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(e.g. 26ENG5N)
To be installed and serviced only by an authorised person.
This appliance is not suitable for use as a pool heater.
The "authorised installing person" is responsible for:
1. Correct commissioning of this appliance
2. Ensure unit performs to the specification stated on the data label
3. Demonstrate operation of unit to customer before leaving
4. Hand these instructions to customer
This appliance must be installed in accordance with the manufacturer's installation instructions and Plumbing
Code of Australia (PCA) and all Local Building, Water and Gas fitting regulations (AS/NZS 5601, AS/NZS 3000, AS/
NZS 3500.4).
Failure to install this appliance in accordance with these installation instructions may void warranty.
In the interest of continued product improvement, Dux Manufacturing reserves the right to alter these
specifications without notice.
FH9M002
Rev. 09/21
GISI094
Installation Manual
AU Service Department : 1300 365 115
NZ Service Department : 0800 729 389
Non Condensing Models
26ENG5N
26ENG5L
26ENG6N
26ENG6L
21ENB5N
21ENB5L
21ENB6N
21ENB6L
17ENB5N
17ENB5L
17ENB6N
17ENB6L
WARNING
FOR CONTINUED SAFETY OF THIS APPLIANCE IT
MUST BE INSTALLED, OPERATED AND MAINTAINED
IN ACCORDANCE WITH THE MANUFACTURER'S
INSTRUCTIONS.
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Summary of Contents for Dux 26ENG5L
- Page 1 NZS 3500.4). Failure to install this appliance in accordance with these installation instructions may void warranty. In the interest of continued product improvement, Dux Manufacturing reserves the right to alter these specifications without notice. AU Service Department : 1300 365 115...
- Page 2 Installation Manual Potential dangers from accidents during installation and use are divided into the following four categories. Closely observe these warnings, they are critical to your safety. DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
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Page 3: Table Of Contents
Installation Manual Contents Before Installation About the Water Heater Choosing an Installation Location Installation Clearances Installation of the Water Heater Connecting the Gas Supply Connecting the Water Supply Connecting Electricity Remote Controller Trial Operation Maintenance... -
Page 4: Before Installation
Installation Manual 1. Before Installation THIS APPLIANCE DELIVERS WATER NOT WARNING EXCEEDING 50 C IN ACCODRANCE WITH AS 3498. Check the Gas WARNING — THIS APPLIANCE MUST ONLY BE INSTALLED IN ACCORDANCE WITH THE • Check that the data label (left side of casing). ACCEPTABLE PLUMBING CONFIGURATIONS •... -
Page 5: About The Water Heater
Installation Manual 2. About the Water Heater 2.1 Included Accessories The following accessories are included with the Water Heater. Check for any missing items before starting installation. Anchoring Screw (× 5) Owner’s Guide, Installation Manual (this document) (1 each) - Page 6 • Specifications may be changed without prior notice. • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Item Specification 50°C model 26ENG5N 26ENG5L 21ENB5N 21ENB5L 17ENB5N 17ENB5L Model Name 55°C model...
- Page 7 Installation Manual 2.3 Dimensions 26ENG series < Unit: mm > GAS INLET(R3/4) HOT WATER OUTLET(R3/4) COLD WATER INLET(R3/4) WIRING THROUGHWAYS (VIEW FROM TOP) 2×6×24 OBLONG HOLE 2× 20.5 FLUE COLLAR AIR INLET STATUS DISPLAY AIR INLET WATER DRAIN VALVE AIR INLET (WATER FILTER) 2×...
- Page 8 Installation Manual 17/21ENB series <Unit : mm> VIEW FROM TOP GAS INLET(R3/4) 21ENB Series WIRING HOT WATER OUTLET(R3/4) THROUGHWAYS COLD WATER INLET(R3/4) 4-φ13 2-6 13 OBLONG HOLE FLUE EXHAUST 17ENB Series FLUE EXHAUST AIR INLET AIR INLET COLD WATER INLET AIR INLET WIRING THROUGHWAYS GAS INLET...
- Page 9 Installation Manual 2.4 Component Details Example 26ENG series Flue collar High Limit Switch Heat Exchanger Freeze Preven on Heater Thermal Fuse Freeze Preven on Heater Flame Rod Igni on Plug Igniter Burner manifold & gas valve Thermistor-Cold Water Circuit board Water Flow Sensor Water Servo Status Display...
- Page 10 Installation Manual 17/21ENB series Flue exhaust High limit switch Heat exchanger Anti-frost heater Thermal fuse Flame rod Ignition plug Igniter Burner manifold & gas valve Freeze protection thermostat Circuit board Anti-frost heater Water inlet thermistor Main flow control valve Water flow sensor Water outlet thermistor Fan motor Anti-frost heater...
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Page 11: Choosing An Installation Location
Installation Manual 3. Choosing an Installation Location DANGER CAUTION Consideration to the surroundings • This Water Heater is for outdoor installation only. Do not install indoors. • Do not install the Water Heater where the • Do not enclose the termination with exhaust will blow on outer walls, other walls corrugated metal or other materials. -
Page 12: Installation Clearances
Installation Manual 4. Installation Clearances WARNING Before installing, check for the following: The location of the flue terminal must comply with the clearances shown on this page. If you are unsure about clearances not indicated here, in general refer to AS/NZS 5601, or your local authority. In Western Australia refer to the WA Office of Energy rules and regulations. -
Page 13: Installation Of The Water Heater
2. Insert and tighten the screw and hang the Water or earthquakes. Heater by the upper wall mounting bracket. 5.2 Elevation Adjustment Above 600 m (26ENG series only) If installation altitude is higher than 600 m, contact DUX to change the altitude settings. -
Page 14: Connecting The Gas Supply
Installation Manual 6. Connecting the Gas Supply Pressure Test Follow the instructions from the gas supplier. The appliance and its gas connections must be leak Gas Type tested before placing the appliance in operation. The gas type indicated on the Water Heater’s rating If test pressures are in excess of 1/2 psi (3.5 kPa), plate (NG or ULPG) must match the type of gas the appliance must be completely disconnected... - Page 15 Installation Manual NOTE • Ensure that the gas pipe size 2. • Determine the gas type used and supply gas is correct. If undersized the Pressure, and enter it. appliance will not operate • Determine the piping material and enter it to correctly.
- Page 16 Installation Manual 4. • Enter the demand which is the amount of gas 5. • Enter the input rating for each appliance in the flowing through a section of pipe in the table table below. below. • Enter the length from each appliance to the •...
- Page 17 Installation Manual [Gas pipe sizing tables] • These tables are for reference only. Consult gas pipe manufacturer for actual pipe capacities. • It is an example of Copper Pipe (AS 1432 TypeB) and Natural Gas. • Values in Table are in MJ of Gas per Hour. 1.
- Page 18 Installation Manual 4. Maximum Natural Gas Delivery Capacity (For supply pressure around 5-10 kPa) - COPPER PIPE (AS 1432 TYPE B) [MJ/h] 1.5 kPa Pressure Drop Pipe Length (including fittings) : metres Size – – – – – – – –...
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Page 19: Connecting The Water Supply
Installation Manual 7. Connecting the Water Supply • Installation and service must be performed by a • Use approved piping materials. qualified plumber. NOTE • Avoid using joints as much as • Observe all applicable codes. possible to keep the piping simple. - Page 20 Installation Manual Hot water supply 7.2 Freeze Prevention WARNING Perform the following insulation measures for prevention of freezing. For any sanitary fixture used for personal • Take appropriate heat insulation measures (e.g. hygiene, the delivered hot water temperature wrapping with heat insulation materials, using shall not exceed 50˚C for Australia and 55˚C for heat tape, electric heaters, solenoids, or pipe New Zealand.
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Page 21: Connecting Electricity
Installation Manual 8. Connecting Electricity NOTE • Do not let the power cord Water Heater contact the gas piping. • Do not disconnect the electrical power when not in use. When WARNING the power is off, the freeze prevention in the Water Heater will not operate, resulting in Electrical Shock Hazard possible freezing damage. -
Page 22: Remote Controller
Installation Manual 9. Remote Controller Remote controller to install: Main Bath Room Controller Controller Operation ECM1D ECB1D ECB2D Works Remote Won't work Controller Won't work Cord Clamp Terminals Works (26ENG series) Works (× 2) Remote Controller Remote Controller Cord Won't work (×... - Page 23 3. Change the temperature with MODE button and • If you want use it less than 42°C, UP/DOWN button on the status display. call DUX on 1300 365 115 (in Australia) or 0800 729 389 (in New 1) Press and hold MODE button for 2 seconds, Zealand).
- Page 24 Installation Manual (°C) Main Maximum Bath Room Controller MODE Without Controller 26ENG series Temperature button Controller Setting ECM1D ECB1D ECB2D Factory 37-48, 50 37-48, 50 Setting 50°C 26ENG5 N/L model ⁞ ⁞ ⁞ ⁞ 37-48 37-48 Factory 37-48, 50, 55 37-48, 50 Setting ⁞...
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Page 25: Trial Operation
Installation Manual 10. Trial Operation The installer should test operate the Water Heater, 1) Close the water supply valve. explain to the customer how to use the Water Heater, and give the owner this manual before Sealing leaving the installation. Trial Operation DANGER Inlet water filter... - Page 26 Installation Manual 3. Turn the gas control manual valve clockwise to (26ENG series only) the off position. If you see other indications of Status Display, scan the following two- dimensional barcode to see why it is displayed. Handling after trial operation If the Water Heater will not be used immediately, close all gas and water valves, and drain all of the water out of the Water Heater and the plumbing...
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Page 27: Maintenance
Water Heater periodically . • Also check the items of maintenance described in Where uncertainty exists concerning water quality, the Owner’s Guide or consult Dux Hot Water for intending appliance users should seek a water recommended service checks.
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