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Daikin WDC 126 User Manual

Daikin WDC 126
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 WDC 126 Specifications

General IconGeneral
BrandDaikin
ModelWDC 126
CategoryChiller
LanguageEnglish

Summary

Centrifugal Chiller Installation

Receiving and Handling of Chillers

Instructions for inspecting and safely handling the Daikin centrifugal water chillers upon receipt, including rigging considerations.

Location and Mounting of Chillers

Guidelines for properly siting and mounting the centrifugal chillers on a level base, ensuring adequate service clearance.

Water Piping Requirements

Provides guidelines for water pump selection, vessel drains, evaporator and condenser water piping, and insulation.

Field Insulation Guide for Chillers

Insulation Requirements for Cooling-only Units

Illustrates insulation placement requirements for cooling-only centrifugal chiller units, indicating areas to insulate or not.

Insulation Details for Motor and Chiller Components

Shows specific areas for insulation on chiller components like tube sheets, motor terminal boxes, and chiller heads.

Oil Cooler System Information

Oil Cooler Data for WSC Units

Presents data for water-cooled oil coolers, including flow rates, temperatures, and pressure drops for WSC units.

Relief Valves and Venting

Relief Valve Data and Locations

Tabulates relief valve locations, pressure settings, and discharge capacities for various Daikin chiller components.

Electrical System Requirements

Power Wiring and Motor Rotation

Provides guidance on compressor power wiring, phase sequence, and motor rotation requirements for safe operation.

10/11kV Motor Unit Installation

Installing the Motor Terminal Box

Provides step-by-step instructions for mounting the terminal box on 10/11kV compressor motors, ensuring proper alignment.

Insulating Motor Terminals and Connections

Describes methods for insulating motor terminals and housing using thermal foam, sealant tape, and heat shrink tubes.

Connecting Power Leads to Terminal Box

Explains how power leads are brought into the terminal box and connected to the landing points for compressor terminals.

Chiller Control Wiring

Motor Terminal Box to Chiller Control Panel Wiring

Describes field wiring requirements between the motor terminal box and chiller control panel for transmitting motor information.

Control Power Wiring Options

Control Power Source Options

Outlines three sources for supplying control power to the chiller: factory-mounted starter, freestanding starter, or separate circuit.

Field Wiring, Controls, and Starters

Prestart System Checklist

Chiller Commissioning Procedures

MicroTech II Control System Overview

Describes the Daikin MicroTech II control system, including operator touchscreen, unit control panel, and compressor control panel.

Capacity Control System Operation

Lubrication System for Centrifugal Chillers

Hot Gas Bypass and Condenser Water

Chiller Maintenance Procedures

Routine Lubrication Maintenance

Offers guidance on lubrication servicing, emphasizing caution and the necessity of trained personnel for maintenance.

Electrical System Maintenance

Details maintenance tasks for the electrical system, including checking current draw, oil heaters, protection controls, and motor resistance.

Annual Shutdown and Startup Procedures

Outlines procedures for annual shutdown and startup, including draining water, electrical checks, and safety precautions.

Repair of Chiller Systems

Pressure Relief Valve Replacement

Provides procedures for replacing leaking pressure relief valves using a three-way shutoff valve.

Pumping Down the Refrigerant System

Explains the process of pumping down the refrigerant system, emphasizing care to avoid evaporator freezing.

Pressure and Leak Testing Procedures

Details pressure testing and leak testing procedures for systems with potential damage or lost refrigerant charge.

System Evacuation and Charging

Describes evacuating the system to microns and charging the refrigerant system after repairs.

Oil Analysis and Interpretation

Explains the importance and interpretation of oil wear metal analysis for assessing internal chiller condition.

Maintenance Schedule and Tasks

Unit Maintenance Checklist

Lists daily, weekly, monthly, quarterly, and annual maintenance tasks for the chiller unit, compressor, and lubrication system.

Long Term Storage Procedures

Chiller Storage Guidelines

Outlines tasks for storing units, including leak testing, visual inspection, pressure checks, and protection against humidity.

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