Daikin FXAQ12MVJU Operation Manual
Vrv system inverter air conditioners
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- Service manual (312 pages) ,
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- Serveice manual (273 pages)
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Table of Contents
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Summary of Contents for Daikin FXAQ12MVJU
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Page 1: Operation Manual
OPERATION MANUAL SYSTEM Inverter Air Conditioners MODELS Wall-mounted type FXAQ12MVJU FXAQ18MVJU FXAQ24MVJU 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. -
Page 2: Table Of Contents
1. SAFETY CONSIDERATIONS ..................1 2. BEFORE INSTALLATION ....................3 3. SELECTING INSTALLATION SITE ................5 4. INDOOR UNIT INSTALLATION ..................6 5. REFRIGERANT PIPING WORK .................. 10 6. DRAIN PIPING WORK....................12 7. ELECTRIC WIRING WORK ..................13 8. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER ....14 9. -
Page 3: Safety Considerations
Installation manual VRV SYSTEM Inverter Air Conditioners CONTENTS 1. SAFETY CONSIDERATIONS ..................1 2. BEFORE INSTALLATION ....................3 3. SELECTING INSTALLATION SITE ................5 4. INDOOR UNIT INSTALLATION ..................6 5. REFRIGERANT PIPING WORK .................. 10 6. DRAIN PIPING WORK....................12 7. - Page 4 • Carry out the specified installation work after taking account of strong winds, typhoons or earthquakes. Improper installation work may result in the equipment falling and causing accidents. • Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by an authorized personnel according to local laws and regulations and this installa- tion manual.
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Page 5: Before Installation
NOTE • Install the indoor and outdoor units, power supply wiring and connecting wires at least 3.5ft. away from televisions or radios in order to prevent image interference or noise. (Depending on the radio waves, a distance of 3.5ft. may not be sufficient enough to eliminate the noise.) •... -
Page 6: Optional Accessories
2-1 ACCESSORIES Check the following accessories are included with your unit. (1) Installation (2) Attachment screws (3) Paper pattern Name (4) Insulating tape panel for the installation panel for installation 8 pcs. → FXAQ12 type Quantity 1 set 1 pc. 1 pc. -
Page 7: Selecting Installation Site
2. Items to be checked at time of delivery * Also review the “SAFETY CONSIDERATIONS” Items to be checked Check Did you explain about operations while showing the operation manual to your customer? Did you hand the operation manual over to your customer? Points for explanation about operations The items with WARNING and... -
Page 8: Indoor Unit Installation
(2) Consider whether the place where the unit will be installed can support the full weight of the unit, and reinforce it with boards and beams, etc. if needed before proceeding with the installation. Also, reinforce the place to prevent vibration and noise before installing. (The installation pitch can be found on the paper pattern for installation (3), so refer to it when con- sidering the necessity for reinforcing the location.) (3) The indoor unit may not be directly installed on the wall. - Page 9 (c) Secure the installation panel (1) to the wall using either screws or bolts. • If using the attachment screws for the installation panel (2), attach using at least 4 screws on either side (for a total of 8 screws (12 type), 9 screws (18, 24 type)) of the recommended installation cleat position on the included paper pattern for installation (3).
- Page 10 (5) Point the pipe in the direction it will be passed out. For bottom-right and back-right piping (Refer to Fig. 6) • Wrap the drain hose and the refrigerant piping together with the insulat- ing tape (4) so that the drain hose is below the refrigerant piping. For left, bottom-left, and back-left piping •...
- Page 11 (6) Hook the indoor unit onto the installation panel. (Refer to Fig. 9) • Placing buffering material between the wall and the indoor unit at this time will make work easier. For bottom-right and back-right piping • Pass the drain hose and the refrigerant piping to the wall. (7) Pass power supply wiring and ground wiring threaded through conduit (For connecting the con- duit to the unit, see “8-1 HOW TO CONNECT WIRINGS”), and remote controller wiring through the wiring guide in through the back of the indoor unit and to the front.
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Page 12: Refrigerant Piping Work
I When screwing in the indoor unit • Remove the front grill. (Refer to Fig. 7) • Secure the indoor unit to the installation panel (1) with the securing screws (6). (Refer to Fig. 11) 5. REFRIGERANT PIPING WORK 〈For refrigerant piping of outdoor units, see the installation manual attached to the outdoor unit.〉 〈Execute heat insulation work completely on both sides of the gas piping and the liquid piping. - Page 13 • Refer to Table 1 for tightening torque. Table 1 Pipe size Tightening torque (ft-lbf) Flare dimensions A (in.) Flare shape (in.) φ 1/4” 10.5 – 12.7 0.343 – 0.358 φ 3/8” 24.1 – 29.4 0.504 – 0.520 φ 1/2” 36.5 –...
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Page 14: Drain Piping Work
CAUTION Be sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping may cause condensate or burns if touched. 6. DRAIN PIPING WORK (1) Install the drain piping. (Refer to Fig. 16) •... -
Page 15: Electric Wiring Work
• Lightning rods or telephone ground wires: might cause abnormally high electric potential in the ground during lightning. 7-2 ELECTRICAL CHARACTERISTICS Units Power supply Fan motor Model Volts Voltage range FXAQ12MVJU Max. 253 FXAQ18MVJU 208-230 Min. 187 FXAQ24MVJU MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A) W: Fan Motor Rated Output (W);... -
Page 16: Wiring Example And How To Set The Remote Controller
Remote controller wiring Power supply wiring Transmission wiring Model Size Wire Size Field fuses FXAQ12MVJU Size must FXAQ18MVJU comply with Sheathed wire (2 wire) AWG18-16 local codes. FXAQ24MVJU • Allowable length of transmission wiring and remote controller wiring are as follows. - Page 17 CAUTION Be sure to attach the sealing material and putty (field supplied) to hole of wiring to prevent the infiltration of water as well as any insects and other small creatures from outside. Otherwise a short-circuit may occur inside the electric parts box. When clamping the wirings, be sure no tension is applied to the wire connections by using the included clamp.
- Page 18 [ PRECAUTIONS ] 1. Use round crimp-style terminals for connecting wires to the power supply terminal block. (Refer to Fig. 23) If unavailable, observe the following points when wiring. • Do not connect wires of different gauge to the same power supply terminal. (Looseness in the connection may cause overheating.) •...
- Page 19 8-2 WIRING EXAMPLE • Fit the power supply wiring of each unit with a switch and fuse as shown in the drawing. COMPLETE SYSTEM EXAMPLE (3 systems) 1. When using 1 remote controller for 1 indoor unit. (Normal operation) 2. For group control or use with 2 remote controllers...
- Page 20 3. When including BS unit NOTE 1. A single switch can be used to supply power to units on the same system. However, branch switches and branch circuit breakers must be selected carefully. 2. Do not ground the equipment on gas pipes, water pipes, lightning rods or telephone ground wires. Improper grounding could result in electric shock.
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Page 21: Field Settings
8-4 COMPUTERISED CONTROL (FORCED OFF AND ON/OFF OPERATION) (1) Wire specifications and how to perform wiring • Connect the input from outside to terminals T1 and T2 of the terminal block (6P). Wire specification Sheathed vinyl cord or cable (2 wire) Gauge AWG18-16 Length... -
Page 22: Test Operation
9-1 SETTING AIR FILTER SIGN • Remote controllers are equiped with liquid crystal display air filter signs to display the time to clean air filters. • Change the SECOND CODE NO. according to Table 3 depending on the amount of dirt or dust in the room. (SECOND CODE NO. - Page 23 Daikin US Corporation 375 Park Avenue, Suite 3308 New York, NY 10152 �� www.daikinac.com info@daikinac.com �� 3PN01417-9V EM04A013 (0407) HT...