York MILLENNIUM YS User Manual

INSTALLATION, OPERATION, MAINT.
MILLENNIUM
®
ROTARY SCREW LIQUID CHILLERS
Supersedes: Nothing
Form 160.47-NOM3 (599)
MODELS
YS BA BA S0 THRU YS FC FB S5
STYLE D
m
Metric Conversions
®
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29039A(R)
R-22 and R-134a

York MILLENNIUM YS Specifications

General

Brand	York
Model	MILLENNIUM YS
Category	Chiller
Language	English

Summary

INSTALLATION

General Unit Information

Describes unit shipment forms and required field labor.

Unit Inspection and Site Preparation

Procedures for checking unit shipment, data plate, location, foundation, and clearance.

Rigging Procedures

Instructions for safely lifting the unit and handling it.

Isolator Pad Installation

Steps for placing and securing vibration isolator pads for the unit.

Optional Spring Isolator Installation

Detailed instructions for installing optional spring isolators.

Piping Connections and Alignment

Guidelines for fabricating piping and checking alignment.

Water Piping Management

Details on connecting and managing water piping for cooler, condenser, and circuits.

Water Circuit Checks and Venting

Procedures for installing flow switches, drain/vent valves, and checking piping.

Refrigerant Relief Piping

Requirements for installing refrigerant relief vent piping.

Unit Piping

Factory installed piping on assembled units.

Control Wiring

Steps for completing unit wiring and control connections.

Power Wiring

Requirements for connecting electrical power to the unit.

Electro-Mechanical Starter Wiring

Specific power wiring for units with electro-mechanical starters.

Solid State Starter Wiring

Wiring considerations for units with optional solid-state starters.

Insulation and Start-Up Service

Guidelines for insulation and procedures for requesting start-up service.

Installation Check List

A checklist for verifying installation steps before start-up.

OPERATION

Basic Description and Components

Overview of the YS Chiller package, its components, and driveline.

Oil Separator and Condenser Function

Explanation of the oil separator's design and the condenser's role.

Evaporator and Condensing Water Temperature

Details on evaporator function and calculating minimum condensing water temperature.

Oil System Overview

Overview of the oil system, referring to schematics and pressure transducers.

Oil Eductor Circuit

Explanation of the oil eductor circuit and filter drier replacement.

Variable Orifice and Liquid Refrigerant Flow

Details on variable orifice setpoints, liquid refrigerant flow, and metering.

Capacity Control System

How differential pressure controls the slide valve for capacity adjustment.

MAINTENANCE

General Maintenance Requirements

Overview of maintenance requirements and procedures for YS Chillers.

Compressor Oil Management

Guidelines for compressor oil types, changing, level checking, and filters.

Oil Filter and Drier Replacement

Detailed steps for replacing oil filters and filter driers.

Motor and Refrigerant Management

Motor inspection, refrigerant charge determination, and leak checking.

Pressure Connections and Condenser Tubes

Details on pressure fittings and condenser tube cleaning procedures.

Mechanical Cleaning and Evaporator Tubes

Procedures for mechanical cleaning and evaporator tube information.

Vibration Analysis

Using vibration analysis as a diagnostic tool for rotating machinery.