York YK-EP B Operation & Maintenance Manual page 61

FORM 160.87-OM1
ISSUE DATE: 8/24/2018
Discharge Pressure
Displays the current discharge pressure of the econo-
mizer compressor.
Economizer Pressure
Shows the pressure within the economizer.
Head Pressure
Shows the head pressure of the economizer.
PRV Position
Displays the position of the pre rotation vanes in per-
cent. Fully open is 100% and fully closed is 0%.
VGD Control State
Shows the current state of the VGD Control. It will
show various messages as follows:
Undefined
Disabled
Stall Waiting
Probing
Stall Reacting
PRV Override
Sensor Failure Override
Extreme Stall Override
Manual Hold
Manual Open
Manual Close
Inactive
PROGRAMMABLE
VGD Actuator
Access Level Required: SERVICE
Displays the current state of the VGD Actuator. It will
show either Auto or Manual.
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Open (with LED)
Access Level Required: SERVICE
Pressing this button will send a command to open the
VGD. The LED will indicate on.
Close (with LED)
Access Level Required: SERVICE
Pressing this button will send a command to close the
VGD. The LED will indicate on.
Hold
Access Level Required: SERVICE
Pressing this button will hold the VGD in it's current
position.
Auto
Access Level Required: SERVICE
Pressing this button returns the VGD to automatic.
NAVIGATION
Home
Access Level Required: SERVICE
Returns user to HOME Screen.
Economizer Compressor
Access Level Required: SERVICE
Pressing this button will return to the Economizer
Compressor Screen.
Setpoints
Access Level Required: SERVICE
Pressing this button will navigate to the Economizer
VGD Setpoints Screen.
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