Table of Contents
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Engineering Data
(Installation, Maintenance Manual)
Single Screw Chillers
This manual is applicable to following models and their derived and
modified models.
ZUWCM/DM ZUW.C-B ZUWY ZUWV ZUW-HCA
Thanks for purchasing DAIKIN chiller.
The Manual specifies safety, installation and maintenance precautions.
Please read through the manual before installation and use.
For future reference, please be sure to keep it safe.
Engineered for Flexibility and performance
IMM Chiller universal part
Category: Single Screw Chiller
Date: Mar. 2019
New Part No.: Z8100180-09
Prior Part No.: Z8100180-08
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Table of Contents
Related Manuals for Daikin ZUWV
Summarization of Contents
Nomenclature and Components
Model Nomenclature
Explains the coding system for flooded single screw chillers.
Flooded Chiller Nomenclature
Explains the coding system for flooded single screw chillers.
Falling-Film Chiller Nomenclature
Details the nomenclature for falling-film single screw chillers.
New Platform Chiller Nomenclature
Nomenclature for the new platform ZUW-HCA single screw chillers.
Component Locations Overview
Identifies major components like compressor, evaporator, and condenser.
Chiller Component Identification
Identifies major components like compressor, evaporator, and condenser.
Working Principles
Chiller Operational Principles
Explains the working cycle of chillers without a flash-tank economizer.
Principles without Flash-tank Economizer
Explains the working cycle of chillers without a flash-tank economizer.
Principles with Flash-tank Economizer
Details the working cycle of chillers equipped with a flash-tank economizer.
Safety Precautions
Comprehensive Safety Guidelines
Crucial safety measures for installing chillers to prevent accidents.
Installation Safety
Crucial safety measures for installing chillers to prevent accidents.
Operational Safety
Essential safety practices for operating the chiller correctly.
Relocation and Repair Safety
Safety protocols for moving or repairing the chiller.
Relief Valve Safety Notes
Specific safety information regarding the chiller's relief valve.
Chiller Transit and Handling
Transit and Handling Procedures
Steps to inspect the chiller upon delivery for model, quantity, and condition.
Post-Arrival Inspection
Steps to inspect the chiller upon delivery for model, quantity, and condition.
Lifting Method
Illustrates the correct method for lifting the chiller unit.
Lifting Requirements
Essential requirements for safely lifting the chiller.
Horizontal Transport
Precautions for moving the chiller horizontally.
Installation Procedures
Chiller Installation Guide
Guidelines for selecting a suitable installation site and foundation.
Location and Foundation
Guidelines for selecting a suitable installation site and foundation.
Dismantling and Reassembly
Procedures for dismantling and reassembling the chiller for installation.
Piping Installation
Requirements for connecting water and refrigerant piping.
Electrical Installation
Guidelines for safe and correct electrical wiring and connections.
Pre-Operation Checks
Pre-Test Run Confirmation
Verifying insulation, connections, and grounding of the power circuit.
Power Circuit Checks
Verifying insulation, connections, and grounding of the power circuit.
Cable Connection Checks
Confirming correct cable interlocks, contacts, and terminal tightness.
Power Supply Validation
Ensuring voltage, frequency, and phase balance meet specifications.
Water System Checks
Verifying water filling, pressure, leakage, and air removal.
Chiller Valve Status
Confirming the correct on/off state of all valves.
Control Panel Settings Check
Verifying control panel settings align with the customer system.
Chiller Functions
Chiller Operational Functions
PID control logic for maintaining chilled water temperature.
Automatic Temperature Control
PID control logic for maintaining chilled water temperature.
Low Load Capacity Control
Managing chiller capacity at reduced cooling loads.
Start/Stop Cycle Management
Understanding limits and effects of frequent compressor start/stop cycles.
Maintenance Procedures
Scheduled Maintenance and Servicing
Regular checks on protective devices according to regulations.
Protective Device Maintenance
Regular checks on protective devices according to regulations.
Pre-Maintenance Steps
Essential steps before commencing maintenance work.
Routine Maintenance Tasks
Regular checks on water, air, and electrical systems.
Maintenance Contract Options
Recommendation to secure a maintenance contract for service.
Refrigerant and Oil Specifications
Details on correct refrigerant and oil types and quantities.
Scheduled Maintenance Overview
General outline of routine maintenance schedules and adjustments.
Appendix B - Maintenance Schedule
Maintenance Schedule and Inspection Cycle
Inspection criteria for compressor bearings, body, and screw rotor.
Compressor Component Checks
Inspection criteria for compressor bearings, body, and screw rotor.
Motor Checks
Inspection of motor insulation resistance and operation.
Injection Expansion Valve Checks
Inspection of the injection expansion valve's condition and function.
Electric Expansion Valve Checks
Inspection of the electric expansion valve for capacity control.
Oil Filter Checks
Monitoring the oil filter's pressure difference and condition.
Discharge Valve Checks
Inspection for abnormal operation or noise of the discharge valve.
Lubricant Oil Quality
Assessing lubricant oil for contamination and quality.
Heat Exchanger Tube Cleaning
Procedures for cleaning heat exchanger tubes.
Water Pressure Drop Monitoring
Checking water pressure drop against chiller specifications.
Valve Functionality Checks
Verifying the correct operation of various valves.
Control System Component Checks
Inspection of solenoids, controllers, fuses, contactors, sensors, relays.
Miscellaneous Component Checks
Checks for time relays, voltage switches, power supply, water quality.
Appendix C - Flow Switches
Flow Switch Installation and Operation
Technical dimensions for installing flow switches.
Flow Switch Dimensions
Technical dimensions for installing flow switches.
Flow Switch Operating Conditions
How flow switches function based on flow rate.
Flow Direction Sheet Installation
Guidance on installing flow direction sheets for switches.
Flow Switch Installation Requirements
Specific requirements for installing flow switches on pipelines.
Flow Switch Adjustment
Procedure for adjusting flow switch settings.
Flow Switch Operational Checks
Procedures to verify flow switch function after installation.
Flow Switch Troubleshooting
Common issues and solutions for flow switches.
Appendix D - Wiring Diagrams
Field Wiring Diagrams
Illustrates field wiring for the control cable.
Control Cable Wiring Diagram
Illustrates field wiring for the control cable.
Wiring Notes and Instructions
Important notes and instructions for field wiring connections.
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