coppinger_4

keep the runs to baseboard

loops less than 30' of fin... it gets a bit iffy after that if you want to keep that 20F delta T. You could go w/ a split loop and stretch it more.kpc

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hr

5/8\" is

often used for baseboard runs. all the manufactures have a 3/4" sweat to 5/8 pex ells.

I, too, like pex al pex for baseboard runs. In addition to less expansion, and ease of installation, it is easier on the element, strain wise.

More flow than 1/2" but you still need to run some cals for btu carrying capacity.

hot rod

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heatboy

I agree, Cheese.

Setting a manifold and running individualsupply and returns to each room or area, is the only way I do baseboard, convectors, radiators, etc. Wirsbo MultiCor really works well with this. Each room gets the same water temperature so calculating drops is not needed. Also, less electrical consumption from the pump. For the most part. I can set my Grundfos 15-58 on speed one and still get less than a 20° drop across the baseboard with 40 watts of power. Zoning is also super easy with telestats mounted to a central manifold station(s)or non-electric valves on the units. With all of the better piping options available, series piping should become obsolete.

hb

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S Davis

Wirsbo Multicore

Have any of you guy's used the new Multicore fittings, I Beleve the are a crimp. Any Info, how did they work, I have used 1" Multicore and it is very hard to work bends.

S Davis