Kaysun Amazon V, Engineering Data Book

Page: 190 / 200

Amazon V
Part 3 - S
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em Design and Ins
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189
11 Commissioning
11.1 Outdoor Unit Address and Capacity Settings
Before running a system for the first time, set each outdoor unit’s address on switch ENC1 on each outdoor unit’s main
PCB. Refer to Table 3-11.1. The capacity of each outdoor unit (on switch ENC2 on each outdoor unit’s main PCB) is factory-
set and should not need changing. Check that the capacity settings are correct.Refer to Table 3-11.1.
Table 3-11.1: Outdoor unit address and capacity settings
Addresssettings Capacity settings
0
Master unit 0 8HP 7 22HP
1
Slave unit
1
1 10HP 8 24HP
2
Slave unit 2 2 12HP 9 26HP
3
Slave unit 3 3 14HP A 28HP
≥4
Invalid 4 16HP B 30HP
5 18HP C 32HP
6 20HP
11.2 Multi-system Projects
For projects with multiple refrigerant systems, each independent refrigeration system (i.e. each system of up to
threeoutdoor units and their connected indoor units) should be given a test run independently, before the multiple systems
that make up a project are run simultaneously.
11.3 Pre-commissioning Checks
Before turning on the power to the indoor and outdoor units, ensure the following:
1. All indoor and outdoor refrigeration piping andcommunication wiring has been connected to the correct refrigeration
system and the system to which each indoor and outdoor unit belongs is clearly marked on each unit or recorded in
some other suitable place.
2. Pipe flushing, gastightness testing and vacuum drying have been satisfactorily completed as per instructions.
3. All condensate drain pipingis complete and a watertightness test has been satisfactorily completed.
4. All power and communication wiringis connected to the correct terminals on units and controllers. (Check that the
different phases of the 3-phasepower supplies have been connected to the correct terminals).
5. No wiring has been connected in a short-circuit.
6. The power supplies to indoor and outdoor units have been checked and the power supply voltagesare within ±10% of
the rated voltages for each product.
7. All control wiring is 0.75mm 2 three-core shielded cable and the shielding has been grounded.
8. The outdoor units’ address and capacity switches are set correctly (see Part 3, 11.1“Outdoor Unit Address and Capacity
Settings”) and all other indoor and outdoor unit field settings have been set as required.
9. The additional refrigerant charge has been added as per Part 3, 8“Charging Refrigerant”. Note: In some circumstances it
may be necessary to run the system in cooling mode during the refrigerant charging procedure. In such circumstances,
points 1 to 8 above should be checked before running the system for the purpose of charging refrigerant and the
outdoor unit liquid, gas and oil balance valves should be opened.
During commissioning, it is important that you:
▪ Keep a supply of R410A refrigerant at hand.
▪ Kee p the system layout, system piping and control wiring diagramsat hand.