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UTP-RU08DH
UTP-RU12DH
INSTALLATION MANUAL
For authorized service personnel only.
MANUEL D'INSTALLATION
Unité dérivation de réfrigérant système VRF
Pour les techniciens de service agréés uniquement.
MANUAL DE INSTALACIÓN
Unidad de derivación de refrigerante del sistema VRF
Solo para personal de mantenimiento autorizado.
PART No. 9366247081-01
VRF system RB unit
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Summary of Contents for Fujitsu UTP-RU08DH
- Page 1 For authorized service personnel only. MANUEL D’INSTALLATION Unité dérivation de réfrigérant système VRF Pour les techniciens de service agréés uniquement. MANUAL DE INSTALACIÓN Unidad de derivación de refrigerante del sistema VRF Solo para personal de mantenimiento autorizado. UTP-RU08DH UTP-RU12DH PART No. 9366247081-01...
- Page 2 INSTALLATION MANUAL 1.2. Special precautions PART No. 9366247081-01 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. 1. SAFETY PRECAUTIONS..................1 1.1. IMPORTANT! Please read before starting ............1 •...
- Page 3 WARNING Tool name Contents of change During installation, make sure that the refrigerant pipe is attached fi rmly before you Pressure is huge and cannot be measured with a conventional run the compressor. (R22) gauge. To prevent erroneous mixing of other refrigerants, Do not operate the compressor under the condition of refrigerant piping not attached the diameter of each port has been changed.
- Page 4 RB unit Liquid pipe Suction gas Gas pipe [D] To indoor unit To indoor unit pipe [C] Discharge gas pipe [A] Liquid pipe [E] No more RB unit can be connected downstream of this RB unit (UTP-RU08DH/12DH). Liquid pipe [B] En-3...
- Page 5 5.2.1. Ceiling hanging ■ UTP-RU08DH Be sure to install so that the top side faces up. ■ UTP-RU12DH a= 2-9/16 (65), b= 1-15/16 (50) c= 2-13/16 (72), d= 4-7/16 (113.5) 8-7/16 8-7/16 26 (660) (214.5) (214.5) [Unit: in (mm)] a= 2-9/16 (65), b= 1-15/16 (50) c= 2-13/16 (72), d= 4-7/16 (113.5)
- Page 6 Branches that are not in use should be closed off with the closed-end pipe (accessories). If more (*1) Pinch pipe closed-end pipes than the Service ones provided are required, UTP-RU08DH L-side R-side access (470) (770) procure them locally. UTY-RU12DH (470)
- Page 7 Type B) If connecting 2 or more indoor units downstream of the RB unit Table 4) RB unit pipe size Select the connection pipe from Table 1, based on the Outdoor unit side [in (mm)] Indoor unit side [in (mm)] total capacity of indoor units connected downstream.
- Page 8 6.4.2. Installing cabinet insulation 6.3. Pipe connection If the relative humidity of the area may rise above 80%, install cabinet insulation (acces- 6.3.1. Brazing sories) in the following location: [Unit: in (mm)] 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 from exerting its full performance.
- Page 9 Terminal block A. Current breaker requirements Cable Model MAX. CKT. BKR (Fuse capacity) Do not apply branch wiring. It may result electric shock or fi re. UTP-RU08DH 1.74 A 15 A WARNING UTP-RU12DH 2.62 A 15 A When using solid core cables, do not use the ring terminal. If you use the solid...
- Page 10 (7) Do not fi x 2 power supply cables with 1 screw. Ring terminal Sleeve Screw with spe- cial washer Screw with special washer Ring terminal Ring Cable terminal Cable Terminal block WARNING Use ring terminals and tighten the terminal screws to the specified torques, otherwise, abnormal overheating may be produced and possibly cause heavy damage inside the unit.
- Page 11 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. *1):Cooling only Breaker 1: Ground Fault Equipment Breaker (GFEB) Transmission Outdoor unit Breaker 2: Maximum Circuit Breaker (MAX.
- Page 12 7.3.4. Work procedure Detail M1 : Power supply cable (1) Remove the control box cover. (4 screws) Ground (Earth) Lock nut Wiring connecting port Lock nut Conduit connector (2) Connect the transmission cable to the transmission cable terminal. (3) Firmly attach the transmission cables using the accessory cable ties. RU08DH : Up to 9 locations, RU12DH : Up to 13 locations (4) Attach the conduit connector on the wiring connecting port.
- Page 13 9. EXTERNAL INPUT 8.2. Address setting (1) RB unit address When connecting multiple RB units to 1 refrigerant system, set the address at RB • RB unit can be switched cooling priority and heating priority by using RB AD SW. unit PC board terminal.
- Page 14 Apply voltage terminal (CNA02, CNA102, CNA202, CNA302) 10. MERGING 2 OR 4 BRANCHES When a power supply must be provided at the input device you want to connect, use • An indoor unit with a capacity exceeding 27,000 Btu/h can be connected by the Apply voltage terminal (CNA02, CNA102, CNA202, CNA302) merging 2 or 4 indoor-unit-side outlet branches.
- Page 15 *1) Connection type 1 10.3. Electrical wiring RB unit 10.3.1 Wiring method Branch Branch Branch Branch D or H or L C or G or K B or F or J A or E or I ■ 2-branch merging Indoor unit Indoor unit Indoor unit Transmission...
- Page 16 10.4. Field setting 11. TEST RUN 10.4.1 Address setting 11.1. Test run using outdoor unit (PC board) • For the basic setting method, refer to "8.2. Address setting". • When merging 2 or 4 branches and then manually setting the address, set only the •...
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