Standard for Lining Systems for New Masonry Chimneys

ULC Standards Logo
Standards Development Organisation:
ULC Standards
Contact Information:
ULC Standards Normes ULC
Working Program:
View the ULC work program
Designation Number:
CAN/ULC-S640
Standard Type:
National Standard of Canada - Domestic
Standard Development Activity:
Reaffirmation
ICS code(s):
91.060.40
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

1.1 These requirements cover lining systems for new masonry chimneys.
1.2 Liners are for use with gas, liquid and solid fuel fired residential appliances and building heating equipment, where the flue gas temperatures normally do not exceed 650 °C. They are intended for use in accordance with the National Building Code of Canada, CSA B139 - Installation Code for Oil Burning Equipment, CSA B149.1 - Natural Gas and Propane Installation Code Gas Burning Equipment, CSA B365 - Installation Code for Solid Fuel Burning Appliances and Equipment, and CAN/CSA A405, Design and Construction of Masonry Chimneys and Fireplaces.
1.3 Liners are intended for field installation in masonry or concrete chimneys located inside or outside of buildings to provide an essentially vertical conduit or passageway for conveying flue gases to the outer air from the above described class of appliances.
1.4 Liners as covered by this Standard are intended for installation in accordance with the manufacturer's Installation Instructions.
1.5 Liners, as covered by this Standard, are not intended for use with high efficiency appliances that require type BH gas venting systems, or that create positive pressures in the chimney, unless specifically listed for such application.

Project need:

ULC is seeking only to maintain the currently published requirements in CAN/ULC S640, 2nd Edition as a National Standard of Canada. There are no new revisions being proposed at this time.

Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.

Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.