Central Heating Quiz

Why should full gravity systems no longer be installed?

• They are too expensive

• They are outdated

• They are too small

• They are too complex

What type of pipework is used in full gravity systems?

• Small-diameter pipework

• Medium-diameter pipework

• Large-diameter pipework

• Flexible pipework

Where might you still find full gravity systems?

• In new buildings

• In older properties

• In commercial buildings

• In industrial plants

What happens to the pipework in full gravity systems?

• It rises from the heat source

• It falls from the heat source

• It remains level

• It is buried underground

What type of hot water cylinders are described as old and rarely seen now?

• Double feed

• Single feed or Primatic

• Electric

• Solar

What type of system is a single feed or Primatic hot water cylinder?

• Pumped system

• Gravity only system

• Electric system

• Solar system

What happens if you try to convert a single feed or Primatic system to pumped?

• It becomes more efficient

• It will work perfectly

• The air lock will be lost

• It will save energy

What temperature drop is achieved over the system in a one-pipe gravity system?

• 5ºC

• 10ºC

• 15ºC

• 20ºC

Which component in the one-pipe gravity system is responsible for circulating the water?

• Boiler

• Time clock

• Central heating circulating pump

• Feed and expansion cistern

What is the diameter of the primary flow pipe in the one-pipe gravity system?

• 15mm

• 22mm

• 28mm

• 35mm