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Refrigerant Piping Connections
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REFRIGERANT PIPING CONNECTIONS
Installation Overview
Figure 38: Installation and Piping Connection Overview (Appearances Will Vary De-
pending on Model).
Installation
Single Zone Mega and Mega 115V Wall-Mounted sys-
tems are one-to-one systems. There is a direct piping 
connection between the outdoor unit and the indoor 
unit. The figure at right illustrates the basic pipe con-
nections between the outdoor and indoor unit. Refer to 
the illustration when proceeding with pipe connections. 
The illustration shows the indoor unit being installed at 
a higher position than the outdoor unit. However, if the 
outdoor unit be installed at a higher position than the 
indoor unit, the basic pipe connections are the same.
Refer to the “Connection Limitations” section for spe-
cific length limitations in conjunction with outdoor unit 
and indoor unit positioning.
• When proceeding with piping connections, adhere to 
pipe support spacing lengths as shown in the General 
Refrigerant Piping System Information section. Refer 
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using clamps and pipe support materials.
• Always adhere to local codes regarding piping and 
accurate support spacing along the piping system.
• Always include insulation on all refrigerant and drain 
piping to ensure condensate does not form and 
cause damage to walls, floors, etc.
Connecting Cable
Vinyl tape (Wide)
Saddle
Gas Piping       
Liquid Piping       
Additional Drain Pipe
Vinyl Tape (Narrow)
Drain Hose
Installation Plate
Sleeve
Bushing-Sleeve
Sealant
• Install after drainage test.
• For the drainage test,
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  pour water into the heat 
  exchanger.
Bend the pipe as closely 
to the wall as possible, 
but be careful not to break it. 
Additional field-provided accessories / 
parts / tools that are needed for 
installation.
Air Intake Vents
Air Outlet Vents
Base Plate
Front Grille 
On/Off Button
Signal Receiver 
Display
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(Vertical Louver & Horizontal Vane)
Air Outlet 
Air Filter