Am I reading your statement incorrectly or are your two last sentences contradicting each other?
I probably typed it wrong. What I I mean is thinking all drains have to be ran to gutter or roof drain is absurd. However if you want to do that there is nothing wrong with that, well except maybe getting a slum lord to pay for it.
You must be getting old. I do the electric slide through condensate slime. It helps me go unit to unit faster to tape up capacitors, jam cig butts in contactors, and check suction lines for beer can cold while simultaneously unhooking economizers.
I've never done that "cigarette butts jammed in contactors" thing. Can you elaborate on that? I might learn a new trick today...
That trap has been reused. Either the roofer did it, or the unit has been replaced and the "installer" used the old trap.
Look at the tar stripe on the bottom of the P... this trap was installed properly at some point.
I often see that too where they go through a lot of trouble and pvc material of piping an elaborate draining system on the roof to expel the water into a rain drain or close to it. I often scratch my head of what's the point?
A lot of times this is done to prevent the growth of plants on a roof that is tar and gravel or just has low spots that hold water. I can't tell you how many small trees I have found growing next to units that were not drained properly and just let the water fall on the roof. The roots will find their way through the roofing material.