Condensate Drain Piping
-The drain hose should run straight down the wall to a level where the runoff will not stain the wall.
-There should be no traps. Avoid putting the end of the hose in water.
-To conveniently drain the system, the drain hose must slant downward, with a slope of at least 1 : 50 to prevent leakage. Figure 23 shows the unit in the floor mounted position.
-When the drain hose is placed in the room, insulate the hose with foam polyethylene to avoid damage to the ceiling or furniture.
-After completing installation of refrigerant lines, wiring and drain connections, bind the tubing, wiring and drain hose (check if local codes permit binding) into a bundle by using tape at 100 or 200 mm (4" to 8") intervals. Make sure the drain hose is at the bottom of the bundle (Figure 24).
Indoor unit
Slant
Drain hose
Figure 24
Drain hose
Figure 23
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