Things To Check After Completing The Installation - Samsung AM***MXWA Series Installation Manual

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 30MΩ .
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
230V 230V 230V
400V 400V
400V
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 effect and it will
cut-off 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
Refrigerant pipe work
N
T
S
R
< ELB >
• 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?
Outdoor unit
• Is the place well-ventilated and ensures space for service?
• Is the outdoor unit fixed securely to withstand any external force?
• Have you checked the external surface and the inside of the indoor unit?
• Is there enough space for service?
Indoor unit
• Have you checked if the center of the indoor unit is ensured and it is installed
horizontally?
• 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 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 . )
ENGLISH-93