Help me understand my Manual J
My question is how to use this to ensure my equipment is sized correctly. I plan on using heat pumps to cool my house in the summer and heat my house down to 35-40 degrees. Once it's too cold for the heat pumps i plan on having back up propane furnaces kick in.
1st floor heating/cooling (hvac 1) is 43,393 btu and 2.1 ton
2nd floor heating/cooling (hvac 2) is 35,067 btu and 1.5 ton
How do I use the cooling tonnes to determine appropriate sizing of the heat pumps?
Also what size propane furnace would I get, would a variable furnace change anything? I'm guessing something like:
69,000/48,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 1,600 CFM Variable Speed Blower, Upflow/Horizontal Flow Application
46,000/32,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 1,200 CFM Variable Speed Blower, Upflow/Horizontal Flow Application
Am I on the right track?
Posted Fri, 12/06/2013 - 20:55
Edited Sat, 12/07/2013 - 05:13
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