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Refrigerant Piping Connections
Due to our policy of continuous product innovation, some specifications may change without notification.
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REFRIGERANT PIPING CONNECTIONS
If the installation location includes a vinyl chloride drain pipe system, insert the end of the indoor unit drain hose (or drain hose extension) more than
two (2) inches so it won’t pull out.
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
Extending the Indoor Unit Drain Hose
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Depending on the location of the indoor unit, and its accessibility to the outside, It could be
necessary to extend the drain hose so that condensate will be properly routed away.
1. Insert the field-supplied drain extension hose into the indoor unit drain hose joint.
2. Securely wrap the connection between the field-supplied drain hose and the indoor unit
drain hose with vinyl tape.
3. All drain hoses and hose connections must be properly insulated to ensure any conden-
sation will not damage walls, floors, furniture, etc. Extension connection insulation is to be
more than 12 inches in length, and more than 1/4 inches thick (follow all local, state, and
federal codes for the proper insulation materials and installation procedures).
2 inches
(50 mm)
Outside Wall
Inside Wall
Vinyl Chloride
Drain Pipe
System
Indoor
Outdoor
Indoor Unit
Drain Hose
Indoor Unit
Drain Hose
Insulation
(More than 12 inches long
and 1/4 inches thick)
Drain Hose
Extension
Figure 58: Connecting the Extension Drain
Hose to the Indoor Unit Drain Hose.
Figure 59: Securing the Extension Drain Hose
to the Indoor Unit Drain Hose.
Figure 60: Insulating the Indoor Unit to Extension Drain Hose
Connection.
Indoor Unit Condensate Drain Hose
Precautions for Drain Hose Installation in a Wall-Embedded
Drain Pipe System
Follow all local, state, and federal guidelines when working with a wall-embedded drain pipe system.
Figure 61: Inserting the Drain Hose More Than Two (2) inches Into the
Wall-Embedded Drain Pipe System (Overview).
Figure 62: Inserting the Drain Hose More Than Two (2) inches Into the
Wall-Embedded Drain Pipe System (Close Up View).
