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2-4-3. EMBEDDING THE INDOOR UNIT IN A WALL

1.  Make a hole in the wall.
2.  Using reinforcement material, adjust the depth.

3. Remove 6 screws that fix the base to the unit. Remove the base from 

the unit.

4. Fix the indoor unit at 4 points with the included wood screws (9) and 

washers (10). Tighten the screws securely.

4

575

740

70

4

3

3

3

3

3 3

705

2-4. INDOOR UNIT INSTALLATION

2-4-1. INSTALLING THE INDOOR UNIT ON THE FLOOR

1. Place the indoor unit on the flat floor.

2. Fix the indoor unit at 4 points with the included wood screws (9) and 

washers (10). Tighten the screws securely.

2-4-2. MOUNTING THE INDOOR UNIT ON THE WALL

1. Hook the top of the indoor unit on the indoor unit mounting bracket (7).

2. Fix the indoor unit at 4 points with the included wood screws (9) and 

washers (10). Tighten the screws securely.

405

137

387

Indoor terminal block

Indoor/outdoor unit 
connecting wire 

(A)

Outdoor terminal block

Earth wire 

(green/yellow)

•  Make earth wire a little longer than others. (More than 45 mm)

•  For future servicing, give extra length to the connecting wires.
•  Do not fold the excess wire, or cram it into small space. Take caution not to 

damage the wires.

•  Be sure to attach each screw to its correspondent terminal when securing the 

cord and/or the wire to the terminal block.

2-5. ConnECtInG WIREs FoR InDooR unIt

1) Remove VA clamp.

2) Pass indoor/outdoor unit connecting wire (A) from the back of the indoor unit 

and process the end of the wire.

3) Loosen  terminal  screw,  and  connect  first  the  earth  wire,  then  indoor/outdoor 

unit  connecting  wire  (A)  to  the  terminal  block.  Be  careful  not  to  make  mis-

wiring. Fix the wire to the terminal block securely so that no part of its core is 

appeared, and no external force is conveyed to the connecting section of the 

terminal block. 

4) Firmly tighten the terminal screws to prevent them from loosening. After tight

-

ening, pull the wires lightly to confirm that they do not move.

5) Secure indoor/outdoor unit connecting wire (A) and the earth wire with the VA 

clamp. Never fail to hook the left claw of the VA clamp. Attach the VA clamp 

securely.

Terminal block

Fixing screw

Indoor/outdoor unit 

connecting wire (A)

VA clamp

Lead wire

35 mm

15 mm

2-6. PIPE FoRMInG anD InstallatIon

Pipe Forming

•  Route the drain hose diagonally below the connecting pipes.

•  Make sure that the drain hose is not routed upward and that there are no 

waves in the hose.

•  Do not pull the hose when applying the tape.

•  Route the piping so that it does not project past the rear of the indoor unit. (Refer 

to the figure to the right.)

Connecting Pipe Installation

•  Install the connecting pipes so that the piping can move slightly to the front, 

back, left, and right.

Piping 
tape

Drain hose

Refrigerant 
piping

Piping bent out-
ward

Push

•  Be sure to insulate the connecting pipes so that they do not contact the panel.

•  Be careful not to crush the connecting pipes when bending them.

Remove the cover.

RIGHT DOWNWARD PIPING

OTHER PIPING

Band (5)

Pipe cover (4)

Band (5)

Reinforcement 
material

Unit

Base

JG79A867H01_en.indd   4

2014/02/07   15:45:01

Summary of Contents for MFZ-KJ25VE

Page 1: ... TYPE AIR CONDITIONERS MFZ KJ25VE MFZ KJ35VE MFZ KJ50VE English InstallatIon Manual For INSTALLER When installing multi units refer to the installation manual of the multi unit for outdoor unit installation ...

Page 2: ...ls and piping materials for installation The pressure of R410A is 1 6 times more than R22 Not using appropriate tools or materials and incom plete installation could cause the pipes to burst or injury n When pumping down the refrigerant stop the compressor before disconnecting the refriger ant pipes If the refrigerant pipes are disconnected while the compressor is running and the stop valve is ope...

Page 3: ...ess than 7 m Additional refrigerant A pipe length m 7 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 Model Power supply 1 Wire specifications 2 Pipe size thickness 3 4 Indoor unit Outdoor unit Ra...

Page 4: ...WARD PIPING The following figure is a view of the bottom of the indoor unit from above FOR REAR OR LEFT REAR PIPING The following figure is a front view of the indoor unit installation location FOR LEFT PIPING FOR RIGHT PIPING HolE PosItIons ø65 mm KJ25 35 ø75 mm KJ50 5 7 mm 2 3 InDooR unIt PREPaRatIon Remove the front panel of the indoor unit 1 Push down the tab on the both sides of the unit to o...

Page 5: ...door unit and process the end of the wire 3 Loosen terminal screw and connect first the earth wire then indoor outdoor unit connecting wire A to the terminal block Be careful not to make mis wiring Fix the wire to the terminal block securely so that no part of its core is appeared and no external force is conveyed to the connecting section of the terminal block 4 Firmly tighten the terminal screws...

Page 6: ...tape 11 Cut and use the lower side panels on the left and right sides of the indoor unit as shown below Smooth the cut edges of the side panels so that they will not damage the insulation coating For left or right piping Installing flush against a wall with molding Molding Cut the lower side panels to match the height of the molding Fig 5 Projection Make sure to hook the catch Drain hose Pull the ...

Page 7: ...me manner applied for indoor unit For tightening use a torque wrench or spanner and use the same tightening torque applied for indoor unit 3 4 INSULATION AND TAPING 1 Cover piping joints with pipe cover 2 For outdoor unit side surely insulate every piping including valves 3 Using piping tape G apply taping starting from the entry of outdoor unit Stop the end of piping tape G with tape with adhesiv...

Page 8: ...et temperature 24ºC will start 2 To stop operation press the E O SW several times until all LED lamps turn off Refer to operating instructions for details Checking the remote infrared signal reception Press the ON OFF button on the remote controller 12 and check that an electronic sound is heard from the indoor unit Press the ON OFF button again to turn the air conditioner off Once the compressor ...

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Page 12: ...HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN JG79A867H01 ...

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