Dux ProFlo series User manual

H0421 0421 Rev. K
Specications and materials may change without notice.
Effective for all Proo electric storage water heaters manufactured and sold after 1st January 2012.
Owner’s Manual
Electric Storage Water Heaters
Standard Models:
80F118G, 80F124G, 80F136G
125S118, 125S136, 160S124, 160S136
250S136, 315S136, 315S236, 315S248
400S136, 400S236
An ‘H’ at the end of the model number indicates that the
water heater is tted with a hard-water anode.
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.
Installation Details
Owner’s Information
Warranty

Owner’s Manual – Proflo Electric Storage Water Heaters
H0421 0421 Rev. K
Installation Details 1
Plumbing Connections 3
Electrical Connection 5
Specications 6
Operating Instructions 7
Safety Information 8
Service Information 9
Troubleshooting 10
Warranty 12
Contents
© Dux Manufacturing Limited 2012. All rights reserved.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Installation Details
Installation Requirements
This water heater must be installed
by a licensed tradesperson, and in
accordance with:
• AS/NZS 3500.4 Plumbing and
Drainage – Heated Water Services.
• AS/NZS 3000.
• Local authority regulations.
• Outside Australia, please refer to
local plumbing and building codes
and regulations.
• Notice to Victorian customers from
the Victorian Plumbing Industry
Commission – this water heater
must be installed by a licensed
person as required by the Victorian
Building Act (1993). Only a licensed
person will give you a compliance
certicate, showing that the work
complies with all the relevant
Standards. Only a licensed person
will have insurance protecting their
workmanship for 6 years. Make sure
you use a licensed person to install
this water heater and ask for your
Compliance Certicate.
Water Supply Pressure
This water heater is designed for direct
connection to water supply pressures of:
80, 125 and 160 litre models:
- 1,120 kPa
250, 315 and 400 litre models:
- 800 kPa
Where the mains pressure can exceed
or uctuate beyond the pressure
shown above, a pressure limiting
device (complying with AS 1357)
must be tted in the cold water inlet
supply. This device must be installed
after the isolating valve and set below
the pressure shown above. Note that
during periods of lower demand, water
pressure may increase.
Caution: This water heater delivers
hot water at temperatures exceeding
50°C. Refer to AS/NZS 3500 and
local regulations regarding the need
for additional hot water delivery
temperature control.
Pool Heating
This water heater must not be used for
pool heating.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Installation Details
Location
The water heater should be located as
close as possible to the most frequently
used hot water outlet. Adequate
access must be made for service to the
element(s), thermostat, relief valve and
anode. Ensure that the data plate and
associated warnings are clearly visible.
Note: All models are equipped with a
sacricial anode, accessible through the
top cover. Allow 50% of the height of
the water heater for clearance above to
replace the anode.
The product must be installed on a
at, solid supporting surface.
A properly drained overow tray must
be used where property damage could
occur from water spillage.
(See AS/NZS 3500.4 for further details.)
When installing this water heater in a
roof area as a mains pressure unit, refer to
local regulations.
Note: The warranty does not cover
damage due to leakage of the water
heater.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Plumbing Connections
Pressure & Temperature Relief
Valve
The Pressure & Temperature Relief Valve
is supplied loose with the water heater.
The valve rating is:
80, 125 and 160 litre models:
- 1,400 kPa
250, 315 and 400 litre models:
- 1,000 kPa
The PTR valve must be installed directly
into the top socket marked “RELIEF
VALVE”. The drain line from this valve
must run in a continuously downward
direction in a frost-free ambient position
with the discharge end left open to
atmosphere permanently.
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 AS/NZS 3500.4 for guidance on
these types of installations).
After the cold water has been
connected, open the PTR Valve for
approximately 10 seconds by lifting the
lever on the valve to ensure water is
relieved to waste through the relief drain
pipe. Lower lever gently and check that it
closes correctly.
The PTR Valve must not be tampered with
or removed. The water heater must not
be operated unless this valve is tted and
in working order.
The PTR Valve should be checked for
adequate performance or replaced at
intervals not exceeding 5 years, or less in
areas where local regulations apply.
Important: The PTR Valve and its
drain outlet pipe must not be sealed or
blocked. It is normal for the PTR valve
to leak a small amount of water during
heating cycles.
Warning: A separate drain line must be
run for this relief valve. It is not permitted
to couple drain lines from relief valves
into a single common drain line.
Note: Brass plugs are supplied with
the water heater to plug off the unused
ttings. Ensure that a sealing material is
applied to the plugs to prevent leaking.
Cold Water Connection
An approved isolating valve, non
return valve, line strainer (optional but
recommended), and union must be
tted between the supply main and
either of the RP¾/20 sockets marked
“INLET” at the bottom of the water
heater. All ttings must be approved by
the relevant Authority. See the diagram
on page 4 for details.
Note for S.A. and W.A.: It is a state
requirement that a pressure relief valve
be tted on the cold water supply line
between the non return valve and the
water heater. See the diagram on page
4 for details.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Plumbing Connections
Hot Water Connection
The hot water pipe should be connected
to either of the RP¾/20 sockets marked
"OUTLET" at the top of the unit. For the
most economical operation of the water
heater, it is recommended that all hot
water lines are insulated.
Hot water pipes installed outdoors
should be insulated with UV stabilised
insulation.
Please check local regulations regarding
the use of hot water supply pipework
that is not made of copper.
Temperature Protection
Water heaters can produce very hot
water. To reduce the risk of scald injury,
it is mandatory under the requirements
of Australian Standard AS/NZS 3500.4
that a suitably approved temperature
control device be tted to the hot water
supply to outlets used primarily for
personal hygiene. This valve should be
checked at regular intervals to ensure its
operation and settings remain correct.
Note: a combined isolating valve/non-return valve/line strainer may be used.
Expansion valve only required where local regulations demand although it is
recommended in areas where the water saturation index is above 0.40.
Inlet Connections

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Electrical Connection
This water heater is designed for
single phase 240V A.C. supply
only. The electrical connection must
comply with Local Supply Authority
Regulations and AS/NZS 3000.
Connections are made at the terminal
block inside the water heater, and
a means for disconnection must be
incorporated in accordance with the
wiring rules.
Entry to the connection area is through
the hole beneath the electrical cover,
designed to accept a 20mm conduit.
The electrical cover may be removed by
undoing the two screws on the cover
and sliding the cover downwards to
disengage the top edge. Ensure that the
conduit entry is well sealed to achieve
correct weatherproong.
Note: This water heater is tted with
a thermostat and over-temperature
energy cut-out. Under no circumstances
should the water heater be operated
without both these devices being in the
circuit. Replacement must be carried
out only by a qualied electrician or the
manufacturer.
Danger: The operation of the thermal
cut-out indicates a possibly dangerous
situation. Do NOT reset the thermal
cutout until the water heater has been
serviced by a qualied person.
Caution: Water heater must be lled
with water before turning on the
electricity supply.
Electrician: Press the reset button on
thermostat to ensure over-temperature
cut-out is set.
When supply wiring has been connected,
supply wires must be kept lower than the
terminal block.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Specifications
Tank Size 80L 125L 160L 250L 315L 315L
TWIN
ELEMENT
400L 400L
TWIN
ELEMENT
Storage Capacity (L) 88 130 165 259 321 321 415 415
Hot Water Delivery (L) 80 125 160 250 315 315 400 400
Twin Element Boost – – – – – 40 – 70
Net Weight Empty (kg) 41 51 61 72 93 93 115 115
Element(s) Sizes (kW) 1.8, 2.4,
3.6
1.8, 3.6 2.4, 3.6 3.6 3.6 2 × 3.6
or
2 × 4.8
3.6 2 × 3.6
Relief Valve:
Pressure (kPa) 1400 1400 1400 1000 1000 1000 1000 1000
Temperature (°C) 99
Power Rating (kW) 10kW
Nominal Dimensions
Tank Size 80L 125L 160L 250L 315L 400L
Total Height (A) 925 1090 1345 1445 1765 1705
Total Diameter (B) 490 530 530 620 620 705
Outlet Height (C) 735 865 1120 1210 1530 1445
Inlet Height (D) 160 190 190 195 195 220
Electrical Entry (E) 85 100 100 105 105 130
A
C
D
E
B
Specifications

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Safety
This appliance is not intended for use
by persons (including children) with
reduced physical, sensory or mental
capabilities, or lack of experience and
knowledge, unless they have been given
supervision or instruction concerning
use of the appliance by a person
responsible for their safety.
Children and animals should be
supervised to ensure that they do not
interfere with the appliance.
Filling The Water Heater
Open all hot water taps. Open isolating
valve at the cold water inlet slowly and
allow water heater to ll until water ows
through the system. Close each hot
water tap after the air is expelled from
its line. As noted previously power is not
to be turned on until the water heater is
lled with water.
Water Quality
Your Dux water heater has been
manufactured to suit water conditions of
most Australian metropolitan supplies.
Please note that harsh water supplies
can have a detrimental effect on the
water heater and its life expectancy. If
you are unsure about your water quality
you can obtain information from your
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. In areas where
the TDS exceeds 600mg/L it is possible
that the magnesium alloy anode
(supplied in the heater) may become
over-reactive. To alleviate this,a hard-
water model is recommended or the
magnesium anode should be replaced
with an aluminium alloy anode.
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 tted. If the index is greater
than 0.80, the electrical heating element
in the water heater should be replaced
with a low power density Incoloy heating
element. Please consult our Service
Department for advice if required.
Caution: If the water heater is left in an
operating condition and unused for two
weeks or more, a quantity of hydrogen
(which is highly ammable) may accu-
mulate in the top of the water cylinder.
To dissipate this gas safely it is recom-
mended that a hot tap be turned on for
several minutes at a sink, basin or bath,
but not a dishwasher, clothes washer or
other appliance. During this procedure
there must be no smoking, open ame
or any other electrical appliance operat-
ing nearby. If hydrogen is discharged
through the tap it will probably make an
unusual sound as with air escaping.
Where the water heater is not
installed in accordance with the listed
advice, the water heater will not be
covered by the Terms of Warranty.
Operating Instructions

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Safety Information
Warning
For safe performance, this water heater
is tted with:
1. Combination Thermostat and over-
temperature energy cut-out.
2. Combination Pressure & Temperature
Relief Valve.
These devices must not be tampered with
or removed.
The water heater must not be operated
unless each of these devices is tted
and in working order. Any electrical
covers should be removed only by a
licensed tradesperson.
The electrical power supply switch must
be turned off and the fuse removed or
the circuit breaker isolated at the main
electrical supply switchboard before the
water heater electrical cover is removed.
Open the PTR Valve for approximately 10
seconds by lifting the lever on the valve to
ensure water is relieved to waste through
the relief drain pipe. Lower lever gently
and check that it closes correctly.
The PTR Valve must not be tampered with
or removed. The water heater must not
be operated unless this valve is tted and
in working order.
The PTR Valve should be checked for
adequate performance or replaced at
intervals not exceeding 5 years, or less in
areas where local regulations apply.
Important
The PTR Valve and its drain outlet pipe
must not be sealed or blocked. It is
normal for the PTR valve to leak a small
amount of water during heating cycles.
Danger
Failure to operate the relief valve easing
lever at least once every six (6) months
may result in the water heater exploding.
Continuous leakage of water from the
relief valve may indicate a problem with
the water heater. This may be caused
by excessive water supply pressure, a
faulty relief valve or a faulty thermostat.
Turn off the electricity supply and
contact Dux on 1300 365 115.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Service Information
Six Monthly Service (By Owner)
Operate the Pressure & Temperature
Relief Valve for approximately 10
seconds by operating the easing lever
on the valve to ensure water is relieved
to waste through the relief drain pipe.
Check to ensure the valve closes
correctly.
Five Year Service (By Authorised
Personnel Only)
The ve yearly service should be carried
out by a licensed tradesperson. It is
recommended that this service be
carried out by your local Dux agent.
The service should include the following:
• Replace the Pressure & Temperature
Relief Valve.
• Replace the anode. (in areas of
harsh or adverse water conditions
it is recommended that you carry
out a more frequent check of your
anode’s condition, refer Operating
Instructions “Water Quality”)
• Flush the water heater by doing the
following:
i. Turn off the power.
ii. Turn off the cold water supply to
the water heater at the isolating
valve.
iii. Gently operate the easing lever
on the Pressure & Temperature
Relief Valve to release the
pressure in the water heater.
iv. Disconnect the cold water inlet
union to the heater and attach a
drain hose.
v. Gently operate the Pressure &
Temperature Relief Valve to let
air into the heater and allow
water to escape through the
hose.
vi. To ush the heater, carry out
steps (i) to (iv) above. Disconnect
the hot water inlet union and
attach a water supply hose to
the heater. Turn on the water
supply.
vii. Flush the heater until clear
water appears. Reconnect
all ttings, ll the heater and
restore the electricity supply.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Troubleshooting
What Should I Check Before
Making A Service Call?
If there is not enough hot water, it is
recommended that the following points
be considered before making a service
call. If after checking the following points
the problem has not been identied,
please contact Dux on 1300 365 115.
No Hot Water
• Is the Pressure & Temperature Relief
Valve discharging too much water?
• Do you have the correct size water
heater for your requirements? Sizing
details are available from your Dux
supplier.
• Is one outlet (such as the shower)
using more hot water than you think?
• Carefully review the family's hot
water usage and if necessary check
the shower ow rates with a bucket,
measuring the amount of water
used over that period of time. If it is
not possible to adjust water usage
patterns, an inexpensive ow control
valve can easily be tted to the
shower outlet.
• Consider that often the hot water
usage of showers, washing
machines and dishwashers can
be under estimated. Review these
appliances to determine if your
daily usage is greater than the
storage volume of your water
heater. For example, if you have
a 315 litre storage tank and you
are using 450 litres of water it is
possible that there will be certain
times of the day where there is
insufcient hot water. It is also
advisable to inspect tap washers
etc. for leakage and replace if
necessary.
• 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 have
your plumber rectify any leaking pipe
work.
Water Discharge From Pressure &
Temperature Relief Valve (PTR)
It is not unusual for a small quantity of
water to discharge during the heating of
water in your storage tank. The amount
of discharge will depend on hot water
usage and size of the storage tank.
As a guide, it will discharge 3% of the
storage capacity of water in the heating
period.
Continuous Trickle (PTR)
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.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Troubleshooting
Steady Flow (PTR) – More than
20L per day
This may be caused by excessive water
supply pressure, a faulty PTR Valve or a
faulty thermostat. Turn off the electricity
supply and contact Dux on 1300 365
115.
High Electricity Bills
• Is the Pressure & Temperature
Relief Valve discharging too much
water?
• Is one outlet (such as the shower)
using more hot water than you
think? See “No Hot Water”.
• 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 have
your plumber rectify any leaking
pipework.

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Warranty
Proo electric storage water
heater Warranty:
• 7 Years tank warranty.
• 1 year parts and labour.
The benets provided to you by the
warranty and replacement guarantee
(collectively “Warranty”) are in addition
to the guarantees and other rights and
remedies available to you under the
Australian Consumer Law (“ACL”).
If the Unit fails to conform to this
Warranty during the applicable period,
Dux will replace any failed component
or where necessary, in the absolute
discretion of Dux, replace the Unit free
of charge including reasonable labour
costs incurred in normal business
working hours.
This Warranty only applies to defects
which have arisen solely from faulty
materials or workmanship in the Unit
and does not apply to other defects
which may have arisen as a result
of, without limitation, the following:
accidental damage, abuse, misuse,
maltreatment, abnormal stress or strain,
harsh or adverse water conditions
including excessive water pressure or
temperature, neglect of any kind or
otherwise as a result of any use of the
Unit contrary to the product manual
or other instructions provided by Dux.
Alterations or repair of the Unit other
than by an accredited and licensed
service agent or technician are not
covered. Attachment of accessories
or use of non genuine replacement
parts other than those manufactured
or approved by Dux are not covered by
this Warranty.
This Warranty applies only to the
Unit and does not cover any ancillary
plumbing or electrical parts supplied by
the installer such as pressure limiting
valve, tempering valve, line strainer,
stop cocks, non-return valve, electrical
switches, pumps or fuses, or faulty
installation.
The Unit must be installed by a licensed
plumber in accordance with information
set out in the manual supplied with
the Unit and/or any relevant statutory
requirements. If the Unit is located
in a position that does not comply
with the installation instructions or
relevant 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 Unit accessible for
repair or replacement.
As required by legislation, including
under the ACL, any claims for damage
to furniture, carpets, walls, foundations
or any other consequential loss either
directly or indirectly due to defects
of any kind in a Unit will only be met
by Dux where the damage could be
considered reasonably foreseeable and
installed complying with the installation

Owner’s Manual – Proflo Electric Storage Water Heaters
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H0421 0421 Rev. K
Warranty
instructions and all relevant statutory
requirements.
In addition to this Warranty, certain
legislation (including the ACL) may give
you rights which cannot be excluded,
restricted or modied. This Warranty
must be read subject to such legislation
and nothing in this Warranty has
the effect of excluding, restricting or
modifying those rights.
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 Unit;
• repair of the Unit;
• refunding the cost of the Unit;
• payment of reasonable costs of
having the Unit repaired;
• payment in respect of the reduced
value of the Unit.
Warranty claims can be placed by
completing the following steps:
Contact Dux on 1300 365 115 and
select After Sales & Service option
followed by Hot Water.
• Provide the serial number and
model number of the HWS located
on the white compliance sticker
(top/side of the tank or side of a
Continuous Flow unit).
• Provide full name, address and
contact number.
• Provide proof of installation of the
unit, for warranty to commence
from the Date of Installation of
the unit. If proof of installation or
purchase cannot be provided, then
Date of Manufacture of the unit
will be used to determine warranty
commencement date.
Contact Details:
Dux Manufacturing Limited
Lackey Road
Moss Vale, NSW, 2577
Australia
1300 365 115 (Australia)
0800 729 389 (New Zealand)
Email: [email protected]
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
for 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.

H0421 0421 Rev. K
Electric Storage Water Heaters
Serial Number
For advice, repairs and service, call:
1300 365 115 (Australia)
0800 729 389 (New Zealand)
www.dux.com.au/warranty
Please Register Your Water Heater
Please take a moment to fill
out your details for warranty
registration at:
This will ensure all your current details are
registered with us for prompt warranty
service if required.
To view our privacy policy please visit
http://www.dux.com.au/p/privacy
or use your smartphone to scan this code:
www.dux.com.au/maintenance
Preventative Maintenance
Maintaining your hot water system
will help extend its lifespan and
reduce running costs.
Please register for preventative
maintenance at:
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Installer’s Name: �����������������������������������������������������������������������������������������������������������������������������������������������
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Installer’s Licence No: ������������������������������������������������������������������������������������������������������������������������������������ ��������
Installer’s Signature: �����������������������������������������������������������������������������������������������������������������������������������������������