Question about SySTOR Systems (400S52) Burner

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Furnace rumbles when it turns on

We filled the tank, had the furnace turned off for a few hours and when we relite the furnace it wouldn't light, changed the nozzle and it works but rumbles. what is the setting for a miller gun furnace electrode?
and what nozzle do you recomend?

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Varies from burner to burner to burner , should replace with the same as you removed , the numbers are very important on the nozzle one of the numbers is the degree of the fire pattern the nozzle produces ex. a 90 degree or 80 degree etc . this is determined by the way the fire box in the furnace is insulated . the other number is gallons per hour of oil the furnace is set up to use , ex. .70 gph or .80 gph all of these numbers are critical and should not be changed except by an expert or you could damage your furnace and could possibly be dangerous . the numbers will be on your old nozzle and should go back with same one , as to the adjustment , they also vary ,but i can give you one that will usually work for most furnaces , that is one eighth inch space between electrode tips , five eights in front of nozzle port opening , and one half inch above center of nozzle center , where the hole is . bleed all air out of system after installing nozzle , let me know if no fix have more ideas

Posted on Jan 01, 2009

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Posted on Jan 02, 2017

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