Si39-303 Refrigerant Piping
Installation Manual 171
<Cautions for installation of multiple outdoor units>
1. The piping between the outdoor units must be routed level or slightly upward to avoid the
risk of oil detention to the piping side.
Pattern 1
Pattern 2
Prohibited pattern
Change to pattern 1 or pattern 2
to indoor unit
Piping between outdoor units
Piping between outdoor units
to indoor unit
to indoor unit
to indoor unit
to indoor unit
to indoor unit
Downward inclination
Downward inclination
Oil remains in piping
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