Unit 31 Exam - Gas Heating

Front

What components make up the heat-producing system of a gas-fired, forced-hot-air furnace?

Back

Manifold controls, burners, heat exchanger, venting system

Front

What is the function of the blower in a heated-air distribution system?

Back

To move air throughout ductwork and ductwork assembly

Front

What is the characteristic of an upflow type furnace?

Back

Stands vertically; top air discharge

Front

Which type of furnace is described as being positioned on its side?

Back

Horizontal

Front

What is unique about the multipoise or multipositional type of furnace?

Back

Can be installed in any position

Front

How does a downflow type furnace discharge air?

Back

Bottom air discharge

Front

What is the primary component of natural gas as mentioned in the learning material?

Back

Methane

Front

Natural gas is described as being:

Back

Colorless and odorless

Front

Why are odorants added to natural gas?

Back

For detection purposes

Front

How much energy does natural gas produce when burned with air per cubic foot?

Back

1000 Btu