Cold Water Systems Quiz L3P2 U5,2.3

What is the usual size of the rising main for a small property using the direct cold water system?

• 25mm

• 20mm

• 15mm

• 10mm

What size of rising main is required when an unvented hot water storage system is installed in a property?

• 18mm

• 15mm

• 28mm

• 22mm

When both cold and hot water systems are supplied direct from a mains cold water supply, what effect will this have on the rising main we install?

• It decreases the pipe size because of the reduced flow rate

• It causes the pipe to burst

• It has no effect on the pipe size

• It increases the pipe size because of the increased flow rate

Generally speaking, what size pipe is required supplying a bathroom installation on an indirect cold water system?

• 10mm

• 15mm

• 20mm

• 22mm

What is the name of the pipe that supplies the appliances in an indirect cold water system?

• Distribution pipework

• Rising main

• Hot water storage vessel

• Cold feed cistern

What is the minimum size of the cold water rising main for an unvented hot water storage system?

• 15mm

• 18mm

• 22mm

• 28mm

Where is the cold feed cistern usually positioned in an indirect cold water system?

• In the bathroom

• In the roof space

• In the utility room

• In the kitchen

What is the purpose of the cold water storage cisterns in an indirect cold water system?

• To supply hot water to the household

• To prevent freezing of the pipes

• To increase the water pressure

• To store cold water for the system

What is the minimum size of the cold distribution pipework in an indirect cold water system?

• 22mm

• 18mm

• 15mm

• 28mm

What is the purpose of the indirect cold water system?

• To store cold water for the system

• To increase the water pressure

• To compensate for low cold water supply pressure

• To supply hot water to the household