\"L\" or \"M\" type.?

Rich Kontny_3

Steve,

You beat me to it, in fact I would insulate or at least coat the copper with shellac or urethane. The copper in a chlorine atmosphere is ugly at best.

We have done many school type pools and natatorium applications where the ductwork is either stainless or more often aliminum due to the chlorine.

Kind of makes you wonder what it does to our lungs???

Rich

Derheatmeister

\"L\" or \"M\" type Cu pipe?

I've just am revanping a Pool mechanical room and ordered 1 1/2 " and 2" L type Cu pipe i think that since a state inspector will be inspecting this job i will have to:

1.Use "L" Type copper?

2.Install some Low water cutoffs ,is it possible to just install a "riser" above the boilers with a Low water cutoff or do i need to install a loop above to boilers?

Triangle said that i do not need a Lwco, but i do not want to argue with the inspector.

what do yall think? Heatmeister.

Weezbo

i hate the price of copper...

and yet i going to say go with the L...

if you have more than one boiler...i am inclined to say even in residential units two low waters bettern one.

oops TT may have a point.. they have one already installed in boilers that i am most familiar.

WV EGBERT_2

I would

use M for any of the hydronic piping and save the L for only domestic. It's code, and inspector should not have a problem with that,

The low pressure switch is not technically a LWCO, on the TT I add a tee at the hy-vent and put the LWCO there. I don't think being in the flow a problem.

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tim smith

I agree on flow is not an issue on lwco

Install on Tee at top of boiler with a good vent that allows vacuum breaking so if boiler does have leak below it will drain down and shut off. Some vents wont allow for vacuum break and the air lock and lwco will not shut off. Tim

Bob Sweet

I'm with Singh

Type M is all that it is req. (atleast here it is) i'm all for over building, but if this is a bid job you know your competition will spec minimum standards required.

I'm just south of you (about 8 hrs) and here LWCO are not req. on pool mechanical rooms. Not sure which code your under.





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STEVE PAUL_3

copper in pool atmosphere

Even though the code allows "M" copper, I would use the heavier "L" copper to resist the corrosive chlorine atmosphere in the pool mechanical room.