Johnson Controls York YCIV0207 - 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 YCIV0207 Specifications

General

Brand	Johnson Controls
Model	York YCIV0207
Category	Chiller
Language	English

Summary

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY

Safety

Covers general safety guidelines, standards, responsibilities, and emergency shutdown procedures.

SECTION 2 - PRODUCT DESCRIPTION

General System Description

Explains the Latitude (YCIV) Air-Cooled Chiller's integration of screw compressor design and VSD technology for efficiency.

Compressor

Details the direct-drive, semi-hermetic rotary twin-screw MTS compressor design and lubrication system.

Evaporator

Condenser

Capacity Control

Explains how the chiller achieves capacity control through VSD speed adjustments and compressor staging.

Power and Control Panel

Microprocessor and VSD Controls

Details the function of microprocessors and VSDs in controlling chiller operations, including safeties and temperature control.

Variable Speed Drive (VSD)

Explains the VSD architecture, including AC to DC rectifier, DC link filter, inverter sections, and output suppression network.

SECTION 3 - RIGGING, HANDLING AND STORAGE

Rigging and Lifting Procedures

Covers safe lifting weights, moving, unit removal, and using lifting lugs/shackles.

SECTION 4 - INSTALLATION

Location Requirements

Specifies criteria for unit placement, including outdoor, indoor, and clearance requirements.

Chilled Liquid Piping

Outlines recommendations for satisfactory chilled liquid piping installation, including general requirements and water treatment.

Ductwork Connection

Electrical Connection

Covers essential recommendations for safe and satisfactory electrical connections, including power and control wiring.

System Inputs

SECTION 5 - COMMISSIONING

Preparation

Covers essential checks before starting the unit, including electrical lockout, inspection, and system preparation.

Grounding and Water System

Programmed Settings

First Time Start-Up

Details the critical first-time start-up procedure, including checks for interlocks and compressor operation.

Checking Subcooling and Superheat

Provides detailed steps for checking subcooling and superheat to ensure correct refrigerant charge and system performance.

SECTION 6 - TECHNICAL DATA

Physical Data (English & SI)

Electrical Data

Details electrical wiring diagrams, unit short circuit withstand, and field wiring specifications for 2 and 3 compressor models.

Component Locations Overview

Isolator Information

Technical Data - Clearances

SECTION 7 - OPERATION

Operating Controls

Explains key operating controls like anti-recycle timer, fan control, alarms, and unit switch.

Basic Operating Sequence

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

Number of Compressors to Start

Minimum VSD Start;Run Frequency

Acceleration; Deceleration Rate

Standard IPLV Capacity Control

Fuzzy Logic Control

Load Limiting Control

Covers various load limiting functions (Motor Current, Discharge Pressure, Suction Pressure, Ambient Temp, Baseplate Temp) to prevent safety trips.

Economizer Control

Condenser Fan Control

SECTION 8 - MICROPANEL

VSD Operation and Controls

Describes the VSD Logic Board functions, commands, and operation, including start-up and frequency control.

VSD Safeties (Faults)

Lists and explains various VSD safeties and fault conditions, including DC Bus voltage, current, and temperature issues.

Sensor Displays

Program Key Operations

Manual Override Key

Service Key Operation

Serial Number Programming

Enabling Optimized High IPLV Mode

Unit Setup Mode

Connectivity Options

SECTION 9 - MAINTENANCE

General Maintenance Requirements

Daily Maintenance Checks

Scheduled Maintenance

Troubleshooting Guide

Offers systematic guidance for diagnosing and resolving common chiller problems and fault conditions.

Limited Warranty