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York YLAA0435SE User Manual

York YLAA0435SE
206 pages
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YLAA0195 - YLAA0515
AIR-COOLED SCROLL CHILLERS
WITH MICROCHANNEL CONDENSER COILS
STYLE A (50 HZ)
57 - 142 TON
Products are produced at a
f a c i l i t y wh o s e q u a l i t y -
management systems are
ISO9001 certified.
R-410A
Issue Date:
October 5, 2020
035-21911-001
AIR-COOLED SCROLL CHILLER
INSTALLATION, OPERATION, MAINTENANCE
Supersedes 150.72-NM3 (811) Form 150.72-NM3 (1020)

Table of Contents

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York YLAA0435SE Specifications

General IconGeneral
BrandYork
ModelYLAA0435SE
CategoryChiller
LanguageEnglish

Summary

Section 1 General Chiller Information and Safety

Safety and Quality Standards Compliance

Outlines safety standards and quality compliance for chiller design and manufacturing.

Applicable Safety and Quality Standards

Lists applicable standards and codes the chillers comply with.

Section 2 Product Description

Accessories and Options Overview

Lists various optional accessories and features available for the chiller.

General System Description Overview

Details the main components and systems of the chiller unit.

Control and Power Panel Components

Control and Power Panel Components (Continued)

Product Identification Number (PIN) Overview

Basic Unit Nomenclature Explained

Defines the structure and meaning of the unit's model number nomenclature.

Product Identification Number (PIN) Details

YLAA Refrigerant Flow Diagram

Illustrates the refrigerant flow path within the YLAA chiller system.

Process and Instrumentation Diagram

Section 4 Installation

Chilled Liquid Piping Considerations

Continues guidelines on piping layout, strainers, flushing, and support.

Location and Clearance Guidelines

Provides guidance on selecting a suitable installation site and required clearances.

Wiring Requirements Overview

Covers factory-mounted controls wiring and field wiring requirements.

Installation Checklist Items

Lists essential items to check before placing the units in operation.

Field Wiring Guidelines

Outlines power and control wiring requirements according to NEC and local codes.

Chilled Liquid Piping General Guidelines

Provides general guidelines and precautions for connecting chilled water piping.

Single-Point Supply Connection Diagram

User Control Wiring Inputs Diagram

User Control Wiring Outputs Diagram

Section 5 Technical Data

Operational Limitations Overview

Lists operational limits for temperatures, flows, and voltages to prevent damage.

Dimensions (English) YLAA0195HE

Provides dimensional drawings and clearance requirements for the YLAA0195HE model.

Dimensions (English) YLAA0220HE, 0260HE, 0285SE, & 320SE

Provides dimensional drawings and clearance requirements for specific YLAA models.

Dimensions (English) YLAA0300HE,YLAA0360SE, YLAA0400SE

Provides dimensional drawings and clearance requirements for specific YLAA models.

Dimensions (English) YLAA0435SE

Provides dimensional drawings and clearance requirements for the YLAA0435SE model.

Dimensions (English) YLAA0350HE

Provides dimensional drawings and clearance requirements for the YLAA0350HE model.

Dimensions (English) YLAA0390HE, YLAA0485SE

Provides dimensional drawings and clearance requirements for YLAA0390HE and YLAA0485SE models.

Dimensions (English) YLAA0440HE

Provides dimensional drawings and clearance requirements for the YLAA0440HE model.

Dimensions (English) YLAA0455HE

Provides dimensional drawings and clearance requirements for the YLAA0455HE model.

Dimensions (English) YLAA0515HE

Provides dimensional drawings and clearance requirements for the YLAA0515HE model.

Temperatures and Flows Data

Provides nominal evaporator water flow and condenser air temperatures.

Voltage Limitations for Operation

States absolute voltage limitations to prevent compressor damage.

Unit Voltage Limitations Table

Lists the minimum and maximum acceptable voltage ranges for operation.

Physical Data for Standard Efficiency Units

Physical Data for High Efficiency Units

Electrical Information Overview

Micropanel Power Supply Specifications

Details power supply requirements for the micropanel, with/without control transformer.

Voltage Range Table

Lists the acceptable operating voltage ranges for different unit power configurations.

Electrical Notes and Explanations

Important Electrical Notes

Lists specific notes related to wiring, components, and installation requirements.

Detailed Electrical Data

Electrical Notes and Legend Definitions

Electrical Notes and Legend (Continued)

Wiring Diagrams - YLAA0195 Series

Elementary Wiring Diagrams YLAA0195

Provides elementary wiring diagrams specific to the YLAA0195 model series.

Elementary Wiring Diagrams YLAA0195 Series

Elementary Wiring Diagram YLAA0195 Sheet 2

Shows the second sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 3

Shows the third sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 4

Shows the fourth sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 5

Shows the fifth sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 6

Shows the sixth sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 7

Shows the seventh sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 8

Shows the eighth sheet of elementary wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagram YLAA0195 Sheet 9

Shows the ninth sheet of elementary wiring diagrams for the YLAA0195 series.

Connection Wiring Diagrams YLAA0195 Series

Connection Wiring Diagram YLAA0195 Sheet 1

Shows the first sheet of connection wiring diagrams for the YLAA0195 series.

Connection Wiring Diagram YLAA0195 Sheet 2

Shows the second sheet of connection wiring diagrams for the YLAA0195 series.

Elementary Wiring Diagrams YLAA0220 - YLAA0515 Series

Connection Diagrams YLAA0220 - YLAA0515 Series

Wiring Diagram - Power Supply

General Wiring Diagrams

Technical Data - Clearances

Section 6 Commissioning

Commissioning by Authorized Personnel

States that commissioning must be performed by authorized personnel.

Equipment Pre-Startup and Startup Checklist

Pre-Startup System Checks

Lists checks to be performed before the initial start-up of the system (No Power).

Unit Pre-Startup Checks

Specific checks for the unit's piping, refrigerant, oil level, and water pumps.

Compressor Heater Power-On Procedure

Instructions for energizing compressor heaters for a specified period before start-up.

Startup Panel Checks

Outlines checks to perform on the control panel after power is applied.

Superheat and Subcooling Verification

Leak Checking Procedures

Instructs to perform leak checks on compressors, fittings, and piping.

Unit Operating Sequence Explanation

Section 7 Unit Controls

YORK Millennium Control Center Overview

Overview of the microprocessor-based control system for chiller operation.

Status Key Functionality

Explains how to use the STATUS key to view chiller operating status and messages.

Safety Status Messages Explained

Explains safety messages indicating system or unit shutdowns due to exceeded thresholds.

Unit Safeties Overview

Lists unit safeties that cause all running compressors to shut down and their reset conditions.

Oper Data Key Display Examples

Shows displays for suction/discharge pressure, hours, starts, and cooling demand.

Entry Keys Overview

Explains the function of the ENTRY keys for viewing and changing programmed values.

Unit Status Display Information

Describes how the STATUS key displays running, cooling demand, and fault statuses.

System Safeties Description

Details system safeties that cause individual system shutdowns and lockout conditions.

Enter/ADV Key Functionality

Explains the role of the ENTER/ADV key in saving changes and advancing through menus.

Schedule/Advance Day Key Usage

Explains how to program the seven-day daily and holiday schedules.

Status Key Messages Reference

Fault Messages Classification

Categorizes fault messages related to system safeties and unit safeties.

Display/Print Keys Functionality

Oper Data Key Usage

Details how to access and navigate unit and system operating parameters.

Oper Data Quick Reference List

Print Key Functionality

Operating Data Printout Sample

Shows a sample printout of current system operating parameters.

History Displays Usage

Setpoints Keys Functionality

Cooling Setpoints Programming

Details how to program the cooling setpoint and range for chilled liquid control.

Program Key Parameters

Discharge Pressure Cutout Setting

Explains the programmable discharge pressure cutout safety feature.

Suction Pressure Cutout Setting

Describes the suction pressure cutout safety to prevent evaporator freeze-up.

Anti-Recycle Timer Configuration

Describes the programmable timer to prevent short cycling and protect compressor motors.

Table 11 Program Key Limits and Default Values

Table 12 Setpoints Quick Reference List

Unit Keys Options Programming

Options Key Navigation

Details how to scroll through and change programmable options via the OPTIONS key.

Table 13 Unit Keys Options Programming Quick Reference List

Section 8 Unit Operation

Capacity Control Logic

Explains the initiation of the start sequence and capacity control functions.

Lead/Lag and Compressor Sequencing

Describes lead/lag options for equalizing run hours and compressor sequencing within systems.

Anti-Recycle Timer Function

Describes the programmable timer to prevent short cycling and protect compressor motors.

Suction Pressure Limit Controls

Describes anticipatory controls to prevent low-pressure cutouts during loading.

Discharge Pressure Limit Controls

Details controls that unload the system before reaching high discharge pressure safety limits.

Leaving Chilled Liquid Control Logic

Explains how the unit controls leaving chilled liquid temperature within a set range.

Standard Condenser Fan Control

Details condenser fan control programming based on discharge pressure.

Return Chilled Liquid Control Operation

Return Chilled Liquid System Sequencing

Table 17 Condenser Fan Control Using Discharge Pressure (2, 3, or 4 Fans)

Table 18 Condenser Fan Control Using Discharge Pressure (5 or 6 Fans)

Load Limiting Functionality

BAS/EMS Temperature Reset Using Voltage or Current Signal

Section 9 Service and Troubleshooting

Clearing History Buffers Procedure

Explains how to clear history buffers, with a warning about data loss.

Service Mode - Chiller Configuration

Explains how to program chiller configuration settings like refrigerant and valve types.

Service Mode Access

Describes how to enter and exit Service Mode for unit configuration and diagnostics.

Service Mode - Analog & Digital Inputs

Describes how to view analog and digital inputs to the microboard.

Service Mode - Outputs Configuration

Details how to view and modify unit outputs within Service Mode.

Control Inputs and Outputs Reference

Checking Inputs and Outputs

Optional Printer Installation Guide

Troubleshooting Common Issues

Troubleshooting: No Display / Unit Not Operating

Troubleshoots issues related to no display or unit not operating.

Troubleshooting: Flow Switch/Remote Stop Fault

Troubleshoots faults related to flow switch or remote stop permissive signals.

Troubleshooting: Low Suction Pressure Fault

Addresses issues and solutions for low suction pressure faults.

Troubleshooting Common Issues (Continued)

Troubleshooting: Low Suction Pressure Fault (Continued)

Continues troubleshooting steps for low suction pressure faults.

Troubleshooting: MP / HPCO Fault

Troubleshoots faults related to motor protector or high pressure cutout.

Troubleshooting: High Discharge Pressure Fault

Addresses issues and solutions for high discharge pressure faults.

Troubleshooting: Compressor(s) Won't Start

Addresses issues when compressors fail to start, including demand and sensor checks.

Troubleshooting: Low Liquid Temperature Fault

Troubleshoots faults related to low leaving chilled liquid temperature.

Troubleshooting: Lack of Cooling Effect

Troubleshoots issues causing poor cooling effect, like fouled surfaces or low flow.

Section 10 Maintenance

Important Maintenance Considerations

Stresses the importance of proper maintenance for warranty and performance.

Compressor Maintenance Procedures

Details maintenance procedures for compressors, including oil level and analysis.

Microchannel Coil Cleaning Procedure

BACnet, Modbus, and YorkTalk 2 Communications

Table 29 Values Required for BAS Communication

BACnet and Modbus Communications Details

Table 31 BACnet and Modbus Communications Data Map

Table 31 BACnet and Modbus Communications Data Map (Continued)

YorkTalk 2 Communications Procedures

Received Data (Control Data)

Details the eight data values received from the MicroGateway or E-Link.

Transmitted Data Information

Explains the operational or history buffer data transmitted by the unit.

Table 32 YorkTalk 2 Communications Data Map

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