Quote:
Originally Posted by Topspinmo
RickeyD thanks for the explanation!
My Unit is mounted at least 2 feet above the garage floor. With the drain running down the side of the unit (which the A coil is mounted even higher above the fan and heater unit. The Drain has built in P trap using the full length of the garage to outside Ac unit where the drain goes up and out to drain.
With the Fan running so far above the garage floor Fan air comes out the Wye connector when I take the cap off. IMO the hold length of the drain water is very heavy will not allow any air to be pulled up the drain. IMO this also allows slow movement of water to drain due to the length increasing build up over the years. It took 12 years plus to accumulate.
|
Yes, but it's not the length of the drain, rather it's the height of the water column that doesn't allow air to be sucked in by the negative pressure. This water column height is specified in the installation and operation manual.