Its not the P-Trap. Traps are required when the coil is on the negative pressure side, yours is positive pressure. All the trap will do is close a 3/4" hole from spilling air.
Assuming the static pr… (View Post)
Avoid a pump at all costs but if you have to.
Wire in the safety to cut the compressor let the fan run so you know theirs a problem.
Keep a spare pump up there. Saves a trip on a weekend.
run the t… (View Post)