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4

3.  Installing the indoor unit

Fig. 3-6

B

A

C

E

D

3.2.3.  Installing the wall mounting fixture

 Since the indoor unit weighs near 13 kg, selection of the mounting 

location requires thorough consideration. If the wall does not seem to be 

strong enough, reinforce it with boards or beams before installation.

 The mounting fixture must be secured at both ends and at the centre, if 

possible. Never fix it at a single spot or in any nonsymetrical way.

  (If possible, secure the fixture at all the positions marked with a bold 

arrow.)

 Warning:

If possible, secure the fixture at all positions indicated with a bold arrow.

 Caution:

•  The unit body must be mounted horizontally.

•  Fasten at the holes as shown by the arrows.

(Fig. 3-4)

Min. 119 mm (669 mm or greater with optional drain pump installation)

Min. 224 mm

Min. 75 mm (Use the hook positioned on the lower part of the mount board when the 
dimension is less than 100 mm with left, rear left, or lower left piping, and optional drain 

pump installation. Refer to 3.5. for details.)

Fixing screws (4 × 25) 

2

Level

Mount board 

1

3.3.  When embedding pipes into the wall (Fig. 3-5)

•  The pipes are on the bottom left.
•  When the cooling pipe, drain pipes internal/external connection lines etc are to 

be embedded into the wall in advance, the extruding pipes etc, may have to be 
bent and have their length modified to suit the unit.

•  Use marking on the mount board as a reference when adjusting the length of the 

embedded cooling pipe.

•  During construction, give the length of the extruding pipes etc some leeway.

Mount board 

1

Reference marking for flare connection

Through hole

On-site piping

3.4.  Preparing the indoor unit

*  Check beforehand because the preparatory work will differ depending on the 

exiting direction of the piping.

*  When bending the piping, bend gradually while maintaining the base of the 

piping exiting portion. (Abrupt bending will cause misshaping of the piping.)

*  Cut off outlet of the pipe depending on the exiting direction of the piping.

Extraction and processing of the piping and wiring (Fig. 3-6)

1. Connection of indoor/outdoor wiring → See page 8.

2.  Wrap the felt tape 

3

 in the range of the refrigerant piping and drain hose which 

will be housed within the piping space of the indoor unit. 
•  Wrap the felt tape 

3

 securely from the base for each of the refrigerant piping 

and the drain hose. 

•  Overlap the felt tape 

3

 at one-half of the tape width. 

•  Fasten the end portion of the wrapping with vinyl tape.

Liquid pipe

Gas pipe

Indoor/outdoor connection cable

Drain hose

Felt tape 

3

3.  Be careful that the drain hose is not raised, and that contact is not made with the 

indoor unit box body.  
Do not pull the drain hose forcefully because it might come out. 

Rear, right and lower piping (Fig. 3-7)

1) Be careful that the drain hose is not raised, and that contact is not made with 

the indoor unit box body.  
Arrange the drain hose at the underside of the piping and wrap it with felt 
tape 

3

2) Securely wrap the felt tape 

3

 starting from the base. (Overlap the felt tape at 

one-half of the tape width.) 

Cut off for right piping. 

Cut off for lower piping. 

A

B

C

D

D

D

F

E

D

D

Fig. 3-5

B

A

C

D

Fig. 3-7

B

A

1)

2)

Fig. 3-4

 

: Points to be fastened (5 points)

 

: Points to be fastened only when 

using the lower hook (2 points)

en

RH79A071W01_01en.indd   4

2020/09/24   9:05:24

Summary of Contents for Mr. SLIM PKA-M-LAL Series

Page 1: ...Air Conditioners PKA M LAL Series FOR INSTALLER English INSTALLATION MANUAL RH79A071W01_Cover indd 1 2020 09 24 9 08 55 ...

Page 2: ...igerant comes into contact with a flame poisonous gases will be released All electric work must be performed by a qualified technician according to local regulations and the instructions given in this manual Do not use intermediate connection of the electric wires Use only specified cables for wiring The wiring connections must be made securely with no tension applied on the terminal connections A...

Page 3: ...s or dripping water When the room humidity exceeds 80 or when the drainpipe is clogged water may drip from the indoor unit Do not install the indoor unit where such dripping can cause damage When installing the unit in a hospital or communications office be prepared for noise and electronic interference Inverters home appliances high frequency medical equipment and radio communications equipment c...

Page 4: ... the wall mounting fixture 3 2 1 Setting the wall mounting fixture and piping positions Using the wall mounting fixture determine the unit s installation position and the locations of the piping holes to be drilled Warning Before drilling a hole in the wall you must consult the building contractor Fig 3 2 A Mount board 1 B Indoor unit C Bottom left rear pipe hole ø75 D Bottom right rear pipe hole ...

Page 5: ... Reference marking for flare connection C Through hole D On site piping 3 4 Preparing the indoor unit Check beforehand because the preparatory work will differ depending on the exiting direction of the piping When bending the piping bend gradually while maintaining the base of the piping exiting portion Abrupt bending will cause misshaping of the piping Cut off outlet of the pipe depending on the ...

Page 6: ...or unit is installed level A Mount board 1 B Indoor unit C Hook D Square hole Left and left rear piping Fig 3 11 3 While inserting the drain hose into the wall penetration hole penetration sleeve hang the top of the indoor unit to the mount board 1 Cut part of the shipping box and wrap into a cylindrical form as illustrated in the diagram Hook this to the rear surface rib as a spacer and raise the...

Page 7: ...y ø6 35 thickness 0 8 mm ø9 52 thickness 0 8 mm ø12 7 thickness 0 8 mm ø15 88 thickness 1 0 mm Do not use pipes thinner than those specified above 4 2 Connecting pipes Fig 4 1 When commercially available copper pipes are used wrap liquid and gas pipes with commercially available insulation materials heat resistant to 100 C or more thickness of 12 mm or more The indoor parts of the drain pipe shoul...

Page 8: ...C TUBE Make sure that there is no water leakage from the connections Do not put the drain piping directly in a drainage ditch where sulphuric gas may be generated When piping has been completed check that water flows from the end of the drain pipe Caution The drain pipe should be installed according to this Installation Manual to ensure correct drainage Thermal insulation of the drain pipes is nec...

Page 9: ...g strand wires because beards may cause the wiring to short out 3 Install the parts that were removed back to their original condition 4 Fasten each of the wires with the clamp under the electrical parts box A Electrical box cover B Fixing screw C Clamp D Ground wire connection portion E MA remote control terminal block 1 2 do not have polarity F Terminal block for indoor and outdoor units connect...

Page 10: ...ting Indoor unit L N 3 Indoor unit Outdoor unit S1 S2 3 230 V AC Indoor unit Outdoor unit S2 S3 3 4 24 V DC 28 V DC Wired remote controller option Indoor unit 3 12 V DC 1 For 35 140 outdoor unit application Max 45 m If 2 5 mm2 used Max 50 m If 2 5 mm2 used and S3 separated Max 80 m For 200 250 outdoor unit application Max 18 m If 2 5 mm2 used Max 30 m If 4 mm2 used and S3 separated Max 50 m If 6 m...

Page 11: ...r supply terminal kit is used change the indoor unit electrical box wiring refering to the figure in the right and the DIP switch settings of the outdoor unit control board Refer to the installation manual for the Power supply terminal kit Affix label B that is included with the manuals near each wiring diagram for the indoor and outdoor units Note Some units cannot be used in a simultaneous twin ...

Page 12: ...splay 12 hour format 24 hour format B AUTO mode Single set point Dual set point C Pair No 0 3 D Backlight On Off E 4 1 Switching to the initial setting mode 1 Press the button 1 to stop the air conditioner 2 Press the button 2 The Function setting screen will be displayed and the function No A will blink Fig 6 6 Press the button 4 to change the function No 3 Check that function No 1 is displayed a...

Page 13: ...rsor Cursor Ref address Mode 1 Mode 2 Mode 3 Mode 4 Grp F1 F2 F3 F4 Function setting Cursor Cursor Request Ref address Mode 1 Mode 2 Mode 3 Mode 4 Grp Fig 6 11 Fig 6 12 F1 F2 F3 F4 Function setting Ref address Sending data Grp Fig 6 13 Fig 6 14 Fig 6 16 Fig 6 15 Fig 6 17 6 3 2 By wireless remote controller 1 Going to the function select mode Press the button between of 5 seconds Start this operati...

Page 14: ...ported indoor unit is equipped with outdoor air intake 3 Power voltage 240 V 04 1 220 V 230 V 2 Select unit numbers 1 to 4 or All Mode Settings Mode no Setting no Initial setting setting Filter sign 100 Hr 07 1 2500 Hr 2 No filter sign indicator 3 Fan speed Silent 08 1 Standard 2 High ceiling 3 Fan speed during the cooling thermostat is OFF Setting fan speed 27 1 Stop 2 Extra low 3 1 When the powe...

Page 15: ... is turned on Please Wait is displayed for 3 minutes during system startup Normal After power is turned on Please Wait is displayed for 3 minutes then error code is dis played After startup is displayed green once and red once blink alternately F1 Incorrect connection of outdoor terminal block L N and S1 S2 S3 After startup is displayed green once and red twice blink alternately F3 F5 F9 Outdoor u...

Page 16: ...ller power supply Indicates whether power is supplied to the wired remote controller The LED is lit only for the indoor unit that is con nected to the outdoor unit that has an address of 0 LED 3 indoor outdoor unit communication Indicates whether the indoor and outdoor units are communicating Make sure that this LED is always blinking Test run Fig 7 5 1 Press the button 1 to stop the air condition...

Page 17: ...ignal received Beeper sounds Refer to the following tables for details on the check codes Wireless remote controller Output pattern A 7 3 Self check Refer to the installation manual that comes with each remote controller for details Output pattern A Errors detected by indoor unit Wireless remote controller Wired remote controller Symptom Remark Beeper sounds OPERATION INDICATOR lamp blinks Number ...

Page 18: ...ceived the specified refrigerant address is incorrect On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit Blink of operation lamp On wired remote controller Check code displayed in the LCD If the unit cannot be operated properly after test run refer to the following table to find the cause Symptom Cause Wired remote controller LED 1 2 PCB in outdoor uni...

Page 19: ...l Ref address Cool Ref address Cool Sub cool OU TH4 temp OU TH6 temp OU TH7 temp IU air temp IU HEX temp IU filter time 1 2 3 Select Service from the Main menu and press the SELECT button Select Check with the F1 or F2 button and press the SELECT button Select Smooth maintenance with the F1 or F2 button and press the SELECT button Select each item Select the item to be changed with the F1 or F2 bu...

Page 20: ...99 514 Carnaxide Lisbon Portugal Spanish Branch Carretera de Rubi 76 80 Apdo 420 08173 Sant Cugat del Valles Barcelona Spain Scandinavian Branch Hammarbacken 14 P O Box 750 SE 19127 Sollentuna Sweden UK Branch Travellers Lane Hatfield Herts AL10 8XB England U K Polish Branch Krakowska 50 PL 32 083 Balice Poland MITSUBISHI ELECTRIC TURKEY ELEKTRİK ÜRÜNLERI A Ş Şerifali Mah Kale Sok No 41 34775 Ümra...

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