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What is the purpose of an expansion vessel in a sealed central heating system?

• To control the temperature of the heating system

• To replace the feed and expansion cistern

• To discharge excess water pressure

• To allow space for the heated water to expand

What is the advantage of using copper pipe for central heating system pipework?

• It is highly flexible for fast and easy installation

• It can withstand high internal pressure

• It provides an instantaneous hot water supply

• It contains all the safety controls for a sealed system

What type of boiler provides central heating and an instantaneous hot water supply from a single appliance?

• Biomass boiler

• Combination boiler

• System boiler

• Micro CHP boiler

Where can an installer find information on the correct type of barrier pipe to be installed in the first fix of a heating circuit?

• Government regulations

• Local hardware store

• Online forums

• Manufacturer's literature

What is the purpose of a pressure relief valve in a central heating system?

• To provide an instantaneous hot water supply

• To control the temperature of the heating system

• To discharge excess water pressure

• To replace the feed and expansion cistern

What is the purpose of a filling loop in a sealed central heating system?

• To discharge excess water pressure

• To replace the feed and expansion cistern

• To control the temperature of the heating system

• To fill the system with water

What type of heat emitter is suitable for a dwelling with a risk of contact to hot surfaces?

• Column

• Panel convector

• Low surface temperature

• Underfloor heating

What type of pump can provide automatic speed change as the resistance of the system changes with the opening and closing of zones on the pipework system?

• Common circulator pump

• Pump with different speed selections

• Circulator pump with integrated differential-pressure control

• Basic model pump

What is the purpose of a system boiler in a central heating system?

• To discharge excess water pressure

• To contain all necessary safety and operational controls and provide haet only

• To provide an instantaneous hot water supply

• To replace the feed and expansion cistern

What alternative central heating energy source could be offered to a customer if they lived in an area which had no access to natural gas?

• Oil

• Electricity

• Biomass

• LPG