22-122-15. System ControlSystem control refers to the link wiring connection for control of simultaneous-operation multi systems,group control, and main-sub remote controller control.2-15-1. Basic wiring diagram 1Single typeBe careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.)(for 3-phase outdoor unit)Example: Using a wireless remote controller with a systemL1L2 LNNL312121 221LN1 2NL3L2L1Fig. 2-10(Wiring procedure)(1)(2)(3)Connect the communication wiring to 1 and 2 on the remote controller wiring terminal plate for units.Connect the inter-unit control wiring to 1 and 2 on the No.1 indoor unit terminal plate, and to 1 and 2 on theoutdoor unit terminal plate. Also connect the inter-unit control wiring between the indoor units.When the indoor and outdoor unit power is turned ON, automatic address setting is performed(when there is only 1 outdoor unit or when the system address is “0”).* If the system address is “0”, automatic address setting is performed when the power is turned ON(in the case shown in Basic wiring diagram 1).This requires approximately 4 – 5 minutes (when the outdoor / indoor unit ratio is 1:1 as shown inBasic wiring diagram 1).During automatic address setting, LED 1 and 2 on the outdoor unit control PCB blink alternately.These LED turn OFF when automatic address setting is completed.(Using a wired remote controller with asingle-type system)1. To connect the remote controller, aremote controller cord is required.Leakage breakerLeakage breakerOut-doorunitIndoorunit4PterminalplateWired remotecontroller(Fieldsupply)white blackGroundGroundSystem address (S2)(Setting at shipment: “0”)Leakage breakerLeakage breakerOutdoor unitInter-unit control wiringIndoorunitNo. 12P(white)Wireless remotecontrollerGroundGroundNOTE
