Worksheetspp1 central heating 1.4
Total questions: 10
Worksheet time: 5mins
Which document gives advice on how to satisfy the requirements of L1a and L1b regarding the design efficiency of domestic CH systems?
BS EN 442
BS EN 12828
Manufacturers’ instructions
Domestic Heating Compliance Guide (DHCG)
What is the main purpose of central heating?
To provide cooling in every room
To provide lighting in every room
To provide ventilation in every room
To provide thermal comfort within a property
Which type of heating uses an ‘indirect’ gas-fired heater to warm air circulated by a fan through ductwork under the floor?
Warm air heating
Electric storage heaters
Wet central heating
Air source heat pumps
When the outside temperature is −1⁰C, what type of central heating allows all rooms in a property to be heated at the same time to a specific temperature set by the customer?
Full central heating
Background central heating
Pumped heating with gravity hot water
Selective central heating
What type of system is installed mainly on a cost basis and uses a smaller boiler or heat emitters to only take the chill out of the rooms and heat the rooms to a lower temperature?
Sealed, pressurised systems
Pumped heating with gravity hot water
Background central heating
Fully pumped system
What has central heating been replaced with over the past 10 years?
Open fire in each room
Gravity hot water system
heat pumps
Electric storage heaters
What will the customer be mindful of when considering a central heating system?
Maintenance
Running costs
Efficiency
All of the above
What type of modern domestic central heating system is fed from a feed-and-expansion cistern located at high level?
Sealed, pressurised systems
Low-pressure, open-vented systems
Fully pumped system
Pumped heating with gravity hot water
What type of modern domestic central heating system is fed directly from the mains cold water and incorporates an expansion vessel to take up the expansion of the heated water?
Low-pressure, open-vented systems
Sealed, pressurised systems
Fully pumped system
Pumped heating with gravity hot water
What type of system is a more modern unvented or combination boiler system?
Pumped heating with gravity hot water
Fully pumped system
Low-pressure, open-vented systems
Sealed, pressurised systems
