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INSTALLATION MANUAL
INDOOR UNIT (Duct type)
For authorized service personnel only.
ARXA24GBTH
ARXA30GBTH
ARXA36GBTH
ARXA45GBTH
Refer to the rating label for the serial number,
MADE IN THAILAND
manufactured year and month.
PART NO. 9373385226-02
Table of Contents
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Summary of Contents for Fujitsu AIrstage ARXA24GBTH

  • Page 1 INSTALLATION MANUAL INDOOR UNIT (Duct type) For authorized service personnel only. ARXA24GBTH ARXA30GBTH ARXA36GBTH ARXA45GBTH Refer to the rating label for the serial number, MADE IN THAILAND manufactured year and month. PART NO. 9373385226-02...
  • Page 2: Table Of Contents

    INSTALLATION MANUAL This mark indicates procedures which, if improperly performed, CAUTION might possibly result in personal harm to the user, or damage to PART NO. 9373385226-02 property. VRF system indoor unit (Duct type) Read carefully all security information before use or install the air conditioner. Contents Do not attempt to install the air conditioner or a part of the air conditioner by yourself.
  • Page 3: Accessories

    2.3. Accessories 2.4. Optional parts When connecting the square duct and round duct, use the optional square flange or WARNING round fl ange. Square fl ange For installation purposes, be sure to use the parts supplied by the manufacturer or other prescribed parts.
  • Page 4: Installation Work

    [Top view] (unit : mm) 3. INSTALLATION WORK 500 or more Correct initial installation location is important because it is diffi cult to move unit after it is installed. Indoor unit 3.1. Selecting an installation location Service access WARNING Select installation locations that can properly support the weight of the indoor. Install the units securely so that they do not topple or fall.
  • Page 5 WARNING CAUTION When fastening the hangers, make the bolt positions uniform. When air is taken in from the bottom side, the operating sound of the product will easily eater the room. The distance of is adjustable according to the place of the hanging bolts. Install the product and intake grilles where the affect of the operating sound is small.
  • Page 6: Pipe Installation

    CAUTION 4. PIPE INSTALLATION To prevent people from touching the parts inside the unit, be sure to install grilles on the inlet and outlet ports. The grilles must be designed in such a way that cannot be removed without tools. CAUTION If an intake duct is installed, take care not to damage the temperature sensor (the Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with...
  • Page 7: Installing Heat Insulation

    4.3.1. Flaring Tighten with 2 wrenches. • Use special fl are tool exclusive for R410A. Holding wrench (1) Cut the connection pipe to the necessary length with a pipe cutter. (2) Hold the pipe downward so that cuttings will not enter the pipe and remove any Flare nut Torque wrench burrs.
  • Page 8 (Right side) Applying 240 mm area of adhesive Joint pipe Hard PVC side (locally purchased) Drain pipe (VP25) (locally purchased) 4 mm or less Wrap the Drain hose insulation around the drain hose connection. Liquid pipe Drain hose insulation Gas pipe (Accessories) Drain port Drain pan...
  • Page 9: Electrical Wiring

    6.1. Electrical requirement 6. ELECTRICAL WIRING Voltage rating 230 V WARNING Operating range 198 to 264 V (50 Hz) Electrical work must be performed in accordance with this Manual by a person certifi ed 198 to 253 V (60 Hz) under the national or regional regulations.
  • Page 10: Wiring Method

    WARNING 6.2. Wiring method When using solid core cables, do not use the ring terminal. If you use the solid core cables with the ring terminal, the ring terminal's pressure bonding may malfunction and Example cause the cables to abnormally heat up. Outdoor unit or RB unit *1 B.
  • Page 11: Connection Of Wiring

    Tightening torque M3 screw (Transmission /X1, X2) 0.5 to 0.6 N·m (Remote controller /Y1, Y2, Y3) (5 to 6 kgf·cm) CAUTION To peel the fi lm from the lead cable, use a dedicated tool that will not damage the conductor cable. When installing a screw on the terminal block, do not cut the cable by overtightening the screw.
  • Page 12: External Input And External Output (Optional Parts)

    6.5. External input and external output (Optional parts) DC power supply P.C.B 12 to 24V Load Controller PCB resistance CNA01 Output terminal (CNB01) Apply voltage terminal P.C.B (CNA03) Load (CNA01) resistance CNA01 Dry contact terminal (CNA02) P.C.B connected unit (CNA04) CNA01 ●...
  • Page 13 [In the case of “Pulse” input] ● When connecting with unit equipped with a power supply Connector Input signal Command P.C.B OFF → ON Operation Connected CNA01 or CNA02 device 1 OFF → ON Stop Connected device 2 * The last command has priority. Connected * The indoor units within the same remote controller group operates in the same mode.
  • Page 14: Remote Sensor (Optional Parts)

    6.6. Remote sensor (Optional parts) 6.7. IR receiver unit (Optional parts) • For the installation method, please refer to the INSTALLATION MANUAL of remote • For the installation method, please refer to the INSTALLATION MANUAL of IR receiver sensor. unit. Connection methods Connection methods •...
  • Page 15: Drain Pump Unit (Optional Parts)

    6.8. Drain pump unit (Optional parts) 7.1. Setting the address Manual address setting method • For the installation method, please refer to the INSTALLATION MANUAL of drain pump • If the receiver unit is attached, the indoor unit address and the refrigerant circuit unit.
  • Page 16: Custom Code Setting

    (3) Remote controller address 7.3. Static pressure mode i) 3-wire type Rotary switch (RC AD SW)...Factory setting “0” When connecting multiple indoor units to 1 standard wired remote controller, set the CAUTION address at RC AD SW in sequence from 0. If the applicable static pressure does not match the static pressure mode, the static Setting Setting range...
  • Page 17: Function Setting

    7.4. Function setting 8. TEST RUN • FUNCTION SETTING can be performed with the wired or wireless remote controller. 8.1. Test run using Outdoor unit (PCB) (The remote controller is optional equipment) • Refer to the wired or wireless remote controller manual for detailed setting information. •...
  • Page 18: Error Codes

    Wired remote controller display 10. ERROR CODES UTY-RNK* / UTY-RNKYT (3-wire type) If you use a wired type remote controller, error codes will appear on the remote control- Error code ler display. If you use a wireless remote controller, the lamp on the photodetector unit will output error codes by way of blinking patterns.

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