(2) Calculation of the Additional Refrigerant ChargeAdditional Refrigerant Charge=Length of Liquid Pipe¶0.375×54+Length of Liquid Pipe¶0.25×22)-880The largest additional refrigerant charge value is 800g.This means if the calculated value exceeds 800g, theadditional refrigerant charge takes 800g, while the calculated value takes less than 800g, the additional refrigerant chargetakes the calculated value.4.4 Electric Wiring4.4.1 Wiring precautions(1) The installation must be done in accordance with the national wiring regulations.(2) Only a power cord with the rated voltage and exclusive circuit for the air conditioning can be used.(3) Do not pull the power cord forcefully.(4) The electric installation should be performed by a technician instructed in the local laws, regulationsand this manual.(5) The diameter of the power cord should be large enough for the unit. If the cord is damaged, it must be replaced by thededicated one.(6) The ground should be firm and the earth wire should be connected to the dedicated device of the buildingby the technician.The air switch coupled with the leakage current protection switch must be equipped and haveenough capacity in both the magnetic and thermal tripping functions in case of the short circuit and overload.Table 8Models Power Supply Capacity of the air Switch˄A˅ Recommended Cord˄pieces×sectional area˅208/230V~60Hz 32 3×0.0062 sq in208/230V~60Hz 32 3×0.0062 sq in208/230V~60Hz 32 3×0.0062 sq inINDOOR UNIT DINDOOR UNIT CINDOOR UNIT BINDOOR UNIT AXT 3N(1 ) N (1 )X T 4N ( 1)X T2X T12 3PEX TN( 1)OUTDOOR UNITPO WERL1 L2L2L1 2 3 2 3 2 3N(1 ) 2 3 N( 1 ) 2 3 N ( 1) 2 3 N(1 ) 2 3PE P E P E P EFig 1138GJQF30---338GJQG36---338GJQG42---338GJQF30---315