York YST User Manual

JOHNSON CONTROLS
112
FORM 160.67-O1
ISSUE DATE: 4/1/2015
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
RAMP RATE SETPOINTS SCREEN
LD09283
FIGURE 43 - RAMP RATE SETPOINTS SCREEN
NOTE: OptiView
™
Control Center Screens shown may NOT represent the exact screens according to the software version utilized.
Time Setpoints
Access Level Required: VIEW
Moves to a sub-screen that allows programming of
various time delays pertaining to the operation of the
chiller.
Ramp Rate Setpoints
Access Level Required: VIEW
Moves to a sub-screen that allows programming of
various speed setpoint and valve control signal ramp
rates pertaining to the operation of the chiller.
OVERVIEW
This screen allows programming of various speed
setpoint and control valve ramp rates pertinent to the
operation of the chiller and the optional equipment
supplied. It is also a gateway to screens for program-
ming pressures, time delays, and speeds pertinent to
the operation of the chiller. To view the results of a
setpoint change, the applicable Screen name is also ref-
erenced. All setpoints require a login access level of
Service or higher.
PROGRAMMABLE
RRSP3 – Slow Roll Speed Setpoint
Screen: Steam System
Range: 25-100 RPM/Sec Default: 50 RPM/Sec
This is the rate that the speed setpoint will increase
from 0 to the SSP1-Slow Roll Speed when the slow
roll warm-up is initiated.
RRSP4 – Minimum Rated Speed Setpoint
Screen: Steam System
Range: 100-200 RPM/Sec Default: 200 RPM/Sec
This is the rate that the speed setpoint will increase
from SSP1-Slow Roll Speed to SSP2-Minimum Rated
Speed when the ramp-to-rated speed is initiated.
RRSP5 – Rated Speed Setpoint
Screen: Steam System
Range: 1-200 RPM/Sec Default: 10 RPM/Sec
This is the rate that the speed setpoint will increase
from 0 to the SSP1-Slow Roll Speed when the slow
roll warm-up is initiated.

York YST Specifications

General

Brand	York
Model	YST
Category	Chiller
Language	English