Advanced Gas Trade Training Units for TSSA G2 (Gas Technician 2 - Intermediate) certification. Comprehensive CSA B149.1-25 and B149.2-25 applications for independent gas technician work in Ontario.
Before pursuing G2 certification, you must have:
Advanced gas measurement, metering, and pressure regulation systems - essential for complex installations and commercial work.
CSA Code: B149.1-25 Section 5 (Gas Supply and Metering)
Swimming pool heating systems, advanced boiler installations, and water heating applications for commercial settings.
CSA Code: B149.1-25 Section 6 (Water Heating Equipment)
Advanced forced air heating systems, furnace installation, airflow calculations, and ducting requirements per code.
CSA Code: B149.1-25 Section 6 (Furnace Installation)
Advanced control systems, thermostats, safety interlocks, and troubleshooting for gas appliances and systems.
CSA Code: B149.1-25 Section 3 (Control Systems)
Understanding building science, stack effect, depressurization, and building-appliance interactions for safe installations.
CSA Code: B149.1-25 Section 7 (Venting in Building Context)
Advanced water heater sizing, installation, safety systems, and maintenance for residential and commercial applications.
CSA Code: B149.1-25 Section 6 (Water Heating Equipment)
Advanced direct vent, power vent, and tankless water heater technologies, installations, and troubleshooting techniques.
CSA Code: B149.1-25 Section 6, 7 (Vented Water Heating)
Gas cooking appliances, installation requirements, gas pressure adjustments, and safety systems for commercial settings.
CSA Code: B149.1-25 Section 6 (Cooking Appliances)
Gas dryer installations, fuel conversions, and various specialty gas appliances for residential and commercial use.
CSA Code: B149.1-25 Section 6 (Dryers and Appliances)
Hydronic heating fundamentals, boiler systems, piping configurations, and water-based heating distribution systems.
CSA Code: B149.1-25 Section 6 (Hydronic Equipment)
Radiant heating design, installation, controls, and applications for residential and commercial comfort heating.
CSA Code: B149.1-25 Section 6 (Radiant Heating)
Gas fireplaces, space heaters, unit heaters, and decorative appliances - installation, venting, and safety requirements.
CSA Code: B149.1-25 Section 6 (Space Heating)
Advanced venting design, vent sizing calculations, Category I-IV appliances, and combustion air requirements - heavily tested.
CSA Code: B149.1-25 Section 7 (Venting and Combustion Air)
Air filters, humidifiers, cooling coils, and IAQ equipment integration with forced air gas heating systems.
CSA Code: B149.1-25 Section 7 (Ventilation and Air Quality)
Load calculations, heat loss/gain methods, appliance sizing, and air handling unit operations - final G2 unit.
CSA Code: B149.1-25 Section 9 (Appliance Sizing)
G2 training builds directly on Gas Trade Units 1-9 from G3 certification. Make sure you have strong understanding of:
Advanced CSA-Compliant Study Materials: This content is provided by LARK Labs as independent educational resources for TSSA G2 intermediate certification. Materials are based on CSA B149.1-25, CSA B149.2-25, and advanced Gas Trade Training curriculum. We are not affiliated with CSA Group or TSSA.
Supplementary Training: These advanced materials complement official TSSA-accredited G2 training programs but do not replace certified instruction. G2 certification requires completion of an approved training program, valid G3 certification, and documented field experience.
Code References: All code references are to CSA B149.1-25 (17th Edition, 2025) and CSA B149.2-25 (7th Edition, 2025). Always consult official published codes for authoritative information on complex installations.
Created by: Mike Kapin | 20 years field experience + 10 years teaching HVAC and Gas Trade programs at Fanshawe College
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