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. Unit 22 - Venting practicesPurpose: The main functions of venting systems are:
To completely vent the flue gases to the outdoors without spillage into the building. (This ensures that the indoor air quality of the building is not compromised by installed appliances)
To effectively vent at a rate that ensures the proper operation of the appliance
To operate safely in terms of fire
To keep the weather out of the building.
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.Learning Objectives: At the end of this unit you will be able to:
Describe venting systems.
Describe vent design and installation requirements.
Size venting systems.
Describe vent installation and assembly.
Describe vent inspection.
Locate and size air supplies for equipment with inputs of 400 MBtu/h or less and over 400 MBtu/h.
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. Unit 22 - Venting practicesPurpose: The main functions of venting systems are:
- To completely vent the flue gases to the outdoors without spillage into the building. (This ensures that the indoor air quality of the building is not compromised by installed appliances)
- To effectively vent at a rate that ensures the proper operation of the appliance
- To operate safely in terms of fire
- To keep the weather out of the building.
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.Learning Objectives: At the end of this unit you will be able to:
- Describe venting systems.
- Describe vent design and installation requirements.
- Size venting systems.
- Describe vent installation and assembly.
- Describe vent inspection.
- Locate and size air supplies for equipment with inputs of 400 MBtu/h or less and over 400 MBtu/h.
