York YR User Manual

JOHNSON CONTROLS
40
FORM 160.81-O1 (1020)
ISSUE DATE 10/05/2020
SECTION 2 - OPTIVIEW™ CONTROL CENTER
Optiview Control Center
OIL SEPARATOR SCREEN
Overview
This screen displays a close-up of the chiller oil sump
and provides all the necessary setpoints for maintain-
ing the oil.
Display Only
Discharge Temperature
Displays the temperature of the refrigerant in its gas-
eous state at discharge of the compressor as it travels
to the Oil Separator.
Discharge Superheat
In software versions C.MLM.05.04.xxx (and later),
displayed value is Discharge Temperature minus Dis-
charge Saturation Temperature. Discharge Saturation
Temperature is not a displayed value. In earlier ver-
sions, it is Discharge Temperature minus Condenser
Saturation Temperature.
Oil Pressure
Displays the pressure of the oil at the input to the com-
pressor.
Discharge Pressure
Displays the pressure at the discharge of the compressor.
Dierential Oil Pressure
Displays the pressure differential between the oil pres-
sure (as sensed at the input to the compressor) and the
evaporator pressure. If either of the transducers used
to calculate this differential is out of range, the display
field will show XX.X. The displayed value includes
the offset pressure that is derived during the first 15
seconds of “Start Sequence Initiated” (Refer to the fol-
lowing explanation of offset pressure).
Differential Oil Pressure = (Oil Pressure – Evaporator
Pressure) ± Offset Pressure
Dierential Filter Pressure
Displays the pressure differential between the input to
the oil filter (Discharge Pressure) and the input to the
compressor. This value is used to check for filter clog-
ging. If either of the transducers used to calculate this
differential is out of range, the display field will show
XX.X. The displayed value includes the offset pressure
that is derived during the first 15 seconds of “Start Se-
quence Initiated”. (Refer to the following explanation
of offset pressure).
Differential Filter Pressure = (Discharge Pressure – Oil
Pressure) ± Offset Pressure
FIGURE 12 - OIL SEPARATOR SCREEN
LD12825

York YR Specifications

General

Brand	York
Model	YR
Category	Industrial Equipment
Language	English

Summary

General Safety Guidelines

Safety Symbols

Explains hazard symbols used in the manual for safe operation and identification.

Document Information and Maintenance

Document Changeability

Details on how the document content may change without notice for product improvement.

Revision Notes

Records technical information and other changes made to the document.

Associated Literature

Lists related forms and documents for further system information.

Conditioned Based Maintenance

Describes a proactive maintenance program leveraging real-time data for optimal operation.

System Description and Fundamentals

System Operation Description

Explains the YORK Model YR Chiller's components and refrigeration cycle.

Capacity Control

Details how the chiller manages output via slide valve for load conditions.

Chiller Operation Overview

Covers chiller start-up sequences, shutdowns, and service technician procedures.

OptiView™ Control Center Features

Control Center Introduction and Navigation

Overview of the control system, interface conventions, access levels, and navigation.

Core Chiller Screens

Details on Home, System, Evaporator, Condenser, and Compressor screens.

Specialty Screens and Controls

Covers Sensitivity, Hot Gas Bypass, Oil Separator, Starter, and Ground Fault screens.

Configuration and Setpoint Management

Screens for managing setpoints, system setup, schedules, users, and communications.

Data Logging and Reporting

Features for viewing history, security logs, trending data, and custom views.

Display Messages and Safety Shutdowns

Status and Routine Shutdowns

Describes chiller status, startup sequences, and routine shutdown causes.

Warning and Start Inhibit Messages

Alerts for conditions like clock failure, pressure limits, and startup prevention.

Safety Shutdown Faults

Details critical faults for Evaporator, Condenser, Oil, and Motor systems.

Printer Operations and Metric Conversion

Printer Reports and Types

Lists available print reports and compatible printer models (Okidata, Weigh-Tronix, Seiko).

Printer Connections and Setup

Details physical connections and configuration settings for printers.

SI Metric Conversion

Provides factors for converting English units to SI Metric values, including temperature.