Mitsubishi Electric PAC-MK33BC Installation Manual Download | Manualshive

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Air-Conditioners Indispensable Optional Parts
BRANCH BOX
PAC-MK53BC
PAC-MK33BC

ONLY FOR R410A OUTDOOR UNIT

ONLY FOR INDOOR USE

HFC

utilized

R410A

INSTALLATION MANUAL

For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner
unit.

English

FOR INSTALLER

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Summary of Contents for PAC-MK33BC

Page 1: ...H BOX PAC MK53BC PAC MK33BC ONLY FOR R410A OUTDOOR UNIT ONLY FOR INDOOR USE HFC utilized R410A INSTALLATION MANUAL For safe and correct use please read this installation manual thoroughly before installing the air conditioner unit English FOR INSTALLER ...

Page 2: ... ground or a poor electrical contact at the intermediate connection point If an intermediate connection is necessary be sure to take measures to prevent water from entering the cords and wires Caution Make sure that the refrigerant pipes are well insulated to prevent condensa tion Incomplete insulation may cause condensation on the surface of pipes wetting of the ceiling floor and other important ...

Page 3: ...it use optional different diameter de formed joints to the branch box side Connect deformed joint directly to the branch box side A Suspension bolt pitch B To indoor unit C To outdoor unit D Service panel E Electric cover F Rubber bush G Terminal block to indoor unit on control board H Terminal block to outdoor unit J Terminal block for communication cable K Cable clamp PAC MK53BC Fig 4 2 Suspensi...

Page 4: ...unit A B C Liquid pipe ø6 35 ø6 35 ø6 35 ø9 52 Gas pipe ø9 52 ø9 52 ø9 52 ø15 88 320 402 12 24 A A B C B C CAP CAP 72 90 25 25 209 170 47 65 25 70 70 450 112 70 87 280 40 96 83 TB2B TB5 TB3B TB3C TB3A A A B C D K F E H G J Fig 4 3 4 1 The direction of the piping can be changed Fig 4 4 Fig 4 4 1 Remove the screws in each part 4 2 Piping direction change work procedures Fig 4 5 1 8 mm Fig 4 5 ...

Page 5: ...pposite surface B Service panel B 7 Install the electric cover on the opposite surface A Electric cover A Fig 4 5 4 Dimensions and required servicing space of Branch Box 2 Remove the electric cover service panel and top panel A Electric cover B Service panel C Top panel B A C 3 Install the top panel on the opposite surface C Top panel C ...

Page 6: ...nsion valve coils and sensors from a maintenance hole becomes difficult Only exchange work of a PCB is possible 3 Top View Fig 4 10 2 The space when installing on the floor Fig 4 11 3 The space when installing on a wall Fig 4 12 Warning The installation direction is limited when installing on a wall Fig 4 13 Correct installation direction When installing the unit on the wall install the piping con...

Page 7: ...surface of the insulation material Insulation material Heat resistant temperature 120 C Thickness 15 mm or more When the refrigerant piping is used in locations subject to high temperature and humidity such as in the attic further addition of insulation may be re quired Insulate the liquid and gas pipes of the branch box by attaching the heat resis tant polyethylene foam tightly around them Fig 7 ...

Page 8: ...0 ø1 7 50 Refrigerant charge Refer to the installation manual of the outdoor unit Use only R410A refrigerant use of other refrigerants may cause troubles Caution To avoid excessive strain on the branch box support the piping with one or more support s 1 5 m or less from the branch box Refer to Fig 7 6 as an example J Refrigerant piping L Thermal insulation for refrigerant piping mm Fig 7 4 C D 3 6...

Page 9: ...that wiring installed in the ceiling is chewed by rats etc it should be installed in wiring conduit 1 Remove the electric cover Fig 8 1 2 Pass the wiring into the branch box each wire in place with a wiring clamp 3 Firmly connect each wire to the appropriate terminal block Fig 8 8 4 Set dip sw Refer to 8 3 5 Replace the electric cover Fig 8 1 Fig 8 2 Fig 8 3 Fig 8 4 B 1 5 m or less Support Fig 8 7...

Page 10: ...or unit Circuit breaker indoor unit C indoor unit D indoor unit C indoor unit A indoor unit B indoor unit E indoor unit A indoor unit B Indoor unit M NET Branch BOX 2 3 branches type Pull box M NET Branch BOX 1 5 branches type L B1 B2 M1 M2 L N TB3A N TB3B TB3C TB3 TB2B TB5 TB3A TB3B TB3C TB2B TB5 L N M1 M2 S E B C C C C C C C C M1 M2 S S1 S2 S3 S1 S2 S3 S1 S2 S3 S1 S2 S3 S1 S2 S3 S1 S2 S3 S1 S2 S...

Page 11: ...power supply method Outdoor unit Power supply from outdoor unit Separate power supply 1 phase power supply Unnecessary Necessary 3 phase power supply Necessary Necessary 9 Recommended Connection Method When connecting one indoor unit to the branch box connect it to TB3A When connecting 2 indoor units connect them to TB3A and TB3B When connecting 3 indoor units connect them to TB3A TB3B and TB3C Co...

Page 12: ...28 30 mA Current sensitivity 5 When the ecodan is connected the master controller G 50A etc cannot be connected 6000 600 60 10 Tripping Time s 1 0 1 0 01 1 2 Rated Tripping current x 3 4 6 8 C 10 20 SAMPLE Sample chart Total operating current of the indoor unit Minimum wire thickness mm Capacity A Fuse A Breaker for wiring NFB Ground fault interrupter 1 Main cable Branch Ground F0 16A or less 2 1 ...

Page 13: ...igit Example When setting the address to 3 set the ones digit to 3 and the tens digit to 0 When setting the address to 25 set the ones digit to 5 and the tens digit to 2 Example When setting the address of the branch BOX to 3 an address is assigned to each indoor unit starting with Unit A as shown below no matter if each indoor unit is con nected SW1 1 5 ON Indoor Unit A Address 3 Indoor Unit B Ad...

Page 14: ...rigerant pipes and the indoor outdoor unit connecting wires To check for improper wiring perform the test run for each indoor unit individually Caution Use the remote controller to operate the indoor unit The following symptoms are not malfunctions Symptom Cause Indoor unit LED display Indoor unit does not operate even if set to cooling heating operation The cooling heating operation cannot be ope...

Page 15: ...ortuguese Branch Avda do Forte 10 2799 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 Şe...

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