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Posted by hawgeye on February 2, 2007, 5:28 pm
"PeleSajan" wrote...
>I recently put a two story addition on my house and the city is
> requiring me to fill out a Manual J worksheet. I hired a guy to do
> all the duct work and hook-up to my furance. I also asked him to fill
> out a Manual J worksheet. Unfortunately, he did not complete it right
> and the city has rejected it. Does anyone know how to do these
> calculations:
Yes! How much does it pay?
Really, I hope you didn't pay him much. If he couldn't do the calcs, how do
you know that the furnace will handle the load and that the ducts are sized
right?
> 1. Htg Load (Btuh)
> 2. Clg Load (Btuh)
> 3. Htg AVF (cfm)
> 4. Clg AVF (cfm)
>
> I have the square footage of each room in the house. I have the form
> in Excel if anyone wants me to email it to them. Any direction would
> help. Thank you so much in advance for your advice.
You need to know more than the sq. ft. of the rooms. You need to know the
heat loss/gain of the house/rooms amongst other things.
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