Plumbing level 2 - PP1.1 Central Heating

What is the main purpose of central heating?

• To provide thermal comfort within a property

• To increase property value

• To improve air quality

• To reduce electricity consumption

Which system allows all rooms in a property to be heated at the same time to a specific temperature?

• Background central heating

• Pumped central heating

• Selective central heating

• Full central heating

What type of system is fed from a feed and expansion cistern located at high level?

• Fully pumped systems

• Low pressure, open vented systems

• Gravity hot water system

• Sealed, pressurised systems

Which of the following is NOT compliant with Building Regulations part L?

• Fully pumped systems

• C plan two pipe semi gravity

• Two pipe semi gravity

• One pipe gravity system

What is a drawback of a one pipe gravity system?

• Requires a large boiler

• Each radiator progressively cools down

• Expensive to install

• Difficult to maintain

Which system uses a three port mid-position valve?

• Fully pumped two, two port valves – S plan system

• One pipe gravity system

• Fully pumped mid-position valve – Y plan system

• Two pipe semi gravity with heat sink

What is the main cause of corrosion within a central heating system?

• High water pressure

• Aeration

• Low water temperature

• Excessive use of inhibitors

Which system is described as having gravity circulation to the hot water circuit but pumped circulation to the heating circuit?

• Fully pumped systems

• C plan two pipe semi gravity

• Two pipe semi gravity

• One pipe gravity system

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

• To increase water pressure

• To prevent water leakage

• To allow water to flow through the boiler when circuits close down

• To reduce noise in the system

Which system is compliant with Building Regulations part L1b?

• Two pipe semi gravity

• Fully pumped systems

• One pipe gravity system

• C plan two pipe semi gravity