Mitsubishi Electric MFZ-KT25VG Installation Manual page 4

1-3. SPECIFICATIONS
Model
Rated Voltage
MFZ-KT25VG
MFZ-KT35VG
230 V
MFZ-KT50VG
MFZ-KT60VG
*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.
1-4. INSTALLATION DIAGRAM
When installing outdoor units, refer to the installation of outdoor units.
The piping specification table does not provide a minimum line set length.
However, indoor units with connected piping length less than 3 m could produce
EN
intermittent noise during normal system operation in very quiet environments.
Please be aware of this important information when installing and locating the
indoor unit within the conditioned space.
Obstacles above
It's possible to install
an obstacle to the
following area.
40 mm
or less
30° or less
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
Fixing screw for (2) 3.5 × 16 mm
(3)
(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
(14) Joint pipe (KT60 only)
(15) Pipe cover for joint pipe (KT60 only)
(16) Breaker tag
(17) Breaker notice
* Note:
The Drain hose is connected to the unit.
EN-3
Power supply *1 Wire specifications *2
Frequency Indoor/outdoor connecting wire
50 Hz
*4 Use a copper pipe or a copper-alloy seamless pipe.
*5 Be careful not to crush or bend the pipe during pipe bending.
*6 Refrigerant pipe bending radius must be 100 mm or more.
*7 Insulation material : Heat resisting foam plastic 0.045 specific
gravity
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
(E) Pipe fixing band
1
(F) Fixing screw for (E) 4 × 20 mm
2
(G) Piping tape
2
1
(H) Putty
5
Drain hose
(J) (or soft PVC hose, 15 mm inner dia. or
4
hard PVC pipe VP16)
4
(K) Refrigeration oil
1
1
(L) Power supply cord*
2
* Note:
1
Place indoor/outdoor unit connecting wire (A) and
1
power supply cord (L) at least 1 m away from the TV
antenna wire.
1
1
Pipe size (thickness *3, *4, *5, *6)
Gas
ø9.52 mm
(0.8 mm)
ø12.7 mm
4-core 2.0 mm
2
(0.8 mm)
ø15.88 mm
(0.8 mm)
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 dam-
age 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.
To avoid risk of fire, embed or protect the refrigerant piping.
External damage on the refrigerant piping can be cause of fire.
1
1
1
1
2 to 5
2 to 5
1
1
1 or 2
1
1
Insulation thickness *7,*8
Liquid
ø6.35 mm
14 mm
(0.8 mm)
*8 Be sure to use the insulation of specified thickness. Excessive
thickness may cause incorrect installation of the indoor unit
and insufficient thickness may cause dew drippage.
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
length.
WARNING
Pipe fixing band
(E)
Fixing screw
(F)