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Gas Appliances

Exam revision materials for Plumbing Level 2&3 and ACS Gas Safety test

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Water Heaters

Construction and Operation

Construction and Operation

  • Single-point - normally the flueless type
  • Multi-point - normally a room sealed type
  • combustion chamber and heat exchanger
  • water section with automatic valve, slow-ignition device and temperature selector
  • gas section with governor or throttle, main gas, pilot and burner
  • ignition device and flame supervision device

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