Hot Water Systems Quiz L3P2U5,1.2

What is an advantage of open vented direct hot water storage systems?

• Requires more safety controls than other hot water systems

• Less risk of water hammer and reverberation noise

• Quicker hot water heating times

• Can be used with central heating systems

What is a disadvantage of open vented direct hot water storage systems?

• Cisterns and hot water cylinder use a lot of storage space in the roof and airing cupboard

• A large amount of water storage is needed

• Greater risk of frost damage of pipework and cisterns in the roof space

• Immersion heaters can be expensive to run

What is an advantage of open vented indirect hot water storage systems?

• Requires more safety controls than other hot water systems

• Can be used with sealed heating systems eliminating the F&E cistern

• Low pressure system is quiet in operation

• More structural support required to carry the weight of the cisterns/cylinder when full of water

What is a disadvantage of open vented indirect hot water storage systems?

• More pipework required, so the system is expensive to install

• Cannot be used with solid fuel heating

• A large amount of water storage is needed

• Greater risk of frost damage of pipework and cisterns in the roof space

What is an advantage of unvented hot water storage systems?

• High pressure and flow rate of hot water at all outlets

• Requires more safety controls than other hot water systems

• Requires extra pipework for discharge pipework system

• Requires regular maintenance

What is a disadvantage of unvented hot water storage systems?

• Hot Water storage cylinders are expensive

• Storage cylinders are heavy and require structural support when fitted in a roof space

• Potential for water temperature to exceed 100oC

• Can cause explosion if fitted incorrectly

What is an advantage of thermal store hot water systems?

• Less hot water pipework required compared with storage hot water systems

• Requires regular maintenance

• Not suitable for domestic properties where more than one bathroom is installed

• High pressure and flow rate of hot water at all outlets

What is a disadvantage of thermal store hot water systems?

• Flow rate can be poor with older combi types

• Hot Water storage cylinders are expensive

• Storage cylinders are heavy and require structural support when fitted in a roof space

• Requires regular maintenance

What is an advantage of multipoint water heaters?

• Although classed as multipoint heaters, most types will only allow one tap to be open at once

• Less risk of frost damage

• Requires regular maintenance

• Smaller hot water pipework sizes can be used in some instances

What is a disadvantage of multipoint water heaters?

• Requires regular maintenance

• Although classed as multipoint heaters, most types will only allow one tap to be open at once

• Requires extra condensate pipework, which is vulnerable to freezing in cold weather

• Flow rate can be poor