dux 80T118 Proflo Electric Storage Water Heaters Owner’s Manual

80T118 Proflo Electric Storage Water Heaters

Plumbing Connections

Relief Valve:
The Pressure & Temperature Relief (PTR) Valve is supplied either inside the electrical cover of the water heater or in a bag attached to the water heater. Instructions on how to remove the electrical cover can be found on page 7. Discard the packaging containing the PTR Valve and brass plugs.
The PTR Valve rating depends on the size of the water heater. See Specifications on page 4 for details.
The PTR Valve rating is also shown on the compliance plate. The PTR Valve must be installed directly into the RP½”(DN15) socket marked “RELIEF VALVE” at the top of the water heater. Ensure that a sealing material is applied to the PTR Valve to prevent water leaks.
The drain line from the PTR Valve must be made of copper and run in accordance with the requirements of AS/NZS 3500.4. It must be installed in a continuously downward direction in a frost free environment.
The PTR Valve and its drain line must not be sealed or blocked. Generally a separate drain line must be run for the valve although it may be joined with the drain line from the expansion control valve under certain circumstances.
Tthe PTR valve must be insulated with the PTR insulation supplied with the heater.
Care must be taken when attaching pipe saddles to the water heater. Self- drilling screws no longer than 12 mm are recommended.
It is normal for the valve to leak a small amount of water during heating cycles.
The PTR Valve is not intended to enable connection of the water heater to supplementary energy sources such as solar panels or slow combustion stoves. Refer to AS/NZS 3500.4 for guidance on these types of installations.
Hot Water Connection:
The hot water pipe is to be connected to a RP¾”(DN20) socket marked “OUTLET” at the top of the water heater.
On dual handed models, the unused socket marked “OUTLET” is to be plugged with one of the brass plugs supplied. Ensure that a sealing material is applied to the brass plug to prevent water leaks.
It is recommended that all hot water pipes are insulated. Hot water pipes installed outdoors should be insulated with UV stabilised insulation.
Plastic pipes or fittings shall not be used within 1 metre of the outlet although they may be used downstream of a temperature control valve. Refer to AS/NZS 3500.4 for further details.
Temperature Protection:
Water heaters can produce very hot water. To reduce the risk of scald injury, it is mandatory under the requirements of AS/NZS 3500.4 that an approved temperature control device is fitted to the hot water supply to outlets used primarily for personal hygiene. This device should be checked at regular intervals to ensure its operation and settings remain correct.
Water Supply:
This water heater has been manufactured to suit the water conditions of most Australian and New Zealand metropolitan supplies.
Please note certain water supplies can have a detrimental effect on the water heater and its life expectancy. If you are unsure about the water supply, you can obtain information from the local water supply authority.

The water heater is designed for use in areas where the Total Dissolved Solids (TDS) content of the water supply is less than 2500 mg/L. The Tank Failure Warranty does not apply in areas where the TDS exceeds 2500 mg/L.
In areas where the TDS exceeds 600 mg/L, it is possible the magnesium alloy anode (supplied in standard water heaters) may become over-reactive. To alleviate this, a hard water model is recommended, or the magnesium alloy anode should be replaced with an aluminum alloy anode. Aluminum alloy anodes are available from your local Dux Supplier.
Water can also be very corrosive, the measure of this is the saturation index. If the water saturation index is greater than 0.40, an expansion control valve should be fitted. If the index is greater than 0.80, the electrical heating element should be replaced with a low power density Indology heating element. Please consult Dux After Sales and Service for advice if required.
Cold Water Connection:
The water heater is intended to be permanently connected to the water supply main, and not connected by a hose-set.
An approved isolating valve, non-return valve, line strainer (optional but recommended) and union must be fitted between the water supply main and a RP¾”(DN20) socket marked “INLET” at the bottom of the water heater. See the diagram on page 6 for details.
On dual handed models, the unused socket marked “INLET” is to be plugged with one of the brass plugs supplied. Ensure that a sealing material is applied to the brass plug to prevent water leaks.

All fittings must be approved by the relevant Authority. Plastic pipes or fittings shall not be used between the isolating valve and the inlet.
Water Supply Pressure:
This water heater is designed for direct connection to water supply pressures of up to 1,120 kPa for 80L, 125L and 160L models, and 800 kPa for 135L, 180L, 250L, 300L, 315L and 400L capacities.
Where the mains pressure can exceed or fluctuate beyond this pressure, a pressure reducing valve must be fitted in the cold water inlet supply.
Note for New Zealand, South Australia and Western Australia:
It is a requirement in these locations that an expansion control valve be fitted on the cold water supply line between the non-return valve and the water heater.

Specifications

80L – 400L (Dual Handed Models )

125L Narrow Diameter (Dual Handed Models)

Nominal Dimensions (mm)

Model| 80T1| 125T1| 125X1| 160T1| 250T1| 315T1/

315T2

| 400T1/

400T2

Total Height (A)| 925| 1090| 1300| 1315| 1445| 1765| 1705
 |  |  |  |  |  |  |
Outlet Height (C)| 735| 865| 1115| 1095| 1210| 1530| 1445
 |  |  |  |  |  |  |
Connections| 90°| 90°| V-Fit| 90°| 90°| 90°| 90°

Specifications

3.6

| 1.8, 3.6| 1.8,

3.6

| 2.4,

3.6

| 1.8,

3.6

| 3.6| 2 × 3.6

2 × 4.8

| 3.6| 2 × 3.6
Relief Valve:|  |  |  |  |  |  |  |  |
Pressure (kPa)| 1400| 1400| 1400| 1400| 1000| 1000| 1000| 1000| 1000
Temperature (°C)|  |  |  |  | 99|  |  |  |
Power Rating (kW)|  |  |  |  | 10kW|  |  |  |

Specifications

N135T1 & 180TD1

180ST, N250T1 & N300T1

Filling and Draining

Filling the Water Heater:

The water heater must be filled with water before turning on the electrical supply.

1. Open all hot water taps.
2. Open the isolating valve at the cold water inlet slowly and allow the water heater to fill until water flows through the system.
3. Close each hot water tap after the air is expelled from its line.
4. Open the Pressure & Temperature Relief Valve for approximately 10 seconds by lifting the easing lever on the valve. Confirm water is relieved to waste through the relief valve drain pipe.
5. Lower the lever gently and check it closes correctly.

Draining the Water Heater:

1. Turn off the electricity supply to the water heater.
2. Turn off the cold water supply to the water heater at the isolating valve.
3.  Gently operate the easing lever on the Pressure & Temperature Relief (PTR) Valve to release the pressure in the water heater.
4. Disconnect the cold water inlet union and attach a drain hose to the water heater.
5.  Gently operate the easing lever on the PTR Valve to let air into the water heater and allow water to escape through the hose.

Cold Water Connection Diagram:

Note: a combined isolating valve/non-return valve/line strainer may be used.
The expansion control valve is only required where local regulations demand, although it is recommended in areas where the water saturation index is greater than 0.40.

General:

This water heater is designed for single phase 230 – 240V a.c. supply only. The electrical connection must comply with Local Supply Authority Regulations and AS/NZS 3000.
Connection of the electrical wiring must only be carried out by a licensed tradesperson.
Connections are made at the terminal block under the water heater electrical cover. A means for disconnection must be incorporated in the fixed wiring in accordance with the Wiring Rules.
Removing the Electrical Cover:
Before removing the electrical cover, ensure the electrical power supply is safely isolated.
The electrical cover is removed by undoing
the two screws at the bottom of the cover and sliding the cover downwards to disengage the top edge.
Connections:
The cable entry is a pre-punched hole designed to accept a 20 mm conduit gland. It is located adjacent to the terminal block.
To prevent damage to the wiring, the cable entry must be fitted with a gland prior to feeding the wiring through the hole. Ensure the conduit entry is sealed correctly .Electrical Connection.

SINGLE ELEMENT ELECTRIC

TWIN ELEMENT ELECTRIC

System Maintenance

Regular servicing will help to extend the life of the water heater, and keep it operating safely and efficiently.
Your water heater warranty is not conditional on completing the regular servicing recommended in this manual.
The conditions applying to your water heater warranty are set out on page 10 of this manual.
Six Month Service:
This service may be carried out by the owner.

1.  Stand clear of the Pressure & Temperature Relief (PTR) Valve drain pipe outlet.
2. . Open the PTR Valve for approximately 10 seconds by lifting the easing lever on the valve. Confirm water discharges to waste through the drain pipe.
3.  Lower the easing lever gently and check it closes correctly.
4. Repeat the above process for the expansion control valve (if installed).

Other than this, personally inspecting or servicing any part of the water heater is not recommended.

Five Year Service:
This service should only be carried out by a licensed tradesperson. We recommend your local Dux Service Agent.
In locations where the water has Total Dissolved Solids (TDS) exceeding 600 mg/L, this service is recommended every 3 years.
This service should include the following:

• Replace the PTR Valve.
• Replace the anode.
• Inspect and flush the expansion control valve (if installed).
•  Drain and flush the water heater.
• Inspect the condition of the electrical conduit and the water heater electrical cover. Replace any damaged components.

Replacement parts are available from your local Dux supplier.

Considering a Service Call?

It is recommended that the following points be reviewed before making a service call:
No Hot Water:
Ensure the power supply circuit breaker has not “tripped”. If the water heater is on a timed tariff such as off-peak, ensure this is operating correctly.
High Energy Bills or Insufficient Hot Water:

•  Often the hot water usage of showers, washing machines and dishwashers can be under estimated. Review these appliances to determine if the daily usage is greater than the capability of the water heater.
• If necessary check the shower flow rates with a bucket, measuring the amount of water used over a period of time. If it is not possible to adjust water usage patterns, an inexpensive flow control valve can easily be fitted to the shower outlet.
•  Is the water heater the correct size for the requirements? Sizing details are available from your Dux supplier.
•  Is there a leaking hot water pipe or dripping hot water tap? A small leak can waste a large quantity of hot water. Replace faulty tap washers and arrange for your plumber to rectify any leaking pipe work.
• Is the Pressure & Temperature Relief Valve discharging too much water? See below.

Continuous Trickle of Water from Pressure & Temperature Relief (PTR) Valve:
This is most likely due to a build up of foreign matter. In this case, try gently raising the easing lever on the PTR Valve for a few seconds, then release gently.
This may dislodge a small particle of foreign matter and rectify the fault.
Water Discharge from PTR Valve:
It is not unusual for a small quantity of water to discharge during the heating of water in the storage tank. The amount of discharge will depend on hot water usage and the size of the storage tank.
As a guide, it will discharge about 2% of the volume of the water heated.
Continuous leakage of water from the PTR Valve may indicate a problem with the water heater. Turn off the water heater and contact Dux After Sales and Service.
If after checking the above points, the problem has not been identified, please contact Dux After Sales and Service.

Warranty

Dux Electric Storage Water Heater – Warranty Summary:
Your water heater is specified with a warranty as set out in the table below.
The fault must appear within the defined time period, which commences from the date of installation (or manufacturing date of the unit if proof of the date of installation is not available) in order to be covered.
Dux Proflo Water Heater Warranty

Dux Proflo 80L – 400L

Water Heater Warranty

|

Tank Warranty

|

Parts & Labour

---|---|---
Single Family Dwelling| 10 years| 1 year
All Other Applications| 3 years| 1 year

The benefits provided to you by this warranty are in addition to any other rights and remedies available to you under the Australian Consumer Law.
Parts and Labour Warranty:
Dux Manufacturing Limited (“Dux”) warrants against defects in the water heater arising from faulty materials or workmanship.
During the period (as specified in the table above), Dux will repair or replace any failed component or where necessary, in the absolute discretion of Dux, replace the water heater, free of charge including reasonable labour costs incurred during normal business working hours.
Tank Failure Warranty:
Dux warrants against failure of the storage tank, in accordance with its application (as specified in the table above). Conditions apply.
During the first year of warranty, Dux will provide a replacement water heater free of charge including installation and labour costs.
Installation and other labour costs are the responsibility of the owner if the water heater is outside parts and labour warranty.

Warranty Conditions:
The warranty only applies to the water heater itself and the components supplied with the water heater by Dux. The warranty does
not cover components supplied by others, including the installer.
The tank failure warranty does not apply if the water heater has been connected to a water supply where the Total Dissolved Solids content is greater than 2500 mg/L.
These warranties do not apply to defects that are a result of, without limitation, the following:

• failure to install the water heater in accordance with the installation instructions or statutory requirements;
• faulty plumbing or water supply including excessive pressure.
•  faulty power supply;
• use of the water heater in a manner contrary to this manual;
• alterations or repair of the water heater other than by a suitably qualified tradesperson;
• accidental damage or abuse.

If the water heater is installed in a position that does not comply with the installation instructions or statutory requirements, then this warranty does not cover major dismantling or removal of cupboards, doors, walls or special equipment and/or excessive labour, at the determination of Dux, to make the water heater accessible for repair or replacement.
Where the Dux water heater is located outside the metropolitan area of a capital city and is more than 100km from a Dux office or Dux agent, the Owner will be responsible under the warranty for paying the costs of transporting the water heater and or any component in the water heater to and from an approved Dux agent or Dux office (including any insurance associated with that transport), or paying the travelling time of an approved Dux agent to and from the owners premises.

Warranty

Commencement of Warranty:
The warranty period commences from the date of installation of the water heater. Where proof of the date of installation is not available, the warranty period commences on the date of manufacture of the water heater. This is shown on the compliance plate on the outside of the water heater.
The replacement of the water heater, or a component of it, under this warranty does not change the warranty commencement date. The original commencement date continues to apply.
Exclusion and Limitation of Liability:
In addition to any other provisions set out in this document and to the maximum extent permitted by any applicable law or regulation, Dux will not be liable for any claim:

1. for consequential loss to any property arising directly or indirectly out of or connected to the installation of the water heater. This includes but is not limited to furnishings, carpets, foundations, housing effects and buildings.
2. for any direct or indirect economic or financial loss of any nature.
3. arising out of or connected to a water heater that has been resold or moved from its original installation location.
4. arising out of or connected to any misuse, or other use, installation or maintenance that is not in accordance with the procedures and requirements set out in this document.

To the extent permitted by law the liability of Dux shall be limited to the cost of the repair or replacement of the water heater.
The Australian Consumer Law (“ACL”):

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
If Dux fails to meet a guarantee under the ACL, your remedy for such failure may be limited to any one or more of the following:

• replacement of the water heater;
• repair of the water heater;
• refunding the cost of the water heater;
• payment of the reasonable costs of having the water heater repaired;
• payment in respect of the reduced value of the water heater.

How to Make a Warranty Claim: Warranty claims can be placed by completing the following steps:

• Contact Dux on one of the numbers listed below.
•  Select the “Service” option followed by the “Hot Water” option.
• Provide the serial number and model number of the water heater. This can be found on the compliance plate on the outside of the water heater.
• Provide your full name, address and contact number.
• Provide proof of date of installation for warranty to commence from that date, rather than from the date of manufacture. See Commencement of Warranty on page 11.

Please note, if the defect or fault is not covered by the warranty or guarantee, you will be responsible for the costs incurred by the service agent or technician.
Contact Details:
Dux Manufacturing Limited
Lackey Road, Moss Vale, NSW, 2577 Australia
1300 365 115 (Australia)
0800 729 389 (New Zealand)
Email: duxaftersales@dux.com.au

Electric Storage Water Heaters

For advice, repairs and service, call:
1300 365 115 (Australia)
0800 729 389 (New Zealand)

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www.dux.com.au/warranty

or use your smartphone to scan this code:

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References

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