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buffalobillpatrick · 02-20-15, 07:57 PM

http://www.uponorpro.com/~/media/Ext...spx?sc_lang=en

See Table 15-1

They say turbulent flow starts with water around 8'/sec & stay below that speed.
Nominal 5/8" pex can deliver about 50% more heat than 1/2"

Use ECM pumps like Grundfos Alpha.

I think radiant floors are more-or-less self-adjusting on moving heat into areas of room that need more heat, especially with constant or semi-constant circulation.

If an area under a window needs more heat, the slab will become cooler there, more heat will be pulled out of the pex there, and more heat will be radiated there.

02-20-15, 07:57 PM	#497
buffalobillpatrick Master EcoRenovator Join Date: Mar 2014 Location: Florissant, Colorado Posts: 599 Thanks: 814 Thanked 59 Times in 55 Posts	http://www.uponorpro.com/~/media/Ext...spx?sc_lang=en See Table 15-1 They say turbulent flow starts with water around 8'/sec & stay below that speed. Nominal 5/8" pex can deliver about 50% more heat than 1/2" Use ECM pumps like Grundfos Alpha. I think radiant floors are more-or-less self-adjusting on moving heat into areas of room that need more heat, especially with constant or semi-constant circulation. If an area under a window needs more heat, the slab will become cooler there, more heat will be pulled out of the pex there, and more heat will be radiated there.