Make a point of locating your main water shutoff, ensure it is well labelled and advise everyone…
An Uponor plumbing system features Engel-method crosslinked polyethylene (PEX) tubing. This is a flexible plastic tubing product that has been used for more than 35 years in radiant floor heating, plumbing and fire safety systems.
The gray water line is Polybutylene (Poly-B for short) and is no longer manufactured.
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A certified appliance refers to a designation affixed to the appliance by means of a a label. This label is provided by the company that has "certified" the appliance in terms of function and clearance to combustible materials. It is not a CSA sticker! The label will refer to the Authority that has performed the certification as well as the clearances (front, back and sides) as determined in the process and any other relevant information as pertains to the appliance. If the label is not present the unit is deemed "uncertified" and therefore not in compliance with the requirement for most Insurance carriers