Radiant 125A136 Manual de usuario
H3156 3156 Rev. F
Specications and materials may change without notice.
Effective for all Radiant electric storage water heaters manufactured and sold after 1st July 2018.
Owner’s Manual
Electric Storage Water Heaters
Models: 125A118
125A136
160A124
160A136
250A136
315A136
For advice, repairs and service, call:
1300 365 115
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 – Radiant Electric Storage Water Heaters
H3156 3156 Rev. F
Installation Requirements 1
Plumbing Connections 2
Specications 4
Filling and Draining 5
Electrical Connection 6
Safety Information 7
System Maintenance 9
Considering a Service Call? 10
Warranty 11
Radiant®is a registered trademark of Dux Manufacturing Limited.
© Dux Manufacturing Limited 2019. All rights reserved.
Contents
Owner’s Manual – Radiant Electric Storage Water Heaters
1
H3156 3156 Rev. F
Installation Requirements
General:
This water heater must be installed
by a licensed tradesperson, and in
accordance with:
• AS/NZS 3500.4 Plumbing and
Drainage – Heated Water Services.
• Clause G12 of the NZ Building
Code (in New Zealand).
• AS/NZS 3000 Electrical Installations
(known as the Australian / New
Zealand Wiring Rules).
• Local authority regulations.
• Outside Australia and New Zealand,
please refer to local plumbing and
building codes and regulations.
Failure to comply with these
requirements may affect the warranty.
Note for Victoria:
This water heater must be installed by
a licensed person as required by the
Victorian Building Act (1993).
Only a licensed person will provide a
compliance certicate, showing that
the work complies with all the relevant
Standards. Only a licensed person
will have insurance protecting their
workmanship.
Pool Heating:
This water heater must
not
be used for
pool heating.
Location:
The water heater should be located as
close as possible to the most frequently
used hot water outlet.
Ensure the compliance plate and
associated warnings are clearly visible.
The water heater must be accessible
without the use of a ladder or scaffold.
Adequate clearance must be available
for service to the element, thermostat,
relief valve and anode. All models are
equipped with a sacricial anode, allow
half of the height of the water heater to
provide access through the top cover.
Electric storage water heaters may be
installed indoors. A properly drained
safe tray must be installed where
property damage could occur from
water spillage. Refer to AS/NZS 3500.4
for further information.
Note - the warranty will not cover
damage due to leakage of the water
heater if a properly drained safe tray has
not been installed.
Refer to local regulations before
installing the water heater in a roof
space.
Water Heater Support:
The water heater must be installed on
a at, solid supporting surface. The
pipework must not be used to support
the water heater.
Where the water heater is subjected
to wet conditions, a plinth should be
installed under the water heater.
Owner’s Manual – Radiant Electric Storage Water Heaters
2H3156 3156 Rev. F
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 6. Discard the
packaging containing the PTR Valve and
brass plugs
The PTR Valve rating depends on the size
of the water heater. See Specications 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.
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
either of the RP¾”(DN20) sockets marked
“OUTLET” at the top of the water heater.
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 ttings 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 tted 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.
Plumbing Connections
Owner’s Manual – Radiant Electric Storage Water Heaters
3
H3156 3156 Rev. F
Plumbing Connections
Water Supply:
This water heater has been manufactured
to suit the water conditions of most
Australian 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 aluminium alloy anode.
Aluminium 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 tted. If the index is greater than 0.80,
the electrical heating element should be
replaced with a low power density Incoloy
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 tted
between the water supply main and either
of the RP¾”(DN20) sockets marked
“INLET” at the bottom of the water heater.
See the diagram on page 5 for details.
All ttings must be approved by the
relevant Authority. Plastic pipes or ttings
shall not be used between the isolating
valve and the inlet.
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.
Water Supply Pressure:
This water heater is designed for direct
connection to water supply pressures of up
to 1,120 kPa for 125L and 160L models, and
up to 800 kPa for 250L and 315L models.
Where the mains pressure can exceed or
uctuate beyond this pressure, a pressure
reducing valve must be tted in the cold
water inlet supply.
Note for South Australia and
Western Australia:
It is a requirement in these locations that
an expansion control valve be tted on
the cold water supply line between the
non-return valve and the water heater.
Owner’s Manual – Radiant Electric Storage Water Heaters
4H3156 3156 Rev. F
Specifications
Specifications
Tank Size 125L 160L 250L 315L
Storage Capacity (L) 130 161 259 321
Hot Water Delivery (L) 125 160 250 315
Net Weight Empty (kg) 51 59 72 93
Element Sizes (kW) 1.8, 3.6 2.4, 3.6 3.6 3.6
Relief Valve:
Pressure (kPa) 1400 1400 1000 1000
Temperature (°C) 99
Power Rating (kW) 10kW
Nominal Dimensions
Tank Size 125L 160L 250L 315L
Total Height (A) 1090 1315 1445 1765
Total Diameter (B) 530 530 620 620
Outlet Height (C) 865 1095 1210 1530
Inlet Height (D) 190 190 195 195
Owner’s Manual – Radiant Electric Storage Water Heaters
5
H3156 3156 Rev. F
Filling and Draining
Filling the Water Heater:
The water heater must be lled 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 ll until water ows
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. Conrm 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.
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.
Cold Water Connection Diagram:
Owner’s Manual – Radiant Electric Storage Water Heaters
6H3156 3156 Rev. F
Electrical Connection
General:
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.
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 xed 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 tted with a gland prior to
feeding the wiring through the hole. Ensure
the conduit entry is sealed correctly.
Connect the active and neutral wires to
the terminal block and the earth wire to
the earth tab (located on the right hand
side). Excess wire is not to be looped
close to the thermostat or tank.
Replacing the Electrical Cover:
1. Press the reset button on the
thermostat to ensure the over-
temperature energy cut-out is set.
2. Check the Pressure & Temperature
Relief Valve, both of the brass plugs,
and their clear plastic packaging
have been removed from inside the
cover.
3. Ensure the terminal block mounting
plate is horizontal.
4. Slide the cover up, ensuring the top
edge engages under the case.
5. Swing the cover down until the
bottom edge contacts the case.
Ensure the terminal block mounting
plate is below the pins located inside
the cover.
6. Ret and tighten both screws in the
cover.
Ensure the water heater is lled
with water before turning on the
electricity supply.
Owner’s Manual – Radiant Electric Storage Water Heaters
7
H3156 3156 Rev. F
General:
This water heater 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 water heater by a person
responsible for their safety.
Children and animals should be
supervised to ensure they do not
interfere with the water heater.
DO NOT store chemicals or ammable
materials, or spray aerosols near this
water heater.
DO NOT modify this water heater.
DO NOT operate the water heater with
any panels or covers removed.
Temperature Protection:
Water heaters can produce very hot
water. To reduce the risk of scald
injury, it is mandatory that an approved
temperature control device is tted 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.
Relief Valve:
The Pressure & Temperature Relief (PTR)
Valve must be installed directly into the
RP½”(DN15) socket marked “RELIEF
VALVE”.
The PTR Valve rating is shown on the
compliance plate. The 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 by
a licensed tradesperson for adequate
performance, or replaced at intervals
not exceeding 5 years, or less in areas
where local regulations apply.
The PTR Valve is to be operated
regularly to remove lime deposits and
to verify it is not blocked. It is normal
for the valve to leak a small amount of
water during heating cycles.
Danger:
Failure to operate the PTR Valve easing
lever at least once every six months may
result in the water heater exploding.
Continuous leakage of water from the
PTR Valve may indicate a problem with
the water heater. This may be caused
by excessive water supply pressure, a
faulty PTR Valve or a faulty thermostat.
Turn off the water heater and contact
Dux After Sales and Service.
Safety Information
Owner’s Manual – Radiant Electric Storage Water Heaters
8H3156 3156 Rev. F
Electrical Safety:
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.
Any electrical covers should be removed
only by a licensed tradesperson, and
only after the electrical supply to the
water heater has been isolated.
In addition to the PTR Valve, electric
storage water heaters are tted with
a combination thermostat and over-
temperature energy cut-out.
This device must not be tampered with
or removed. Replacement of this device
must only be carried out by a licensed
tradesperson or the manufacturer.
The water heater must not be operated
unless this device is tted and in
working order.
Danger:
The operation of the over-temperature
energy cut-out indicates a possibly
dangerous situation. Do NOT reset the
over-temperature energy cut-out until
the water heater has been serviced by a
licensed tradesperson.
Not Using Hot Water?
If the water heater is not used for two
weeks or more, a quantity of hydrogen
(which is highly ammable) may
accumulate inside the water heater tank.
To dissipate this gas safely it is
recommended 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 operating nearby. If
hydrogen is discharged through the tap
it will probably make a sound similar to
air escaping.
Safety Information
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