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What can cause flame rollout?

What can cause flame rollout?

How Does It Happen? Flame rollouts in gas furnaces and boilers are caused by a high concentration of combustion gases inside the combustion chamber. Normally, these inflammable gases are exhausted from the furnace through the flue passageways in the heat exchanger, then up the vent to the exterior of the home.

What does flame rollout mean?

Flame rollout occurs when burner flames exude from the normal combustion area of a gas boiler or furnace. Like furnaces, gas boilers incorporate a heat exchanger that accepts hot combustion gases produced by the burner, then transfers heat to the water.

What causes water heater fires?

The leading cause of gas water heater fires is when they leak flammable vapors into the room surrounding the equipment. If this gas leakage goes on for a long enough time, a dangerous amount of gas can collect and pool near the water heater or other nearby electrical devices.

Why is my water heater flame so high?

If the burner flame floats, lifts off the burner ports, or the flame is too high, burner orifice is too large so you have to replace it with the correct size. Gas pressure might also be too high or the flue duct and the venting system is blocked.

Should there always be a flame in the water heater?

The pilot should always be burning on your water heater. The pilot should always be burning on your water heater. Sometimes the pilot flame is hard to see through the viewing window. To be sure if the pilot is on or off, you need to remove the access door and shield and look at the burner and pilot through the opening.

What should a water heater flame look like?

Blue – Gas burners burn blue if the ratio of fuel to air is correct. Orange – Orange flame is usually dust or dirt being burnt. Yellow – Air is not getting to the flame, this needs to be inspected immediately.

What causes a flame rollout in a gas furnace?

In normal operation, all burner flame action should be restricted to the combustion chamber and should appear as a clean, blue flame emitted by the burner jets. How Does It Happen? Flame rollouts in gas furnaces and boilers are caused by a high concentration of combustion gases inside the combustion chamber.

Why does my water heater keep lighting up?

Symptoms: Your water heater might make several attempts to ignite and a flame lights up but then the system shuts the gas off and then makes another attempt. A dirty flame sensor makes the water heater think there is no flame and so it shuts the gas off and vents it out.

What causes the Blue Flame on a cast iron water heater?

The manually adjustable air shutter is usually found on the cast iron burners, while the steel burners utilize the self-adjusting air mixture. The leading indicators of the proper gas combustion are the stable blue flame or blue flame with the yellow inner cones (see the picture).

What should I do if my water heater flame is not working?

If the venting system is blocked, clean it and make sure that air and flue passageways are free of deposits and debris. If the problem is with the high gas pressure, call the utility company. One possibility is water in the gas line due to pipe corrosion. If the problem is with the cold or excess draft, find the cause and fix the problem.