Johnson Controls York YD Manual page 15

Centrifugal liquid chillers

Hide thumbs Also See for York YD:

Table of Contents

•

"Control panel – Schedule"

If any faults other than those listed above occur during a soft shutdown, the soft shutdown is

aborted, the run signal to the compressor motor starter is de-energized and the compressor or

compressors immediately enter Coastdown.

If an operator initiates a Local Stop with the Keypad Rocker Switch or any fault occurs other than

those listed immediately above, a Fault Shutdown is performed on all running compressors.

Simultaneously, the run signal to the compressor motor starter(s) is de-energized, the

compressor(s) enters Coastdown, and the pre-rotation vanes and discharge valve(s) are driven

closed.

Model YD Mod D with OptiView Control Center

Table of Contents