York YK Style H Operation Manual page 72

Table 57: Programmable
Button
[VGD] Auto
Set 100% VGD
Set 0% VGD
Table 58: Navigation
V09 software
Button
and earlier
Home Service
VGD Service
72
Description
This key puts the VGD into automatic control mode.
Pressed during the VGD calibration routine to indicate that the VGD is physically at the
100% position.
Pressed during the VGD calibration routine to indicate that the VGD is physically at the
0% position.
V10 and later
with YORK
Description
Chiller Access
Manager
JCI Service Returns the user to Home Screen.
JCI Service Returns the user to Variable Geometry Diffuser Screen.
Model YK Style H Centrifugal Liquid Chillers with OptiView Control Center