Mitsubishi Electric MFZ-KA25VA, Installation Manual

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ACCESSORIES
Check the following parts before installation.
<Indoor unit>
1
Drain hose 1
2 Remote controller holder 1
3
Fixing screw for
2
3.5
×
16 mm (Black) 2
4 Pipe cover 1
5
Band 2
6 Battery (AAA) for remote controller 2
7
Indoor unit mounting bracket 1
8 Fixing screw for 7 4
×
25 mm 5
9
Wood screw for the indoor unit fixation 4
0 Washer of 9 4
A
Felt tape (Used for left or left-rear piping) 1
B Wireless remote controller 1
C
Air cleaning filter 1
PART TO BE PROVIDED AT YOUR SIDE
Optional extension pipe
A
Indoor/outdoor unit connecting wire
1
(4-core 1.5 mm 2 )
B
Extension pipe 1
C
Wall hole sleeve 1
D
Wall hole cover 1
E
Pipe fixing band
(The quantity depends on the pipe length.)
2 to 5
F
Fixing screw for
E
4
×
20 mm (The quantity
depends on the pipe length.)
2 to 5
G
Piping tape 1
H
Putty 1
I
Drain hose (or soft PVC. hose, 15 mm inner dia.
1 or 2
or hard PVC pipe VP16)
J
Refrigeration oil 1
FLARED CONNECTIONS
• This unit has flared connections on both indoor and outdoor sides.
• Refrigerant pipes are used to connect the indoor and outdoor units as shown in the figure below.
• Insulate both refrigerant and drain piping completely to prevent condensation.
PIPING PREPARATION
1 Table below shows the specifications of pipes commercially available.
Pipe Outside diameter Insulation thickness Insulation material
For liquid 6.35 mm 8 mm
Heat resisting foam plastic
For gas
KA25/35 9.52 mm 8 mm
0.045 specific gravity
KA50 12.7 mm 8 mm
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm (for ø6.35 and ø9.52) or 1.0
mm (for ø12.7). Never use any pipe with a thickness less than 0.8 mm (for ø6.35 and ø9.52) or 1.0 mm (for
ø12.7), as the pressure resistance is insufficient.
2
Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3
Refrigerant pipe bending radius must be 100 mm or more.
Caution:
Be sure to use the insulation of specified thickness. Excessive thickness may cause incorrect installa-
tion of the indoor unit and lack of thickness may cause dew drippage.
3. SELECTING THE INSTALLATION LOCATION
3-1 INDOOR UNIT
• Where airflow is not blocked.
• Where cool air spreads over the entire room.
• Maximum refrigerant piping length between indoor unit and outdoor unit is 20 m (for 25/35) 30 m (for 50) and
the difference of height of both units is 12 m (for 25/35) 15 m (for 50).
• Rigid wall without vibration.
• Where it is not exposed to direct sunshine.
• Where easily drained.
• At a distance 1 m or more away from your TV and radio. Operation of the air conditioner may interfere with
radio or TV reception in areas where reception is weak. An amplifier may be required for the affected device.
• In a place as far away as possible from fluorescent and incandescent lights (so the infrared remote control
can operate the air conditioner normally).
• Where the air filter can be removed and replaced easily.
3-2 WIRELESS REMOTE CONTROLLER MOUNTING
• Place of mounting
- Where it is easy to operate and easily visible.
- Where children cannot touch.
• Mounting
Select a position about 1.2 m above the floor, check that signals from the controller are surely received by
the indoor unit from that position (‘beep’ or ‘beep-beep’ receiving tone sounds), attach remote controller
holder
3 to a pillar or wall, then set the wireless remote controller 6 .
In rooms where inverter type fluorescent lamps are used, the signal from the wireless remote controller may
not be received.
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