Piping
53 Liebert
®
SRC™ User Manual
5.3.3 Routing the Drain Hose for Indoor Unit
Drain hose is routed from the indoor unit, through the structure (wall) to the outdoors. The hose should
slope at an angle where it is higher at the indoor unit and lower at the outdoor area, letting gravity push
condensation down and out. Figure 5-19 shows the proper drainage slope. Figure 5-20 shows incorrect
methods of routing the drain hose, which cause leakage at the indoor unit.
Figure 5-19 Correct slope angle for drain hose
Figure 5-20 Incorrect methods of routing drain hose
Downward slope
to outdoor
for proper drainage
Indoor
Unit
Piping
Upward slope
to outdoor
can cause indoor
leaks.
Water
leakage
Accumulated
drain water
Air
Waving
Water
leakage
Indoor Uni t
Indoor Uni t
Incorr ect Drainage Setup
Tip of drain hose
dipped in water
Water
leakage
Ditch
Less than
2 Inch gap from ground
Indoor Unit
Drain Hose
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