Key Points

Question 0

A draft system is a boiler system that regulates the flow of air to and from the burner

Answer 0

True

Question 1

Draft is the flow of air or gases of combustion caused by a difference in pressure between two points

Answer 1

True

Question 2

Natural draft is draft produced by the natural action resulting from temperature difference between air and gases of combustion

Answer 2

True

Question 3

Mechanical draft is draft produced using a mechanical device such as a fan or blower

Answer 3

True

Question 4

A manometer is a device that measures draft by comparing pressure at two locations

Answer 4

True

Question 5

Draft measured is expressed in inches of water column

Answer 5

True

Question 6

Different control are required for regulating draft in fuel oil or gas boilers and in stokers

Answer 6

True

Question 7

The words “stack” and “chimney” are often used interchangeably for the structures used to direct the flow of gases of combustion from the boiler to the atmosphere

Answer 7

True

Question 8

Stack condensation in conventional boilers is most likely to occur in heating boilers installation where light loads and intermittent firing cause a cool stack condition

Answer 8

True