Deck 10: Troubleshooting and Maintenance for Gas-Fired Equipment

Question 1

The flame in a gas fired furnace is burning with heavy yellow tips. What is the problem?

Answer 1

There is not enough primary air. Check the air shutter opening and for debris in the furnace.

Question 2

The dangerous by-product of poor combustion of gas is ______________________________.

Answer 2

carbon monoxide

Question 3

Why do propane and butane gas furnaces require 100% shut off in the event of pilot outage?

Answer 3

Propane and butane gas are heavier than air and can collect in low places.

Question 4

When a gas furnace ignites and is under "full-fire," why does the fan not come on immediately?

Question 5

If there is too much primary air, the gas flame can ____.

A) get blown out
B) "lift" off the burner rack
C) make noise
D) both b and c

Question 6

Spark ignition is important for roof top or package units located outdoors because of ____________________ problems.

Question 7

The proper color of a gas flame is ____.

A) sharp all blue
B) lazy all blue
C) blue with slight orange tips
D) lazy with yellow tips

Question 8

While the furnace is operating, heated air and flue products spill out of the burner compartment. What is the problem?

Question 9

When the burners ignite, the burner flame is normal until the blower starts. At this time, continuous roll out occurs. What is the problem?

Question 10

What is the difference between a yellow gas flame and an orange gas flame?