Plumbing level 2 - PP3.1 - Central Heating

What percentage of heat is convected via the fins in modern panel radiators?

• 85%

• 50%

• 90%

• 70%

Where should panel radiators be installed to ensure proper convection flow?

• In the center of the room

• Near windows

• Behind furniture

• Where obstructions will not interfere

What is the most common method to pipe radiators?

• TBOE: Top – Bottom – Same end

• TBSE: Top – Bottom – Same end

• BBOE: Bottom – Bottom – Opposite ends

• TBOE: Top – Bottom – Opposite ends

What is the least popular type of panel radiator?

• Rolled top

• Flat top

• Seam top

• Compact

What is a key disadvantage of skirting convectors?

• High component costs

• Takes longer to heat up a room

• High installation costs

• Dust can block the fins

What is the required minimum temperature at the manifold for underfloor heating?

• 55°C

• 50°C

• 60°C

• 65°C

Which type of radiator valve allows temperature control of a single radiator?

• Wheelhead valves

• Lock shield valves

• Manual valves

• Thermostatic radiator valves (TRVs)

What is the main advantage of underfloor heating?

• High installation costs

• Lower temperature for operation

• Not suitable for every situation

• Takes longer to heat up a room

What is the specification for radiators and convectors?

• BS EN 444

• BS EN 442

• BS EN 443

• BS EN 445

What is the purpose of a lock shield valve?

• To secure the valve stems

• To balance the system

• To turn the radiator on and off

• To control the temperature of a single radiator