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York MILLENIUM SIMPLICITY ELITE 40 - User Manual

York MILLENIUM SIMPLICITY ELITE 40
44 pages
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351579-YTS-B-0608
ISO 9001
Certified Quality
Management System
MILLENNIUM
®
25-40 TON SINGLE PACKAGE
COMMERCIAL ROOFTOP UNIT EQUIPPED
WITH SIMPLICITY
®
CONTROLS
This manual includes application, programming and service
procedures for the Millennium
®
25-40 Ton Single Package
Commercial Rooftop Unit equipped with Simplicity
®
Controls.
These procedures are the same for all 25-40 Ton Millennium
®
Rooftop units in this series except as noted.
This manual covers Simplicity
®
controls only, for unit installation
information please refer to the following.
RECOMMENDED TECHNICAL AND
INSTALLATION AIDS
Millennium
®
25-40 Ton Single Package Installation and Operation
Manual - 336043
Millennium
®
25-40 Ton Technical Guide - 246653
TECHNICAL APPLICATION
AND
PROGRAMMING GUIDE
MILLENNIUM
®
SINGLE PACKAGE
ROOFTOP UNITS
25, 30 & 40 TON EQUIPPED WITH
SIMPLICITY
®
ELITE CONTROLS

Table of Contents

Questions and Answers:

York MILLENIUM SIMPLICITY ELITE 40 Specifications

General IconGeneral
BrandYork
ModelMILLENIUM SIMPLICITY ELITE 40
CategoryAir Conditioner
LanguageEnglish

Summary

Simplicity Control System Overview

Introduction and System Overview

Provides a foundational understanding of the Simplicity® control system, its components, and purpose.

Diagnostics and Error Handling

Explains system diagnostics using LEDs and accessing error history for troubleshooting.

Analog to Digital Conversion and PI Algorithm

Covers essential concepts like analog-to-digital conversion and the PI algorithm for control.

Controller Components and Communication

Details key hardware components, controller specifics, and communication interfaces.

Simplicity Programming and Parameters

Setting the Clock and Parameters

Guides on setting the internal clock and adjusting system parameters via the control interface.

Settable System Parameters

Lists and defines all configurable parameters affecting unit operation and customization.

Initial Startup Options

Covers essential field adjustments needed for system commissioning and proper setup.

Millennium Sequence of Operation

Modes of Operation (Occupied, Unoccupied)

Describes the primary operational modes and how the unit transitions between them.

Unit Control Sequences

Explains how the controller manages unit functions based on various inputs and schedules.

VAV and Sensor Operation

Details operation for VAV systems, including sensor integration for heating and cooling.

Advanced Control Strategies

Head Pressure Control

Details the head pressure control option for reliable low ambient cooling performance.

Comfort Ventilation and Economizer Control

Explains Comfort Ventilation mode and economizer strategies for SAT management.

Demand Ventilation and Exhaust Operation

Covers IAQ control via Demand Ventilation and building exhaust methods.

Troubleshooting and System Errors

Status Indicators and Error History

Guides interpretation of status LEDs and accessing the error history buffer for diagnostics.

Sensor Failure Modes and Defaults

Explains system behavior and default operations when sensors fail or are out of range.

System Error Conditions

Lists and explains common system errors, including SAT failures, fan failures, and alarms.

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