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Gas Appliances

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

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Boilers

Boiler Installation

Requirements

  • BS 6798 - installation of gas boilers up to 70kW
  • LPG (3rd family gas) boilers shall not be installed in a basement or cellar
  • The space around the boiler is MIN 75mm from any combustible material

  • Where open-flued boilers are used
    • the air vents or door MUST not communicate via a bathroom/shower room
    • with air vents communicating with a bedroom are to be MAX 14kW and MUST have ASD

  • For premisses over two storeys :
    • the cupboard should be lined to give a MIN of half an hour's fire resistance
    • air vent MUST go directly to outside

  • Only room-sealed appliances are allowed for bathroom/shower-room installation
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