Samsung AM***MXWA Series - Post-Installation Checks; Installation Work Checklist; Refrigerant Pipe Work Checklist

ENGLISH-93
03 OTHERS
Things to check after completing the installation
1. 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 30M.
2. 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 tester.
CAUTION
N
T
S
R
< ELB >
230V
400V400V
400V
230V 230V
3. Check if the R-410A indoor units are connected.
4. When N phase is not correctly connected to R, S and T phase, over-voltage protection control will be in eect and it will
cut-o the power of the PCB. Check the power cable connection of the N phase if the PCB is not turned on.
5. Check the following after the installation is completed.
Installation work
Outdoor 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 xed 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 installed
horizontally?
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 dierence between the refrigerant pipes
within 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 must
record the amount of additional refrigerant on the service record paper
placed inside of the outdoor unit.)
OTHERS