Ahu Condensate Drain Trap Design

The ahu floor is on a frame that varies in height from four inches light.

Ahu condensate drain trap design.

To find the design condensate drain one needs to know the design inlet and outlet air conditions precisely the moisture content and air flow rate. This article discusses the inspection and repair or un clogging of condensate disposal systems including air conditioning heat pump or condensing boiler furnace condensate drains condensate pumps and their proper installation as part of our review of condensate piping traps drains. Codes installation leaks clogs connections troubleshooting repair. The drain line connection is at the lowest point of the sloped pan.

The difference between inlet and outlet conditions of the moisture content gives the condensate flow rate. When the coil section door was opened however the water in the pan drained very quickly. A c condensate drains pumps. Condensate traps exhibit many failure modes.

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. Condensate switches imc 307 2 3 states that all hvac equipment that produces condensate must have either a secondary drain line or a condensate overflow switch a secondary drain pan with a secondary drain line or condensate switch or some combination of these installations should be used to prevent overflow if the primary drain line blocks. The height required for a p trap is the last issue discussed. 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 drain pan overflow or water droplet carryover into.

We had studied the design of the condensate trap. In an ahu the condensate drain pan normally rests on the unit floor.