Dux 26ECB5N Installation Manual
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Dux 26ECB5N Installation Manual

Condensing/non condensing
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(e.g. 26ECB5N)
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 all Local Building,
Water and Gas fitting regulations (AS/NZS 3500.4, AS/NZS 5601, AS/NZS 3000).
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.
SBB816V
Rev. 05/19
Installation Manual
AU Service Department : 1300 365 115
NZ Service Department : 0800 729 389
Condensing Models
26ECB5N
26ECB5L
26ECB6N
26ECB6L
Non Condensing Models
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.
21ECB5N
21ECB5L
21ECB6N
21ECB6L
26ENA5N
26ENA5L
26ENA6N
26ENA6L
32END5N
32END5L
32END6N
32END6L

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Summary of Contents for Dux 26ECB5N

  • Page 1 Water and Gas fitting regulations (AS/NZS 3500.4, AS/NZS 5601, AS/NZS 3000). 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.
  • 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.

  • 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 the Condensate Drain Connecting Electricity Remote Controller Trial Operation Plumbing Applications Installation of the Quick Connect Multi-System Maintenance...

  • Page 4: Before Installation

    Installation Manual 1. Before Installation WARNING CAUTION Check the Gas Do Not Use Appliance for Purposes Other Than Those Specified • Check that the data label (left side of casing). • Check that the gas supply pipe is sized for Do not use for other than increasing the 32END5(6)N: 250 MJ/hr temperature of the water supply, as unexpected...

  • Page 5: About The Water Heater

    Installation Manual 2. About the Water Heater 2.1 Included Accessories Bathroom Controller Set [RCB1D] The following accessories are included with the Water Heater. Check for any missing items before starting installation. Bathroom Controller RC Cable (× 1) (× 1) [ECM-CABLE-10M] Anchoring Screw (×...
  • Page 6 2.3 Specifications • 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 26ECB5N 26ECB5L 21ECB5N 21ECB5L 21ENB5N 21ENB5L 17ENB5N 17ENB5L...
  • Page 7 145 W Prevention 2.3 mm 2.4 mm Burner Injector Size ULPG 1.6 mm 1.5 mm Accessories Anchoring Screws Performances Item Maximum Performance 50°C model 26ECB5N 26ECB5L 21ECB5N 21ECB5L 21ENB5N 21ENB5L 17ENB5N 17ENB5L Model Name 55°C model 26ECB6N 26ECB6L 21ECB6N 21ECB6L...
  • Page 8 Installation Manual 2.4 Dimensions 21/26ECB series (VIEW FROM TOP) DRAIN OUTLET(R1/2) GAS INLET(R3/4) <Unit : mm> HOT WATER OUTLET(R3/4) COLD WATER INLET(R3/4) WIRING THROUGHWAYS 4-φ13 2-6×13 OBLONG HOLE FLUE EXHAUST AIR INLET AIR INLET AIR INLET COLD WATER INLET NEUTRALIZER TANK DRAIN WIRING THROUGHWAYS 2-6.5×16.5 OBLONG HOLE HOT WATER OUTLET...
  • Page 9 Installation Manual 26ENA series (VIEW FROM TOP) <Unit : mm> GAS INLET(R3/4) HOT WATER OUTLET(R3/4) COLD WATER INLET(R3/4) WIRING THROUGHWAYS 4-φ13 2-6×13 OBLONG HOLE FLUE EXHAUST AIR INLET COLD WATER INLET 3-6.5×16.5 OBLONG HOLE 4-φ13 GAS INLET HOT WATER OUTLET HEIGHT OF EACH FITTING FROM BOTTOM OF CASE HOT WATER OUTLET...
  • Page 10 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 11 Installation Manual 32END series (VIEW FROM TOP) < Unit: mm > GAS INLET (3/4”) HOT WATER OUTLET (3/4”) COLD WATER INLET (3/4”) WIRING THROUGHWAY EXHAUST TERMINAL 6 - 6 × 10 OBLONG HOLE 4 - Ó13 AIR INLET 4 - Ó13 STATUS DISPLAY 6 - 6 ×...
  • Page 12 Main flow control valve Circuit board Water inlet thermistor Water flow sensor Water outlet thermistor Anti-frost heater Fan motor Neutralizer tank drain Hot water outlet Gas inlet Pressure relief valve Power code Drain outlet Inlet water filter Cold water inlet (e.g. 26ECB5N)
  • Page 13 Installation Manual 26ENA series Flue exhaust Anti-frost heater High limit switch Heat exchanger Thermal fuse Ignition plug Burner manifold Flame rod Igniter Remote Control Connections Freeze protection thermostat Gas solenoid valve set Main flow control valve Earth leakage breaker Circuit board Anti-front heater Fan motor Gas inlet...
  • Page 14 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...
  • Page 15 Installation Manual 32END series Flue Exhaust Main Flow Control Valve Heat Exchanger Anti-frost Heater High Limit Switch Heat Exchanger Thermistor Thermal Fuse Water Outlet Thermistor Ignition Plug Bypass Flow Control Valve Burner Anti-frost Heater Burner Manifold & Gas Valve Flame Rod Circuit Board Thermistor-Burner Igniter...

  • Page 16: 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 17: 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 18: Installation Of The Water Heater

    Installation Manual 5. Installation of the Water Heater Securing the Water Heater to the wall 3. Determine the positions for the remaining four WARNING screws (two for the top bracket and two for the bottom), and remove the Water Heater. Do not drop or apply unnecessary force to the appliance when installing.

  • Page 19: 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 20 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 21 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 22 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 23 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 – – – – – – – –...

  • Page 24: 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 25 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.

  • Page 26: Connecting The Condensate Drain

    Installation Manual 8. Connecting the Condensate Drain ONLY APPLICABLE TO CONDENSING MODELS. PLEASE FOLLOW LOCAL CODES ABOUT PIPING. DO NOT ADD ANY VALVES Condensing Water Heater 1/2 in. PVC pipe Slope pipe In order to ensure proper operation of this Water downwards at Heater, need to install the condensate drain pipe to not less than...

  • Page 27: Connecting Electricity

    Installation Manual 9. Connecting Electricity NOTE • Do not let the power cord 9.1 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 28 Installation Manual Connecting the Quick Connect Cord to the two 9.2 Quick Connect Cord Water Heaters 1. Check the electrical power is disconnected from NOTE For Quick Connect Multi-System the Water Heater. installation only use the Quick 2. Remove the front cover (4 screws). Connect Cord (part No.

  • Page 29: Remote Controller

    Installation Manual 10. Remote Controller Main Controller Bath Room Controller Operation ECM1D RC-9018C ECB1D ECB2D Works Won't work 17ENB series 21ENB series Won't work 21ECB series Works 26ECB series General application Works 26ENA series (× 2) 32END series Won't work (×...
  • Page 30 Installation Manual Remote Controller Remote Controller Cord Terminals Cord Clamp Wiring Throughways Remote (21/26ECB series and 17/21ENB series) Controller Cord Clamp Terminals (32END series) Remote Controller Terminals Cord Clamp (26ENA series) 10.2 Temperature Setting 21/26ECB series, 17/21ENB series and 26ENA WARNING series [The changing procedure of the maximum...
  • Page 31 Installation Manual 4. Find bridge attached to the inside of the front • 21/26ECB series, 17/21ENB series cover, and insert the bridge into plastic clip between the remote controller terminals. Bridge • 26ENA series Into Bridge A and Bridge B (Inside of the front cover) Bridge (Inside of the front cover)
  • Page 32 Installation Manual 32END series 2) Press MODE button once when DISPLAY lights “F03”. [The changing procedure of the maximum • Switch to SELECT mode. temperature setting] 3) Select the temperature using UP or DOWN button. NOTE This setting (“F03”) must be done 50°C model: 37-48°C (In 1°C intervals), 50°C with all hot water fixtures closed 55°C model: 37-48°C (In 1°C intervals), 50°C,...
  • Page 33 Installation Manual (°C) Quick Connect Multi- Main Controller Bath Room Controller System (2 units) Maximum MODE Without Temperature Recirculation system button Controller ECM1D RC-9018C ECB1D ECB2D Setting (32END6 N/L only) (1 unit only) Factory 37-48, 50 Setting 50°C 32END5 N/L model ⁞...

  • Page 34: Trial Operation

    Installation Manual 11. Trial Operation [If installed with a Quick Connect Multi-System] The installer should test operate the Water Heater, explain to the customer how to use the Water 4. Slowly open a hot water fixture and check that a Heater, and give the owner this manual before Water Heater ignites independently.
  • Page 35 Inlet water filter NOTICE Water Supply Valve Freezing is not covered by the warranty. (e.g. 26ECB5N) 2) Open all hot water fixtures. Lighting Instructions 3) With a bucket ready, remove the inlet water filter. (about 1 L will drain out)

  • Page 36: Plumbing Applications

    Installation Manual 12. Plumbing Application (For 32END6 series only) Recirculation System • With a Recirculation System, the water from the Water Heater to the fixtures can be warmed up in advance. You can get hot water to your fixtures more quickly with less waste of water. •...

  • Page 37: Installation Of The Quick Connect Multi-System

    Installation Manual 13. Installation of the Quick Connect Multi-System (For 32END series only) The Quick Connect Multi-System allows the installation of two Water Heaters together utilizing only the Quick Connect Cord. System Diagram Quick Connect Cord Cord Cord Connect a single Remote Controller Connector Connector Terminal Block...

  • Page 38: Maintenance

    • Check the following to ensure proper operation of the Water Heater periodically . • Also check the items of maintenance described in the Owner’s Guide or consult Dux Hot Water for recommended service checks. [Burner] • Check the burner flame periodically for a proper blue color and consistency.
  • Page 39 Installation Manual 14.2 WATER QUALITY All Dux water heating appliances are constructed from high quality materials and components and all are certified for compliance with relevant parts of Australian and New Zealand gas, electrical and water standards. Whilst Dux water heaters are warranted against defects, the warranty is conditional upon correct installation and use, in accordance with detailed instructions provided with the heater.

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