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Daikin WDC079 User Manual

Daikin WDC079
58 pages
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Installation and Maintenance Manual IM 1044-2
Centrifugal Compressor Water Chillers
Group: Chillers
Part Number: 331374801
REV
0A
Date: August 2012
© 2013 Daikin Applied
Models WSC,WDC,WCC,HSC
(Includes High Voltage 10/11kV WDC/WCC models)
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Daikin WDC079 Specifications

General IconGeneral
BrandDaikin
ModelWDC079
CategoryChiller
LanguageEnglish

Summary

Chiller Installation Guide

Location and Mounting Requirements

Specifies requirements for mounting the chiller unit, including base, clearance, and indoor installation.

Operating and Standby Limits

Equipment Operating/Standby Conditions

Lists environmental and operational limits for chiller equipment, including temperature and standby conditions.

Low Condenser Water Temperature Operation

Operating at Low Condenser Water Temperatures

Explains how to operate chillers at low condenser water temperatures to improve performance, with equations.

Water Piping Installation

Water Piping and Installation Details

Covers pump selection, vessel drains, piping connections, materials, and welding precautions.

Flow Switch Installation and Function

Explains the function and installation of water flow switches for safety and operational interlocks.

Field Insulation Guide

Insulation Requirements for Cooling-Only Units

Illustrates insulation requirements for cooling-only units, showing areas to insulate and not insulate.

Oil Cooler Systems

Oil Cooler System Description

Explains oil cooler function, connections, and piping for water-cooled oil coolers.

Relief Valves and Vent Piping

Electrical System and Wiring

Electrical System Requirements and Checks

Covers electrical system requirements, wiring, voltage unbalance, and NEMA specifications.

Power Wiring and Motor Insulation

Details power wiring, phase sequence, and insulation procedures for high-voltage motors.

10/11kV Motor Unit Installation

Motor Terminal Box Installation

Step-by-step guide for installing the motor terminal box on 10/11kV units, emphasizing care.

Insulating Motor Terminals

Provides procedures for insulating motor terminals using foam, tape, and shrink tubing.

Connecting Power Leads

Details how power leads are brought into and connected within the terminal box.

Control Wiring Procedures

Multiple Chiller Setup

Multiple Chiller Interconnection

Explains interconnecting multiple chillers via pLAN network for coordinated operation.

MicroTech II Control Settings

OITS Settings for Multiple Compressors

Describes OITS settings for compressor operation, including max compressors and sequence.

Chiller Operating Sequence Management

Explains how MicroTech II manages staging and loading for multiple chillers.

Prestart System Checklist

Chiller Prestart Readiness Checklist

A checklist for system readiness before chiller start-up, covering water, electrical, and miscellaneous items.

Capacity Control System

Capacity Control System Overview

Explains how inlet vanes control compressor capacity via oil flow.

Compressor Surge and Lubrication

Hot Gas Bypass and Condenser Water

Seasonal Shutdown and Startup

System Repair and Evacuation

System Charging and Oil Analysis

System Charging Procedure

Provides steps for charging the refrigerant system after repairs and evacuation.

Maintenance Schedule

Comprehensive Maintenance Schedule

Presents a schedule of maintenance tasks by frequency (daily, weekly, monthly, etc.).

Long Term Storage Guidelines

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