Drain System for Air Handler

for a typical 92F db / 78F wb (Ft. Lauderdale), you can use 0.122gpm/ton of cooling, or for a 10 ton unit = .122 GPM

ok, thank you what about the column; it is correct to leave the difference in the siphon between the lower side and the pipe that goes in to the drain basin a difference in height similar to the static pressure of the air handler??

add an inch or two to the trap above the total static pressure.

thanks a lot

One last question the height of the trap equals total pressure plus one inch or two as you said??

yep.. that'll keep a bit of water in the trap

thank you