Mitsubishi Electric MXZ-4B80VA Installation Manual
Split-type air-conditioner
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- Manual (586 pages)
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Split-type Air-Conditioner
MXZ-4B80VA
MXZ-5B100VA
INSTALLATION MANUAL
• Refer to the installation manual of each indoor unit for indoor
unit installation.
IMPORTANT NOTES
TO COMPLY WITH THE REQUIREMENTS OF AUSTRALIAN STANDARD
AS/NZS 3000 ELECTRICAL INSTALLATIONS (Wiring Rules),
THE ELECTRICAL WIRING REQUIRED BETWEEN THE INDOOR AND
OUTDOOR UNITS MUST BE INSTALLED BY A LICENCED ELECTRICAL
CONTRACTOR.
CONTENTS
1. BEFORE INSTALLATION ..............................................................................2
2. OUTDOOR UNIT INSTALLATION .................................................................5
3. FLARING WORK AND PIPE CONNECTION . ................................................6
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN . ..........................6
5. RELOCATION AND MAINTENANCE ............................................................8
FOR INSTALLER
English
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Table of Contents
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Summary of Contents for Mitsubishi Electric MXZ-4B80VA
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Page 1: Table Of Contents
Split-type Air-Conditioner MXZ-4B80VA MXZ-5B100VA INSTALLATION MANUAL English • Refer to the installation manual of each indoor unit for indoor unit installation. IMPORTANT NOTES TO COMPLY WITH THE REQUIREMENTS OF AUSTRALIAN STANDARD AS/NZS 3000 ELECTRICAL INSTALLATIONS (Wiring Rules), THE ELECTRICAL WIRING REQUIRED BETWEEN THE INDOOR AND OUTDOOR UNITS MUST BE INSTALLED BY A LICENCED ELECTRICAL CONTRACTOR. CONTENTS 1. BEFORE INSTALLATION ................2 2. OUTDOOR UNIT INSTALLATION ..............5 3. FLARING WORK AND PIPE CONNECTION ..........6 4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN ......6 5. RELOCATION AND MAINTENANCE ............8 FOR INSTALLER... -
Page 2: Before Installation
Max. pipe length Max. no. of bends Model Rated Fre- Breaker Indoor/outdoor Max. Refrigerant adjust- Power supply per indoor unit / per indoor unit / Voltage quency capacity connecting wire height difference ment A *7 for multi-system for multi system MXZ-4B80VA 25 m / 70 m 15 m 25 / 70 4-core 230 V 50 Hz 25 A 3-core 2.5 mm 20 g/m 1.0 / 1.5 mm MXZ-5B100VA 25 m / 80 m 15 m 25 / 80 *1 Connect to the power switch which has a gap of 3 mm or more when open *6 Refrigerant pipe bending radius must be 100 mm or more. to interrupt the source power phase. (When the power switch is shut off, it *7 If pipe length exceeds 40 m, additional refrigerant (R410A) charge is re- must interrupt all phases.) quired. (No additional charge is required for pipe length less than 40 m.) -
Page 3: Selecting The Installation Location
1-4. SELECTING PIPE SIZE AND OPTIONAL DIFFERENT-DIAMETER JOINTS The diameter of connection pipes differs according to the type and capacity of indoor units. Match the diameters of connection pipes for indoor and outdoor units according to the following table. • If the diameter of connection pipes does not match the diameter of pipe end connections, use optional different-diameter joints. (Unit: mm) Indoor unit Outdoor unit Capacity Connection pipe size (Wall thickness) : Liquid / Gas 22/25/35 Union size 6.35 (0.8) / 9.52 (0.8) 6.35 (0.8) / 12.7 (1.0) 6.35 (0.8) / 15.88 (1.0) 9.52 (0.8) / 15.88 (1.0) Room (Liquid / Gas) Optional different-diameter joint : Liquid / Gas 6.35 / 12.7 - / MAC-A455JP - / - - / MAC-A456JP PAC-493PI / MAC-A456JP B, C, D, E* 6.35 / 9.52 - / - - / MAC-454JP - / PAC-SG76RJ PAC-493PI / PAC-SG76RJ *MXZ-5B100VA only 1-5. SELECTING THE INSTALLATION LOCATION • Where it is not exposed to strong wind. -
Page 4: Installation Diagram
(B) Indoor/outdoor unit connecting wire* a chemically treated wooden piece 20 mm or thicker between (C) Extension pipe (Refer to 1-4.) the wall and the piping or wrap 7 (D) Wall hole cover to 8 turns of insulation vinyl tape around the piping. (E) Piping tape Open as a rule To use existing piping, perform More than 500 mm Extension drain hose if the front and both COOL operation for 30 minutes (or soft PVC hose, 15 mm inner MXZ-4B80VA sides are open and pump down before removing diameter or hard PVC pipe VP16) the old air conditioner. Remake flare according to the dimension Little for new refrigerant. (G) Refrigeration oil amount (H) Putty More than 100 mm More than 200 mm if there are obstacles to (I) Pipe fixing band 2 to 7 both sides (J) Fixing screw for (I) -
Page 5: Outdoor Unit Installation
2. OUTDOOR UNIT INSTALLATION 2-1. INSTALLING THE UNIT • Be sure to fix the unit’s legs with bolts when installing it. • Be sure to install the unit firmly to ensure that it does not fall by an Fix here with earthquake or a gust. M10 bolts. • Refer to the figure in the right for concrete foundation. • Do not use the drain socket and the drain cap in the cold region. Drain may freeze and it makes the fan stop. Make the setting depth deeper. Make with wider. Anchor leg Anchor both length Anchor both pitch (Unit: mm) Terminal block... -
Page 6: Flaring Work And Pipe Connection
3. FLARING WORK AND PIPE CONNECTION 3-1. FLARING WORK 1) Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2) 2) Completely remove all burrs from the cut cross section of pipe. (Fig. 3) No good Good • Put the end of the copper pipe to downward direction as you Copper remove burrs in order to avoid to let burrs drop in the piping. pipe 3) Remove flare nuts attached to indoor and outdoor units, then put them on pipe having completed burr removal. (Not possible to put them on after flaring work.) Tilted Uneven Burred 4) Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension Fig. 1 Fig. 2 shown in the table. Select A mm from the table according to the tool you use. Flaring tool 5) Check Copper pipe • Compare the flared work with Fig. 6. - Page 7 4-5. CHANGING THE AMPERE LIMIT • Description of the function: With this function, you can change the current that flows in the outdoor unit. Note: Use this function only when the amount of current exceeds the allowed value. [How to change the ampere limit] 1) Be sure to turn off the main power for the air conditioner before making the setting. 2) Make the setting referring to the table below. 3) Turn on the main power for the air conditioner. MXZ-5B100VA MXZ-4B80VA 10.5 A 10.5 A 15.5 A 15.5 A Factory setting Factory setting Full Full...
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Page 8: Test Run
4-6. TEST RUN • Be sure to perform the test run for each unit. Make sure each indoor unit op- erates properly following the installation manual attached to the unit. • If you perform the test run for all indoor units at once, you cannot detect any erroneous connection, if any, of the refrigerant pipes and the indoor/outdoor unit connecting wires. About the restart protective mechanism Once the compressor stops, the restart preventive device operates so the com- pressor will not operate for 3 minutes to protect the air conditioner. Wiring/piping correction function This unit has a wiring/piping correction function which corrects wiring and piping combination. When there is possibility of incorrect wiring and piping combination, and confirming the combination is difficult, use this function to detect and correct the combination by following the procedures below. Make sure that the following is done. • Power is supplied to the unit. • Stop valves are open. Note: During detection, the operation of the indoor unit is controlled by the outdoor unit. During detection, the indoor unit automatically stops operation. This is not a malfunction. Procedure Press the piping/wiring correction switch (SW871) 1 minute or more after turning on the power supply. LED indication during detection: • Correction completes in 10 to 15 minutes. When the correction is completed, its result is shown by LED indication. Details are described in the following 1 (Red) - Page 12 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN JG79A313H01...
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