*Click image to enlarge. Download the B149.1-05 Amendments to the Natural gas and propane installation code, and the CSA-B149.1S1-07 Supplement No. 1 Package
There have been interesting amendments to Clauses 8.9.5 and 8.9.6, regarding plastic venting.
Download Questions and Answers regarding ULC S636 and plastic venting.
TSSA has also released two director's advisory's regarding plastic venting;
Director's Advisory FS-101-07 - Variance Conditions for Continued Use of Existing Uncertified Plastic Vent
Director's Advisory FS-102-07 - Variance Conditions for Vents Systems that were Installed Prior to August 1, 2007 but the
Appliance Not Activated Until After August 1, 2007
An application for a Variance/Deviation
form is required if Clauses 8.9.5 and 8.9.6 cannot be met.
HVAC TECH GROUP - CAN/CSA-B149.1-05 - Amendment FS-098-07 https://hvactechgroup.com/article.php/20070430032400807