Screen Descriptions - McQuay WSC Operating Manual

Screen Descriptions

VIEW Screens
VIEW Screens are only for viewing the operation of the unit and compressors. No data is input
into VIEW Screens. The controllers' screens are only in °F/psi. When the Display Units set point
is set to °C/kPa, the units of measure on the OITS only will change.
View Unit Status (Single Compressor)
VIEW UNIT STATUS (1)
Unit=COOL
Compressor=LOAD
Ev/Cn Pmps=STRT/RUN
VIEW UNIT STATUS (2)
Compressor=LOAD
Start-Start Tmr Clr
Inhibit Oil Temp Low
Unit status can be OFF, COOL, ICE, HEAT, and ALARM as determined from the Unit State
variable, the Unit Mode setpoint, the Unit Enable and the presence of a shutdown alarm.
Compressor states can be OFF, START, PRELUBE, HOLD, LOAD, UNLOAD, POSTLUBE, and
ALARM as determined from the Comp State variable and the Load and Unload outputs, and the
presence of a compressor shutdown alarm. Evap and Cond Pump states can be OFF, STRT (start),
& RUN.
View Unit Status (Dual Compressor)
VIEW UNIT STATUS (3)
Unit=COOL
Cmp1/2= LOAD /POSTLB
Ev/Cn Pmps=STRT/RUN
This screen is only viewable on dual compressor units. Unit states can be OFF, COOL, ICE,
HEAT, and ALARM as determined from the Unit State variable, the Unit Mode setpoint, and the
presence of a unit shutdown alarm. Compressor states can be OFF, START, PRELB, HOLD,
LOAD, UNLOAD, POSTLB, and ALARM as determined from the Comp State variable, the Load
and Unload outputs, and the presence of a compressor shutdown alarm. Evap and Cond Pump
states can be OFF, STRT (start), & RUN.
View Unit Water
VIEW UNIT WATER ° ° ° ° F(1)
Evap XX.X XX.X
Cond XX.X XX.X
VIEW UNIT WATER ° ° ° ° F(2)
HtRc NA
Cond XX.X XX.X XX.X
HT RC will only show temperatures if the unit has a heat recovery bundle with sensors, otherwise
it will show NA. Cond is the tower condenser, which will always be present.
46
In Out Delta
XX.X
XX.X
In Out Delta
NA
OM Centrif Micro ΙΙ-5