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INSTALLATION AND OPERATION MANUAL
11.2. SUSPENSION OF REFRIGERANT PIPING
Suspend the refrigerant piping at certain points and prevent the 
refrigerant piping from touching the weak part of the building such as 
wall, ceiling, etc…
(If touched, abnormal sound may occur due to the vibration of the 
piping. Pay special attention in case of short piping length).
Do not x the refrigerant piping directly with the metal ttings (The 
refrigerant piping may expand and contract). 
Some examples for suspension method are shown below.
11.3. PIPING CONNECTION FOR OUTDOOR UNIT
1. The pipes can be connected from 4 directions. Make holes in the 
piping cover or cabinet for taking out pipes. Take the piping cover 
away from the unit, and make holes by cutting along the guideline at 
the rear of the cover or punching with a driver. Remove the burr with 
a cutter, and place a insulation (eld supplied) to protect cables and 
pipes.
 CAUTION:
Notes to open/close the service cover:
 Remove the screws following the instructions to the above 
gure.
 Slowly press down the cover
 NOTE: 
Hold the cover with a hand to remove screws as the cover may 
fall down.
 ¡ For the front and side piping
To use racking or conduit tubes, check the size and remove 
part following the slit.
 NOTE: 
Place insulation (eld supplied) to protect cables and pipes from 
being damaged by plate edges.
 ¡ For the downward piping
 NOTE: 
Cables shall not contact directly to the pipes.
 ¡ For the rear side piping
 NOTE: 
Remove the rear pipe cover under the rear cover and remove 
part following the slit.
For Suspending 
Heavies
For piping along 
the wall
For instant 
installation work
1~15m
Indor unit
Fire-Proof
Section 
Treatment
Nº Description
Rear side piping work
Pipe Cover
Right side piping work
Bottom side piping work (Knock out hole)
Front side piping work
Piping work
Stop Valve
Removing Direction for Service Cover
Front piping hole
Side piping hole
Gas piping
Knock-out hole
Bottom base
Cables
Liquid piping
Service cover
Hook (three places): two fans
Hook (two places): one fan
Rear Cover
PMML0197_r0_04-10.indb   26 08/07/2010   9:20:38