4/14/2021 0 Comments Ducane Furnace Manual Oil Pump
Incoming oil passes through the screen, through a pump, and at high pressure out to the oil burner.We have no relationship with advertisers, products, or services discussed at this website.We describe how to inspect, troubleshoot and repair heating systems to inform home owners, buyers, and home inspectors and students of heating service methods about common heating system defects.
There could be an air leak anywhere in the system including at the piping connections or at the Suntec fuel unit itself, such as at the removable cover that gives access to change out the fuel unit strainer. Start by tightening the four pump cover screws and checking tightening any connections in the oil line. Or have your service tech change out the strainer if it wasnt done at last service. Also look in the oil filter canister for water, rust, or sludge that might tell us the line is getting blocked. Had also applied compressed air pressure to the line and no sigh of leakage, but when bleeding the fuel line it takes nearly a gallon of pumped fuel to allow the furnace to run. My question refers to whether or not it is possible for an internal problem with the pump a Suntec A2VA-7116. From the volume of air in the system, and not know the pump internal configuration I am at wits end on this thing. But there could be a more-subtle problem such as installing a nozzle well out of range of the fuel unit (oil pump) or such as damaging the nozzle adapter or tubing so as to cause an obstruction. Perhaps you can be more specific about the damage or problem youre seeing with your fuel unit. Keep in mind that improper adjustment or leaks in the nozzle line piping anywhere on the outlet end of the fuel unit can also send oil into the blower base. By visual inspection you may see oil seepage around the seams of the Suntec pump cover. Wipe off the pump carefully and check again for oil leaks after its been running. By inspection or measurement of the oil burner flame, if the pump is drawing air then the flame will be improper, stumbling, rumbling If the seal about which you ask is at the fuel units drive shaft youll learn that by 3. Check - fuel in the tank - fuel lines open - oil filter - strainer screen in fuel unit and be prepared to replace both then - check the oil supply line vacuum level. Also even if the pump is on and you get oil (and perhaps no air) at the bleeder fitting, we dont know what pressure the pump is delivering - unless you instrument the pump output pressure or the input oil line vacuum. Turned on the boiler at 15.30 to-day after it ran successfully all day yesterday. Just tripped again after 9 mins. I was able to press the reset button after a few minutes and the boiler then fired. The system may well runn for six hours without a problem and then after a longish burn trip. It sounds as if perhaps something is overheating Dash possibly electric motor or there could be a coupling that heats up and slips between the motor and the fuel unit. The interval over which you describe the problem occurrence is so short that anyone surely will be willing to wait eight or ten minutes to observe the problem. Making a mistake could result in a leak, loss of heat, or worse, a building fire, injuries, or worse.
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