User manual LG GR-T252GVASWQMHE

[. . . ] 3 SELECTION OF INSTALLATION PLACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 INSTALLATION OF INDOOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DRAIN PIPING WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 REFRIGERANT PIPING AND EVACUATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Be sure to charge the refrigerant of specified amount. · A personnel who charged the refrigerant should write down the pipe length and the added refrigerant amount in the nameplate attached to the service panel of the outdoor unit. It is necessary to troubleshoot the compressor and refrigeration cycle malfunction. REQUIREMENT Apply the thermal insulation to the pipe connecting section of the indoor unit securely up to the root without exposure of the pipe. (The pipe exposed to the outside causes water leak. ) English-15 15 6 ELECTRICAL WORK WARNING 1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external tension to the wires do not affect the connecting part of the terminals. Incomplete connection or fixation may cause a fire, etc. 2. (Grounding work) Do not connect the earth wire to gas pipe, city water pipe, lightning rod, or the earth wire of telephone. Incomplete grounding causes an electric shock. 3. For electric work, strictly follow the Local Regulation in each country and the Installation Manual, and use an exclusive circuit. Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire. CAUTIONS · This indoor unit has no power cord. · If incorrect/incomplete wiring is carried out, it will cause an electrical fire or smoke. · Be sure to install an earth leakage breaker that is not tripped by shock waves. If an earth leakage breaker is not installed, an electric shock may be caused. · Mount the cover of the electric parts box without pinching wires. (Mount the cover after wiring on the ceiling panel. ) Screws Electric parts box P board . C. Screw Cover of electric parts box Hooking section Thermal insulation to wiring connecting port Indoor/Outdoor crossover wire/ Remote controller terminal block AB Adhered surface Heat insulator A Power supply terminal block 123 Notched section A B 1 2 3 Cord clamp Heat insulator B Wiring on the ceiling panel As per the Installation Manual of the ceiling panel, connect the connector (2P: Red) of the ceiling panel to the connector (5P: White) onto the P board . C. English-17 5P connector (White) Cord clamp Wire from ceiling panel 17 Wiring 1. Remove a screw and then remove cover of the electric parts box. Match wire colors with terminal numbers on indoor and outdoor units' terminal blocks and firmly screw wires to the corresponding terminals. Connect the ground wires to the corresponding terminals. Fix cover of the parts box and the terminal block surely with the fixing screws. Remote Controller Wiring · Strip off approx. · For single system, use non polarity, 2 core wire is used for wiring of the remote controller. (0. 5 to 2. 0mm² wires) · For the synchronous triple system, use 2 core shield wire (Vinyl cord for microphone 0. 5 to 2. 0mm²) to conform to the EMC standard. n Wiring diagram Terminal block for remote controller wiring of indoor unit A B Terminal block Make a loop on the wire for margin of the length so that the electric parts box can be taken out during servicing. Remote controller unit Remote controller wire (Field supply) 10 123 10 · For details of wiring/installation of the remote controller, refer to the Installation Manual attached to in the remote controller. <Single system> 70 50 Remote controller Remote controller wiring Indoor side A 1 1 2 3 Earth line Connecting cable B 2 3 Indoor/Outdoor connecting wires 1 2 N 3 Outdoor side L A B 220 ­ 240V ~ <Synchronous twin system> Remote controller Remote controller wiring A Indoor side 1 Indoor/Outdoor connecting wires 1 Outdoor side L N 2 3 Indoor power inter-unit wiring 2 3 B Indoor side A 1 B 2 3 Remote controller inter-unit wiring 220 ­ 240V ~ 18 English-18 6 ELECTRICAL WORK <Synchronous triple system> WARNING For synchronous triple systems, perform the following to conform to EMC standards. Remote controller Remote controller wiring A Indoor side 1 Indoor/Outdoor connecting wires 1 Outdoor side L N 2 3 2 3 B Remote controller inter-unit wiring Remote controller inter-unit wiring A Indoor side 1 Indoor power inter-unit wiring B Indoor side 2 3 A 1 Indoor power inter-unit wiring B 2 3 220 ­ 240V ~ · Use 2 core shield wire (Vinyl cord for microphone 0. 5 to 2. 0 mm² or more) for the remote controller wiring in the synchronous triple system to prevent noise problems. Be sure to connect both ends of the shield wire to the earth. · Connect earth wire for each indoor unit in the synchronous triple system. English-19 19 7 TEST RUN Before test run · Before turning on the power supply, carry out the following procedure. [. . . ] compressor -- Short-circuit protection for compressor drive circuit devices (G-Tr/IGBT) was activated. Outdoor unit P board, high-pressure switch . C. --- Compressor motor position error was detected. Another indoor unit in the group is raising an alarm. 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