What is U trap in HVAC?

Without the slightest doubt in my mind that the u-trap is among the misunderstood component of the heating ventilation air conditioning system (HVAC). The primary function of the u-trap is to prevent infiltration of air into the unit via the drain line.Click to see full answer. Subsequently, one may also ask, what is the purpose of a condensate trap?The primary purpose of a condensate trap is to prevent air from moving in or out of the coil box or air handler during operation. Traps must be installed in a manner that will stop the air from passing through, but still allow the condensate to drain from the condensate pan. Without a trap, this doesn’t happen.Furthermore, why do you need AP trap for AC? The primary purpose of the P-trap in a plumbing system is to form an isolation seal between that system and the sanitary sewer, thereby preventing sewer gases and other contaminants from entering the building. The drain seal on the condensate drain line of a draw-through hvac system has an entirely different purpose. Also know, what is an AC trap? The same thing applies to our air conditioner, but in our case, the purpose of the P-Trap is to prevent outside air from being drawn through the A/C unit. The weight of the water in the trap is enough to prevent this, while still allowing condensation to flow freely. Another key component of a P-Trap is an air vent…Should condensate trap be full of water?These traps form a seal which prevents poisonous combustion gases passing out of the boiler along the condensate drain pipe. If the trap is removed for cleaning it should always be refilled with water when it is fitted, before running the boiler.