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What is the minimum temperature required at the manifold for underfloor heating when using a boiler?

• 55°C

• 65°C

• 40°C

• 70°C

What temperature can be used via a ground source heat pump for underfloor heating?

• 55°C

• 65°C

• 40°C

• 70°C

Which of the following is NOT a benefit of underfloor heating mentioned in the text?

• Economy

• Flexibility

• High maintenance

• Comfort

What is the purpose of the insulated bed in underfloor heating systems?

• To increase heat loss downwards

• To prevent heat loss downwards and ensure maximum heat projection upwards

• To support the weight of the concrete screed

• To provide electrical insulation

How are the pipes usually installed in an underfloor heating system?

• 50–75mm apart across the floor of the room

• 100–150mm apart across the floor of the room

• 150–225mm apart across the floor of the room

• 250–300mm apart across the floor of the room

What is the method used to cover the pipework in underfloor heating systems?

• It is covered with wooden planks

• It is screeded over with concrete or installed in suspended floors

• It is left exposed for better heat emission

• It is covered with thermal insulation only

What percentage of the heat emission from underfloor heating is in the form of radiation?

• 20-30%

• 40-50%

• 50-60%

• 70-80%

Compared to traditional wet systems with radiators, underfloor heating provides a more comfortable temperature at what room levels?

• High room levels

• Medium room levels

• Low room levels

• All room levels equally

How does underfloor heating release heat into the room?

• By cooling the floor surface

• By radiating heat from the floor surface

• By conducting heat through the ceiling

• By using convected heat from radiators

What is the role of the floor structure in an underfloor heating system?

• It acts as a barrier to heat

• It cools the room by absorbing heat

• It acts as a large storage heater

• It has no role in the heating process