User manual LG LW-B0962CS

[. . . ] With the recent increase in the number of high concentration buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared with conventional individual air conditioners. If a single unit of the multi conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an emergency, measures can be made before injury can occur). In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device. [. . . ] or less. [NOTE] This installation is applied to the case less than 10th floor to avoid the influence of locally strong wind blowing along a street of very tall buildings. 86 9. ELECTRIC WIRING WARNING Using the exclusive circuit, a person qualified for electrician shall work for the electric work in conformance with the regulations of the local electric company and the Installation Manual. If there is capacity shortage of the power circuit or incomplete electric work, a fire or electric shock is caused. For cabling, use the specified cables and connect them securely so that external force of cable does not transmit to the terminal connecting section. If connection or fixing is incomplete, a fire is caused. Be sure to connect the earth wire. Grounding work is necessary based upon a law. If the earth grounding is incomplete, an electric shock is caused. Do not connect earth wire to gas pipe, lightning rod, or earth wire of telephone. CAUTION Be sure to attach an earth leakage breaker; otherwise an electric shock may be caused. To Disconnect the Appliance from Main Power Supply. This appliance must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm. REQUIREMENT · Perform wiring of the power supply in conformance with the regulations of the local electric company. · For wiring of power supply in the indoor unit, refer to the Installation Manual of each indoor unit. · Never connect the 220­240V power to the terminal block (U1, U2, U3, U4, U5, U6) for control cables. (Trouble is caused. ) · Arrange the cables so that the electric wires do not come to contact with high-temperature part of the pipe; otherwise coating melts and an accident may be caused. · After connecting cable to the terminal block, take off the trap and then fix the cable with cable clamp. · Store wiring system for control and refrigerant piping system in the same line. · Do not turn on power of the indoor unit until vacuuming of the refrigerant pipe will finish. · For cabling of the power supply of the indoor unit and the inter-unit cabling between indoor and outdoor units, refer to the Installation Manual of indoor unit. 87 9-1. A voltage drop of no more than 2% is also assumed. If the connecting length will exceed the length indicated in the table, select the wire thickness in accordance with indoor wiring standards. · Group Control through a Remote Controller Group control of multiple indoor units (8 units) through a single remote controller switch Indoor unit No. 1 AB No. 2 AB No. 3 AB No. 4 AB No. 7 AB No. 8 AB Remote controller (A. B) Indoor power source single phase 220­240V, 50Hz Earth leakage breaker Switch Pull box FS unit FS unit FS unit FS unit FS unit FS unit FS unit FS unit CAUTION (1) Keep the refrigerant piping system and the indoor-indoor/indoor-outdoor control wiring systems together. (2) When running power wires and control wires parallel to each other, either run them through separate conduits, or maintain a suitable distance between them. (Current capacity of power wires: 10A or less for 300mm, 50A or less for 500mm) 92 9-6. System Wiring Diagram Power supply 3 phase 380-415V 50Hz Earth leakage breaker Power swith Outdoor unit Earth terminal Earth Earth U1 U2 terminal U3 U4 U5 U6 terminal Single phase 220-240V 50Hz Central remote controller U1/U3 Outdoor side U2/U4 Indoor side Indoor unit A Remote controller Indoor unit A Remote controller Indoor unit A Remote controller U1/U2 Earth terminal L N B U1/U2 Control wiring FS unit CN02 Power line CN01 Earth terminal Earth terminal L B U1/U2 Control wiring FS unit CN02 Power line CN01 Earth terminal Earth terminal L B Earth terminal N Earth terminal N Control FS unit wiring CN02 Power line CN01 Earth terminal CN81 Power supply Single phase 220-240V 50Hz Earth leakage breaker Power switch Earth terminal Pull Box Pull Box NOTE : Control wire and power line wire between FS unit and indoor unit are the accessary parts of FS unit. (Wire length : 6m) If the length between indoor and FS unit exceeds 5m, connect by using the connection cable kit sold separately (RBC-CBK15FE). 93 9-7. Connection of Power Supply Cable with Control Wire Insert power supply cable and control wire after removing knockout of the piping/wiring panel at front side of the outdoor unit. Knockout for power supply cable Knockout for control wire Piping/wiring panel When insert power supply cable and control wire, protect power supply cable and control wire from edge after removing knockout. n Power supply cable 1. Connect the power supply cables and earthing wire to the terminal block of the power supply through a notched section at side of the electric parts box, and fix with a clamp. Bundle the power supply cables using the hole so that they are not out of the notched section of the electric parts box. n Control wire 1. Connect the control wire between indoor and outdoor units and the control wire between outdoor units to (U1 to U4) terminal section through a hole at side of the electric parts box, and fix with a clamp. Use the control wire with 2-core shield wire (1. 25mm² or more) in order to prevent noise trouble. [. . . ] of indoor units Communication circuit error between indoor/ outdoor (Detected at outdoor side) Duplicated indoor addresses Duplicated main remote controllers Communication error between indoor MCU Remote controller Remote controller Indoor Indoor ¤ ¤ ¤ l l l l E06 E06 04 I/F -- E08 E09 E10 E07 E08 -- -- -- 96 99 CF I/F Indoor / I/F Remote controller Indoor ¤ ¤ ¤ ¤ l l E12 E12 42 Automatic address start error I/F E15 E16 E18 E19 E15 E16 -- E19 42 89 97, 99 96 ¤ ¤ l Indoor is nothing during automatic addressing Capacity over / No. of connected indoor units Communication error between indoor units Outdoor header units quantity error I/F I/F Indoor I/F ¤ l l l l l ¤ ¤ ¤ ¤ ¤ E20 E20 42 Other line connected during automatic address Sending error in communication between outdoor units Decrease of No. connected outdoor units I/F E23 E26 E23 E26 15 15 I/F I/F E31 E31 CF IPDU communication error I/F 166 Check code Main remote controller display F01 F02 F03 F04 F05 F06 F07 F08 F10 F12 F13 F15 F16 F23 F24 F29 F31 H01 -- -- -- F04 F05 F06 F07 F08 -- F12 F13 F15 F16 F23 F24 -- F31 H01 Outdoor 7-segment display Auxiliary code -- -- -- -- -- -- -- -- -- 01: TS1 sensor error 02: TS2 sensor error 01: Comp. 2 side -- -- -- 01: 02: 03: 04: TK1 sensor error TK2 sensor error TK3 sensor error TK4 sensor error -- 01: 02: 03: 04: TK1 oil circuit system error TK2 oil circuit system error TK3 oil circuit system error TK4 oil circuit system error -- -- -- 0F 0d 93 19 A1 18 18 1b OC A2 43 18 43 43 43 12 1C IF AI-NET central control display Wireless remote controller Sensor block display of receiving unit Operation Timer Ready Flash Check code name Judging device ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ l l l l l l l l l ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ l ¡ l l l ¡ ¡ ¡ ¡ ¡ ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT SIM SIM Indoor TCJ sensor error Indoor TC2 sensor error Indoor TC1 sensor error TD1 sensor error TD2 sensor error TE1 sensor error TL sensor error TO sensor error Indoor TA sensor error TS1, TS2 sensor error TH sensor error Outdoor temp. 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