computing air-volume : is "boiler room" big enough?

Unknown

i should quit responding 2u

but remember when u posted about the sailboat, u ended up asuuming that u & icesailor? knew the answer WHICH WAS NEVER POSTED! now u bring NOTHING to the table AGAIN so why bother?

icesailor

Speed:

Your answer wasn't correct and I'm not getting into it with you.

Mac_R

Air volume calc

you need 50 cubic feet of air per 1,000BTU input into the appliance.  If you are fired at .75GPH then you need 5,250 Cubic feet of air per hour. 

140,000 Btus in a gallon of oil.  140,000 - 25%= 105,000 / 1,000=105 * 50= 5,250.  That way you have enough fudge in your calc to overcome the 20% swing in nozzle sizing.  the calc is the same for gas.  Field Controls makes a good outside air kit for most burners.  all you need to do is follow their instructions and you should be fine.