slow drip from insulation around low point drains

Folks, I was blowing out the lines with a shop vac ( i had hot and cold Fawcett taps on inside in the kitchen sink), collecting water from the fresh water tank drain and noticed a small drip coming from the insulation (foam) around the low point drains. There's no way to see whats happening because it's all enclosed. Another question too, why is there two low point drains (hot and cold?).

Mine drain when caps open. Lines are read and blue, hot and cold low point.

How am i connecting the shop vac to the water system? Not really connecting it, just putting the hose at the fresh water tank drain (underneath), the fresh water manual fill opening (on the side), and at the hot water heater drain (anode). Im hoping i didn't put too much pressure on any of the fittings/ lines.

Off grid, well that's a relief. But i will say the shop vac did collect way more water than i thought it would. Had to empty it while in the process (i also dropped the nose of the pod as far down as it would go, i found that helped too with getting "hidden" water.)

Originally posted by offgrid A little water left in the bottom of the tanks isn't going to damage anything when it freezes.