Instructions / Assembly

Introduction
System 636
®
PVC and CPVC Type BH Gas Venting Systems are third party certified to ULC S636, latest edition.
The following installation methods have been prepared in conformity with the requirements of section 4 of ULC Standard S636.
1. Product Application
IPEX System 636 PVC and CPVC Gas Venting Systems are intended for positive and negative pressure venting of gas fired appliances
producing exhaust gases having temperatures limited to the range specified in 1(a) and 1(b).
(a) System 636 PVC venting systems are suitable for temperatures up to and including 65°C (149ºF); ULC S636 Class IIA.
(b) System 636 CPVC venting systems are suitable for temperatures up to and including 90°C (194ºF); ULC S636 Class IIB.
System 636 PVC and CPVC have a zero clearance to combustible construction.
2. Limits of Use and Application
(a) Improper installation of System 636 PVC or CPVC systems may result in personal injury or death. Only qualified personnel should
attempt the installation of gas burning equipment, following the gas appliance manufacturers directions.
(b) All System 636 gas venting pipe and fittings must be carefully inspected before use to ensure no damage has occurred during
transportation. Any damaged product must be replaced. No attempt at repairs are to be made at the job site.
(c) The common temperature changes in a gas venting application will cause the system to expand and contract accordingly, proper care
must be taken to allow for this movement through walls, ceilings, and roof penetrations. The venting system must be supported in
accordance with these instructions.
System 636 Installation Methods
1