Header Tank Fed Systems - Open Vented Storage Water Heater System

Open vented storage water heater system with supply from header tank

 

You can find detailed information about these systems in the following standards:

  • AS/NZS 3500.4 Heated water services - Acceptable Solution
  • NZBC G12/AS1 6.0 for Hot water supply systems

 

Typical hot water storage heater installation systems include:

 

  • ·         An open vented system with supply from header tank (as per image)
  • ·         An open vented system with supply via a pressure-reducing
  • ·         A low pressure unvented system with supply via a pressure reducing valve
  • ·         Mains pressure unvented system

 

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MAINS PRESSURE CYLINDERS

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LOW PRESSURE CYLINDERS

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GAS WATER HEATING

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