i. Run 50% of the indoor units in cooling mode: temperature 17°C ; fan speed high.
ii. Run 50% of the indoor units in heating mode: temperature 30°C ; fan speed high.
f) After one hour, complete Sheet C of the system commissioning report then:
i. Check the system parameters using system check button on each outdoor unit’s data transfer module and
complete the mixed mode columns of one Sheet E and one Sheet F of the system commissioning report for
each outdoor unit.
ii. Check the MS box parameters using the spot check buttons on each MS box’s PCB and complete either the
cooling mode or heating mode columns (as appropriate) of one Sheet G of the system commissioning report
for each group of indoor units downstream of each MS box.
7. Finally, complete Sheet D of the system commissioning report.
8. The test run is considered complete when there is no error code on the user interface or the outdoor unit display.
When an error code is displayed, rectify the operation based on the description in the error code table. Try to conduct
the test run again to check that the exception has been corrected.
11.5.2 Commissioning test run of multiple refrigerant systems
Once the commissioning test run of each refrigerant system has been satisfactorily completed as per Part 3, 11.5.1
“Commissioning test run of single refrigerant system”, run the multiple systems that make up a project simultaneously and
check for any abnormalities.
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