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Hartford loop ?

Hi,I have a steam / No.2 oil heating system, there are 17 radiators in the house (5 on the 3rd floor-5 on the 2nd and 7 on the 1st.) All are 1 pipe except for 2 radiators on the first floor, which are 2 pipe and one of those a is a baseboard?
Is this normal also how can I tell if it is a Hartford loop? Thanks for any help, Rob


  • ethicalpaul
    ethicalpaul Member Posts: 5,723
    The hartford loop is just a small section of riser pipe about a couple feet tall next to the boiler on the return line that prevents a return line leak from draining your boiler into the basement.

    Is that what you are asking about, or maybe a different thing?
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
  • heatinghelpfor3
    heatinghelpfor3 Member Posts: 17
    Thanks for your reply, I’ll try and get an image and upload it to get a better idea.