CSA Group's 2015 Gas Trade materials reference the Red Seal Program's trade outlines for your preparation to become a nationally recognized gasfitter. Please visit the Red Seal Program's website for more details.
The main functions of venting systems are:
All forced-air gas-fired furnaces manufactured or sold in Canada after January 1, 2010, are required to be high-efficiency, condensing-type appliances that are vented into special venting systems (BH vents). However, there are still a large number of existing low- and mid-efficiency furnaces along with currently manufactured and existing water heaters, boilers, and space heaters that operate with natural draft venting systems.
It is more important that gas technicians/fitters understand the requirements for proper installation and operation of natural draft venting systems since technicians/fitters must make crucial decisions regarding the size, location, and type of material for natural draft vents.
At the end of this unit you will be able to: