12 English8. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER8-1 HOW TO CONNECT WIRINGS• Connect the piping only after finishing the refrigerant piping work.• Make sure all power supply is shut down to the unit first.• As shown in the Fig. 16, loosen the two screws in the control box lid, remove it, and do the wiring work.• Once all wiring is done, attach the control box lid and secure it with the screws.If you are using “8-4 DEFAULT SETTINGS,” however, finish that and then attach the control box lid andsecure it with the screws.8-2 THE GAS PIPING THERMISTOR• Connect to (X5A) on A1P.• Bundle the gas piping thermistor lead wire and the branch wiring (transmission) using the includedclamping material.• Tension is not added to the gas pipe thermistor lead wire coming out of the unit.• Power supply wiring • Ground wireConnect the wiring to R (L) and S (N) on the power supply terminal block (X1M). Also, connect the groundwire to the ground terminal. Take the wiring and the ground wire into the unit through the wiring pass-throughhole, and firmly secure them together using the included clamp (1).• Indoor unit inter-unit wiringConnect the wires to 1, 2, and 3 on the power supply terminal block (X1M). Take the wires into the unitthrough the wiring pass-through hole, and firmly secure them using the included clamp (1).• Transmission wiringConnect the wires to F1 and F2 on the transmission terminal block (X2M). Take them into the unit throughthe wiring pass-through hole, and firmly secure the gas piping thermister lead wire and the transmissionwiring using the included clamp (1).[ CAUTIONS ]• Do not under any circumstances connect the power supply wiring to the transmission terminal block (F1,F2), as this may cause damage to the entire system.CAUTION• When clamping wiring, use the included clamping material to prevent outside presure being exerted on thewiring connections and clamp firmly. When doing the wiring, make sure the wiring is neat and does notcause the control box lid to stick up, then close the cover firmly.• When attaching the control box lid, make sure you do not pinch any wires.• After all the wiring connections are done, fill in any gaps in the through holes with putty or insulation (pro-cured locally) to prevent small animals and insects from entering the unit from outside. (If any do get in, theycould cause short circuits in the control box.)• Outside the machine, separate the weak wiring (gas piping thermistor lead wire, transmission wiring) andstrong wiring (power supply wiring, inter-unit wiring, ground wire, and other power wiring) at least 50mm sothat they do not pass through the same place together. Proximity may cause electrical interference, mal-functions, and breakage.X5AA1P1 2 3 R (L ) S (N )F1 F2X1M X2MFig. 16Ground terminalGas pipingthermistor lead wiring LowvoltageHighvoltageTransmission wiringGround wirePower supply wiringIndoor unitinter-unit wiringGround wirePower supply wiringClamp (1)(accessory)ClaspClamp (1)ClaspIndoor unit inter-unit wiring(accessory)Gas piping thermistor lead wireClaspTransmissionwiringClamp (1)(accessory) Control box lidThe gas piping thermistor lead wire shouldbe passed through the clamp (1).