P Trap On Ac Drain Line

The ac equipment is set on the slab floor or curb and it is the mechanical contractor s job to install a p trap.

P trap on ac drain line. All air conditioners have a special drain for. It s similar to the trap under your kitchen or bathroom sink. Condensate comes from evaporator coil. Air conditioning units pull a lot of water out of the air.

I guess in an effort to make sure that there is one when it is actually needed. This one tells why a p trap is necessary on the air conditioner evaporator. Also capped the p trap on the. It seems that all of the large ac companies have their installers put a p trap on every unit.

A central air system routes condensation through a u shaped trap located in the drain line just outside the air handler. Traps with insufficient height between the inlet and outlet design deficiency on draw through systems can cause the drain to back up when the fan is on possibly causing. That is why in the summer your car drips water. The double trap causes drainage issues because air becomes trapped between the two traps and air is lighter than water.

A p trap serves a very important purpose on an a c unit. See when moist air hits something cold the water condenses out of the air and collects on the cold surface. Trap failures due to freeze up drying out breakage blockage and or improper installation can compromise the seal against air ingestion through the condensate drain line. There is a major difference between using p traps on sanitary applications and condensate removal from an ac unit and that is.

Anytime your drain goes up and down more than once you have a double trap unless you place an air vent between the two traps that vents above the drain inlet. Air conditioning units are shipped from the factory to the job site without a condensate drain trap. This video is part of the heating and cooling series of training videos made to a. If fan is located upstream of coil fan will pull water up drain line counter to water flowing down drain.

A p trap is needed to block air and allow condensate to drain properly. 08 22 2018 09 32 pm 4. Ok here is some detail. What is a p trap you say.