6. SYSTEM DESIGN
INSTALLATION3.
OUTDOOR UNIT3-1.
OPENING A KNOCKOUT HOLE
 CAUTION
Be careful not to deform or scratch the panel while opening the knock out holes.
To protect the piping insulation after opening a knock out hole, remove any burrs from the edge of 
the hole.  
It is recommended to apply rust prevention paint to the edge of the hole.
Pipes can be connected from 4 directions, front, lateral side, rear side and bottom. (Fig. A)
When connecting at the bottom, remove the service panel and piping cover on the front of the 
outdoor unit, and open the knock out hole provided at the bottom corner of the piping outlet.
It can be installed as shown on “Fig. B” cutting out the 2 slits as indicated on “Fig. C”. (When 
cutting slits, use a steel saw.)
Service panel
Front Lateral Rear
Front 
connection
Lateral 
connection
Rear 
connection
Bottom 
connection 
(No.1)
Fig. A
Bottom 
connection 
(No.2)
Slit
Slit
Fig. B Fig. C
- (06 - 27) -
SYSTEM
DESIGN
SYSTEM
DESIGN