All Plastic Vent Piping to Be Certified
HRAI hosted a meeting with stakeholders and following their recommendations, HRAI submitted comments on the ULC S636 letter ballot with respect to differences in temperature rating amongst standards (ULC, CSA, and ANSI). ULC plans to publish a revised standard in July 2007.
Following this meeting IPEX Inc., currently the only manufacturer of ULC S636 compliant venting systems, provided clarification on the joining of vent materials made from different thermoplastics. IPEX confirmed that it offers a listed solvent cement for transitioning between PVC, CPVC, and ABS materials. This cement is offered in order to adapt listed vent materials to the various appliance connectors on the market. The company also confirmed it will undertake to revise its installation instructions in order to minimize discrepancies between its venting systems manual and the appliance manufacturers’ installation guides.
Publication date: 07/02/2007