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York YMC2 User Manual

York YMC2
146 pages
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YMC
2
MODEL B
WITH OPTIVIEW™ CONTROL CENTER
CENTRIFUGAL LIQUID CHILLERS
WITH R-134A OR R-513A REFRIGERANT
OPERATIONS AND MAINTENANCE Supersedes: 160.84-OM1 (717) Form 160.84-OM1 (917)
Issue Date:
September 21, 2017
LD17500

Table of Contents

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York YMC2 Specifications

General IconGeneral
BrandYork
ModelYMC2
CategoryChiller
LanguageEnglish

Summary

System Fundamentals

Compressor Description

Details on the centrifugal compressor and impeller.

Motor Description and Bearings

Information on the permanent magnet motor and bearings.

Variable Speed Drive Functionality

How the VSD varies compressor speed.

OptiView™ Control Center Interface

The user interface for chiller operation.

Capacity Control Methods

How the chiller modulates capacity (VGD, VSD, HGBP).

System Operating Procedures

Chiller Start-Up Conditions

Necessary conditions for chiller to start.

Chiller Operation Overview

Description of chiller running and capacity control.

Chilled Liquid Control Setpoints

Setting and controlling chilled liquid temperature.

System Stopping Procedures

Procedures for normal and safety stops.

Fault Shutdowns and Clearances

Types of faults and how to clear them.

OptiView™ Control Center Functions and Navigation

Home Screen Functionality

The main display and its interactive elements.

System Screen Parameter Display

General chiller status and parameters.

Evaporator Screen Details

Specific evaporator parameters and setpoints.

Condenser Screen Details

Specific condenser parameters and controls.

Heat Pump Screen Operation Modes

Controls for heat pump functionality.

Compressor Screen Status Monitoring

Display of compressor operational data.

Magnetic Bearing Controller Screen

Overview of MBC parameters.

Magnetic Bearing Controller Details Screen

In-depth MBC parameter display.

Surge Screen Monitoring and Settings

Surge protection feature configuration.

Variable Geometry Diffuser Screen

VGD operational parameters.

Power Panel Screen Information

Details on the UPS and battery backup.

Capacity Controls Screen Parameters

Parameters related to chiller capacity control.

Variable Speed Drive (VSD) Screen

Overview of VSD operational parameters.

Setpoints Screen Key Parameter Access

Centralized location for setting key parameters.

VSD Operation

Maintenance Procedures

Preventative Maintenance Schedule

Recommended daily, monthly, and yearly tasks.

Checking System for Refrigerant Leaks

Procedures for identifying refrigerant leaks.

System Evacuation Process Steps

Methods for removing air and moisture.

Vacuum Dehydration Techniques

Achieving a dry system through vacuum.

Refrigerant Charging Guidelines

Procedures for adding refrigerant.

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