Gas Trade Unit 18: Water Heaters

TSSA G2 Certification - Practice Questions & Chapter Reviews

📋 Certification Level: TSSA G2 (Gas Technician 2 - Intermediate)
⚠️ Prerequisites: G3 Certification + 2 Years (4,000 hours) Experience

Master Gas Trade Unit 18 with free CSA B149.1-25 compliant practice questions for the TSSA G2 certification exam. This unit covers water heaters, combination heating systems, sizing calculations, and troubleshooting procedures for various water heating appliances.

📖 What This Unit Covers

Gas Trade Unit 18 focuses on water heater fundamentals:

  • Chapter 1: Water Heaters - Tank and tankless types, T&P relief valves
  • Chapter 2: Combination Systems - Combined heating and DHW systems
  • Chapter 3: Systems Sizing - Water heater sizing calculations
  • Chapter 4: Servicing Systems - Troubleshooting and maintenance

🎯 TSSA G2 Exam Relevance

CSA Code Reference: CSA B149.1-25 Section 9 (Water Heating Appliances)

Exam Coverage: Water heater topics appear in approximately 15-18% of G2 exam questions.

💡 Study Tips for Unit 18

  • Understand differences between tank and tankless water heater types
  • Master temperature and pressure relief valve requirements
  • Learn water heater sizing calculations for various applications
  • Study combination heating and DHW system designs
  • Review troubleshooting procedures for common water heater issues

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📖 Study CSA B149.1-25 Code

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📚 Additional G2 Study Resources

⚠️ Educational Resource Disclaimer: This practice test is an independent educational resource designed to help students prepare for the TSSA G2 certification exam. These materials are based on CSA B149.1-25 requirements but are not official TSSA materials. G2 certification requires G3 prerequisite plus 2 years (4,000 hours) documented experience. Always refer to the official CSA B149.1-25 code and current TSSA guidelines for authoritative information. LARK Labs is not affiliated with TSSA or CSA Group.