Condensate Drain Pipe U Trap Calculation

Recommended use of tees and plugs.

Condensate drain pipe u trap calculation.

The drain must be run to an indirect waste line and must be protected from freezing. 2015 imc dictates a 1 minimum pitch of the drain which is equal to 1 8 inch fall for every 12 feet of horizontal run. Minimum condensate drain pan figure 5. Minimum sea level with fan on fan outlet pressure recommendation.

Internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal. Use table 307 2 2 for condensate pipe sizing. Where the drainpipes from more than one unit are manifolded together for condensate drainage the pipe or tubing shall be sized in accordance with table 307 2 2. Condensate traps h fan outlet pressure in.

Slope to drain hand tight plug from coil pan hand ti gh plu water seal figure 6. B x total static drain pipe diameter 1 4. Condensate waste and drain line size shall be not less than 3 4 in. Current drain systems condensate drain systems accepted as the industry standard include water traps like the one shown in figure 2.

For most drain points sizing the trap to pass twice the running load at the working pressure minus any backpressure will allow it to cope with the start up load. However within the industry there is no definition of what constitutes proper or acceptable design. Listed internal static return external static total static at drain 2. For steam mains drainage the condensate load for each drain trap is typically 1 of the steam capacity of the main based on drain points at 50 m intervals and with good insulation.

A 1 x total static drain pipe diameter 2 3. Wherever practical it is safer to use inch of fall per foot to ensure proper drainage. Trap for blow thru unit fan running and condensate beginning to drain away. Properly designed and maintained trapped systems can provide successful condensate drainage.

W c 1 2 in.