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BTU size of new natural gas boiler

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Don10000
Don10000 Member Posts: 21
in Gas Heating
Looking for the correct BTU size for a new Gas boiler.
Converting from oil to natural gas boiler – Steam heat.
There are a total of 12 copper convector radiators. Single pipe steam radiators.
I measured the length of each of the 12 convector radiators.
The lengths are 57, 37, 17, 30, 29, 33, 45, 38, 57, 57, 46, 17 = a total of 463 inches of length.
Each copper convector is 2” in height and 5.75” in depth.
9 convectors have 3 copper tubes running lengthwise
3 convectors have 4 copper tubes running lengthwise



Thank You!

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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,524
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    Your going to have to try and get the EDR ratings off all those convectors. Any names or markings on them? Or on any of the enclosures?

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