Question about Dayton (3E379) Heater

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Dayton 3e239e looking for operation manual

Need to light pilot light

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Normally you turn the gas valve to the pilot position, light the pilot, hold down the gas valve knob for 30-40 seconds and release. If the pilot will not stay lit replace the thermocouple. These are available ay Home Depot.

Ray

Posted on Dec 07, 2008

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I have a Dayton 3E290 wall heater that was installed new 30 years ago. The pilot light started to extinguish a few years ago. Gradually this began to occur more frequently. I've changed the...


The pilot assembly may need cleaned out and the orifice cleaned, also the gas valve may need to be replaced, to check for proper voltage from the thermocouple you need a flame source and it takes a meter that can register DC milliamps, and should be 350 to 750 millivolts. Heat the thermocouple with the pilot or other flame source and check, if OK, gas valve is weak.

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How to light pilot on Dayton furnace and then start furnace


If this is a standing pilot system, turn the gas valve to pilot position. push in the knob & hold while lighting pilot...keeping holding knob down for a minute... this will pick & hold the gas valve. Let go of the knob & see if the pilot stays lit, if it does, then turn the knob to on position & the furnace should start if there is a call for heat from the thermostat

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Is there a kit to change from propane to natural gas for a Daton model # 3e239e unit heater. I have talked to Graingers and they don't know and they say the unit has been discontinued. If there is can you...


Bill, the model number is good, but won't get anybody the part number of the gas valve. Basically, there are 2 issues to address, the pilot orifice size and the pressure regulator. Get the numbers off of the gas valve (OEM numbers, brand) (likely White-Rogers or Honeywell), and search via manufacturer for conversion kit. (Generally a spring and a pilot orifice). Should you locate a kit, be prepared to have someone properly adjust the manifold pressure once installed. Also, as the make things cheaper, sometimes they are built for one fuel or the other and sealed. You may end up buying a new gas valve. Being raised in a propane plant, I recall their skill-set far superior to general HVAC guys (like myself) in this arena. As propane conversions are a part of everyday life for them (temporarily making a furnace run on propane during construction and switching over once the gas line is hooked up), they are probably a good starting point!

Dec 03, 2010 | Dayton (3E379) Heater

1 Answer

Have dayton heater,model #4LX41A heater comes on,pilot lights but no gas ignition ? Already cleaned injectors, and made sure i have gas. Mike M.


try cleaning the thermocouple or even replacing it because if the thermocoulple doens't sense the pilot light then it won't open the gas valve.

Jan 24, 2010 | Dayton (4LX41) Heater

1 Answer

No ignition on dayton gas furnace. how hard is it to install new gas valve on a dayton furnace


not hard but before replacing check pilot light and thermocouple for proper function and setting if pilot light not in right position thermocouple wont open gas valve if electronic ignition check for power and proper gap on igniter also check stat for proper function

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1 Answer

I have Dayton space heater 3E 229, pilot wont stay on,I have install new gas operating valve and checked transformer ( 30V) . Pilot lights up but wont stay on even if I hold button down for 2-3 min. please...


The thermocouple is likely defective...(Copper wire heated by the pilot) or the pilot itself is too small or dirty....the pilot must be BLUE , not yellow like a candle...and it must envelop the top portion of the thermocouple....you could also have an auxiliary limit or ECO wired in series with the thermocouple circuit that could be open.....also make sure the thermocouple is inserted all the way and is in the pilot flame as mentioned above

Oct 25, 2009 | Dayton Gas Furnace Heater

1 Answer

Pilot light


Hi the thermocouple is a long copper wire that goes back to the gas valve from the pilot .

i would clean the flame senser first , then check the pressure switch jump this out , then check the fan control or snap disc jump this out see if it runs if you need A THERMOCOUPLE then honeywell universal will do

Apr 07, 2009 | Dayton (4LX41) Heater

1 Answer

Dayton Furnace - Pilot Light Goes Out but Fan keeps running?


Pilot lighted furnaces have a thermocouple made from disasimilar metals that when heated create electricity to actuate a relay that alows the gas to flow to the furnace.

When the thermocouple gets coated with carbon from the pilot lights constant burning it acts as an insulator and keeps the thermocouple from getting enough heat to generate electricity, a very good safety factor.

What you have to do is locate the thermocouple it should be located over the pilot light, you will see a gray substance around the thermocouple it will be hard like cement, take a knife and scrape away as much of the gray material as possible then sand the themocouple with a medium sandpaper until it shines, use one of you wifes emery boards, this should solve your problem.

Feb 24, 2009 | Dayton (4LX41) Heater

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