Mitsubishi MFZ-KA09NA Installation Manual page 3

1-3. SPECIFICATIONS
1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR WIRE CON-
NECTION
• Power should be taken from an exclusive branched circuit.
• Wiring work should be based on applicable technical standards.
• Wiring connections should be made following the diagram.
• Securely tighten screws.
Connecting wires and the ground wire
• Use solid conductor AWG14 or stranded conductor AWG14.
• Use double insulated copper wire with 600 V insulation.
• Use copper conductors only.
* Follow local electrical codes.
Note:
When the indoor unit is powered from the outdoor unit, depending on local
code, a disconnect switch (15A MAX) needs to be installed to a power supply
circuit.
1-3-2. REFRIGERANT PIPES
• To prevent condensation, insulate the two refrigerant pipes.
• Refrigerant pipe bending radius must be 4 in. (100 mm) or more.
CAUTION
Be sure to use the insulation of specified thickness (table on the right). Exces-
sive insulation may cause incorrect installation of the indoor unit, and too little
insulation may cause condensate to form.
• The unit has flared connections on both indoor and outdoor sides.
• Remove the valve cover from the outdoor unit, then connect the pipe.
• Refrigerant pipes are used to connect the indoor and outdoor units.
• Be careful not to crush or over bend the pipe in pipe bending.
1-4. INSTALLATION DIAGRAM
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
(1) Drain hose*
(2) Remote controller holder
(3) Screws for (2) 3.5 × 16 mm (Black)
(4) Pipe cover
(5) Band
(6) Battery (AAA) for (12)
(7) Indoor unit mounting bracket
(8) Fixing screws for (7) 4 × 25 mm
(9) Wood screw for indoor unit fixation
(10) Washer of (9)
(11) Felt tape (For left or left-rear piping)
(12) Wireless remote controller
(13) Air cleaning filter
* Note:
The Drain hose is connected to the unit.
PARTS TO BE PROVIDED
AT YOUR SITE
(A) Indoor/outdoor unit connecting wire*
(B) Extension pipe
(C) Wall hole sleeve
(D) Wall hole cover
(E) Pipe fixing band
(F) Fixing screw for (E) 4 × 20 mm
(G) Piping tape
(H) Putty
Drain hose
(I) (or soft PVC hose, 19/32 in. (15 mm)
inner diameter or hard PVC pipe VP16)
(J) Refrigeration oil
(K) Power supply cord*
* Note:
Place indoor/outdoor unit connecting wire (A)
and power supply cord (K) at least 3 ft. (1 m)
away from the TV antenna wire.
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Units should be installed by licensed contractor
according to local code requirements.
Electrical specifications
MODEL MFZ-KA09NA MFZ-KA12NA MFZ-KA18NA
INDOOR UNIT
Power supply (V, PHASE, Hz)
UNIT AMPS (A)
Outside
diameter
Pipe
For liquid KA09/12/18 1/4 (6.35) 0.0315 (0.8)
KA09/12 3/8 (9.52) 0.0315 (0.8)
For gas
KA18 1/2 (12.7) 0.0315 (0.8)
Use the wall
Indoor unit
hole sleeve
(C) to prevent
indoor/outdoor
connecting
wire (A) from
contacting
metal parts in
the wall and
to protect the
wiring from
rodents.
After the leak test, apply insulating material
tightly so that there is no gap.
When the piping is to be attached to a wall com-
prised of tin plate or metal netting, use chemically
treated wooden piece 25/32 in. (20 mm) or thicker
between the wall and the piping, or wrap insulation
vinyl tape 7 to 8 turns around the piping.
To use existing piping, perform COOL operation
for 30 minutes and pump down before removing
the old air conditioner. Remake flare according to
the dimension for new refrigerant.
208/230, 1, 60
<15
Minimum wall Insulation
Insulation
thickness thickness
material
inch (mm)
5/16 (8) Heat resistant
foam plastic
5/16 (8)
0.045 Specific
gravity
5/16 (8)
Wall hole cover (D)
Seal the wall hole
gap with putty (H).
Wall hole
Attach the pipe
sleeve (C)
to wall with pipe
fixing band
(E).
Cut off the Pipe fixing
extra length. band (E)
Fixing screw (F)
En-