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Mitsubishi Electric MFZ-KJ25VE Installation Manual
Mitsubishi Electric MFZ-KJ25VE Installation Manual

Mitsubishi Electric MFZ-KJ25VE Installation Manual

Floor type air conditioners
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FLOOR TYPE AIR CONDITIONERS
MFZ-KJ25VE MFZ-KJ35VE
MFZ-KJ50VE
For INSTALLER
InstallatIon Manual
English
• When installing multi units, refer to the installation manual of the multi unit for
outdoor unit installation.

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Summary of Contents for Mitsubishi Electric MFZ-KJ25VE

  • Page 1 FLOOR TYPE AIR CONDITIONERS MFZ-KJ25VE MFZ-KJ35VE MFZ-KJ50VE For INSTALLER InstallatIon Manual English • When installing multi units, refer to the installation manual of the multi unit for outdoor unit installation.
  • Page 2: Table Of Contents

    Required tools for Installation ContEnts Wrench (or spanner) Phillips screwdriver Model names are indicated in 1-3. 1. BEFORE INSTALLATION ........1 Level 4 mm hexagonal wrench When installing multi units, refer to 2. INDOOR UNIT INSTALLATION ......3 Scale Flare tool for R410A the installation manual of the multi 3. OUTDOOR UNIT INSTALLATION .......6 Utility knife or scissors Gauge manifold for R410A unit for outdoor unit installation.
  • Page 3: Installation Diagram

    20/30 m Rated Voltage Frequency Indoor unit Outdoor unit Gas / Liquid capacity (3-core) connecting wire Max. height difference 12/15 m MFZ-KJ25VE MUFZ-KJ25VE ø9.52 / 6.35 mm Max. number of bends *5, *6 10 A 1.0 mm (0.8 mm) MFZ-KJ35VE MUFZ-KJ35VE 4-core...
  • Page 4: Indoor Unit Installation

    2. InDooR unIt InstallatIon 2-1. FIXInG oF InDooR unIt MountInG BRaCKEt • Find a structural material (such as a stud) in the wall and fix bracket (7) horizontally with fixing screws (8). • To prevent bracket (7) from vibrating, be sure to install the fixing screws in the holes indicated in the illustration. For added support, fixing screws may also be installed in other holes. Wall 2-2. HolE DRIllInG ø65 mm (KJ25/35) 1) Determine the wall hole position. ø75 mm (KJ50) 5 - 7 mm 2) Drill a dia. 65 mm hole (dia. 75 mm for KJ50). The outdoor side should be 5 to 7 mm lower than the indoor side. Indoor Outdoor 3) Insert wall hole sleeve (C).
  • Page 5 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. 2-4-3. EMBEDDING THE INDOOR UNIT IN A WALL 1. Make a hole in the wall. 2.
  • Page 6 FOR LEFT OR LEFT-REAR PIPING Bundle the connecting pipes and drain hose together, and then wrap them in felt tape (11). Molding 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 Cut the lower side panels to coating.
  • Page 7: Outdoor Unit Installation

    1) Remove the panel. 2) Open the cover of the indoor control P.C. board. 3) Join the connecting cable to CN105 and/or CN104 on the indoor control P.C. board. 4) Route the connecting cable through this point in the figure. 5) Attach the cable clamp provided with interface/connector cable to the thick part of the connecting cable with a screw 4×16 as shown in the figure. 6) Close the cover of the indoor control P.C. board. Be careful not to catch the thin part of the connecting cable in the cover. Reinstall the panel. WARNING 3) CN105 3) CN104 Fix the connecting cable at the prescribed position securely. When mounting the Incorrect installation may cause electric shock, fire, and/ or malfunction. interface and the connector cable, use this screw to fix the...
  • Page 8: Purging Procedures, Leak Test, And Test Run

    4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN 4-1. PURGING PROCEDURES AND LEAK TEST 1) Remove service port cap of stop valve on the side of the – Compound pressure gauge outdoor unit gas pipe. (The stop valves are fully closed and 0.101 MPa (for R410A) covered in caps in initial state.) *4 to 5 turns – Stop valve cap 760 mmHg) (Torque 19.6 to...
  • Page 12 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN JG79A867H01...

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Mfz-kj35veMfz-kj50ve