I seem to remember that a damper was installed prior to installation of the furnace in 1999. The thing that concerns me is that the system doesn't have a barometric damper installed. I have done my normal yearly maintenance on the systems: cleaned points, replaced nozzles, changed air filters on furnace, changed oil filter on oil tank, etc. With the hot water heater operating and the furnace them coming on (operating), I have felt the draft of the operating furnace through the inlet baffles of the hot water burner. I them shut off power to the furnace and reset the hot water heater which then runs normal (shuts off at proper hot water temperature). However, if the hot water heater is running and the furnace starts to run, the hot water heater trips off. The hot water heater works fine and is normal. The furnace operation is normal and works fine. I have never had the below described problem until this year (in the last month). a hot water heater using the same exhaust stack as an oil fired furnace. Under the chimney draft section, of the above article, it states that the draft can increase due to a second appliance using the same chimney as the heater eg. The furnace was replaced with a new one in 1999 and a new (same size as old heater 32 gallons) hot water heater was installed in 2016.īoth the furnace and the hot water heater exhaust through the same exhaust stack. The 1969 built house utilizes an oil fired furnace and an oil fired hot water heater. Question: I have lived in my Connecticut home for over 40 years.
Your heating service technician on to be able to determine what's going on. There could also be a problem with backdrafting that's tripping of a spill switch. In fact it is impossible to correctly tune both heating appliances and let each has its own barometric damper.īut I don't know that that's what's wrong with your heating system. On by (mod) - each appliance needs its own barometric damper I'll let you know what the technician determines. The service technical also stated that the line/lines should be replaced next Summer when weather is warmer. The technician then changed the shut off valve on the hot water burner and then blew the line from the burners to the oil tank using a cartridge type high pressure air source.įor the past three days (since the technician accomplished the above), the furnace and hot water burners have been normal: problem solved.Īlso for information, the service technician stated that each individual burner should each have an individual fuel line (tee off at the oil tank filter). This the technician was due to a partially plugged fuel line. The service technician came to the house three days ago.Īlthough not noted below, it is noted that a single fuel line (from the inhouse oil tank to the burners is about 35 feet in length) serves both the furnace burner (1.25 GPH)and the hot water burner (.75 GPH).Īfter experimenting and repeating the below described hot water burner tripping out, the technician thought that when the furnace burner came on it was starving the hot water burner of fuel. In the course of doing that, we also went to a larger-diameter oil line which made a significant Improvement in the system.įollowed up on the below problem. Indeed in situations such as you described I have replaced the oil lines. It sounds as if you had an excellent service technician on site. Thank you for the very helpful follow up about the oil burner operating problems being solved by discovering that the oil flow was not adequate. On by (mod) - oil burner was starved for fuel These questions & answers about draft regulators were posted originally at DRAFT REGULATOR, DAMPER, BOOSTER - please be sure to read the diagnosis, repair or installation advice givent there. Guide to Inspecting Barometric Dampers or Draft Regulators on Oil Fired Heaters, Furnaces, Boilers, Water Heaters We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Here we explain the inspection and adjustment of draft regulators or barometric dampers on oil fired heating equipment:Ī Guide to Barometric Dampers on Oil Fired Boilers, Furnaces, Water Heaters: inspection, adjustment, cleaning, troubleshooting. We have no relationship with advertisers, products, or services discussed at this website.ĭraft regulators / barometric dampers on oil fired heating equipment: InspectAPedia tolerates no conflicts of interest.
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