Condensate Drain Pipe U Trap Calculation

Current drain systems condensate drain systems accepted as the industry standard include water traps like the one shown in figure 2.

Condensate drain pipe u trap calculation.

A 1 x total static drain pipe diameter 2 3. Properly designed and maintained trapped systems can provide successful condensate drainage. 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. Slope to drain hand tight plug from coil pan hand ti gh plu water seal figure 6.

Recommended use of tees and plugs. The drain must be run to an indirect waste line and must be protected from freezing. Minimum condensate drain pan figure 5. 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.

Trap for blow thru unit fan running and condensate beginning to drain away. Condensate traps h fan outlet pressure in. Check the local building or plumbing code for the proper requirements for your area. Internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal.

W c 1 2 in. Condensate line could freeze. B x total static drain pipe diameter 1 4. 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.

However within the industry there is no definition of what constitutes proper or acceptable design. Use table 307 2 2 for condensate pipe sizing. Minimum sea level with fan on fan outlet pressure recommendation. 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.

Condensate waste and drain line size shall be not less than 3 4 in.