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Central Heating

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

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Boilers

Boiler Sizing

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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

Boiler Sizing

  • Total up the sum of all the heat losses from the rooms and add an allowance for pipework heat losses and hot water
    • Pipe heat-loss allowance - 10% (if fair proportion of pipework is installed under suspended timber floor or in the loft)
    • Hot water heat requirement - 1kW of boiler heat for every 50 litres
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Whole House Boiler Sizing Method

    • the method is usually preferred for determining the boiler output when replacing an existing oil or gas fired boiler
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