Central Heating Quiz phase 2 1.4/3

What is the purpose of a pressure relief valve?

• To discharge water from the heating system

• To prevent corrosion in the central heating system

• To regulate the flow of water in the boiler

• To increase the pressure in the central heating system

What is the function of metallic expansion joints in central heating systems?

• To absorb dimensional and length changes in the pipework

• To filter out sediment and sludge in the system

• To regulate the temperature of the central heating water

• To increase the pressure in the central heating system

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

• To accommodate the expansion of water when heated

• To regulate the flow of water in the boiler

• To prevent corrosion in the central heating system

• To increase the pressure in the central heating system

What is the purpose of an automatic bypass valve in a central heating system?

• To prevent the boiler from overheating

• To discharge water from the heating system

• To filter out sediment and sludge in the system

• To regulate the temperature of the central heating water

What is the main function of a magnetic corrosion central heating filter?

• To remove metallic sediment from the central heating system

• To regulate the flow of water in the boiler

• To prevent corrosion in the central heating system

• To increase the pressure in the central heating system

Where should the pressure relief valve be positioned in a central heating system?

• Close to the boiler

• On the flow pipe

• On the return pipe

• On the suction side of the pump

What type of expansion joint is commonly used in central heating systems?

• Expansion bellows

• Flexible joints

• Magnetic corrosion filters

• Automatic bypass valves

What material is the membrane of an expansion vessel made of?

• Neoprene rubber

• Metallic alloy

• Copper

• PVC

When does the automatic bypass valve open in a central heating system?

• When all zone valves and thermostatic radiator valves are closed

• When the boiler is turned on

• When the system is low on water

• When the pump is not working