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Sharing oil lines

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Servicewiz_3
Servicewiz_3 Member Posts: 56
A while ago, I had received a drawing on how to share oil lines on (2) 2pipe burners. Could I get that drawing? Thanks

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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,526
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    You should not share oil lines on a two pipe system if there is any lift in the piping system (oil level below the level of the burner pumps). If the oil level is above the burner pumps you can share oil lines in most cases.

    If the lines are shared with the oil level below the pumps the burners will fight each other for oil. And check valves will not fix this.

    You can use two suction lines and a common return line with two burners
    EdTheHeaterMan
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,506
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    Suntec, or Webster's website has instructions, and piping diagrams.
    What are the particulars of the job.
    Depending on that, most residential setups you can do one pipe, to each burner. Avoid return lines, skip Tiger Loop if you can.
    steve
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 7,838
    edited February 2023
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    https://www.websterfuelpumps.com/pump_docs/LL4640.pdf. Sharing oil lines starts on page 4
    Suntec does not recommend sharing fuel lines with multiple pumps (burners). http://www.etscompany.com/suntec_pdf/Installation and Service Manual - Section III.pdf in this booklet starting on page III-10 there is a section called
    SERVICING NON-RECOMMENDED
    EXISTING INSTALLATIONS

    that gives you recommendations for pipe sizing.


    Further on page III-11 it covers two pipe installations.
    Edward F Young. Retired HVAC ContractorSpecialized in Residential Oil Burner and Hydronics
  • Big Ed_4
    Big Ed_4 Member Posts: 2,785
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    If the tank is lower on a one pipe system , I would use one tiger loop on the hot water heater just to keep the line primed all year long . They takes out the guess work out of the equation ...
    I have enough experience to know , that I dont know it all