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Posted by Joe Brix on February 09, 2005 at 21:40:39:
In Reply to: Weiss Boiler Efficiency posted by Bob T. on February 08, 2005 at 16:33:13:
Is that 115K input or net output? With a modern burner, the boiler might be in the high 70%'s efficency range, Without: as bad as 50%, You should have a heat loss calc done for the house.
Another rough estimate would be to add up the feet of baseboard. Figure 600 BTU per foot @ 180° water @ 4 GPM flow. Big issue is if you have 80 to 100 AMPS of 220 volt power available just for the boiler?