Fujitsu UTP-RU04EH Installation Manual
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Fujitsu UTP-RU04EH Installation Manual

Vrf system rb unit
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INSTALLATION MANUAL
VRF system RB unit
For authorized service personnel only.
MANUEL D'INSTALLATION
Unité dérivation de réfrigérant système VRF
Pour le personnel agréé uniquement.
MANUAL DE INSTALACIÓN
Unidad de derivación de refrigerante del sistema VRF
Únicamente para personal de servicio autorizado.
UTP-RU04EH
PART No. 9366247098-01

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Summary of Contents for Fujitsu UTP-RU04EH

  • Page 1 VRF system RB unit For authorized service personnel only. MANUEL D’INSTALLATION Unité dérivation de réfrigérant système VRF Pour le personnel agréé uniquement. MANUAL DE INSTALACIÓN Unidad de derivación de refrigerante del sistema VRF Únicamente para personal de servicio autorizado. UTP-RU04EH PART No. 9366247098-01...

  • Page 2: Table Of Contents

    INSTALLATION MANUAL 1.2. SPECIAL PRECAUTIONS PART No. 9366247098-01 VRF system RB unit When Wiring Contents ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM. SAFETY PRECAUTIONS ..................1 1.1. IMPORTANT! Please read before starting............1 •...

  • Page 3: About This Product

    2.2. Special tools for R410A WARNING Never touch electrical components immediately after the power supply has been WARNING turned off. Electrical shock may occur. After turning off the power, always wait 10 minutes or more before touching electrical components. To install a unit that uses the R410A refrigerant, use dedicated tools and piping materials that have been manufactured specifi...

  • Page 4: Optional Parts

    2.4. Optional parts 4. PIPING SPECIFICATIONS The following optional parts are available. For details of piping specifi cations, refer to the outdoor unit installation manual. Description Model No. Application For external input 5. INSTALLATION WORK UTY-XWZXZ6 (Dry contact terminal / CNA01) External connect kit For external input UTY-XWZXZB...

  • Page 5: Hanger Bolt Installation

    5.2.1. Ceiling hanging 5.3. Hanger bolt installation Product mass [lbs (kg)] Be sure to install so that the top side faces up. UTP-RU04EH 69 (31.5) WARNING Unit: in (mm) 5-7/8 (150) Take into consideration whether the place you install the main unit can fully withstand 6-7/8 (174) its weight, and, if necessary, install a hanger bolt after reinforcing with a beam.

  • Page 6: Pipe Installation

    5.6.2. Fix the unit (When hanging from the ceiling) Table 1) Indoor unit total capacity and RB unit upstream side con- nection pipe sizes (1) Attach the hanger (accessories) to the hanger bolts as shown in the overview diagram below. (in 4 places) Upstream of RB unit Total capacity of (2) After checking that the equipment is horizontal, fi...

  • Page 7: Pipe Connection

    6.3. Pipe connection 7. ELECTRICAL WIRING 6.3.1. Brazing 7.1. Safety precautions for electrical wiring CAUTION If air or different type of refrigerant enters the refrigeration cycle, the internal pres- sure in the refrigeration cycle will become abnormally high and prevent the unit WARNING from exerting its full performance.

  • Page 8: Wiring

    Model MAX. CKT. BKR (Fuse capacity) (4) Use an appropriate screwdriver to tighten the terminal screws. UTP-RU04EH 1.00 A 15 A Do not use a screwdriver that is too small, otherwise, the screw heads may be MCA : Minimum Circuit Ampacity damaged and prevent the screws from being properly tightened.
  • Page 9 7.3.3 Wiring method The wiring example for RB units ,outdoor units and indoor units is shown in the fi gure. Breaker shall be located in sight from and readily accessible from all RB units. Breaker 1: Ground Fault Equipment Breaker (GFEB) Breaker 2: Maximum Circuit Breaker (MAX.

  • Page 10: Field Setting

    7.3.4 Work procedure Detail A : Power supply cable (1) Remove the control box cover. (3 screws) Conduit connector Lock nut Wiring connecting port Earth (Ground) Lock nut (2) Connect the transmission cable to the transmission cable terminal. (3) Firmly attach the transmission cables using the accessory cable ties. (Up to 5 loca- tions) (4) Attach the conduit connector on the wiring connecting port.

  • Page 11: Address Setting

    8.2. Address setting 9. EXTERNAL INPUT (1) RB unit address ● RB unit can be switched cooling priority and heating priority by using RB When connecting multiple RB units to 1 refrigerant system, set the address at RB unit PC board CNA01 or CNA02. AD SW.

  • Page 12: Test Run

     Apply voltage terminal ([CNA02])  10. TEST RUN When a power supply must be provided at the input device you want to connect, use the Apply voltage terminal ([CNA02]) 10.1. Test run using Outdoor unit (PC board) DC power sup- •...

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