No P Trap On Ac Drain

Some coil manufacturers specify no trap on a positive pressure application which it appears yours is.

No p trap on ac drain. Drains on a negative pressure location must have a trap or the water will not drain. This one tells why a p trap is necessary on the air conditioner evaporator. Properly designed and maintained trapped systems can provide successful condensate drainage. Central air conditioners produce something other than cool comfort.

See water won t flow up hill so the 180 degree turn in the drain causes water to get trapped in the bottom of. Having your p trap and unit inspected and cleaned properly with a solution and technique administered by professionals is key to keeping your unit running smoothly. If your equipment is in a conditioned space the air escaping from the vent won t be a great loss. Air conditioning units are shipped from the factory to the job site without a condensate drain trap.

There is a major difference between using p traps on sanitary applications and condensate removal from an ac unit and that is. Current drain systems condensate drain systems accepted as the industry standard include water traps like the one shown in figure 2. But the line after the pump is usually a rubber hose and it does not need a p trap in the same way that a gravity fed line does. However within the industry there is no definition of what constitutes proper or acceptable design.

What is a p trap. Because dry air holds less heat energy humidity. The ac equipment is set on the slab floor or curb and it is the mechanical contractor s job to install a p trap. A p trap is nothing more than a properly shaped piece of pipe no moving parts just the proper shape so gravity does the work for us.

The line between the ac coil and the pump is pretty much like any other so yes it needs a p trap and vent as shown. Problems with a central air conditioner s condensate drain. Sometimes the installation instructions will call for an inverted u or p trap but no t vent. Water lots of it.