Dux 135ZN, 170ZN, 135ZL, 170ZL, 135SN Owner's Manual
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Owner’s Manual
Models: 135ZN / 135ZL
170ZN / 170ZL
4 Star Gas Hot Water Heater
Specications and materials may change without notice.
Effective for all Prodigy 4 water heaters manufactured and sold after 1st December 2012.
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
H3071 3071 Rev. I
Owner’s Manual – Prodigy 4
H3071 3071 Rev. I
Welcome To Dux Hot Water 1
Installation Details 2
Plumbing Connections 3
Specications 6
Gas Connections 7
Commissioning Adjustments 10
Owner’s Information 12
System Maintenance 14
Troubleshooting 15
Warranty 17
Other Information 20
Contents
© Dux Manufacturing Limited 2012. All rights reserved.
Owner’s Manual – Prodigy 4
1
H3071 3071 Rev. I
Welcome To Dux Hot Water
Your decision to purchase a Dux Hot
Water system will reward you for many
years to come.
Since 1915, the Dux range has seen
continuous research and development,
resulting in many breakthroughs in the
efciency, reliability and longevity of hot
water systems.
Dux water heaters are manufactured
in Australia in a state-of-the-art facility,
using a Quality Endorsed Company
production system.
This is your assurance that you have
purchased the highest quality water
heater available, one that will provide
continuous hot water for all your needs
– safely, economically, and for many
years to come.
To be upfront about it, we want Dux to
be your brand of choice. So you can
depend on us to provide more than just
a hot water system.
You can rely on Dux products and
choose them with condence. We’ll
make sure you have the information, the
quality and the innovation you’re looking
for, including the latest energy-saving
alternatives. If you should ever have a
problem – and we’ll bet you won’t –
you’ll nd that we’re easy to get hold of,
friendly to talk to and quick to act. Our
service is all about providing anything
you need as soon as you need it.
Go with Dux and you’ll have a
dependable, economical, efcient hot
water system designed to perform well,
year after year. And that’s a promise.
Owner’s Manual – Prodigy 4
2
H3071 3071 Rev. I
Installation Details
Outdoor Tank Installation
The water heater must be installed
outdoors, with the minimum clearances
as shown in the gure below.
We recommend a plinth be installed
under the water heater where the
water heater is subjected to wet
conditions.
Minimum clearance around the windows
and doors must be maintained – refer to
AS 5601.
Location
The water heater should be located as
close as possible to the most frequently
used hot water outlet. Ensure that the
data label is clearly visible and that there
is adequate access for servicing the unit.
Note: All models are equipped with a
sacricial anode, accessible through the
top cover. Allow 50% of the height of
the water heater for clearance above to
replace the anode.
A properly drained overow tray must
be used where property damage could
occur from water spillage. (See AS/
NZS3500.4 for further details). Warranty
does not cover consequential damage
due to heater leakage.
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.
A = 500mm B=300mm min
For further details, refer to
AS 5601 – Gas Installation Code
Owner’s Manual – Prodigy 4
3
H3071 3071 Rev. I
Plumbing Connections
Installation Requirements
This water heater must be installed
by a licensed tradesperson, and in
accordance with:
• AS/NZS3500.4 “National Plumbing
and Drainage Code Hot Water
Supply Systems – Acceptable
Solutions”.
• AS5601/AG601 “Gas Installations”.
• Local authority regulations.
• Outside Australia and New Zealand,
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 certicate, showing
that the work complies with all
the relevant Standards and only a
licensed person will have insurance
protecting their workmanship for 6
years.
Water Supply Pressure
This water heater is designed for direct
connection to water supply pressures of
no greater than:
All Litre Models – 1120kPa
Where the mains pressure can exceed
or uctuate beyond the pressure
shown above a pressure limiting device
(complying with AS1357) 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 during
periods of lower demand water pressure
may increase.
Pool Heating
This water heater must not be used for
pool heating.
Plumbing Connections
Owner’s Manual – Prodigy 4
4
H3071 3071 Rev. I
Plumbing Connections
Pressure & Temperature Relief
Valve
The Pressure & Temperature Relief Valve
is supplied loose with the water heater.
The valve rating is:
All Models – 1400kPa
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).
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 a problem with the water
heater and in some cases the tank may
explode.
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 5 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
5 for details.
Owner’s Manual – Prodigy 4
5
H3071 3071 Rev. I
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. Please check
local regulations regarding the use of
hot water supply pipework that are not
made of copper.
Insulation of Pipes
All hot water pipes must be insulated
with UV stabilized insulation.
Note: a combined isolating valve/non-return valve/line strainer may be used.
Expansion valve only required where local regulations demand.
Union
Connection
Non-return
Valve
Line
Strainer
Cold Water
Inlet
Drain
Pressure
Relief Valve
Isolating Valve
(Spindle Vertical)
Inlet Connections
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/NZS3500.4
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.
Owner’s Manual – Prodigy 4
6
H3071 3071 Rev. I
Specifications
System Components
Component Description
1 PTR Valve
2 Hot Water Outlet To House
3 Cold Water Inlet
Tank Specifications
Model Numbers 135ZN / 135ZL 170ZN / 170ZL
Capacity (L) 135 170
Net Weight Empty (kg) 72 86
Relief Valve Pressure (kPA) 1400 1400
Gas Consumption 135ZN: 23.5 MJ/h
135ZL: 22.5 MJ/h
170ZN: 27 MJ/h
170ZL: 26 MJ/h
* Temperature rise at 45°C and inlet temperature of 15°C using natural gas
Dimensions (mm)
A – Height 1601 1896
B – Hot Water Outlet 1327 1620
C – Cold Water Inlet 221 221
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