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Posted by HeatPro on September 13, 2010 at 12:56:20:
In Reply to: Meant to say converting from oil to gas ... posted by brian on September 13, 2010 at 04:50:02:
The quick and easy way to size the boiler is to pick the boiler that has just over the calculated radiation using the IBR rating numbers. The IBR rating numbers include piping and pickup allowances. It would probably be the EG 55.
A calculated heat loss would probably be less than 75,000 btuh.
http://heatpro.us/
Consider this an opportunity to convert to hot water, as the btuh requirements would be about half the fuel use compared to steam. The next years will see a further rise in fuel costs forcing more careful use of fuels.