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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 300DHA20P
Summarization of Contents
Important Safety Information
Relief Valve
Details about the Pressure & Temperature Relief (PTR) Valve installation and operation.
Over-Temperature Energy Cut-Out
Information on the over-temperature energy cut-out and its safety implications.
Electrical Safety
Guidelines for safe electrical connection and handling of the water heater.
Cold Water Connection
Details on the permanent connection requirements for the cold water supply.
General Installation Requirements
Mandatory requirements for installation by a licensed tradesperson.
Note for Victoria Installation
Specific requirements for licensed installation in Victoria.
Pool Heating Restriction
Prohibition on using the water heater for pool heating purposes.
Location Considerations
Guidance on optimal placement for efficient operation and accessibility.
Circulated Hot Water Systems
Advice on integration with circulated hot water systems.
Water Heater Support
Requirements for stable and secure installation of the water heater.
Clearances and Airflow
Specifies minimum clearances for proper airflow and servicing.
Transport and Handling
Guidelines for safe moving and handling of the water heater.
Plumbing Connections
Water Supply Considerations
Details on water conditions, TDS levels, and anode selection.
Cold Water Connection
Requirements for connecting the cold water supply to the unit.
Water Supply Pressure
Maximum pressure ratings and requirements for pressure reducing valves.
Note for NZ, SA, WA Pressure
Specific requirement for expansion control valve in certain regions.
Hot Water Connection
Guidance on connecting the hot water outlet pipe.
Temperature Protection
Mandatory fittings for scald prevention and tempering valve recommendations.
Relief Valve Installation
Details on the PTR valve, its rating, and installation at the 'RELIEF VALVE' socket.
Relief Valve Drain Line
Requirements for the PTR valve drain line installation.
Condensate Drain Line
Instructions for connecting the condensate drain line.
Filling and Draining
Filling the Water Heater
Step-by-step procedure for filling the water heater before operation.
Draining the Water Heater
Procedure for safely draining the water heater.
Electrical Connection
General Electrical Connection
Overview of electrical requirements, supply types, and licensed tradesperson.
Removing the Electrical Cover
Procedure for safely accessing the electrical components.
Hardwired Connections
Details on conduit entry and wiring connections for hardwired models.
Replacing the Electrical Cover
Steps for correctly re-installing the electrical cover.
Commissioning
Initial Operation
Step-by-step guide for the initial startup and operation of the water heater.
Principle of Operation
Freeze Protection
Explanation of active-defrost and anti-freeze functions for cold weather.
Heat Pump Control Options
Auto Mode
Default mode, heats to 60°C, uses heat pump within specified ambient temps.
Eco Mode
Uses only heat pump for heating, element for freeze prevention.
Boost Mode
Operates heat pump and element together for faster heating.
Holiday Mode
Maintains tank temp above 10°C for long periods of non-use.
Scheduling Operation
Option to schedule operation times via the Dux HP App.
System Maintenance
Six Month Service
Owner-maintainable checks including PTR valve and debris clearing.
Five Year Service
Service to be performed by a licensed tradesperson, includes component replacement.
Anode Replacement
Step-by-step instructions for replacing the water heater's anode rods.
Considering a Service Call?
Water Discharge from Condensation Drain Line
Explanation of normal condensation water discharge during operation.
Troubleshooting No Hot Water
Checks for tripped circuit breakers or tariff issues when no hot water is available.
Error Detection using Dux HP App
Using the app to identify and diagnose errors or continuous operation.
High Energy Bills or Insufficient Hot Water
Checks for usage, sizing, obstructions, and reheat times.
Trickle of Water from PTR Valve
Diagnosing and fixing minor water discharge from the PTR valve.
Water Discharge from PTR Valve
Explains normal discharge and when continuous leakage indicates a problem.
Warranty
Other Components Warranty
Warranty details for components other than refrigeration and tank.
Refrigeration Component Warranty
Warranty for refrigeration system components like compressor and evaporator.
Tank Failure Warranty
Warranty coverage for the inner storage cylinder failure.
Solar Victoria's Solar Home Program Warranty
Specific warranty for units installed under the Solar Victoria program.
Warranty Conditions
General terms and conditions applicable to the water heater warranty.
Warranty Exclusions
List of conditions and defects that are not covered by the warranty.
Commencement of Warranty
How the warranty period is determined (installation vs. manufacture date).
Exclusion and Limitation of Liability
Limitations on Dux's liability for consequential or indirect losses.
Australian Consumer Law (ACL)
Consumer rights and remedies under the ACL for faulty goods.
Consumer Guarantees Act 1993 (New Zealand)
Consumer rights and remedies under the NZ Consumer Guarantees Act.
How to Make a Warranty Claim
Step-by-step guide for submitting a warranty claim.
Contact Details
Contact information for Dux Manufacturing Limited for support and claims.
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