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Installation and Owner's Manual
Failure to follow these instructions may affect the Warranty
Heat Pump Water Heater
Model: 200DHA20, 200DHA20P,
300DHA20, 300DHA20P
Installation Details
Owner's Information
Warranty
For advice, repairs and service, call:
1300 365 115 (Australia)
0800 729 389 (New Zealand)
Carefully remove all packaging and
transit protection from the heater before
installation. Dispose of the packaging
responsibly using re-cycling facilities
where they exist.
Specifications and materials may change without notice.
Effective for Ecosmart
H4128
Rev. A
IMPORTANT INFORMATION
water heaters manufactured and sold after 1st October 2023.
®
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Table of Contents
Related Manuals for Dux ecosmart 300DHA20
Summarization of Contents
Important Safety Information
Operational and Storage Safety Warnings
Covers high water temperatures, general prohibitions, and hydrogen gas hazards.
Pressure & Temperature Relief (PTR) Valve
Details on PTR valve installation, operation, dangers, and maintenance.
Over-Temperature Cut-Out and Electrical Safety
Safety guidelines for over-temperature cut-out, electrical connections, and component handling.
Installation Requirements and Location Safety
Covers general installation rules, specific Victorian requirements, and location considerations.
Clearances and Handling Precautions
Specifies required clearances around the unit and safe transport/handling procedures.
Plumbing Connections
Water Supply Quality and TDS Limits
Details on water quality, TDS limits, and suitability for hard water conditions.
Cold Water Inlet Requirements
Specifies valves, fittings, and pressure limits for the cold water inlet connection.
Hot Water Outlet and Drain Lines
Guidance on hot water outlet, PTR valve connection, drain lines, and condensate drainage.
Specifications
Unit Dimensions and Model Identification
Provides physical dimensions for the 200 and 300 series heat pump water heaters.
Performance and Electrical Ratings
Details storage capacity, energy input, current, element rating, and refrigerant type.
Filling and Draining
Water Heater Filling Procedure
Step-by-step instructions for safely filling the water heater before operation.
Water Heater Draining Procedure
Procedure for safely draining the water heater for maintenance or relocation.
Electrical Connection
General Connection and Wiring Standards
Requirements for single-phase supply, licensed tradespersons, and wiring standards.
Cover Access and Hardwired Connections
Instructions for accessing the electrical components and making hardwired connections.
Wiring Diagram
Electrical Wiring Schematic
Visual representation of electrical connections for the heat pump controller and components.
Wiring Legend and Specifications
Details wire colours, cable specifications, and component identification for the diagram.
Commissioning
Initial Operation and Startup
Steps to follow for the initial startup and operation of the water heater.
Principle of Operation
Heat Pump Working Principle
Explanation of how the heat pump extracts heat from the air to heat water.
Freeze Protection Features
Details on the defrost and anti-freeze functions to protect the unit in cold conditions.
Heat Pump Control Options
Operating Modes and Programming
Description of Auto, Eco, Boost, Holiday, and Scheduling modes for user control.
Temperature Setting Guidelines
Guidance on the recommended thermostat setting and adjustments.
Dux HP Smartphone App
App-Based Control and Features
Information on controlling the water heater via the Dux HP App on smartphones.
System Maintenance
Scheduled Maintenance Tasks
Details on recommended six-month and five-year servicing intervals and tasks.
Anode Replacement Guide
Step-by-step guide for replacing the water heater's anode rods.
Considering a Service Call?
Troubleshooting Common Issues
Guidance to help avoid service calls by addressing common problems like condensation or no hot water.
Diagnosing High Energy Bills or Low Hot Water
Tips for identifying causes of high energy usage or lack of hot water, including usage review and PTR valve checks.
Warranty
Warranty Coverage and Summary
Overview of warranty periods for parts, labour, and components for different applications.
Warranty Conditions and Exclusions
Details specific conditions, limitations, and exclusions that may void the warranty.
Making a Warranty Claim
Instructions on how to initiate a warranty claim, including required information and contact details.
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