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

Appliance clearances must follow the manufacturer's listed installation instructions, which are based on testing and listing by a recognized authority.

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

Purging accumulated gas and confirming no gas odor prevents ignition of a potentially explosive mixture.

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

Gas connectors for appliances must be listed for gas service and must remain accessible, not run inside walls or floors.

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

A manual shutoff valve must be located within 6 feet of each appliance and remain readily accessible to quickly cut off gas supply in an emergency.

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

ANSI Z21.69/CSA 6.16 requires listed flexible connectors for gas ranges, limited to 6 feet in length.

G3 - Gas Technician Level 3 Certification Practice Test

G3 - Gas Technician Level 3 Certification Practice Test

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