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Central Heating

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

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Pipework

Open-vented System

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Maintenance

Commissioning

Heating system water analysis

Servicing

Controls

Circulating Pump

Heating System Controls

Minimum Requirements

Room Thermostats

Regulations

Regulations

Heat Emitters

Heat Loss Calculation

Radiator Sizing

Types

Pipework

Fully Pumped Hot Water and Central Heating

Gravity Hot Water and Pumped Central Heating

Gravity System

Open-vented System

Pipework Sizing

Pipework Systems

Sealed Systems

System Layout

Underfloor Heating

Boilers

Boiler Sizing

Flue Types

Gas Boilers

Heat Pumps

Oil Fired Boilers

SEDBUK Rating

Solid Fuel Boilers

F&E Tank or Feed and Expansion Cistern

  • Water Level :
    • MUST be set to allow 4% expansions of the water in the system
    • SHOULD be set just above the cold feed to heating system
    • MUST be below that of the CWSC to prevent contamination
  • 18L – common size of F&E for domestic
  • MIN height of F&E - pump head divided by 3 (to avoid problems with gravity primaries)
< Go Back2013-04-19

Open Vent Pipe

    • MIN size is 22mm
    • Primary open vent rises for 450mm above the cistern – preventing surge effect
       primary vent pipe hight
    • No valves on the pipe
< Go Back2013-04-19

Air Separator

    • causes turbulence that separates the dissolved oxygen

Air Separator Installation Details

< Go Back2013-04-19