|Question: 04-44||Code Section: 7||Date:||
OBC 2006 Reference:
Question: Is the pipe manufactured by Wirsbo for distribution systems? What type of pipe is it and where is it referenced in the code?
Interpretation: (On. Reg. 403/97) Wirsbo tubing is manufactured for distribution systems and is referred to as Aquapex. The name gives away the type of pipe and that is PEX which stands for Cross-linked polyethylene (PE...polyethylene and X...cross-linked). The references in the code are in 126.96.36.199.(4) and 188.8.131.52. You should also check the Appendix for additional information A-21 and for a quick summary A-22. It must be certified to CAN/CSA-B137.5.
Note: Be careful of other Wirsbo product designed for radiant floor heating called HePex. That product is NOT approved for potable water.