Central Heating

Which of the following is a disadvantage of the C plan two-pipe semi-gravity system?

• Full control on heating and hot water

• Two-pipe system is quicker to heat up

• Not fully pumped

• Compliant to Building Regulations L1b

Boilers fitted to the C plan two-pipe semi-gravity system tend to be ______ efficiency.

• lower

• higher

• maximum

• optimum

What do fully pumped systems use to circulate heated water around the hot water and heating circuits?

• Gravity

• Pump

• Fan

• Compressor

Which of the following is NOT used to control fully pumped systems?

• Cylinder thermostat

• Room thermostat

• Programmer

• Radiator

Fully pumped systems can be controlled by installing a cylinder thermostat, room thermostat, and _________

• programmer

• radiator

• boiler

• valve

Which of the following valves can be used in fully pumped systems?

• One-way valve

• Two zone valves

• Ball valve

• Check valve

A pumped central heating only system is generally a ________ system.

• One-pipe

• Two-pipe

• Three-pipe

• Four-pipe

Look at the diagram of the pumped central heating system. What is the name of the component labeled at the top left, which stores water and allows for expansion?

• Feed and expansion cistern.

• Boiler.

• Radiator.

• Circulating pump.

In the diagram of the pumped central heating system, what is the function of the room thermostat?

• To circulate water

• To control room temperature

• To heat water

• To store water

In the diagram, which component is responsible for heating the water in the pumped central heating system?

• Boiler

• Radiator

• Pump

• Thermostat