York YK Style H, Руководство по эксплуатации

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Table 30: Display only fields
Field/LED name Description
Discharge Superheat
Displays the discharge superheat, calculated as (Discharge Temperature – Condenser
Saturation temperature).
Hot Gas Bypass Valve Position Displays the hot gas bypass valve position if that option is installed.
Oil Pump Drive Command
Frequency (Variable Speed Oil Pump
Only)
Displays the present frequency at which the oil pump is being commanded to run.
High Speed Thrust Bearing Limit
Switch (LED)
Displays the status position of the High Speed Thrust Bearing Limit Switch.
Extinguished when closed. This is the normal position. Only displayed on units with
Prox Switch.
Vane Motor Switch (LED) Illuminates when the vanes are completely closed.
Oil Return Solenoid (LED) Illuminates when the solenoid is energized.
VSD Output Frequency
Displays the present frequency at which the VSD is being commanded to run. Only
displayed when a VSD drive is installed.
Motor % Full Load Amps Displays the current to the motor as a percentage of the motor maximum current.
Input % Full Load Amps
Displays the chiller current as a percentage of the job input Full Load Amps (FLA)
value.
PRV Opening (LED) Indicates whether the vanes are in the process of opening.
PRV Closing (LED) Indicates whether the vanes are in the process of closing.
PRV Command
This value displays the present position of the Pre-rotation Vanes as a percentage
between 0 and 100%.
PRV Position Standard Deviation
Indicates the amount of error between the PRV setpoint and feedback. Shown in
Admin level only.
Motor Run (LED) Illuminates when the compressor motor is running.
Table 31: Programmable
Button Description
PRV Stroke Time
Is set for the time the PRV takes to stroke from 0 to 100%. Adjustable between 1.0 and
180 seconds. Defaults to 100 seconds for 60 Hz line frequency and 120 seconds for 50
Hz line frequency units. Only displayed in Admin Access.
PRV Period
Sets the PRV tuning period. Adjustable between 0.01 and 0.20 seconds; default is 0.10
seconds) Only displayed in Admin Access.
Fault Acknowledge
This option allows clearing of the High Speed Thrust Bearing Limit Switch safety
shutdown.
Table 32: Navigation
Button Description
Home Returns user to Home Screen.
Capacity Control Navigates to the Capacity Control Screen.
Oil Sump Navigates to the Oil Sump Screen.
Surge
Navigates to the subscreen that allows viewing and programming of the Surge
Protection feature.
VGD
Navigates to the subscreen that allows viewing and programming of the variable
geometry diffuser feature.
PRV Calibrate
Only available if the chiller is stopped and the system uses a Variable Speed Drive or
Hot Gas Bypass control. Navigates to the subscreen allowing calibration of the Pre-
rotation Vanes. Required Service Access Level.
Proximity Probe Calibrate
Only available if the chiller is stopped. Navigates to the subscreen allowing calibration
of the High Speed Thrust Bearing Proximity Probe sensor. Only shown on units with a
Proximity Probe. Requires Service Access level.
51 Model YK Style H Centrifugal Liquid Chillers with OptiView Control Center