User manual LG 73962

[. . . ] Up to 4"73962" can be installed simultaneously in one electric component box. [ Outdoor unit ] [ Electric component box ] 73962 Outdoor unit interface P. C. board WARNING This symbol is used to identify action which, if carried out in an incorrect ignoring this indication, could lead to serious personal injury or even death. CAUTION This symbol is used to identify action which, if carried out in an incorrect ignoring this indication, could lead to serious human injury or property damage. l After installation work has been completed, perform a trial operation of the equipment in order to ensure that it is operating normally, and then hand over to the customer and ask to keep this Safety Precautions and Installation Instruction. WARNING Installation of accessory parts should be performed either by personnel from this dealer where it was purchased or by specialist installation technicians. l Incorrect installation by unqualified personnel can result in electric shock, fire or abnormal operation. [. . . ] Reassembling, repair, or modification of this accessory parts is strictry forbidden. l Failure to follow these directions can result in inflammation, earth leakage or abnormal operation causing electric shock or injury. Use the specified wires for wiring connect the terminals securely fix. To prevent external forces applied to the terminals from affecting the terminals. Do not install a location where flammable gasses may be present. l Fire may break out should flammable gas leak into the vicinity of the parts. Repair of the accessory parts must also carried out by personnel from dealer where it was purcased. Local Supply Operation mode selection control Feature This control can be operated with the operation mode which is permitted by SMC or SMH. Board* 73962 COM SMC COOL SMH Local Supply Connection Cable SMC Input signaal for start SMH Input signal for stop Terminal COOL (SMC) HEAT (SMH) ON OFF ON OFF Input signal Operation All indoor units are started on previous operating. Stops all indoor units. SMC Cooling mode designated input switch SMH Heating mode designated input switch Terminal COOL HEAT (SMC) (SMH) ON OFF OFF OFF ON OFF Selected operation mode Only cooling mode permitted Only heating mode permitted Normal operation Note *1 *1 CAUTION) Be sure to prepare non voltage pulse point of contact for each terminal. This control is conducted when input signal stand up or fall down. (Standing and falling status should be held for 100 msec. or more. ) Supplementary Insulation must be added to user touchable part of switches. Note *1 When the operation select button of remote controller is pushed, " (mode select control )" mark is indicated on the remote controller display. CAUTION) Be sure to prepare non voltage continuous point of contact for each terminal. Supplementary Insulation must be added to user touchable part of switches. Night operation (Sound reduction) control Feature Sound level can be reduced with connecting outdoor interface P. C. Board by restricting commpressor and fan speed. [. . . ] or more. ) Supplementary Insulation must be added to user touchable part of switches. Note *1 When the operation select button of remote controller is pushed, " (mode select control )" mark is indicated on the remote controller display. CAUTION) Be sure to prepare non voltage continuous point of contact for each terminal. Supplementary Insulation must be added to user touchable part of switches. Night operation (Sound reduction) control Feature Sound level can be reduced with connecting outdoor interface P. C. Board by restricting commpressor and fan speed. Board* Connection Cable CN508 PJ17 HEAT *Place this option P. C. board to header outdoor unit. [. . . ]