Dave Yates job

Dave Yates (GrandPAH)_1

Dale,

Thanks! When I ran the calcs in the Watts design software, the temps jumped off the page at me as the three areas had cascading temp requirements that fit like pieces of a jigsaw puzzle. So, I called up the folks at Watts and sent in my design via e-mail to ask if I could couple them together without botching up the flow rate. They gave me the green light & the rest, as they say, was history. Each return manifold became a combination return/supply.



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Dale

Dave Yates job

Just finished the story of the Mount Joy Pa. job Dave Yates crew did. Good pictures and story, John Hall,in the Oct. 16 HVAC news. Lots of good features,even one showing the boss at work. What impressed me most was a design that reduced parts,cost and complexity by running the high temp water first the high temp zones and then continue the loop through the lower temp zones. I wonder how many guy would trust themselves to do that? I hope Dave can post the piping schematic, very impressive.

S Ebels

Final temp?

What kind of temp drop are you getting when all is up and running?

Dale

thanks

Thanks for the reply Dave, when I read that I thought this was a truely elegant design. Makes so much sense. Took allot of confidence on your part. If I would have even seen this possibility I know I would have brought the loop temperature connections into the basement in case I make a mistake and had to have separate loops.

Dave Yates (PAH)

yup

they are in the basement - I too like to keep all points of connection in the open. Thanks & we've repeated this "trick" on several other jobs since then. There a Wirsbo massive retro-fit to replace a failed radiant (bad design & even worse install - not Watts or Wirsbo originally) system in Lancaster that benefited greatly too. During that retro, we placed the older side (cast iron rads) on 100% reset and utilized reverse-return to correct severe imbalance issues. 90% of the hardest design work is done before we leave the office!

Steve, If I remember correctly, there was a delta-T of 30F to 45F.

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