7 ConfigurationInstaller and user reference guide17FDA125A5VEBSplit system air conditioners4P495031-1A – 2019.031 2 3a a abc1 2 3P1 P2P1 P2d1 2L N3bcbc1 2 3P1 P2P1 P2dL N L NL N▪ When using 2 user interfaces31 2 3bc1 2 3P1 P2P1 P2P1 P2d daL NbcaL N▪ When using group control3bcP1 P2dP1 P2 P1 P2P1 P2a1 2 3 L N1 2 31 2 3 L N1 2 31 2 3 L N1 2 3bcabcabcabcabcaL N L NL Na Power supplyb Main switchc Fused User interface▪ Master unit: Be sure to connect the wiring when combining with asimultaneously operating multi-type in group control.▪ EN/IEC 61000‑3‑12 provided that the short-circuit power Ssc isgreater than or equal to the minimum Ssc value at the interfacepoint between the user's supply and the public system.▪ EN/IEC 61000‑3‑12 = European/International TechnicalStandard setting the limits for harmonic currents produced byequipment connected to public low-voltage systems with inputcurrent >16 A and ≤75 A per phase.▪ It is the responsibility of the installer or user of the equipment toensure, by consultation with the distribution network operator ifnecessary, that the equipment is connected only to a supplywith a short-circuit power Ssc greater than or equal to theminimum Ssc value.To comply with EN/IEC 61000‑3‑12, following rules must beconsidered:▪ In case of combination of units 2x FDA125A + RZQ250, useseparate power supplies.NL21 3▪ Otherwise, refer to the table with Ssc values for FDA125A on theextranet.▪ If the Ssc value is NOT mentioned in the table for the usedcombination, use the common power supply wire delivered withthe unit.▪ If the Ssc value is mentioned in the table, both the commonpower supply wire or a separate power supply can be used, buta separate power supply is preferred.L N21 3aa Wire for common power supply (accessory)INFORMATIONIn case of group control it is not necessary to assign anaddress to the indoor unit. The address is automatically setwhen the power is activated.7 Configuration7.1 Field settingsMake the following field settings so that they correspond with theactual installation setup and with the needs of the user:▪ External static pressure setting using:▪ Airflow automatic adjustment setting▪ User interface▪ Time to clean air filterTo set airflow automatic adjustment▪ When the air conditioning unit is running in fan operation mode:1 Stop the air conditioning unit.2 Set second code number to 03.(3) Dashed line represents separate power supply.