Samsung AM***MXWA Series Installation Manual

Contents

ENGLISH-9303 OthersThings to check after completing the installation1 Before supplying the power, use DC 500 V insulation resistance tester to measure the power (3 phase: R, S, T/ 1 phase: l,n) terminal and insulation resistance between the outdoor unit groundings- Measurement should be over 30MΩ2 Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase- R, S, T, n terminal: check if the voltage is within 380-415 V between wires (R-S, S-T, T-R) and 220-240 V between phases(R-n, S-n, T-n) before turning on the switch• never measure the communication terminal since communication circuit may get damaged• Check for short-circuit of the communication terminal with a general circuit testerCAUTIONNTSR< ELB >230V400V400V400V230V 230V3 Check if the R-410A indoor units are connected4 When n phase is not correctly connected to R, S and T phase, over-voltage protection control will be in effect and it willcut-off the power of the PCB Check the power cable connection of the n phase if the PCB is not turned on5 Check the following after the installation is completedInstallation workOutdoor unit• Have you checked the external surface and the inside of the outdoor unit?• Is there any possibility of short-circuit caused by the heat of an outdoor unit?• Is the place well-ventilated and ensures space for service?• Is the outdoor unit fixed securely to withstand any external force?Indoor unit• Have you checked the external surface and the inside of the indoor unit?• Is there enough space for service?• Have you checked if the center of the indoor unit is ensured and it is installedhorizontally?Refrigerant pipe work• Have you selected correct pipes?• Are the liquid and gas valve open?• Is the total number of connected indoor units within the allowable range?• Are the length and the height difference between the refrigerant pipeswithin the allowable range?• Are the branch joints properly installed?• Did you check the connection of liquid and gas pipes?• Have you selected correct insulator for pipes and insulated them correctly?• DId you insulate the pipes and connection part correctly?• Is the quantity of the additional refrigerant correctly weighed in? (You mustrecord the amount of additional refrigerant on the service record paperplaced inside of the outdoor unit )