Mitsubishi Electric MFZ-KJ35VE Instruction Manual page 3

1-3. SPECIFICaTIoNS
Model
Indoor unit Outdoor unit Rated Voltage Frequency
MFZ-KJ25VE MUFZ-KJ25VE(HZ)
MFZ-KJ35VE MUFZ-KJ35VE
MFZ-KJ35VE MUFZ-KJ35VEHZ
MFZ-KJ50VE MUFZ-KJ50VE(HZ)
*1 Connect to the power switch which has a gap of 3 mm
or more when open to interrupt the source power phase.
(When the power switch is shut off, it must interrupt all
phases.)
*2 Use wires in conformity with design 60245 IEC 57.
*3 Never use pipes with thickness less than specified. The
pressure resistance will be insufficient.
*4 Use a copper pipe or a copper-alloy seamless pipe.
1-4. INSTALLATION DIAGRAM
(KJ25, 35/KJ50)
100/500 mm or more
Units should be installed by licensed
contractor according to local code
requirements.
aCCESSoRIES
Check the following parts before installation.
(1) Drain hose*
(2) Remote controller holder
(3) Fixing screw for (2) 3.5 × 16 mm (Black)
(4) Pipe cover
(5) Band
(6) Battery (AAA) for (12)
(7) Indoor unit mounting bracket
(8) Fixing screw 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.
<Outdoor unit>
(14) Drain socket (VE type only)
Power supply *1 Wire specifications *2
Breaker Power supply
capacity (3-core)
10 A 1.0 mm
230 V 50 Hz 12 A 1.5 mm
16 A 2.0 mm
*5 Be careful not to crush or bend the pipe during pipe bend-
ing.
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 If pipe length exceeds 7 m, additional refrigerant (R410A)
charge is required. (No additional charge is required for
pipe length less than 7 m.)
Additional refrigerant = A × (pipe length (m) – 7)
Appearance of the
outdoor unit may differ
from some models.
(KJ25, 35/KJ50)
200/500 mm or more
PaRTS To BE PRoVIDED aT YouR SITE
(A) Indoor/outdoor unit connecting wire*
1
(B) Extension pipe
1
(C) Wall hole sleeve
2
(D) Wall hole cover
1
(E) Pipe fixing band
2
(F) Fixing screw for (E) 4 × 20 mm
2
(G) Piping tape
1
(H) Putty
5
Drain hose
(I) (or soft PVC hose, 15 mm inner dia. or
4
hard PVC pipe VP16)
4
(J) Refrigeration oil
1
(K) Power supply cord*
1
* Note:
2
Place indoor/outdoor unit connecting wire (A) and
power supply cord (K) at least 1 m away from the TV
antenna wire.
1
Pipe size
(thickness *3, *4)
Indoor/outdoor
Gas / Liquid
connecting wire
2
ø9.52 / 6.35 mm
(0.8 mm)
4-core
2
2
2.0 mm
ø12.7 / 6.35 mm
2
(0.8 mm)
*8 Insulation material : Heat resisting foam plastic 0.045
specific gravity
*9 Be sure to use the insulation of specified thickness. Ex-
cessive thickness may cause incorrect installation of the
indoor unit and insufficient thickness may cause dew drip-
page.
Be sure to use wall hole
sleeve (C) to prevent indoor/
outdoor connecting wire (A)
from contacting metal parts
in the wall and to prevent
damage by rodents in case
the wall is hollow.
After the leak test, apply insulating material tightly so that there is no gap.
When the piping is to be attached to a wall containing metals (tin
plated) or metal netting, use a chemically treated wooden piece 20
mm or thicker between the wall and the piping or wrap 7 to 8 turns of
insulation vinyl tape 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.
outdoor unit installation
2/4-10 mm × 21 mm slot
Drain piping for outdoor unit
<VE type only>
• Provide drain piping before indoor and outdoor
piping connection.
• Connect drain hose (I) I.D.15 mm as shown in
the illustration.
• Make sure to provide drain piping with a down-
hill grade for easy drain flow.
1
1
1
1
2 to 5
Note:
2 to 5
Install the unit horizontally.
1
Do not use drain socket (14) in cold regions.
Drain may freeze and make the fan stop.
1
The outdoor unit produces condensate during
1 or 2 the heating operation. Select the installation
place to ensure to prevent the outdoor unit and/
1
or the grounds from being wet by drain water or
damaged by frozen drain water.
1
(KJ25, 35/KJ50)
Pipe length and height difference
Max. pipe length 20/30 m
Max. height difference 12/15 m
Max. number of bends *5, *6 10
Refrigerant adjustment A *7 30/20 g/m
Insulation thickness *8, *9 8 mm
Wall hole
sleeve (C)
Wall hole cover (D)
Seal the wall hole
Indoor unit
gap with putty (H).
Fix the pipe to wall
with pipe fixing
band (E).
Cut off the extra
Pipe fixing band
length.
(E)
Fixing screw
(F)
(KJ25, 35/KJ50)
800/840 mm
150/175
500 mm
mm
Air inlet
Air outlet
40 mm
(14)
(I)
En-