We never put tubing down without having load calcs done and specific drawings giving spacing, length of loop, flow rate and water temp.Hey guys, how many inchs do you guys leave for the spacing between the pex tubing for on top of floor heating? The pex is 3/8. Thanks
Oh ok thanks just had it installed and it is about 11 inches apart. Thought that was kinda wide. They are all small rooms. Hopefully all works out.. Thank you
In the applications that I've been involved with, there is usually closer spacing along outside walls, due the fact that there is a heavier load. 6" spacing for at least the first 2 or 3 passes, then 12" centers for the remainder, although there have been a few cases where 9" was speced.Thanks was just curious. Figured it would be difficult to answer without more demensions. Do you usually space it closer in a concrete basement slap then you would on top of plywood?
Very old technology, Hicksville all the levitt houses from the 40'S used radiant, copper tubes that mostly started to get replaced in the 80,s due to failiure, i am expecting the PEX to last much longer, GMODThanks first time im seeing it installed. Looks awesome the way you guys install it. Funny thing is everytime I talk about it to people outside the construction business they think its something new..
that question would depend on a number of factors such as knowing the pump curves etc of the circulator you are using. this can be engineered but is beyoun my capabilities at this moment due to exhaustion and massive alcohol consumption caused by the second blizzard in 5 daysOn 1/2 inch, what would be the maximum loop length you would be comfortable with? What kind of resistance to flow would you expect per hundred feet?
J, i am no expert, but 1000ft sounds to long regardless of the GPM, the real problem i think will be heat delivery, by the end of 1000ft you will disapate all your hot water, GMODI have 3 1000 foot loops for the new house, no pump yet, but this will be a passive solar system....may work great, may not. It would seem a lower GPM with sufficient pressure would overcome the length of the loops.