Emerson Liebert PEX Series, Руководство пользователя

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46 Chapter 4 System Power-On Commissioning
Liebert.PEX2 Series Air Conditioner User Manual
8. Commission the FC function: Make sure that the chilled water source is supplied normally. The temperature of the
chilled water ranges from 45.6°F to 48.2°F. Set the temperature point to trigger FC demand, and the chilled water
valve is opened.
To trigger FC demand, you should:
Enter the ‘SERVICE MENUS’ -> ‘SETPOINTS’ to set S138 to ‘8K; enter ‘USER MENUS’ -> ‘SETPOINTS’ -> ‘HUM
SET’ to adjust the humidity setting value to ‘T
setting hum
’ (T
setting hum
= T
ambient hum
) and then enter ‘TEMP SET’ to adjust the
temperature setting value ‘T
setting temp
’ (T
setting temp
= T
return air temp
-2). Wait for 30s, and the FC requirement will be
triggered and the chilled water valve will be open.
Note
After commissioning, restore the temperature setpoint to the default or original setpoint.
4.3.3 Inspection After Commissioning
After commissioning, check and confirm it according to Table 4-2.
Table 4-2 Inspection after commissioning
Items Results
Check that all output functions are automatic
Check that the temperature & humidity setpoints and control
precisions are set correctly
Check that other functions are set correctly