Piping up a boiler?

[heaterman]

The most common question I get is, "what size pipe/pex/tube do I need".

Here's some good summertime reading material along with formulas to figure out the answer to that question.

http://www.pmmag.com/Articles/Column/BNP_GUID_9-5-2006_A_10000000000001174319

 

[ewdudley]

Lot of good advice there. No sweeping commandments, just things to be aware of that could easily get you in trouble if you don't do your homework.

I especially like the one about the undersized circuit as a priority zone, for instance an indirect tank DHW load. That could be a frustrating puzzle until you figured it out

 

[BoilerMan]

It's stuff like this that I could read all day! Lots of good info, and some of the things which I've seen in the feild as well. Noteably the three way mixing valve on a large radiant system, secondly, the globe valves for isolation.
Taylor

 

[DaveBP]

But then, if everyone read and understood this article, there wouldn't be nearly as many threads on this forum for us all to read on a rainy day like today.

 

[Tennman]

Goose really should add this to that Useful Tidbits sticky. Good data. I may play with the equations to compare to the calcs in the Taco Datasheet. I've read here about this guy John Siegenthaler for years and he's spoken of as a legend. Looks like he's very much still alive (much to my surprise). Thx HM

 

[heaterman]

Oh yes. Siggy is very much alive and well.

Check out his website.
http://www.hydronicpros.com/