Johnson Controls YORK Tempo YLAA0120SE - User Manual

YLAA0070 - YLAA0175
AIR-COOLED SCROLL CHILLERS
WITH MICROCHANNEL CONDENSER COILS
STYLE A (60 Hz)
70 - 175 TON
246-613 KW
INSTALLATION, OPERATION, MAINTENANCE
AIR-COOLED LIQUID CHILLERS
HERMETIC SCROLL
Supersedes 150.72-NM1 (110)
Form 150.72-NM1 (1020)
R-410A
035-21911-000
Interim
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.

Johnson Controls YORK Tempo YLAA0120SE Specifications

General

Brand	Johnson Controls
Model	YORK Tempo YLAA0120SE
Category	Chiller
Language	English

Summary

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY

WARRANTY

Details warranty coverage, terms, and conditions for YORK YLAA chillers.

SAFETY AND QUALITY

Lists applicable safety, quality standards, and codes YLAA chillers comply with.

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY (CONTINUED)

MISUSE OF EQUIPMENT

Specifies intended applications and warns against improper use of the equipment.

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY (CONTINUED)

Electrical Safety

Details safety precautions for electrical equipment, including grounding and power isolation.

Emergency Shutdown

SECTION 2 - PRODUCT DESCRIPTION (CONTINUED)

Millennium Control Center

Describes the control center cabinet, display, and keypad features for operation.

SECTION 2 - PRODUCT DESCRIPTION (CONTINUED)

COMMUNICATIONS

Details communication capabilities like BACnet, Modbus, and optional N2/LON.

PRODUCT IDENTIFICATION NUMBER (PIN)

BASIC UNIT NOMENCLATURE

Explains the nomenclature used for identifying unit models and features.

PROCESS AND INSTRUMENTATION DIAGRAM

FIG. 6 - PROCESS AND INSTRUMENTATION DIAGRAM

Provides a schematic of the process and instrumentation for the chiller.

SECTION 3 - HANDLING AND STORAGE

MOVING THE CHILLER

Explains safe methods for moving the chiller unit, including lifting instructions.

RIGGING INSTRUCTIONS

FIG. 7 - UNIT RIGGING;LIFTING

SECTION 4 - INSTALLATION

LOCATION AND CLEARANCES

Guides on selecting an installation location and maintaining necessary clearances.

SECTION 4 - INSTALLATION (CONTINUED)

CHILLED LIQUID PIPING

SECTION 4 - INSTALLATION (CONTINUED)

WIRING

Covers field wiring requirements, including fused disconnect switches and conductor types.

SINGLE-POINT SUPPLY CONNECTION - TERMINAL BLOCK, NON-FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER

FIG. 9 - SINGLE-POINT SUPPLY CONNECTION - TERMINAL BLOCK, NON-FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER

USER CONTROL WIRING INPUTS

FIG. 10 - CONTROL WIRING INPUTS

USER CONTROL WIRING OUTPUTS

FIG. 11 - CONTROL WIRING OUTPUTS

SECTION 5 - TECHNICAL DATA

OPERATIONAL LIMITATIONS (ENGLISH)

Outlines operational limits for chiller performance and temperature ranges.

Voltage Limitations

Specifies absolute voltage limitations to prevent compressor damage.

SECTION 5 - TECHNICAL DATA (CONTINUED)

PHYSICAL DATA (ENGLISH)

SECTION 5 - TECHNICAL DATA (CONTINUED)

ELECTRICAL DATA

Provides electrical data including micro panel power supply and voltage ranges.

ELECTRICAL NOTES AND LEGEND

Provides a legend for electrical designations and notes.

SECTION 5 - TECHNICAL DATA (CONTINUED)

ELECTRICAL NOTES

Provides important electrical notes related to ampacity, fuses, circuit breakers, and wiring.

WIRING DIAGRAMS

FIG. 12 - ELEMENTARY WIRING DIAGRAM, SHT 1

Shows the first sheet of the elementary wiring diagram.

ELEMENTARY WIRING DIAGRAMS (CONT’D)

FIG. 13 - ELEMENTARY WIRING DIAGRAM, SHT 2

Shows the second sheet of the elementary wiring diagram.

FAN WIRING

FIG. 14 - ELEMENTARY WIRING DIAGRAM, SHT 3

Shows the third sheet of the elementary wiring diagram, focusing on fan wiring.

FAN WIRING (CONT’D)

FIG. 15 - ELEMENTARY WIRING DIAGRAM, SHT 4

Shows the fourth sheet of the elementary wiring diagram, continuing fan wiring.

CONNECTION DIAGRAMS

FIG. 16 - CONNECTION DIAGRAM, SHT 1

MICRO PANEL CONECTIONS

FIG. 17 - CONNECTION DIAGRAM, SHT 2

POWER OPTIONS CONNECTION DIAGRAM

FIG. 18 - CONNECTION DIAGRAM, SHT 3

COMPRESSOR WIRING

FIG. 19 - CONNECTION DIAGRAM, SHT 6

WIRING DIAGRAM - POWER SUPPLY

FIG. 23 - WIRING DIAGRAM, SINGLE POINT WIRING OPTIONS

TECHNICAL DATA - CLEARANCES

FIG. 25 - UNIT CLEARANCES - ALL MODELS

ONE INCH DEFLECTION SPRING ISOLATORS INSTALLATION INSTRUCTIONS

SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT

SLRS SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT

Installation and Adjustment

INSTALLATION OF 1” DEFLECTION MOUNTS

Installation Instructions

SECTION 6 - COMMISSIONING

PREPARATION - POWER OFF

Outlines basic checks to be made with the unit power switched OFF.

Refrigerant Charge

Details procedures for checking refrigerant charge and leak testing.

Compressor Oil

SECTION 6 - COMMISSIONING (CONTINUED)

PREPARATION - POWER ON

Guides on performing commissioning checks with power applied to the chiller.

Compressor Heaters

Flow Switch

EQUIPMENT PRE-STARTUP AND STARTUP CHECKLIST

Pre-Startup

Lists unit checks to perform before initial start-up without power.

Startup

Lists checks for panel power, voltage, and programming setpoints.

CHECKING SUPERHEAT AND SUBCOOLING

Superheat Check

Details the procedure for checking superheat after steady-state operation.

LEAK CHECKING

Instructs to leak check all components to ensure no leaks.

UNIT OPERATING SEQUENCE

Operating Sequence Description

Describes the operating sequence for the chiller, including compressor and fan startup.

SECTION 7 - UNIT CONTROLS

YORK MILLENNIUM CONTROL CENTER

Introduces the microprocessor-based control system and its components.

IPU II AND I;O BOARDS

SECTION 7 - UNIT CONTROLS (CONTINUED)

KEYPAD

STATUS KEY

Unit Status

Explains how to check current chiller operating status and message categories.

Unit Controls (Continued)

Fault Safety Status Messages

Explains safety messages that occur when safety thresholds are exceeded.

System Safeties (Continued)

Continues explanations of system safeties.

Unit Safeties

Defines unit safeties as faults that shut down all running compressors.

Return Chilled Liquid Control

System Safeties

Defines system safeties as faults that shut down individual systems.

High Discharge Pressure

Explains the high discharge pressure cutout safety.

Low Ambient Temp Cutout

Explains the low ambient temperature cutout safety.

Schedule;Advance Day Key

Details how to set the seven-day daily and holiday schedules.

Low Leaving Chilled Liquid Temp Cutout

Details the low leaving chilled liquid temperature cutout safety.

Unit Controls (Continued)

Motor Protector;Mechanical High Pressure Cutout

Explains the function of motor protector and HPCO in preventing overheating and high pressure.

STATUS KEY MESSAGES

TABLE 8 - STATUS KEY MESSAGES QUICK REFERENCE LIST

DISPLAY;PRINT KEYS

The OPER DATA key

Explains how to access and scroll through unit and system operating parameters.

Unit Controls (Continued)

Oper Data Quick Reference List

History Printout

Print Key

Operating Data Printout

SETPOINTS KEYS

Cooling Setpoints

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

Program Key

Discharge Pressure Cutout

Describes the programmable discharge pressure cutout setting.

Suction Pressure Cutout

Explains the suction pressure cutout setting for evaporator freeze-up protection.

Anti-Recycle Timer

SETPOINTS QUICK REFERENCE LIST

Table 12 provides a quick reference of the setpoints list for the Setpoints Keys.

UNIT KEYS

Options Key

Explains how to access and change programmable options using the OPTIONS key.

UNIT KEYS (CONTINUED)

Option 10 - Manual Override Mode

Option 14 - Unit Type

Notes that unit type must be 'Liquid Chiller' and how to change it.

UNIT KEYS OPTIONS PROGRAMMING QUICK REFERENCE LIST

Table 13 provides a quick reference list for the Unit key setpoints.

SECTION 8 - UNIT OPERATION

CAPACITY CONTROL

Explains how to initiate the start sequence and evaluate cooling needs.

SUCTION PRESSURE LIMIT CONTROLS

Describes controls to prevent the unit from reaching low-pressure cutouts.

DISCHARGE PRESSURE LIMIT CONTROLS

Details controls to unload the system before reaching safety limits.

LEAVING CHILLED LIQUID CONTROL

Explains how the setpoint and range regulate leaving chilled liquid temperature.

Unit Operation (Continued)

Leaving Chilled Liquid Control - Compressor Staging

Describes compressor staging for leaving chilled liquid control based on temperature.

Leaving Chilled Liquid System Lead;Lag and Compressor Sequencing

RETURN CHILLED LIQUID SYSTEM LEAD; LAG AND COMPRESSOR SEQUENCING

Unit Operation (Continued)

ANTI-RECYCLE TIMER

STANDARD CONDENSER FAN CONTROL

TABLE 17 - YLAA STANDARD CONDENSER FAN CONTROL USING DISCHARGE PRESSURE ONLY (2, 3, OR 4 FANS PER SYSTEM)

TABLE 18 - YLAA STANDARD CONDENSER FAN CONTROL USING DISCHARGE PRESSURE ONLY (5 OR 6 FANS PER SYSTEM)

Fan Stage Control Logic

LOAD LIMITING

TABLE 19 - COMPRESSOR OPERATION - LOAD LIMITING

ALARM STATUS

BAS;EMS TEMPERATURE RESET USING A VOLTAGE OR CURRENT SIGNAL

Remote Temperature Reset Calculation

SECTION 9 - SERVICE AND TROUBLESHOOTING

SERVICE MODE

Explains how to enter Service Mode to enable/disable outputs, change parameters, and view inputs.

SERVICE MODE - CHILLER CONFIGURATION

Configuration Selections

SERVICE MODE - ANALOG AND DIGITAL INPUTS

Analog and Digital Input Viewing

MICROBOARD LAYOUT

FIG. 29 - MICROBOARD LAYOUT

TROUBLESHOOTING

TABLE 27 - TROUBLESHOOTING

Provides a table of common problems, their causes, and solutions.

TROUBLESHOOTING (CONT’D)

TABLE 27 (cont’d) - TROUBLESHOOTING

Continues the troubleshooting table with more problems, causes, and solutions.

BACNET, MODBUS AND YORKTALK 2 COMMUNICATIONS

Communication Protocols

Explains reading and modifying data using serial communication protocols.

TABLE 29 - VALUES REQUIRED FOR BAS COMMUNICATION

BAS Communication Setup Requirements

BACnet and Modbus Communications

Analog Write Points

Binary Write Points

TABLE 31 - BACNET AND MODBUS COMMUNICATIONS DATA MAP

BACnet and Modbus Data Map

TABLE 32 - YORKTALK 2 COMMUNICATIONS DATA MAP

Yorktalk 2 Communications Data Map

R410 A PRESSURE TEMPERATURE CHART

Pressure Temperature Chart