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Posted by steve on December 11, 2007 at 19:58:11:
While I still am pondering the water conversion, I am at the moment leaning toward just replacing the steam boiler for the simplicity and cost savings now.
I am getting varying sizes from different plumbers. I sized the house using EDR*240 for the radiators and used a new convector table to estimate the EDR of the steel convectors. I got 177,000 BTU/h. As I understand one then uses a piping factor of 1.33 or matched that 177 number to the boiler net rating. Is that correct? How does the sq ft of steam factor in because some boilers make much more steam than others. At the moment for oil one plumber is pushing Utica Starfire but I am partial toward the Megasteam because of the efficiency and because the old Burnhum lasted 90+ years.
What do I look for to be sure I am sized adequately without going to big and throwing money to the wind. Can some oil boilers be more easily converted to gas later? Is a Riello burner the way to go in all cases?
How does one factor in how am optional burner affects boiler performance?
Gas is another story I haven't yet analyzed as much.
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