SYSVRF2 IM

30
Menu function mode flowchart
Start
Long press “menu” 5 seconds
Display “-n1”
Press “menu”
Display “-nX”
Press “up” or “down” to choose “X”
Press “OK” to confirm “X”
Display “-nXY”
Display “-nXY”
Press “up” or “down” to choose “Y”
Press “OK” to confirm “Y”
Press “OK” to confirm “Y”
Press “OK” to confirm “Y”
Confirm “-nXY”
Press “menu”
Press “menu”
Press “menu”
7.1 Outdoor unit address and capacity settings
7. COMMISSIONING
Before running a system for the first time, set each outdoor unit’s
address on switch ENC1 on each outdoor unit’s main PCB. 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.
7.2 Multi-system projects
For projects with multiple refrigerant systems, each independent
refrigeration system (i.e. each system of up to three outdoor 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.
7.4 Commissioning trial runs
7.4.1 Commissioning test run of single refrigerant system
Note: When running the system for commissioning test runs, if the
combination ratio is 100% or less, run all the indoor units and if the
combination ratio is more than 100%, run indoor units with total
capacity equal to the total capacity of the outdoor units.
7.3 Pre-commissioning checks
Before turning on the power to the indoor and outdoor units,
ensure the following:
All indoor and outdoor refrigeration piping and communication
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.
Pipe flushing, gastightness testing and vacuum drying have
been satisfactorily completed as per instructions.
All condensate drain piping is complete and a watertightness
test has been satisfactorily completed.
All power and communication wiring is connected to the correct
terminals on units and controllers. (Check that the different
phases of the 3-phase power supplies have been connected to
the correct terminals).
No wiring has been connected in a short-circuit.
The power supplies to indoor and outdoor units have been
checked and the power supply voltages are shown in table 6-2
All control wiring is 0.75mm2 three-core shielded cable and the
shielding has been grounded.
The outdoor units’ address and capacity switches are set
correctly and all other indoor and outdoor unit field settings
have been set as required.
The additional refrigerant charge has been added correctly.
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 and gas stop
valves should be opened.
During commissioning, it is important that you:
Keep a supply of R410A refrigerant at hand.
Keep the system layout, system piping and control wiring
diagrams at hand.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Once all the pre-commissioning checks in Part “Pre-commission-
ing Checks” have been completed, a test run should be
performed as described below and a Commissioning Report
should be completed as a record of the operating status of the
system during commissioning.