Mitsubishi Electric MFZ-KA09NA Installation Manual
Floor type
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- Operating instructions manual (32 pages) ,
- Installation manual (25 pages) ,
- Operating instructions manual (12 pages)
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Installation Manual
FLOOR TYPE AIR CONDITIONERS
MFZ-KA09NA MFZ-KA12NA MFZ-KA18NA
For INSTALLER
INstAllAtIoN MANuAl
English
• This manual only describes the installation of indoor unit.
When installing the outdoor unit, refer to the installation manual of outdoor unit.
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Summary of Contents for Mitsubishi Electric MFZ-KA09NA
- Page 1 FLOOR TYPE AIR CONDITIONERS MFZ-KA09NA MFZ-KA12NA MFZ-KA18NA For INSTALLER INstAllAtIoN MANuAl English • This manual only describes the installation of indoor unit. When installing the outdoor unit, refer to the installation manual of outdoor unit.
- Page 2 Required Tools for Installation CONTENTS Phillips screwdriver 5/32 in. (4 mm) hexagonal Level wrench 1. BEFORE INSTALLATION ........1 When installing multi units, refer to the Scale Flare tool for R410A 2. INDOOR UNIT INSTALLATION ......3 installation manual of the multi unit for Utility knife or scissors Gauge manifold for R410A 3. PURGING PROCEDURES, LEAK TEST, AND outdoor unit installation. 3 in. (75 mm) hole saw Vacuum pump for R410A TEST RUN ............7 Torque wrench Charge hose for R410A 4. PUMPING DOWN ..........7 Wrench (or spanner) Pipe cutter with reamer 1. BEFORE INSTALLATION 1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY • Be sure to read these safety precautions and instructions. • Be sure to observe the warnings and cautions specified here. • After reading this manual, be sure to store it with the OPERATING INSTRUCTIONS for future reference. • Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system. WARNING (Could lead to death or serious injury.) n Do not install the unit by yourself (user).
- Page 3 1-3. SPECIFICATIONS 1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR WIRE CON- Electrical specifications NECTION MODEL MFZ-KA09NA MFZ-KA12NA MFZ-KA18NA • Power should be taken from an exclusive branched circuit. INDOOR UNIT • Wiring work should be based on applicable technical standards. Power supply (V, PHASE, Hz) 208/230, 1, 60 • Wiring connections should be made following the diagram. • Securely tighten screws. UNIT AMPS (A) <15 Connecting wires and the ground wire • Use solid conductor AWG14 or stranded conductor AWG14. • Use double insulated copper wire with 600 V insulation. Outside Minimum wall Insulation • Use copper conductors only. Insulation diameter thickness...
- Page 4 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 by [->] in the illustration. For added support, fixing screws may also be installed in other holes. 2-2. HOLE DRILLING Wall 1) Determine the wall hole position. 2) Drill a ø3 in. (ø75 mm) hole. The outdoor side should be 3/16 to 9/32 in. (5 to 7 mm) lower than the indoor ø3 in. (ø75 mm) 3/16-9/32 in. (5-7 mm) side. 3) Insert wall hole sleeve (C). Indoor side Outdoor side HOLE POSITIONS inch (mm) FOR RIGHT DOWNWARD OR LEFT DOWNWARD PIPING (The drawing below is a view of the bottom of the indoor unit from above.) When the unit is installed on the wall. When the unit is installed on the floor. FOR LEFT PIPING FOR RIGHT PIPING FOR REAR OR LEFT-REAR PIPING (The drawing below is a front view of the indoor unit installation location.) 1-3/4(45) 4-5/8(118) Pipe connecting port (Gas) 1-3/8(35) 3-3/4(96) Pipe connecting port (Liquid) 2-3. INDOOR UNIT PREPARATION Remove the front panel of the indoor unit.
- Page 5 2-4. FLARE CONNECTION No good Good 1) Cut the copper pipe as straight as possible with a pipe cutter. (Fig. 1, 2) Copper 2) Remove all burrs from the cut section of the pipe, ensuring that precautions are pipe taken to avoid getting metal shavings into the piping. (Fig. 3) 3) Remove flare nuts attached to indoor and outdoor units, then put them on pipe. 4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension shown in the Tilted Uneven Burred table. Select A inch (mm) from the table according to the tool you use. Fig. 1 Fig. 2 5) Check • Compare the flared work with Fig. 6. • If flare is defective, cut off the section and repeat procedure. Flaring tool Copper pipe Burr Spare reamer A inch (mm) Tightening torque Pipe Nut Pipe cutter diameter Clutch type Clutch type Wing nut inch ft•lb inch tool tool type tool N•m (mm) (kgf•cm) (mm) for R410A...
- Page 6 2-8. CONNECTING WIRES FOR INDOOR UNIT Note: When the indoor unit is powered from the outdoor unit, depending on local code, a disconnect switch needs to be installed to a power supply circuit. 1) Remove the electrical cover. 2) Remove the conduit plate. 3) Attach the conduit pipe to the conduit plate with the lock nut. The indoor/outdoor unit connecting wire (A) appearing from the inside of conduit pipe should be less than 7/8 in. (23 mm). (Fig. 1) 4) Process the end of ground wire (Fig. 2). Connect it to the ground terminal of the electrical parts box. 5) Process the end of indoor/outdoor unit connecting wire (A) (Fig. 2). Attach it to the terminal block. Be careful not to make mis-wiring. Attach the wire to the terminal block securely so that its core cannot be seen, and no external force affects the connecting section of the terminal block. 6) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened. 7) Reinstall the conduit plate. 8) Reinstall the electrical cover. Remark: INDOOR UNIT Grounding * A disconnect switch (15A Terminal block terminal** MAX) should be required. Check the local code. Electrical cover ** Use a ring tongue terminal in order to connect a ground Disconnect Screw wire to terminal. switch* 208/230 VAC 1 phase, 60 Hz OUTDOOR UNIT Power supply 208/230 VAC, 1 phase 2 wires. Screw Terminal block 60 Hz Electrical box S1 S2 S3 Screw Lock nut Ground...
- Page 7 2-10. DRAIN PIPING • The drain hose should point downward for easy drain. (Fig. 1) Do not make drain piping as shown below. Drain hose Drain hose Hard vinyl chloride 27-9/16 in. pipe I.D. 1-3/16 in. Accumulated (70 cm) or Do not raise Downward (30 mm) drain water more slope Tip of drain hose dipped Soft hose Insert in water I.D. 19/32 in. securely (15 mm) Different diameter joint Water Water Water At least Fig. 1 Fig. 2 Fig. 3 Waving Ditch leakage leakage leakage 1-31/32 in.
- Page 8 2-12. I NDOOR UNIT INSTALLATION 26-17/32(674) • Hook the top of the indoor unit on the indoor unit mounting bracket (7). • Use the included wood screws (9) and washer (10), and fasten the indoor unit at 2 locations( ) each at the top and the middle of the unit. 2-13. F RONT PANEL INSTALLATION 1) Open the horizontal vane for the upper air outlet. 2) Fit the front panel onto the indoor unit from the front, and then push the upper and lower areas that are marked with arrows. 3) Push the areas below the upper air outlet and the areas above and below the lower air outlet that are marked with arrows. 4) After installing the front panel, install the 2 screws below the upper air outlet. 3. PURGING PROCEDURES, LEAK TEST, AND TEST RUN 3-1. PURGING PROCEDURES AND LEAK TEST Refer to the procedures indicated in the installation manual of the outdoor unit.