Condensate Drain Pipe U Trap Calculation

Minimum sea level with fan on fan outlet pressure recommendation.

Condensate drain pipe u trap calculation.

The drain must be run to an indirect waste line and must be protected from freezing. However within the industry there is no definition of what constitutes proper or acceptable design. 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. A 1 x total static drain pipe diameter 2 3.

B x total static drain pipe diameter 1 4. Condensate drain pipe sizing kw connected to the condensate drain pipe condensate drain diameter inches 0 7 0 kw 3 4 7 5 kw 1 5 kw 4 kw 2 kw 2 kw 3 kw 4 upvote 0 downvote 0 reply 0. Listed internal static return external static total static at drain 2. Check the local building or plumbing code for the proper requirements for your area.

Trap for blow thru unit fan running and condensate beginning to drain away. Current drain systems condensate drain systems accepted as the industry standard include water traps like the one shown in figure 2. Use table 307 2 2 for condensate pipe sizing. Minimum condensate drain pan figure 5.

Slope to drain hand tight plug from coil pan hand ti gh plu water seal figure 6. Internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal. Condensate line could freeze. Wherever practical it is safer to use inch of fall per foot to ensure proper drainage.

W c 1 2 in. 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. Condensate traps h fan outlet pressure in. 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.

Recommended use of tees and plugs.