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Is my steam boiler way oversized?
I just made it through my first winter **glad it was the worst I've seen in nearly 2 decades** in an old house with steam heat. Although I love the heat from my steam radiators, I hate my oil bill. ;) This got me researching steam heat leading to this site and Dan's books. The house is a large historic home with 25 radiators with a 2-year old Burnham V908 supposedly rated at 1,000,000 BTUs an hour. After fixing several return leaks that were causing it to short cycle and feed water, and some work by some good steam pros I found here, it's now only short-cycling due to pressure...a lot! I measured all the rads for square feet of EDR, and found my total to be 1,443.3 for the entire house. If I'm doing this correctly, I multiply that by the 240 BTUs/sq ft of EDR giving me a required boiler size of 346,392 BTUs. Do I then need to multiply that by the 1.33 pickup factor for steam bumping that size up to 460,701 BTUs? I'm trying to get an idea of how oversized I am and what options I have.
1) Am I right in the boiler size I need? 2) If so, am I pretty much looking at having to yank the 2 year old boiler and start over since it seems to be 2-3 times larger than it needs to be (if I'm figuring this correctly)?3) Is there anything I can do that will lead to moderate efficiency despite the oversizing?
Any assistance is appreciated, and if you need more pics or information just let me know.
twice the boiler I need, short cycling, atrocious near boiler piping, excessive fuel consumption, water hammer throughout...you name it I got it in my system O_o
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