> He used a plastic sleeve over the tubing where it passed through the floor
> to reduce abrading of the pipe where it meets the top edge of the
concrete.
Good point, note taken
> He also mentioned that the pipe was pressurized during the concrete
> pouring/curing process. This caused the pipe to expand slightly, and
> provided expansion room for the pipe once the hot water was circulated
> through the system.
Another good idea. I guess you could plug one end and clamp an air coupler
to the other. I'm sure that tubing is rated at over 200 psi. Or cut down
the regulator.
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