System Screen - York YD Mod D Operation Manual

System screen

Figure 6: System screen
This screen gives a general overview of common chiller parameters for both shells.
Table 5: Display only fields
Field/LED name
Compressor 1: Discharge
temperature
Compressor 1: Oil pressure
Compressor 1: % Full Load Amps
Compressor 2: Discharge
temperature
Compressor 2: Oil pressure
Compressor 2: % Full Load Amps
Chilled liquid temperature - leaving Displays the temperature of the liquid as it leaves the evaporator.
Chilled liquid temperature - entering Displays the temperature of the liquid as it enters the evaporator.
Chilled liquid temperature - setpoint
Evaporator pressure
Evaporator saturation temperature
32
Description
Displays the temperature of the refrigerant in its gaseous state at discharge of the
compressor #1 as it travels to the condenser.
Displays the pressure differential between the Pump oil pressure transducer (output
of oil filter) for compressor #1 and the Sump oil pressure transducer. The displayed
value includes offset pressure derived from auto-zeroing during the system prelube. If
either of the transducers used to calculate this differential is out of range, the display
will show XX.X
Displays the percentage of compressor motor #1 Full Load Amps being utilized by
compressor #1 motor.
Displays the temperature of the refrigerant in its gaseous state at discharge of the
compressor #2 as it travels to the condenser.
Displays the pressure differential between the Pump oil pressure transducer (output
of oil filter) for compressor #2 and the Sump oil pressure transducer. The displayed
value includes offset pressure derived from auto-zeroing during the system prelube. If
either of the transducers used to calculate this differential is out of range, the display
will show XX.X
Displays the percentage of compressor motor #2 Full Load Amps being used by
compressor #2 motor.
Displays the active temperature setpoint to which the chiller is controlling the
evaporator liquid. This value could come from a 0-20 mA, 4-20 mA, 0-10 VDC, or 2-10
VDC input in Analog Remote mode, from a PWM signal in Digital Remote mode, from
SC-EQ communications interface in ISN (BAS) mode, or from a locally programmed
value.
Displays the present refrigerant pressure in the evaporator
Displays the present saturation temperature in the evaporator.
Model YD Mod D with OptiView Control Center