G3 G3 - Gas Technician Level 3 Appliance Installation and Service Questions and Answers

Question 1

What is the minimum clearance from combustible materials typically required when installing a gas-fired forced-air furnace in the US?

Accepted Answer

Follow manufacturer's listed clearances

Answer

1 inch on all sides

Answer

6 inches on all sides

Answer

12 inches on the front only

Question 2

Before lighting a gas appliance pilot, a technician should first:

Accepted Answer

Check that the area is free of gas odor and purge any accumulated gas

Answer

Turn the gas valve to the pilot position immediately

Answer

Ignite the burner directly with a match

Answer

Close all supply valves fully

Question 3

When installing a gas dryer, the flexible connector between the dryer and the house piping must be:

Accepted Answer

Approved for gas use and not concealed inside walls

Answer

As long as possible to allow movement

Answer

Made of rubber tubing

Answer

Connected using compression fittings only

Question 4

Which type of valve must be installed within 6 feet of a gas appliance and be accessible for shutoff?

Accepted Answer

Manual shutoff valve

Answer

Pressure regulator

Answer

Check valve

Answer

Solenoid valve

Question 5

When connecting a gas range in the US, the appliance connector should be:

Accepted Answer

A listed flexible metal connector no longer than 6 feet

Answer

Hard-piped with black iron only

Answer

Any plastic tubing rated for gas

Answer

A rubber hose with clamp fittings

Question 6

A gas appliance that is 'listed' means it has been:

Accepted Answer

Evaluated and certified by a nationally recognized testing laboratory

Answer

Registered with the local utility company

Answer

Inspected by the installing technician

Answer

Approved verbally by the local authority having jurisdiction