PEX in Heating Application 1

[MagicJS]

Hi,

Has anyone used PEX tubing for distribution of 200 degree heating water to baseboards, not just radiant floor heat.

Is PEX rated for this application and are there any code limitation to it's usage?

Thank you.

 

[stanlsimon]

I have never gone over 180 deg F. The manufacturer should give you pressure ratings at different temperatures. 160 or 180 was the max. The Uponor web site gives this info:
Temp & Pressure Ratings: 200°F at 80 psi, 180°F at 100 psi, and 73.4°F at 160 psi.

Most hot water heating boilers have a high limit set at 180 or so, because you are trying to make hot water not steam.