Heating Systems Quiz

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

• To control the direction of water flow in the system

• To prevent over-pressurisation of the system

• To regulate the flow of water in the system

• To increase the temperature of the water in the system

What is the main advantage of a combination boiler?

• It requires minimal maintenance

• It is suitable for large commercial properties

• It can supply hot water to multiple draw-off points simultaneously

• It provides instant hot water under mains pressure

What is the purpose of a double check valve in a sealed system?

• To prevent back siphonage of central heating water into mains water

• To regulate the temperature of the water in the system

• To increase the pressure of the water in the system

• To control the flow of water in the system

What is the minimum temperature required at the manifold for underfloor heating?

• 40ºC

• 75ºC

• 65ºC

• 55ºC

What is the purpose of a warm air unit in a heating system?

• To deliver warmed air into various rooms

• To regulate the pressure of the water in the system

• To increase the temperature of the water in the system

• To control the flow of water in the system

What is the main advantage of district heating?

• It is not flexible in terms of multiple site options

• It is suitable for small residential properties

• It provides heat to a number of buildings using a network of pre-insulated pipes

• It requires high installation and operating costs

What is the main advantage of electric storage heaters?

• They are not suitable for off-peak tariffs

• They require frequent maintenance

• They are suitable for large commercial properties

• They charge up at night when electrical energy is available at low cost

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

• To allow the system to be filled under mains pressure

• To control the flow of water in the system

• To regulate the temperature of the water in the system

• To increase the pressure of the water in the system

What is the main limitation of a combination boiler?

• It is suitable for large commercial properties

• It has a rapid response from cold

• It provides hot water and central heating simultaneously

• It only supplies DHW to one draw-off point at any one time

What is the purpose of a mixing valve in underfloor heating?

• To deliver warmed air into various rooms

• To regulate the water temperature to ensure the floor does not reach too high a temperature

• To control the flow of water in the system

• To increase the pressure of the water in the system