York YK-EP B Operation & Maintenance Manual page 72

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Control State
Displays the control state that the economizer is oper-
ating. It could show Inactive, Cooling Control, or Mo-
tor Current, depending on the panels Capacity Control
State.
Load Limit
Displays the Active Load Limit. The following mes-
sages could be displayed: Inactive, None, or Motor
Current.
Anti-Surge Limit LED
LED is ON when the Economizer Operation Mode is
Economizing Anti Surge or Boost Anti Surge. LED is
off otherwise.
Economizer Head Pressure
Displays the economizer head pressure in tenths.
Active Output LED
LED on the panel lights to indicate Pre-Rotation Vanes
are active.
PRV Command
Displays the position the Pre-Rotation Vanes are com-
manded to open.
PRV Feedback
Displays the feedback data used to calculate the posi-
tion of the Pre-Rotation Vanes
Control Mode
Shows what state the economizer Pre-Rotation Vane
state. It may display Manual, Auto, or Inactive, de-
pending on what is happening with the economizer.
PROGRAMMABLE
Manual Increment
Access Level Required: SERVICE
Sets the amount the PRV position signal will Increase
or Decrease when one of those manual control buttons
are pressed. (Range is adjustable from 0.1% to 10%,
Default = 10%)
Increase
Access Level Required: SERVICE
Pressing this button with activate the economizer Pre-
Rotation Vane override and set it to Manual, if it was
previously in Auto. It will increase the Pre-Rotation
Vane override position by an amount equal to the Man-
ual Increment.
72
Decrease
Access Level Required: SERVICE
Pressing this button with activate the economizer Pre-
Rotation Vane override and set it to Manual if it was
previously in Auto. It will decrease the Pre-Rotation
Vane override position by an amount equal to the Man-
ual Increment.
Set
Access Level Required: SERVICE
Pressing this button will open a dialog box where the
user can manually enter a command value for the econo-
mizer Pre-Rotation Vanes. Once a value has been en-
tered and the Enter key pressed, the Econ PRV Override
Enable will be set to Manual, if it had been in Auto and
the Econ Pre-Rotation Vanes Override Position will be
set to the entered value. (0% to 100%, Default = 0%)
Auto
Access Level Required: SERVICE
Pressing this button will set the economizer capacity
control to Auto. This button will only be shown when
the economizer capacity control is Manual.
Economizer Run
Access Level Required: OPERATOR
This button will enable or disable the economizer run
feature. This feature is enabled by default.
NAVIGATION
Home
Access Level Required: VIEW
Returns the user to the HOME Screen.
Economizer Compressor
Access Level Required: SERVICE
Allows the user to navigate to the Economizer Com-
pressor Screen.
Setpoints
Access Level Required: SERVICE
Returns the user to the Economizer Capacity Control
Setpoints Screen.
FORM 160.87-OM1
ISSUE DATE: 8/24/2018
JOHNSON CONTROLS