ULC S636 Plastic Venting Requirements

[Admin]

There have been interesting amendments to Clauses 8.9.5 and 8.9.6 of the CAN/CSA-B149.1-05, Natural gas and propane installation code, regarding plastic venting.  In Ontario these amendments DO NOT take affect until August 1, 2007.

Download Questions and Answers regarding ULC S636 and plastic venting - Here

Clause (8.9.5) - Venting systems, or total vent run if less than 3 ft (900mm), that employ plastic vents shall be installed such that the first 3 ft (900mm), from the appliance flue outlet is readily accessible for visual inspection except for direct vent appliances such as fireplaces that are intended to have short vent lengths to be concealed for decorative purposes.

Clause (8.9.6) -
(a) Until July 1, 2008, vents constructed using plastic piping shall be certified to ULC S636 except for special fittings (non standard vent sizes and components) which may include:
 a. entire vent systems supplied with the appliance that are not comprised of standard vent sizes and components;
 b. transitions with or without condensing lines; and
 c. termination kits.
(b) After July 1, 2008, vents constructed using plastic piping shall be certified to ULC S636.

I could only find a couple of manufacturers.

IPEX Webpage or GVS Webpage



You can register and take the online course - Here.  They will mail you a certificate, then your certified to work with System 636™ pipe.  

[Admin]

Download Director's Advisory FS-101-07 - Variance Conditions for Continued Use of Existing Uncertified Plastic Vent - Here

Download Director's Advisory FS-102-07 - Variance Conditions for Vents Systems that were Installed Prior to August 1, 2007 but Appliance Not Activiated Until After August 1, 2007 - Here

Download the Application for a Variance/Deviation FS09533 - Here
*Update* December 12, 2012 - Download the updated TSSA Application for a Variance - Here

[HVACJOE]

You know I already broke a length of that 636, and I've never broken a length of abs, Im wondering if this is just someone greased someone elses palm and got only 636 to be used ( only one supplier that I've heard of ) and if its going to end up being recalled and changed back to abs or something else in a year or two.