Johnson Controls York YCIV0247 - User Manual

R134A
YCIV STYLE A
MODELS
YCIV0157-0397, 60 HZ
(150-260 TONS)
AIR-COOLED SCREW LIQUID CHILLERS
E/V HIGH EFFICIENCY AND S/P STANDARD EFFICIENCY
AIR-COOLED SCREW LIQUID CHILLERS
INSTALLATION, OPERATION, MAINTENANCE
Supersedes: 201.23-NM2 (610) Form 201.23-NM2 (315)
035-21506-101
Issue Date:
March 9, 2015

Johnson Controls York YCIV0247 Specifications

General

Brand	Johnson Controls
Model	York YCIV0247
Category	Chiller
Language	English

Summary

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY

SAFETY

Covers safety standards, responsibility, and equipment misuse guidelines.

SECTION 2 - PRODUCT DESCRIPTION

General System Description

Overview of Latitude (YCIV) Air-Cooled Chiller design, VSD technology, and components.

Compressor

Describes the direct-drive semi-hermetic rotary twin-screw MTS compressor, its lubrication, and bearing design.

Evaporator

Details the shell and tube type Direct Expansion Evaporator, its design pressures, and construction.

Condenser

Explains the fin and tube condenser coil construction, fan types, and motor specifications.

UNIT MODEL NUMBER NOMENCLATURE

Explains the structure and meaning of the YCIV model number designation.

SECTION 3 - RIGGING, HANDLING AND STORAGE

LIFTING WEIGHTS

Refers to the unit nameplate for shipping weight and notes variations based on configuration.

LIFTING USING LUGS

Explains the use of accessory lifting lugs and attachment methods for safe unit lifting.

UNIT RIGGING

Details lift points dimensions for 2 and 3 compressor models.

SECTION 4 - INSTALLATION

LOCATION REQUIREMENTS

Essential site and space requirements for optimal performance and service access.

CHILLED LIQUID PIPING

Provides recommendations for satisfactory system operation, including pipework and flow switch installation.

ELECTRICAL CONNECTION

Offers recommendations for safe and satisfactory unit operation regarding power and control wiring.

POWER WIRING

SECTION 5 - COMMISSIONING

Refrigerant Charge

FIRST TIME START-UP

CHECKING SUBCOOLING AND SUPERHEAT

Instructions for checking subcooling and superheat measurements for correct refrigerant charge and system performance.

EQUIPMENT PRE-STARTUP AND STARTUP CHECKLIST

A comprehensive checklist for pre-startup and startup procedures, including panel checks and parameter settings.

SECTION 6 - TECHNICAL DATA

PHYSICAL DATA (ENGLISH - STANDARD EFFICIENCY)

PHYSICAL DATA (ENGLISH - HIGH EFFICIENCY)

ELECTRICAL DATA

Covers wiring diagrams and connections for 2 and 3 compressor models, including circuit breaker and terminal block configurations.

ISOLATOR SELECTION AND MOUNTING

REFRIGERANT FLOW DIAGRAM

Illustrates the refrigerant flow path through the chiller system components.

PROCESS AND INSTRUMENTATION DIAGRAM

Depicts system components and microprocessor control functions, including sensors and valves.

COMPONENT LOCATIONS

VSD COMPONENTS

SECTION 7 - OPERATION

Operating Controls

Explains the function of various controls like anti-recycle timer, evaporator pump/heater control, and alarms.

BASIC OPERATING SEQUENCE

Details the step-by-step process for starting and loading the chiller, including compressor staging.

NUMBER OF COMPRESSORS TO START

Minimum VSD Start Frequency

STANDARD IPLV CAPACITY CONTROL

Fuzzy Logic Control

Load Limiting Control

ECONOMIZER CONTROL

CONDENSER FAN CONTROL

SECTION 8 - MICROPANEL

VSD OPERATION AND CONTROLS

Explains the VSD logic board's function in controlling compressor speed and communications with the chiller control board.

VSD SAFETIES (FAULTS)

Lists and describes various software and hardware safeties that monitor VSD operating conditions and trigger shutdowns.

UNIT WARNINGS

VSD DATA KEY

Fault Shutdowns History

Chilled Liquid Setpoint Cooling Setpoints

Options

PROGRAM KEY

UNIT SETUP MODE

SECTION 9 - MAINTENANCE

GENERAL REQUIREMENTS

Scheduled Maintenance

Details periodic maintenance tasks to be performed by qualified service engineers.

TROUBLESHOOTING GUIDE

Provides a guide to diagnose and resolve common problems with their possible causes and actions.

LIMITED WARRANTY

Table 35 - COMPRESSOR MOTOR OVERLOAD SETTINGS AND MAX. VSD FREQUENCY

RECOMMENDED SPARE PARTS