7
ENGLISH
1.  GENERAL
This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the 
indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 
The installation of pipe-work shall be kept to a minimum.
WARNING
This symbol shows that this equipment uses a flammable refrigerant. If the refrigerant is leaked, together with 
an external ignition source, there is a possibility of ignition.
CAUTION
This symbol shows type of flammable refrigerant contained in the system.
CAUTION
This symbol shows that the Operating Instructions should be read carefully.
CAUTION
This symbol shows that a service personnel should be handling this equipment with reference to the Technical 
Manual.
CAUTION
This symbol shows that there is information included in the Operating Instructions and/or Installation 
Instructions.
1-1. Tools Required for Installation (not supplied)
1.  Flathead screwdriver
2.  Phillips head screwdriver
3.  Knife or wire stripper
4.  Tape measure
5.  Carpenter’s level
6.  Sabre saw or keyhole saw
7.  Hacksaw
8.  Core bits
9.  Hammer
10.  Drill
11.  Tube cutter
12.  Tube flaring tool
13.  Torque wrench
14.  Adjustable wrench
15.  Reamer (for deburring)
1-2. Accessories Supplied with Unit
Table 1-1  (4-Way Cassette)
Part Name
Figure
Q’ty
Remarks
Full-scale 
installation 
diagram
1
Printed on 
container box
Washer
8
For suspension 
bolts
Screw
4
For full-scale 
installation diagram
Insulating tape
2
For gas and liquid 
tube flare nuts
Flare insulator
1 For liquid tube
Flare insulator
1 For gas tube
Drain hose
1
Hose band
1
For securing drain 
hose
Part Name
Figure
Q’ty
Remarks
Packing
1
Drain insulator
1
Clamper
4 For electrical wiring
Operating 
Instructions
1
Installation 
Instructions
1
●
  Use M10 for suspension bolts.
●
  Field supply for suspension bolts and nuts.
1-3. Type of Copper Tube and Insulation Material
If you wish to purchase these materials separately from a local 
source, you will need:
1.  Deoxidized annealed copper tube for refrigerant tubing.
2.  Foamed polyethylene insulation for copper tubes as 
required to precise length of tubing. Wall thickness of the 
insulation should be not less than 8 mm.
3.  Use insulated copper wire for field wiring. Wire size varies 
with the total length of wiring. See the section  
“4. ELECTRICAL WIRING” for details.
  
 
CAUTION
Check local electrical codes and regulations before 
obtaining wire. Also, check any specified instructions or 
limitations.
1-4. Additional Materials Required for Installation
1.  Refrigeration (armored) tape 
2.  Insulated staples or clamps for connecting wire (See your 
local codes.) 
3.  Putty 
4.  Refrigeration tubing lubricant 
5.  Clamps or saddles to secure refrigerant tubing 
6.  Scale for weighing 
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