Rheem 610340 Technical Document

This storage tank must be installed and serviced by a qualified person.
Please leave this guide with the householder.
Owner’s Guide
and
Installation Instructions
Commercial
Storage Tank

PATENTS
This storage tank may be protected by one or more patents or registered designs
in the name of Rheem Australia Pty Ltd.
TRADEMARKS
®Registered trademark of Rheem Australia Pty Ltd.
TM Trademark of Rheem Australia Pty Ltd.
Note: Every care has been taken to ensure the accuracy in preparation of this publication.
No liability can be accepted for any consequences, which may arise as a result of its publication.
WARNING: Plumber –Be Aware
The primary flow and return pipes between the storage tank(s) and the primary water heating source,
including the solar hot and solar cold pipes between the solar storage tank(s) and the solar collectors,
MUST BE of copper. All compression fittings must use brass or copper olives.
The full length of the primary flow and return pipes MUST BE insulated.
The insulation must:
be of a type suitable for the application and capable of withstanding the temperature of the water
generated by the primary water heating source
The specification of the chosen insulation material should be checked with the insulation
manufacturer prior to installation as different materials may vary in temperature tolerance.
Closed cell type or equivalent insulation used between the storage tank(s) and solar collectors, if
this storage tank is part of a solar water heater installation, must be able to withstand the
temperature of the water generated by the solar collectors under stagnation conditions. Refer to
the installation instructions provided with the solar controller for full details on the insulation
requirements of the solar hot and solar cold pipes.
be at least 13 mm thick, however thicker insulation may be required to comply with the
requirements of AS/NZS 3500.4
be weatherproof and UV resistant if exposed
be fitted up to and cover the connections on both the storage tank(s) and the primary heating
source.
The insulation will reduce pipe heat losses and also assist in avoiding accidental contact with the pipe
work as high temperature water can flow from the primary heating source and the storage tank(s).
In addition, the insulation on the solar hot and solar cold pipes must also:
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar hot and solar cold pipe work
Note: Failure to observe these requirements also increases the risk of freeze damage.
The insulation is essential to assist in providing freeze protection and will offer protection to a metal
roof against corrosion due to water running off the copper pipes.
Uninsulated pipe work, including concealed in cavities and roof spaces or where it may be in contact
with a metal roof, may lead to freeze damage. The system has NO WARRANTY for freeze damage if
the solar hot and solar cold pipes are not insulated in accordance with the installation instructions.
Plumber: It is important to refer to and read in full the complete
“Warning: Plumber – Be Aware” statement commencing on page 22.

3
CONTENTS
RESPONSIBLE OFFICER - We recommend you read pages 4 - 12.
The other pages are intended for the installer but may be of interest.
About Your Storage Tank ........................................................................................................... 4
Maintenance Requirements........................................................................................................ 7
Water Supplies............................................................................................................................. 9
Save A Service Call ................................................................................................................... 12
Installation.................................................................................................................................. 13
Connections –Plumbing .......................................................................................................... 20
Connections –Electrical........................................................................................................... 23
Multiple Installations................................................................................................................. 24
Commissioning.......................................................................................................................... 32
Draining The Storage Tank....................................................................................................... 33
Warranty..................................................................................................................................... 35

4
ABOUT YOUR STORAGE TANK
STORAGE TANK APPLICATION
This storage tank is designed for the purpose of storing heated potable water. Its use in an application other
than this may shorten its life.
MODEL TYPE
The Rheem®Commercial hot water storage tank you have chosen can be installed indoor or outdoor and is
either a 610 340 or 610 430 model.
Water is stored in a vitreous enamel lined steel cylinder and heated by an external primary heating source.
The temperature is controlled by the thermostat(s) on the primary heating source. Automatic safety controls
must be fitted to the primary heating source to provide safe and efficient operation.
MAINS PRESSURE
The storage tank is designed to operate at mains pressure by connecting directly to the mains water supply.
If the mains supply pressure in your area exceeds that shown on page 14, a pressure limiting valve must be
fitted. The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
HOW HOT SHOULD THE WATER BE?
The storage tank is designed for a maximum recommended water
temperature of 82°C. Refer to the installation instructions supplied
with the primary heating source plant for further information on water
temperatures.
If this storage tank is installed as part of a solar water heater, to
maximise solar contribution it is recommended the thermostats of
the in-series booster water heaters are set at 60°C if a dead leg
system is installed or 65°C if a circulated flow and return system is
installed, unless sanitising temperatures are required.
Note: AS 3498 requires that a water heater provides the means to
inhibit the growth of Legionella bacteria in potable water.
If this storage tank is installed as part of a solar water heater to an
in-series storage water heater, then this requirement of AS 3498 can
be satisfied provided the storage water heater is energised and the
thermostat setting is 60°C or higher.
If this storage tank is installed as part of a solar water heater to an in-series continuous flow gas booster, then
this requirement of AS 3498 can be satisfied provided the booster is energised, its preset outlet temperature
setting is 70°C or higher and a remote temperature controller is not used.
HOTTER WATER INCREASES THE RISK OF SCALD INJURY.
This storage tank can deliver water at temperatures which can cause scalding. Check the water temperature
before use, such as when entering a shower or filling a bath or basin, to ensure it is suitable for the
application and will not cause scald injury.
We recommend and it may also be required by regulations that an approved temperature limiting device be
fitted into the hot water pipe work to the bathing and public areas when this storage tank is installed. This will
keep the water temperature below 50°C or the maximum permitted by AS/NZS 3500.4 to these areas. The
risk of scald injury will be reduced and still allow hotter water to the kitchen, laundry and other areas requiring
sanitising temperatures.
TEMPERATURE ADJUSTMENT
We advise the thermostats of the primary heating plant are adjusted to the lowest temperature setting that
meets your needs, especially if there are young children or elderly people in the premises, but they should not
be set to less than 60°C. Refer to “Hotter Water Increases the Risk of Scald Injury” on page 4.
maximum recommended
thermostat setting (82°C) of
primary heating source
minimum recommended
thermostat setting of primary
heating source
maximum recommended
supply temperature to
bathrooms, ensuites and
public areas

ABOUT YOUR STORAGE TANK
5
WARNING
This storage tank is only intended to be operated by persons who have the experience or the knowledge and
the capabilities to do so. This storage tank is not intended to be operated by persons with reduced physical,
sensory or mental capabilities i.e. the infirm, or by children. Children should be supervised to ensure they do
not interfere with the storage tank.
SAFETY
This storage tank is supplied with a combination temperature pressure relief valve. This valve has a rating of
46 kW. If the primary heating source has an output exceeding this valve, additional relief valves are required.
The valve(s) must not be tampered with or removed. The storage tank and its primary heating source must
not be operated unless each of these devices is fitted and is in working order.
If a remote thermostat (Tankstat) is fitted to the storage tank and the electrical conduit is damaged, it must be
replaced by a qualified person in order to avoid a hazard. Phone Rheem Service or their nearest Accredited
Service Agent to arrange for an inspection.
Warning: For continued safety of this water heating system it must be installed, operated and maintained
in accordance with the Owner’s Guide and Installation Instructions.
The Rheem warranty may not cover faults if relief valves or other safety devices are tampered with or
if the installation is not in accordance with these instructions.
PRECAUTIONS
Where damage to property can occur in the event of the storage tank leaking, the storage tank must be
installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4
and all local codes and regulatory authority requirements.
The storage tank must be maintained in accordance with the Owner’s Guide and Installation Instructions.
Refer to “Maintenance Requirements” on page 7 and to “Anode Inspection and Replacement” on page 10.
If this storage tank is to be used where an uninterrupted hot water supply is necessary for your application or
business you should ensure that you have back-up redundancy within the hot water system design. This
should ensure the continuity of hot water supply in the event that this storage tank were to become inoperable
for any reason. We recommend you seek advice from your plumber or specifier about your needs and
building back-up redundancy into your hot water supply system.
TO TURN OFF THE STORAGE TANK
If it is necessary to turn off the storage tank:
Turn off the primary water heating plant and switch off the electrical supply at the isolating switch to the
circulating pump(s).
Close the cold water isolation valve on the cold water line to the storage tank(s) to shut down the entire
system, or;
Close the isolation valves on the cold, flow / return and hot water branches to shut down an individual
storage tank in a bank.
TO TURN ON THE STORAGE TANK
Open the isolation valves fully on the cold, flow / return and hot water branches to the storage tank(s)
installed in a bank.
Open the cold water isolation valve on the cold water line to the storage tank(s). Air will be forced out of
the taps.
Switch on the electrical supply at the isolating switch to the circulating pump(s) and turn on the primary
water heating plant.

ABOUT YOUR STORAGE TANK
6
HOW DO I KNOW IF THE STORAGE TANK IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 13 to 19 and 24 to 29. The storage tank must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standard AS/NZS 3500.4 and all local codes and regulatory authority requirements.
In New Zealand the installation must also conform to the New Zealand Building Code.
VICTORIAN CUSTOMERS
Notice to Victorian Customers from the Victorian Plumbing Industry Commission. This storage tank must be
installed by a licensed person as required by the Victorian Building Act 1993.
Only a licensed person will give you a Compliance Certificate, 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 storage tank and ask for your Compliance Certificate.
DOES THE WATER CHEMISTRY AFFECT THE STORAGE TANK?
The storage tank is suitable for most public water supplies, however some water chemistries may have
detrimental effects on the storage tank, its components and fittings. Refer to “Water Supplies” on page 9.
If you are in a known harsh water area or you are not sure of your water chemistry, have your water checked
against the conditions described on pages 9 to 11.
HOW LONG WILL THE STORAGE TANK LAST?
The storage tank is supported by a manufacturer’s warranty (refer to page 35). There are a number of factors
that will affect the length of service the storage tank will provide. These include but are not limited to the water
chemistry, the water pressure, the water temperature (inlet and outlet) and the water usage pattern. Refer to
“Precautions” on page 5.

7
MAINTENANCE REQUIREMENTS
MINOR MAINTENANCE EVERY SIX MONTHS
It is recommended minor maintenance be performed every six (6) months. Minor maintenance can be
performed by a responsible officer.
The minor maintenance includes:
Operate the easing lever on the temperature pressure relief valve. It is very important you raise and
lower the lever gently. Refer to “Temperature Pressure Relief Valve” on page 8.
Warning: Exercise care to avoid any splashing of water, as water discharged from the drain line will
be hot. Stand clear of the drain line’s point of discharge when operating the valve’s lever.
Operate the easing lever on the expansion control valve (if fitted). It is very important you raise and lower
the lever gently. Refer to “Expansion Control Valve” on page 8.
Check the drain line from the safe tray (if one is installed) is not blocked.
MAJOR SERVICE EVERY FIVE YEARS
It is recommended a major service be conducted on the water heater every five (5) years.
Warning: Servicing of the storage tank must only be carried out by qualified personnel. Phone Rheem
Service or their nearest Accredited Service Agent.
Note: The major service and routine replacement of any components, such as the anode and relief valve(s),
are not included in the Rheem warranty. A charge will be made for this work. Only genuine replacement parts
should be used on this storage tank.
The major service includes the following actions:
Replace the temperature pressure relief valve.
Inspect and flush the expansion control valve (if fitted). If required, replace the valve.
Inspect and if required, replace the anode.
If the anode is not replaced, it should be replaced within three years of this service (refer to “Anode
Inspection and Replacement” on page 10).
Drain and flush the storage tank if required.
In commercial applications where large volumes of hot water are used, sediment may build up on the
bottom of the cylinder. In extreme cases, particularly in areas of high water sediment, draining and
flushing out may be necessary.
Visually check the unit for any potential problems.
Inspect all connections.
Check the drain line from the safe tray (if one is installed) is not blocked.
Note: The storage tank may need to be drained during this service. After the completion of the service, the
water heater will take some time to reheat the water. Depending upon the heating source, hot water may not
be available for a while.

MAINTENANCE REQUIREMENTS
8
TEMPERATURE PRESSURE RELIEF VALVE
This valve is near the top of the storage tank and is essential for its
safe operation. It is possible for the valve to release a little water
through the drain line during each heating period. This occurs as the
water is heated and expands by approximately 1/50 of its volume.
Continuous leakage of water from the valve and its drain line may
indicate a problem with the water heater (refer to “Temperature
Pressure Relief Valve Running” on page 12).
Warning: Never block the outlet of this valve or its drain line for
any reason.
Operate the easing lever on the temperature pressure relief valve
once every six months. Refer to “Minor Maintenance Every Six
Months”on page 7. It is very important the lever is raised and
lowered gently.
Warning: Failure to do this may result in the storage tank
cylinder failing.
Warning: Exercise care to avoid any splashing of water, as water
discharged from the drain line will be hot. Stand clear of the drain
line’s point of discharge when operating the valve’s lever.
If water does not flow freely from the drain line when the lever is
lifted, then the storage tank must be checked. Phone Rheem
Service or their nearest Accredited Service Agent.
The temperature pressure relief valve should be replaced at
intervals not exceeding five (5) years, or more frequently in areas
where there is a high incidence of water deposits (refer to “Water
Supplies” on page 9).
EXPANSION CONTROL VALVE
In many areas, including South Australia, Western Australia and scaling water areas, it is mandatory an
expansion control valve is fitted to the cold water line to the water heater. The expansion control valve may
discharge a small quantity of water from its drain line during the heating period instead of the temperature
pressure relief valve on the water heater.
Operate the easing lever on the expansion control valve once every six months. Refer to “Minor Maintenance
Every Six Months”on page 7. It is very important the lever is raised and lowered gently. If water does not
flow freely from the drain line when the lever is lifted, then the water heater should be checked by Rheem
Service or their nearest Accredited Service Agent. The expansion control valve should be checked for
performance or replaced at intervals not exceeding five (5) years, or more frequently in areas where there is
a high incidence of water deposits.
storage
tank
drain
line
lift until water
flows from the
drain line –
lower gently

9
WATER SUPPLIES
This storage tank must be installed in accordance with this advice to be covered by the Rheem
warranty.
This storage tank is manufactured to suit the water conditions of most public reticulated water supplies.
However, there are some known water chemistries which can have detrimental effects on the storage tank
and its operation and / or life expectancy. If you are unsure of your water chemistry, you may be able to
obtain information from your local water supply authority. This storage tank should only be connected to a
water supply which complies with these guidelines for the Rheem warranty to apply.
CHANGE OF WATER SUPPLY
The changing or alternating from one water supply to another can have a detrimental effect on the operation
and / or life expectation of a storage tank cylinder and a temperature pressure relief valve.
Where there is a changeover from one water supply to another, e.g. a rainwater tank supply, bore water
supply, desalinated water supply, public reticulated water supply or water brought in from another supply,
then water chemistry information should be sought from the supplier or it should be tested to ensure the
water supply meets the requirements given in these guidelines for the Rheem warranty to apply.
ANODE
The vitreous enamel lined cylinder of the storage tank is only covered by the Rheem warranty when the total
dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode
is used. If an incorrect colour coded anode is used in the storage tank, any resultant faults will not be covered
by the Rheem warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the
storage tank cylinder.
The correct colour coded anode must be selected and fitted to the storage tank in accordance with the
following advice and the Anode Selection chart on page 9 for the Rheem warranty to apply to the storage tank
cylinder.
Total Dissolved Solids
Anode colour code
0 –40 mg/L
Green
40 –150 mg/L
Green or Black
150 –400 mg/L
Black
400 –600 mg/L
Black or Blue
600 –2500 mg/L
Blue
2500 mg/L +
Blue (no cylinder warranty)
The changing of an anode must be carried out by a qualified person.
Note: Some water analysis reports may state the conductivity of the water rather than the level of total
dissolved solids. Conductivity, measured in microsiemens per centimetre (µS / cm), is directly proportional to
the TDS content of the water. TDS, in mg / L, is approximately 70% of the conductivity in µS / cm.
(3570)
Green
150
2500
600
400
TOTAL DISSOLVED SOLIDS (TDS) mg/L
(CONDUCTIVITY - μS/cm)
(215)
(570)
(860)
Black
40
(60)
Blue
Blue
ANODE SELECTION
Above 2500 mg/L,
no warranty applies
to a vitreous-
enamel-lined water
heater cylinder
Warranty applies to a vitreous-enamel-lined
water heater cylinder if the correct coloured
anode is used for the TDS of the water

WATER SUPPLIES
10
ANODE INSPECTION AND REPLACEMENT
The anode installed in your storage tank will slowly dissipate whilst protecting the cylinder. The life of the
cylinder may be extended by replacing the anode.
For water supplies which are either softened or desalinated, or where the water supply may alternate
between a water tank and a reticulated public supply or another supply, or where there is a variable supply
(e.g. from a bore or public reticulated supply from various water sources), the anode must be inspected (and
replaced if there is any sign of depletion) within 5 years of its installation.
For all water supplies, if the anode is not replaced during a major service (refer to “Major Service Every Five
Years” on page 7) then the maximum time after installation when the anode should be replaced for this
storage tank is 8 years.
CAUTION
If the water supply has a TDS greater than 150 mg/L and a green anode has not been changed to a black
anode, or if the TDS is greater than 600 mg/L and the anode has not been changed to a blue anode, there is
the possibility the anode may become overactive and hydrogen gas could accumulate in the top of the
storage tank during long periods of no use. In areas where this is likely to occur, the installer should instruct
the householder on how to dissipate the gas safely.
If, under these conditions, the storage tank has not been used for two or more weeks the following procedure
should be carried out before using any electrical appliances (automatic washing machines and dishwashers)
which are connected to the hot water supply.
The hydrogen, which is highly flammable, should be vented safely by opening a hot tap and allowing the
water to flow. There should be no smoking or naked flame near the tap whilst it is turned on. Any hydrogen
gas will be dissipated. This is indicated by an unusual spurting of the water from the tap. Once the water runs
freely, any hydrogen in the system will have been released.
SATURATION INDEX
The saturation index (SI) is used as a measure of the water’s corrosive or scaling properties.
In a corrosive water supply, the water can attack copper parts and cause them to fail.
In a scaling water supply calcium carbonate is deposited out of the water onto any hot metallic surface.
Where the saturation index exceeds +0.40, the water is very scaling. An expansion control valve must be
fitted on the cold water line after the non-return valve to protect and for the Rheem warranty to apply to the
temperature pressure relief valve and storage tank cylinder. Water which is scaling may be treated with a
water softening device to reduce the saturation index of the water.
Refer to the Saturation Index chart on page 10. Refer to the cold water connection detail on page 20 for the
position of the expansion control valve.
corrosive
very corrosive very scaling
scaling
SATURATION INDEX
(calculated @ 80°C water temperature)
-1.0
WITHIN WARRANTY
SPECIFICATION
+0.8
no warranty applies to a:
temperature pressure relief
valve or a water heater
cylinder unless an expansion
control valve is fitted.
0
SATURATION INDEX (SI)
STORAGE TANKS
+0.4