Chimney and Flue Systems Quiz

What are the two operating principles of any chimney or flue system as described in the document?

• Remove solid waste and filter air

• Remove combustion products to the outside and draw in air for combustion

• Heat water and generate electricity

• Circulate warm air and cool the surroundings

What creates the pressure difference called 'up draught' in chimney or flue systems?

• The cooling of gases

• The electrical heating elements

• The rise of hot gases

• The mechanical fans

Which type of draught can be used to create the up draught in chimney or flue systems?

• Natural draught

• Forced draught

• Electrical draught

• Both A and B

What is the simplest design of flues described in the document?

• Closed flues

• Open flues

• Complex flues

• Sealed flues

How is air for combustion supplied in an appliance with an open flue?

• Through an electrical pump

• From an internal reservoir

• From the room and outside via a vent

• Through a sealed external tank

What is the primary difference between room sealed natural draught and room sealed fan assisted flues in terms of air and combustion product movement?

• Both use a fan to force air and combustion products out.

• Natural draught uses the building's air, while fan assisted uses external air.

• Natural draught and fan assisted both use internal air for combustion.

• Natural draught has both air and combustion products positioned outside, while fan assisted uses a fan to assist the process.

What makes room sealed appliances safer than open-flued appliances?

• They use internal air for combustion.

• They direct combustion products into the room.

• They draw air for combustion directly from outside.

• They are smaller and can be placed in many locations.

How does the flue size compare between room sealed natural draught and room sealed fan assisted flues?

• The flue size is larger in fan assisted flues.

• The flue size is the same in both types.

• The flue size is smaller in fan assisted flues.

• There is no flue used in fan assisted flues.