Emerson Liebert iCOM Manual De Usuario

S424 CW Flush—Selects the number of hours between each chill water coil flush cycle. The default is 

every 24 hours. Reducing this number will increase the number of coil flushes.
S425 Freecooling Flush—Selects how many hours between each free-cooling coil flush cycle. The 

default is every 24 hours. Reducing this number will increase the number of coil flushes.
S426 Hot Water Flush—Selects how many hours between each hot water coil flush cycle. The 

default is every 24 hours. Reducing this number will increase the number of coil flushes.
S427 Ball Valve Setpoint Offset—Adjusts the operating compressor discharge pressure by 

changing the targeted range of control for units with motorized ball valves. The psi added here 

increases valve sensitivity. The higher the number, the more the ball valve will open at a given 

pressure.
S428—Not applicable to Liebert North America units.
S429 CW Valve Control—Allows the valves to be set to operate in parallel, alternate or cascade for 

units equipped with dual motorized ball valves controlling flow to the chilled water coil. Parallel is the 

default selection and operates the valves at the same opening based on the call for cooling.
S430 Main Valve—Selects which valve is the lead valve if CW Valve Control is set for “Alternate or 

Cascade.”
S431 Auto Valve Rotation—Allows the valves to be rotated based on the Valve Rotation Hour if CW 

Valve Control is set for “Alternate or Cascade.”
S432 Valve Rotation Hour—Determines the time between the valve rotations if Auto Valve 

Rotation is enabled.
S433 Dehum Operation—Selects the dehumidification operation of the valves for units equipped 

with dual motorized ball valves controlling flow to the chilled water coil.
S43B EEV Alarmboard (Liebert DSE only)—Sets the EEV Alarmboard events sent to the board as a 

normally open or normally closed set of contacts. The choices are NO and NC; the default is NC.