51
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Indoor Unit Condensate Drain Hose Installation, continued.
Refer to the diagrams below and follow proper installation and the position of the drain hose along the refrigerant piping installation path to avoid
leaks. After the drain hose is set in place, always follow with leak / pressure testing and deep evacuation procedures of the refrigerant piping to be
sure all refrigerant piping is properly installed. Re-check and retest as necessary.
• Remove the drain plug on left or right side depending on the piping installation. Insert the drain hose on the left side when left side piping is
used; install the drain hose on the right side when right side piping is used.
• Drain hose is routed from the indoor unit through the structure (wall) to the outdoor. It must slope at an angle where it is higher at the
indoor unit and lower toward the outdoor area, thereby letting gravity push any condensation down and out.
• The drain hose may need to be extended so that condensate can be properly routed away.
• The drain hose extension must be properly insulated to ensure condensation will not damage walls, oors, etc. Foamed polyethylene or
equivalent of at least 5/16 inches thick is recommended.
Downward Slope
to Outdoor
Indoor
Unit
Piping
Figure 59: Correct Slope Angle for Drain Hose.
Indoor Outdoor
Indoor Unit
Drain Hose
Indoor Unit
Drain Hose
Insulation
(>4 to 12 inches long
and 5/16 inches thick)
Drain Hose
Extension
Figure 60: SJ/SK Unit Drain Hose Extension.
Indoor Unit Drain Hose
REFRIGERANT PIPING CONNECTIONS
• Insert the drain hose >2 inches so it won’t pull out of the eld-
supplied drain pipe.
Figure 61: Inserting the Drain Hose >2 inches Into the Field-Supplied
Drain Pipe.
Insert the drain
hose >2 inches
so it won’t be pulled
out of the field-
supplied drain pipe.
>2 inches
Drain Hose
Interior Wall
Vinyl Chloride
Drain Pipe
Exterior Wall
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