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York MILLENNIUM YIA-ST-1A1 - User Manual

York MILLENNIUM YIA-ST-1A1
118 pages
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MODELS YIA-ST-1A1 THROUGH YIA-ST-14F3 (STEAM)
MODELS YIA-HW-1A1 THROUGH YIA-HW-14F3 (HOT WATER)
OPERATORS MANUAL
MILLENNIUM
TM
CONTROL CENTER
OPERATIONS MANUAL
Supersedes: 155.16-O3 (894)
Form 155.16-O3 (797)
ABSORPTION LIQUID CHILLERS
28342A

Table of Contents

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York MILLENNIUM YIA-ST-1A1 Specifications

General IconGeneral
RefrigerantR-410A
ModelYIA-ST-1A1
CategoryChiller
BrandYork
TypeAir Cooled

Summary

Using This Book

Manual Structure Overview

Explains the manual's structure and how to use its sections.

Theory of Operation

Chiller Operational Theory Overview

Describes the chiller's basic components and absorption process.

Control Center Operation

Control Center Interface and Display

Details the control center layout and how to view system parameters.

System Parameters and Setpoints

Covers viewing operational data, system parameters, and programmable setpoints.

Programming and Service

Programming System Setpoints

Instructions for configuring system setpoints and modes via the control center.

Service Keys and Operating Modes

Explains the purpose and usage of service keys and system operating modes.

Operational Safety Checks

Initial Safety Checks on Power-Up

Outlines the initial safety checks performed when power is applied to the micro panel.

Pump Overload Protection

Details the monitoring of pump motor overloads and thermal switches for safety.

Pump Operation and Control

Manual Pump Control Procedures

Details how to manually control system pumps and perform dilution cycles.

Refrigerant Pump Control Logic

Explains the logic for starting and stopping refrigerant pumps based on float switches.

Specialized Chiller Cycles

Automatic Decrystallization (ADC) Process

Details the process and conditions for automatic decrystallization cycles.

Strong Solution Temperature Control

Explains how strong solution temperature affects unit loading based on RTLC.

Load Management Features

Pull Down Demand Limiting Function

Explains the pull down demand feature for energy savings during unit startup.

Remote Load Limit Control

Details how remote load limits are communicated and applied to the unit.

Dilution and Purge Systems

Dilution Cycle Operation

Explains the necessity, initiation, and termination conditions of dilution cycles.

Purge System Operation

Explains the necessity of the purge system and how to initiate a purge cycle.

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