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Q: How long could gas enter a heat exchanger if a pilot light were to go out during burner operation of gas furnace with a thermocouple pilot safety?
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Would a pilot light on a gas furnace still work with a defective thermocouple?

Pilot light would work but the main burner would not as the thermocouple proves that there is a pilot light to fire. The main gas valve would not open


How do you detect a crack heat exchanger in a furnace?

The most comon way to detect a crack in a heat exchanger is with a visual inspection, removal of the burner assembly and the use of a mirror and flash light. Or a smoke bomb test. A special little smoke bomb is placed in the burner area with the burners OFF. The blower is runnig and you light the smoke bomb, the smoke will draft up the flue vent or if a crack or rust hole is present then the smoke will get sucked into the air stream and come out of the duct work. Other than that using a carbon monoxide detector to see what the CO levels of the furnace are and comparing them to the supply air of the furnace to verify that there is no CO present in the air stream. The best and most accurate way is to contact a local Heating and Air Conditioning specialist or your local gas company should come out and perform a CO test on the furnace. Good Luck and God BLess


What are the differences between boilers and burners?

A burner is the part of the boiler that creates and controls the flame that heats the water. If you meant difference between a boiler and a furnace, a boiler makes hot water and a furnace makes hot air.


What is air blast burner?

An air blast burner is a burner where a controlled blast of air is supplied the gas. The burner has an air blast type fuel injector.


How does an oil burner work?

Oil burner magic!!

Related questions

Can the fan timer control board on a York furnace cause the furnace to continue running with the burner in operation?

yes it can fan


Would a pilot light on a gas furnace still work with a defective thermocouple?

Pilot light would work but the main burner would not as the thermocouple proves that there is a pilot light to fire. The main gas valve would not open


Can an oil furnace be converted to propane?

I have never heard of a way to do this without changing the whole furnace. Propane furnaces are usually thin steal walled heat exchangers with many burners. Oil Furnaces have a large burner chamber and then a small heat exchanger above it. If there is a way, you will need to change the heat exchanger and all electrical components. It may be cheaper in the end to just change the whole furnace.


How does a cooker flame safety device work?

It stops the gas supply to the burner when there is no flame sensed by the thermocouple inside the burner.


How big is a flame on a natural gas furnace?

The pilot flame is/should be about 1.5" long, the diameter of a pencil. When the burners are going, the gas is shot into the burner manifold, and the gas sent to the burner is designed to go to the back of the heat exchanger. So, in a typical 80,000 input heater, about 14"-18" long.


Does the thermocouple prevent gas from spraying in the burner?

Yes, when the pilot light is not lit. No spray.


Why is it important to prove the pilot flame is lit on a gas furnace before turning on the main gas burner?

The pilot has a thermocouple that generates an electric current when heated to hold open the control valve. If it is not hot enough there won't be enough current and the control valve won't stay open. Thus, gas will not flow to the burner.


How do you replace thermocouple on Sears hot water heater?

Depends on the age of the heater. If you light the pilot with a match, you should be able to remove the thermocouple with the burner in place. The end that is in the flame will pull out of the clip that holds it. The control valve end unscrews. If you have a newer one that lights the pilot with a sparker, you have to remove the burner as a unit. There should be two screws holding the cover plate in place, the gas line to the burner, the thermocouple and the wire for the sparker. Disconnect all of these from the control valve and the unit slides out through the hole. Then change the thermocouple and replace.


What is the correct oil burner nozzle on a ABC model P-712?

That depends on what the burner is installed in. One particular burner can be used on a multitude of boilers/furnaces simply by changing the nozzle to regulate both gph and flame pattern to suit the application. Contact the boiler/furnace mfr or check the installation/operation manual for the boiler/furnace for help. Lastly if that is of no help or not possible a good oil burner mechanic could help you out once he sees your entire application.


What is a synonym for incinerator?

Furnace, boiler, burner, cinerarium, cinerator, crematory, heater, heating system, oil burner, pyre


What kind of machine converts chemical energy to thermal energy?

A furnace or a burner.


What causes a gas hot water pilot lite to go out?

No, that is part of the function of the pilot light. To light the burner and to keep the gas valve open. The thermocouple sits in the flame of the pilot and produces a small electrical current that keep the gas valve open. When the tank cools down, the thermostat opens the valve to the burner so that it can light. When the pilot goes out, it is usually the thermocouple that is bad.