INSTALLATION MANUAL SYSTEM Inverter Air Conditioners MODELS Ceiling-mounted Duct type FXMQ30MVJU FXMQ36MVJU FXMQ48MVJU Ceiling-mounted Built-in type FXSQ12MVJU FXSQ30MVJU FXSQ18MVJU FXSQ36MVJU FXSQ24MVJU FXSQ48MVJU Read these instructions carefully before installation. Keep this manual in a handy place for future reference. This manual should be left with the equipment owner.
SAFETY CONSIDERATIONS 2 BEFORE INSTALLATION 3 SELECTING INSTALLATION SITE 4 PREPARATIONS BEFORE INSTALLATION 5 INDOOR UNIT INSTALLATION 5 REFRIGERANT PIPING WORK 6 DRAIN PIPING WORK 7 ELECTRIC WIRING WORK 7 WIRING EXAMPLE AND HOW TO SET THE REMOTE CON- TROLLER 8 SELECTING INSTALLATION SITE 11 PREPARATIONS BEFORE INSTALLATION 11 INDOOR UNIT INSTALLATION 12...
VRV SYSTEM Inverter Air Conditioners Installation manual CONTENTS WARNING 1. SAFETY CONSIDERATIONS ......... 2 • Ask your dealer or qualified personnel to carry out 2. BEFORE INSTALLATION ..........3 installation work. Do not try to install the machine by yourself. FXMQ30/36/48MVJU Improper installation may result in water leakage, electric 3.SELECTING INSTALLATION SITE........
• Do not install the air conditioner in the following loca- • Be sure to check the type of R410A refrigerant to be used tions: before installing the unit. (Using an incorrect refrigerant will (a) where a mineral oil mist or an oil spray or vapor is pro- prevent normal operation of the unit.) duced, for example in a kitchen Plastic parts may deteriorate •...
Items to be checked at time of delivery FXMQ30MVJU FXMQ48MVJU Also review the “SAFETY CONSIDERATIONS” FXMQ36MVJU Items to be checked Check Did you explain about operations while showing the operation ACCESSORIES manual to your customer? Did you hand the operation manual over to your customer? Check the following accessories are included with your unit.
(2) Use suspension bolts for installation. Check whether the ceiling is strong enough to support the weight of the unit or not. If there is a risk, reinforce the ceiling before installing the unit. INDOOR UNIT INSTALLATION Installing optional accessories before installing the indoor unit is easier.
REFRIGERANT PIPING WORK Not recommendable but in case of emergency You must use a torque wrench but if you are obliged to GENERAL INSTRUCTIONS install the unit without a torque wrench, you may • For refrigerant piping of outdoor units, see the installation follow the installation method mentioned below.
Brazing referigerant piping • Before brazing local refrigerant piping, nitrogen gas shall be blown through the piping to expel air from the piping. If your brazing is done without nitrogen gas blowing, a large amount of oxide film develops inside the piping, and could cause system malfunction.
Power supply Fan motor Voltage Model Hz Volts MCA MFA range FXMQ30MVJU 208- Max. 253 FXMQ36MVJU Min. 187 FXMQ48MVJU MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A) kW: Fan Motor Rated Output (W); FLA: Full Load Amps (A)
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• Refer to the table below for the tightening torque of the terminal screws. 3. Do not connect wires of different gauge to the same ground- ing terminal. Looseness in the connection may deteriorate protection. 4. Outside of the unit, keep transmission wiring at least 1 15/16”...
FOR THE FOLLOWING ITEMS, TAKE SPECIAL FXSQ12MVJU FXSQ24MVJU FXSQ36MVJU CARE DURING CONSTRUCTION AND CHECK FXSQ18MVJU FXSQ30MVJU FXSQ48MVJU AFTER INSTALLATION IS FINISHED. a. Items to be checked after completion of work 2-1 ACCESSORIES If not properly done, what is Check the following accessories are included with your unit. Items to be checked Check likely to occur...
Note: For other than standard installation, contact your Daikin dealer for details. For mounting air inlet panel with canvas connection • Install this unit where the height of bottom panel is more than 8.2 ft.
FXSQ30 · 36 · 48MVJU 57 7/16 For mounting air inlet panel directly Model A (in.) FXSQ12MVJU FXSQ18MVJU 29 7/8 FXSQ24MVJU 41 11/16 FXSQ30 · 36 · 48MVJU 57 7/16 (2) The fan speed for this indoor unit is preset to provide standard external static pressure.
(2) Check the unit is horizontally level. Connecting the refrigerant piping • When connecting the flare nut, coat the flare both inside and NOTE outside with ester oil and initially tighten by hand 3 ether • The indoor unit is equipped with a built-in drain pump or 4 turns before tightening firmly.
Piping insulation NOTE • Execute heat insulation work completely on both sides of the Do not use flux when brazing refrigerant piping. Therefore, gas piping and the liquid piping. Otherwise, a water leakage can result sometimes. use the phosphor copper brazing filter metal (BCuP) which •...
[ WHEN ELECTRIC WIRING WORK IS NOT FINISHED • Remove the electric parts box lid, connect a power supply and remote controller to the terminals. (Refer to the “HOW TO CONNECT WIRINGS”) A (in.) When canvas duct is installed 13 3/4 – 20 7/8 When air inlet panel is directly installed 10 13/16 •...
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kW: Fan Motor Rated Output (W); FLA:Full Load Amps (A) 8-3 SPECIFICATIONS FOR FIELD SUPPLIED FUSES AND WIRE Remote controller wiring Power supply wiring Transmission wiring Model Field fuses Size Wire Size FXSQ12MVJU FXSQ18MVJU Wire size Sheathed must FXSQ24MVJU comply wire 18-16 FXSQ30MVJU...
WIRING EXAMPLE AND HOW TO SET NOTE THE REMOTE CONTROLLER 1. Use round crimp-style terminals for connecting wires to the power supply terminal block. 9-1 HOW TO CONNECT WIRINGS If unavailable, observe the following points when wiring. • Lower the electric parts box, as shown in the drawing, to •...
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9-2 SETTING OF STATIC PRESSURE CHANGEOVER CONNECTOR • According to the system static pressure requirement, reposi- tion the adaptors of PC board inside the electric parts box as shown in the below drawings. NOTE • The unit is factory set for standard static pressure (X4A) at the time of shipping.
NOTE COMMON ITEM 1. A single switch can be used to supply power to units on the 9-3 WIRING EXAMPLE same system. However, branch switches and branch circuit breakers must be selected carefully. • Fit the power supply wiring of each unit with a switch and 2.
11. TEST OPERATION 9-5 COMPUTERISED CONTROL (FORCED OFF AND ON/OFF OPERATION) Refer to the installation manual of the outdoor unit. (1) Wire specifications and how to perform wiring • The operation lamp of the remote controller will flash when • Connect the input from outside to terminals T1 and T2 of an malfunction occurs.
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Daikin US Corporation 375 Park Avenue, Suite 3308 New York, NY 10152 �� www.daikinac.com info@daikinac.com �� 3P086156-9N EM03A042B (0403) HT...