Rheem 596160 Technical Document

This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
Owner’s Guide
and
Installation Instructions
Solar Premier Loline 596160
Gas Boosted Water Heater
WARNING: Plumber –Be Aware
Use copper pipe ONLY. Plastic pipe MUST NOT be used.
It is a requirement of a solar water heater installation that all pipe work be in
copper and not plastic, due to the effects of high water temperatures.

An electronic copy of these Owner’s Guide and Installation Instructions can be downloaded from rheem.com.au.
Rheem Australia Pty Ltd is the supplier of the Rheem range of electronic continuous flow gas water heaters,
manufactured by Paloma Co., Ltd., a world leader in water heater technology and manufacture.
PATENTS
This water heater may be protected by one or more patents or registered designs in the name of
Rheem Australia Pty Ltd or Paloma Co., Ltd.
TRADE MARKS
®Registered trademark of Rheem Australia Pty Ltd.
™ Trademark of Rheem Australia Pty Ltd.
Note: Every care has been taken to ensure accuracy in preparation of this publication.
No liability can be accepted for any consequences, which may arise as a result of its application.
WARNING: Plumber –Be Aware
•The solar hot and solar cold pipes between the solar storage tank and the solar collectors MUST BE
of copper. All compression fittings must use brass or copper components.
•The full length of the solar hot and solar cold pipes MUST BE insulated.
The insulation must:
▪be of a closed cell type or equivalent, suitable for a solar water heating application and capable of
withstanding the temperature of the closed circuit fluid generated by the solar collectors under
stagnation conditions
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.
▪be at least 13 mm thick
▪be weatherproof and UV resistant if exposed
▪extend through any penetrations in the eaves, ceiling and roof
▪cover valves and fittings in the solar pipe work
▪be fitted up to and cover the connections on both the solar storage tank and the solar collectors.
The insulation will offer protection to a metal roof against corrosion due to water running off the copper
pipes, assist in avoiding accidental contact with the solar pipe work as high temperature closed circuit
fluid can flow from the solar collectors to the solar storage tank, and also reduce pipe heat losses.
•The highest point of the solar hot and solar cold pipes must be where they connect to the solar
collectors. There MUST BE a continuous fall of a minimum 5° (1 in 10 grade) in the pipe work from
the solar collectors to the solar storage tank for efficient and complete drain back of the closed circuit
fluid to occur.
The system has NO WARRANTY for freeze damage if there is not a continuous fall in the solar hot
and solar cold pipes, or they are not insulated in accordance with the installation instructions, or the
closed circuit fluid has been incorrectly mixed.
•The insulated copper pipe work:
▪should be fixed at suitable locations to prevent or reduce the possibility of noise from water
hammer and vibration from occurring
▪is not to be placed or installed in contact with plastic pipe work.
Likewise, plastic pipe work is not to be placed or installed in contact with the insulated copper pipe
work after the solar circuit is installed.
•Plastic pipe MUST NOT be used, as it will not withstand the temperature of the closed circuit fluid
generated by the solar collectors under stagnation conditions. Extremely high closed circuit fluid
temperatures up to 150°C for non-selective surface collectors and greater than 200°C for selective
surface collectors can be generated under these conditions. Plastic pipe cannot withstand these
temperatures and MUST NOT be used. Failure of plastic pipe can lead to the release of high
temperature closed circuit fluid and cause severe water damage and flooding.
•The pressure applied to the solar circuit and solar collectors during a pressure test of a closed circuit
system MUST NOT exceed 200 kPa, otherwise damage may result. Refer to “Pressure Testing” on
page 40.

3
CONTENTS
HOUSEHOLDER
This booklet contains important information about your
new water heater, including terms of the Rheem warranty.
We recommend you read pages 7 to 24,
and the terms of the Rheem warranty on pages 4 to 6.
The other pages are intended for the installer but may be of interest.
Warranty....................................................................................................................................... 4
Safety, Warnings, Installation Notes......................................................................................... 7
About Your Water Heater.......................................................................................................... 11
Maintenance Requirements...................................................................................................... 16
Water Supplies........................................................................................................................... 18
Save A Service Call................................................................................................................... 21
Installation –System................................................................................................................. 25
Installation –Solar Storage Tank............................................................................................. 27
Installation –Solar Collectors.................................................................................................. 35
Connections –Plumbing .......................................................................................................... 41
Connections –Electrical........................................................................................................... 46
Commissioning.......................................................................................................................... 49
Draining The Water Heater ....................................................................................................... 67
Installation Report..................................................................................................................... 69
RHEEM AUSTRALIA PTY LTD, A.B.N. 21 098 823 511, www.rheem.com.au
For Service Telephone 131 031 AUSTRALIA
Warning: Upon completion of the installation and commissioning of the water heater, leave
this guide with the householder or responsible officer. DO NOT leave this guide inside of the
cover of the water heater, as it may interfere with the safe operation of the water heater or ignite
when the water heater is turned on.

4
RHEEM SOLAR WATER HEATER WARRANTY
–AUSTRALIA ONLY –
SOLAR WATER HEATER MODEL 596160
1. THE RHEEM WARRANTY –GENERAL
1.1 This warranty is given by Rheem Australia Pty Limited ABN 21 098 823 511 of 1 Alan Street, Rydalmere New
South Wales, the manufacturer of Rheem mains pressure water heaters and the supplier of Rheem
continuous flow gas water heaters, manufactured by Paloma Co., Ltd., a world leader in water heater
technology and manufacture.
1.2 Rheem offer a trained and qualified national service network who will repair or replace components at the
address of the water heater subject to the terms of the Rheem warranty. Rheem Service, in addition can
provide preventative maintenance and advice on the operation of your water heater. The Rheem Service
contact number is 131031, with Contact Centre personnel available 24 hours, 7 days a week to take your call
and if necessary to arrange a service call for during normal working hours Monday to Friday (hours subject
to change).
1.3 For details about this warranty, you can contact us on 131031 or by email at [email protected]
(not for service bookings).
1.4 The terms of this warranty and what is covered by it are set out in sections 2 and 3 and apply to water heaters
manufactured after 1st November 2014.
1.5 If a subsequent version of this warranty is published, the terms of that warranty and what is covered by it will
apply to water heaters manufactured after the date specified in the subsequent version.
2. TERMS OF THE RHEEM WARRANTY AND EXCLUSIONS TO IT
2.1 The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion.
2.2 If you require a call out and we find that the fault is not covered by the Rheem warranty, you are responsible
for our standard call out charge. If you wish to have the relevant component repaired or replaced by Rheem,
that service will be at your cost.
2.3 Where a failed component or cylinder is replaced under this warranty, the balance of the original warranty
period will remain effective. The replacement does not carry a new Rheem warranty.
2.4 Where the water heater is installed outside the boundaries of a metropolitan area as defined by Rheem or
further than 25 km from either a regional Rheem branch office or an Accredited Rheem Service Agent's office,
the cost of transport, insurance and travelling between the nearest branch office or Rheem Accredited Service
Agent’s office and the installed site shall be the owner’s responsibility.
2.5 Where the water heater is installed in a position that does not allow safe or ready access, the cost of that
access, including the cost of additional materials handling and/or safety equipment, shall be the owner’s
responsibility. In other words, the cost of dismantling or removing cupboards, doors or walls and the cost of
any special equipment to bring the water heater to floor or ground level or to a serviceable position is not
covered by this warranty.
2.6 This warranty only applies to the original and genuine Rheem water heater in its original installed location and
any genuine Rheem replacement parts.
2.7 The Rheem warranty does not cover faults that are a result of:
a) Accidental damage to the water heater or any component (for example: (i) Acts of God such as floods,
storms, fires, lightning strikes and the like; and (ii) third party acts or omissions).
b) Misuse or abnormal use of the water heater.
c) Installation not in accordance with the Owner’s Guide and Installation Instructions or with relevant
statutory and local requirements in the State or Territory in which the water heater is installed.
d) Connection at any time to a water supply that does not comply with the water supply guidelines as
outlined in the Owner’s Guide and Installation Instructions.
e) Repairs, attempts to repair or modifications to the water heater by a person other than Rheem Service
or a Rheem Accredited Service Agent.
f) Faulty plumbing or faulty gas or power supply.
g) Failure to maintain the water heater in accordance with the Owner's Guide and Installation Instructions.

RHEEM SOLAR WATER HEATER WARRANTY
–AUSTRALIA ONLY –
5
SOLAR WATER HEATER MODEL 596160
h) Transport damage.
i) Fair wear and tear from adverse conditions (for example, corrosion).
j) Cosmetic defects.
k) Breakage of collector glass for any reason including hail damage (we suggest that the collector glass be
covered by your home insurance policy).
l) Ice formation in the closed circuit system due to non Rheem approved or incorrectly mixed closed circuit
fluid being used.
m) Non Rheem approved or incorrectly mixed closed circuit fluid being used or incorrect or insufficient filling
of the closed circuit system with the closed circuit fluid.
n) Ice formation in the waterways of the integrated in-series gas booster water heater where the electricity
supply has been switched off or has failed and the water heater has not been drained in accordance with
the instructions or due to an ambient temperature below -20°C (including wind chill factor).
2.8 Subject to any statutory provisions to the contrary, this warranty excludes any and all claims for damage to
furniture, carpet, walls, foundations or any other consequential loss either directly or indirectly due to leakage
from the water heater, or due to leakage from fittings and/ or pipe work of metal, plastic or other materials
caused by water temperature, workmanship or other modes of failure.
2.9 If the water heater is not sized to supply the hot water demand in accordance with the guidelines in the Rheem
water heater literature, any resultant fault will not be covered by the Rheem warranty.
3. WHAT IS COVERED BY THE RHEEM WARRANTY
FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT
3.1 Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance with
its specifications as follows:
What components
are covered
The period from the
date of installation in
which the fault must
appear in order to be
covered
What coverage
you receive
All components
Year 1
Repair and/or replacement of the faulty
component, free of charge, including labour.
The cylinder
(if the water heater is installed in a
single-family domestic dwelling)
Years 2 & 3
Repair and / or replacement of the cylinder,
free of charge, including labour.
Years 4 & 5
Replacement cylinder, free of charge.
Installation and repair labour costs are the
responsibility of the owner.
The cylinder
(if the water heater is not installed in a
single-family domestic dwelling)
Years 2 & 3
Replacement cylinder, free of charge.
Installation and repair labour costs are the
responsibility of the owner.
All components
(of integrated in-series gas booster)
(only if the water heater is installed in a
single-family domestic dwelling)
Years 2 & 3
Repair and/or replacement of the faulty
component, free of charge, including labour.
The heat exchanger
(of integrated in-series gas booster)
(only if the water heater is installed in a
single-family domestic dwelling)
Years 4 to 10
Replacement heat exchanger, free of charge.
Installation and repair labour costs are the
responsibility of the owner.
The solar collector
(all installations)
Years 2 to 5
Replacement solar collector, free of charge.
Installation and repair labour costs are the
responsibility of the owner.

RHEEM SOLAR WATER HEATER WARRANTY
–AUSTRALIA ONLY –
6
SOLAR WATER HEATER MODEL 596160
4. ENTITLEMENT TO MAKE A CLAIM UNDER THIS WARRANTY
4.1 To be entitled to make a claim under this warranty you need to:
a) Be the owner of the water heater or have consent of the owner to act on their behalf
b) Contact Rheem Service without undue delay after detection of the defect and, in any event, within the
applicable warranty period.
4.2 You are not entitled to make a claim under this warranty if your water heater:
a) Does not have its original serial numbers or rating labels.
b) Is not installed in Australia.
5. HOW TO MAKE A CLAIM UNDER THIS WARRANTY
5.1 If you wish to make a claim under this warranty, you need to:
a) Contact Rheem on 131031 and provide owner’s details, address of the water heater, a contact number
and date of installation of the water heater or if that’s unavailable, the date of manufacture and serial
number (from the rating label on the water heater)
b) Rheem will arrange for the water heater to be tested and assessed on-site.
c) If Rheem determines that you have a valid warranty claim, Rheem will repair or replace the water heater
in accordance with this warranty
5.2 Any expenses incurred in the making of a claim under this warranty will be borne by you.
6. THE AUSTRALIAN CONSUMER LAW
6.1 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.
6.2 The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under the
Australian Consumer Law.

7
SAFETY, WARNINGS, INSTALLATION NOTES
It is important you read the following safety and warnings information.
SAFETY AND WARNINGS
•This water heater is only intended to be operated by persons who have the experience or the knowledge
and the capabilities to do so.
•This water heater 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 water heater.
•If the power supply cord or plug to the solar storage tank or in-series gas booster is damaged, it must be
replaced by a qualified person in order to avoid a hazard. The power supply cord and plug must be
replaced with a genuine replacement part available from Rheem. Phone Rheem Service or their nearest
Accredited Service Agent to arrange for an inspection.
•The power leads from the solar storage tank and in-series gas booster must be plugged into weatherproof
electrical outlets. Take care not to touch the power plug with wet hands.
•This water heater uses 220 V - 240 V a.c. electrical power for operation of the control systems and the
electrically operated components. The removal of the front covers will expose 220 V - 240 V a.c. wiring.
They must only be removed by a qualified person.
•The solar storage tank is supplied with temperature sensors, a pressure relief valve and a combination
temperature pressure relief valve. The in-series gas booster is supplied with temperature sensors, a
FlameSafe™ protection system and a pressure relief valve. These devices must not be tampered with or
removed. The water heater must not be operated unless each of these devices is fitted and is in working
order.
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.
•Do not touch any exposed pipe work or fittings connecting the solar storage tank and the solar collectors,
as this may result in a burn injury. Very high temperature closed circuit fluid and in some circumstances
high temperature steam can be generated by the solar collectors under certain conditions and this flows
through the pipe work from the solar collectors to the solar storage tank.
Note: Any exposed pipe work or fittings in the collector circuit should be attended to and covered with
insulation. Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection.
•The circulator will operate whilst suitable solar conditions are available until water in the solar storage tank
is heated to 75°C during normal operation. During times of low solar energy gain or if boosting of the water
temperature is required, the in-series booster water heater will heat the water to its pre-set outlet
temperature setting.
Refer to “Solar Operation” on page 11 and to “How Hot Should The Water Be?” on page 12.
•Temperature controllers or an EZiSET kit must not be fitted to the in-series water heater as part of a solar
water heater system because water at a temperature much higher than the controller or EZiSET setting
can be delivered.
•The lever on the temperature pressure relief valve and expansion control valve (if fitted) requires to be
operated every six (6) months to clear any deposits and to ensure the valve and its drain line are not
blocked.
Refer to “Relief Valves” on page 9 and “Minor Maintenance Every Six Months” on page 16.
•Should the water from the water heater appear blue or if blue closed circuit fluid is noticed around the
base of the water heater, this indicates a leak of the closed circuit fluid from the heat exchanger. The
closed circuit fluid is non-toxic and not hazardous to health. Phone Rheem Service or their nearest
Accredited Service Agent to arrange for an inspection.

SAFETY, WARNINGS, INSTALLATION NOTES
8
•For continued safety of this water heater it must be installed, operated and maintained in accordance with
the Owner’s Guide and Installation Instructions.
•Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem Service or their
nearest Accredited Service Agent.
•Only a person qualified to install or service a water heater can drain the water heater, if this is required.
•Do not modify this water heater.
•The water heater has a freeze protection system. The water heater, including the in-series gas booster,
is not suitable for installation in areas where the ambient temperature falls below -20°C (including wind
chill factor). The frost protection system for the gas booster will be rendered inoperable if electrical power
is not available. If it is necessary to switch the power off to the gas booster and there is a risk of freezing,
then it is necessary to drain the gas booster.
Refer to “Freeze Protection” on page 26 for further information and to “Draining The Gas Booster Water
Heater” on page 15.
•Do not spray aerosols in the vicinity of this water heater while it is
in operation. Propellants and gases in many aerosol sprays contain
hydrocarbons which are flammable. Gases from aerosol sprays
may also become corrosive when drawn into a flame.
•Do not use or store flammable materials in or near the gas booster.
Flammable liquids (such as petrol), combustible materials (such as
newspapers) and similar articles must be kept well away from the
water heater and the flue terminal.
•Do not store swimming pool chemicals, household cleaners, etc.,
near the gas booster.
•Do not place articles on or against the gas booster, or in contact
with the flue terminal. Ensure the flue terminal is not obstructed in
any way at any time.

SAFETY, WARNINGS, INSTALLATION NOTES
9
RELIEF VALVES
Temperature Pressure Relief Valve
This water heater incorporates a temperature pressure relief valve
located near the top of the solar storage tank. This valve is essential for
the water heater’s safe operation.
It is possible for the valve to discharge a quantity of water through the
drain line during each heating period. This quantity should be equal to
approximately 1/50 of the hot water used, as water expands by this
volume when heated.
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 will discharge the quantity of water from its
drain line during the heating period instead of the temperature pressure
relief valve as it has a lower pressure rating.
Valve Operation
Continuous leakage of water from either valve and its drain line may
indicate a problem with the water heater. Refer to “Temperature
Pressure Relief Valve or Expansion Control Valve Running” on page 23.
Warning: Never block the outlet of either valve or their drain lines for
any reason. A relief valve drain must be left open to atmosphere, and be
installed in a continuously downward direction.
In locations where water pipes are prone to freezing, the relief valve
drain line must be insulated and not exceed 300 mm in length before
discharging into a tundish through an air gap.
Operate the easing lever on the temperature pressure relief valve and
expansion control valve once every six (6) months to clear any deposits
and ensure the valve and its drain line are not blocked. It is very
important the lever is raised and lowered gently. Refer to “Minor
Maintenance Every Six Months” on page 16.
Warning: Water discharged from the temperature pressure relief valve drain line will be hot. Exercise care
to avoid any splashing of water by standing clear of the drain line’s point of discharge when operating either
valve’s easing lever.
Warning: Failure to operate the easing lever on the relief valve once every six (6) months may result in the
solar storage tank cylinder failing.
If water does not flow freely from the drain line when the lever is lifted, then the water heater must be checked.
Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection.
The temperature pressure relief valve should be replaced at intervals not exceeding five (5) years and the
expansion control valve should be checked for performance or replaced at intervals not exceeding
five (5) years. The checking of the valves performance or replacement should occur more frequently in areas
where there is a high incidence of water deposits. Refer to “Water Supplies” on page 18.
outlet /
drain line
lift until water
flows from the
drain line –
lower gently

SAFETY, WARNINGS, INSTALLATION NOTES
10
INSTALLATION NOTES
This water heater must be installed:
•by a qualified person,
•in accordance with the installation instructions,
•in compliance with the Plumbing Code of Australia (PCA) and Plumbing Standard AS/NZS 3500.4,
▪This water heater is designed for outdoor installation.
▪This water heater is intended to be permanently connected to the water mains and not connected by
a hose-set. A braided flexible hose or semi-flexible connector may be used for connection to the water
heater, where permitted by AS/NZS 3500.4.
•in compliance with the Gas Installations Standard AS/NZS 5601.1,
•in compliance with the Australian / New Zealand Wiring Rules AS/NZS 3000,
•in compliance with all local codes and regulatory authority requirements.
Installation and commissioning requirements and details for the installing plumber and licensed electrical
worker are contained on pages 27 to 66.
Mains pressure water supply
The water heater is designed to operate at mains pressure by connecting directly to the mains water supply.
The water heater is supplied with a temperature pressure relief valve with a pressure rating of 1000 kPa. If an
expansion control valve has been installed on the cold water line to the water heater, this should have a
pressure rating of 850 kPa.
The maximum mains water supply pressure for the water heater is 800 kPa if an expansion control valve is
not installed, or 680 kPa if an expansion control valve is installed. If the mains supply pressure in your area
exceeds these values, a pressure limiting valve must be installed.
The supply pressure should be greater than 120 kPa for the rated flow and performance of the gas booster to
be achieved.
The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
Securing of the water heater
The top of the solar storage tank is to be secured to the wall with the wall bracket and suitable fasteners for
the wall type and load bearing requirements. Refer to “Wall Brackets”on page 29 for additional information.

11
ABOUT YOUR WATER HEATER
WATER HEATER APPLICATION
This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable
water. Its use in an application other than this may shorten its life.
MODEL TYPE
Your Rheem®Premier Loline solar water heater is designed for the solar collectors to be roof mounted and
the solar storage tank to be installed at ground or floor level. The solar storage tank and integrated Rheem
continuous flow 874820NF/J in-series gas booster is suitable for outdoor installation only and with either one
only CSA2013 or two only NPT200 or LCS solar collectors. The system is suitable for installation in areas
subject to frost or freeze conditions. Freeze conditions occur below 6°C.
SOLAR OPERATION
The Rheem Premier Loline solar water heater has its vitreous enamel lined solar storage tank installed at
ground or floor level, remotely from the solar collectors. This water heater is a closed circuit solar hot water
system with a heat exchanger in the solar storage tank.
The heat exchanger is filled with closed circuit fluid and is connected to the solar collectors by insulated copper
pipe work forming a closed circuit. The closed circuit fluid is a solution of a blue, non-toxic food grade propylene
glycol concentrate mixed with water. The closed circuit concentrate is used to lower the freezing temperature
of the closed circuit fluid and provides protection against freezing.
As the sun heats the solar collectors, the increase in temperature activates the pump. The pump switches on
whenever the solar collectors are hotter than the water in the tank and the water requires heating. The pump
moves the closed circuit fluid from the solar storage tank heat exchanger through an insulated copper pipe to
the solar collectors to be heated by the sun’s energy and then back to the heat exchanger. Heat transfers from
the closed circuit fluid in the heat exchanger to the water stored in the solar storage tank.
This process continues while solar energy is available and until the water in the solar storage tank reaches a
temperature of approximately 75°C. The pump is then deactivated and the closed circuit fluid in the solar
collectors and solar pipe work drains back into the heat exchanger in the solar storage tank.
The closed circuit provides protection to the solar collectors and solar circuit in harsh water areas. The drain
back principle provides protection to the system in freezing conditions.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
GAS BOOSTING OPERATION
Water stored in the solar storage tank passes through the in-series gas
booster when a hot tap is opened. The in-series gas booster is for heating
the water at times of low solar energy gain, such as during cloudy or rainy
weather, or during colder months.
Solar heated water can reach temperatures up to 75°C in the solar storage
tank. When the solar heated water temperature is 58°C and above, the in-
series gas booster will not boost the water temperature.
The in-series gas booster operates automatically if heating of the water is
required. When the solar heated water temperature is below 58°C, the gas
burners ignite to provide immediate heating of the water to its preset outlet
temperature setting. The heat produced by the burner is transferred to the
water through the heat exchanger. The water is heated to a constant
temperature by the automatic adjustment of the gas supply to the burner to
suit the water flow rate. The gas burners extinguish when the hot tap is
closed.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.

ABOUT YOUR WATER HEATER
12
REDUCED HOT WATER FLOW WHEN HEAT EXCHANGER IS COLD
At a cold start-up, i.e. when the gas booster has not operated for some time (which is most often first thing in
the morning), the initial flow of hot water may be reduced for a period of 5-10 seconds while the heat exchanger
warms up. This is both an energy and water saving feature of this water heater. Once the heat exchanger
has warmed up the hot water flow will increase and remain at normal flow levels. This feature will only occur
at a cold start-up and not when the heat exchanger is already warm from a recent use of hot water.
HOW HOT SHOULD THE WATER BE?
The solar control unit will circulate the closed circuit fluid through the
solar collectors until a temperature of approximately 75°C is reached
in the solar storage tank. During periods of low solar energy gain, the
in-series gas booster will boost the water temperature automatically
to its preset outlet temperature setting.
The factory preset outlet temperature setting of the in-series gas
booster is 60°C.
Note: The preset outlet temperature setting of the in-series gas
booster cannot be adjusted by the householder. The setting can only
be adjusted by the installer, Rheem Service or their nearest
Accredited Service Agent.
Note: AS 3498 requires that a water heater provides the means to
inhibit the growth of Legionella bacteria in potable water. This water
heater has an in-series gas booster which can satisfy this AS 3498
requirement provided the gas booster is energised, the booster preset
outlet temperature setting is 70°C or higher and a remote temperature
controller or an EZiSET kit is not used.
Warning: Temperature controllers or an EZiSET kit must not be fitted to the in-series gas booster as part
of a solar water heater system because water at a temperature much higher than the controller or EZiSET
setting can be delivered.
HOTTER WATER INCREASES THE RISK OF SCALD INJURY
This water heater can deliver hot water at a temperature up to 75°C, sufficiently hot to cause severe scalding.
Water at this temperature may have been plumbed to fixtures where water hotter than 50°C is allowed, such
as the kitchen and laundry.
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 bathroom and ensuite when this water heater is installed. This will
keep the water temperature below 50°C at the bathroom and ensuite. The risk of scald injury will be reduced
and still allow hotter water to the kitchen and laundry.
FREEZE PROTECTION
The water heater has a freeze protection system. The water heater, including the in-series gas booster, is not
suitable for installation in areas where the ambient temperature falls below -20°C (including wind chill factor).
Refer to “Freeze Protection” on page 26 for further information.
PRECAUTIONS
The water heater must be maintained in accordance with the Owner’s Guide and Installation Instructions. Refer
to “Maintenance Requirements” on page 16 and to “Anode Inspection and Replacement” on page 19.
If this water heater 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 water heater were to become inoperable for any
reason. We recommend you seek advice from a plumber or specifier about your needs and building back-up
redundancy into your hot water supply system.
typical maximum
temperature from solar gain
maximum recommended
supply temperature to
bathrooms and ensuites
in-series gas booster
factory preset outlet
temperature setting

ABOUT YOUR WATER HEATER
13
SOLAR MONITOR
The solar storage tank incorporates a solar monitor. The solar monitor is located above the lower front cover
and houses both a green and a red LED.
The green LED, marked “Solar”, indicates the current operational mode of the solar water heater and the red
LED, marked “Attention”, indicates a fault mode.
The green LED will emit either a constant glow or a series of flashes, with a two (2) second interval between
each series.
The red LED will emit a series of flashes, with a two (2) second interval between each series, only if there is a
particular fault condition with the system.
The operational modes are:
Flashes
Operational Modes
solid green
(remains on)
Standby mode
2 x green
Flooding solar circuit
3 x green
Pump flow control
4 x green
Pump flow established
5 x green
Tank at maximum temperature
no green
(remains off)
Call for service
If the power supply to the water heater is on and the green LED is off or the red LED is flashing, this indicates
there is a fault with the water heater. The red LED may emit up to six (6) flashes in each series of flashes.
Count the number of flashes and phone Rheem Service or their nearest Accredited Service Agent to arrange
for an inspection.
RAINWATER COLLECTION SYSTEM
If the solar collectors and solar pipe work are installed on a section of roof which is part of a rainwater runoff
collection system, then it is recommended this section of roof and its gutter be isolated from the rainwater
collection system.
The closed circuit fluid acts as an anti-freeze agent and rust inhibitor, is non-toxic to humans and is harmless
to the environment. However it does have an adverse effect on water stored in rainwater tanks. It will kill
microscopic algae typically present in rainwater tanks and cause an unpleasant odour to develop. This will
result in the rainwater tank having to be drained and cleaned.
If a rainwater tank does become contaminated with closed circuit fluid, then the following actions should be
undertaken by a qualified person. Additional actions may be necessary to return the water supply to a
consumable state.
•Correct the leak or spillage.
•Wash down the roof area where the spill or leak has occurred.
•Flush out the gutters and down pipes.
•Determine how the closed circuit fluid made its way into the rainwater tank. If the section of roof supporting
the solar water heater is not isolated from the rainwater collection system, then this should be remedied.
•Empty the rainwater tank, and clean out all algae from the inside of the tank.
•Refill the rainwater tank with fresh water.
Refer to “Rainwater Collection System” on page 29 for additional information.

ABOUT YOUR WATER HEATER
14
TO TURN OFF THE WATER HEATER
If you plan to be away from home for a few nights, we suggest you leave the water heater switched on.
If it is necessary to turn off the water heater:
•Switch off the electrical supply to the solar storage tank and to the in-series gas booster at the power
outlets if there is no risk of freezing conditions occurring (refer to the notes below).
•Close the gas isolation valve at the inlet to the water heater.
•Close the cold water isolation valve at the inlet to the water heater.
Notes
•The in-series gas booster frost protection system will be rendered inoperable if electrical power is not
available at the gas booster. Damage caused by freezing due to the unavailability of power at the in-series
gas booster is not covered by the Rheem warranty (refer to “Terms of the Rheem Warranty” on page 4).
•If it is necessary to switch the power off to the in-series gas booster and there is a risk of freezing, then it
is necessary to drain the gas booster (refer to “Draining the Gas Booster Water Heater” on page 15).
TO TURN ON THE WATER HEATER
•Screw in the drain plugs at the cold water inlet and hot water outlet of the in-series gas booster if the gas
booster has been drained.
•Open the cold water isolation valve fully at the inlet to the water heater.
•Open all of the hot water taps in the house (don’t forget the shower).
Air will be forced out of the taps.
•Close each tap as water flows freely from it.
•Open the gas isolation valve fully at the inlet to the water heater.
•Plug in the solar storage tank and in-series gas booster at the power outlets and switch on the electrical
supplies.
The power outlets must be switched on for the solar controls to operate and solar gain to be achieved and
for the in-series gas booster to operate.
The in-series gas booster will operate automatically when you open a hot tap, if boosting is required.
GOING ON HOLIDAYS
It is not necessary to switch off the electrical supply at the power outlets to the solar storage tank and in-series
gas booster if you are going away. However, if it is necessary to switch off the power to the water heater, refer
to “To Turn Off The Water Heater” on page 14.
If the power to the water heater is switched off and there is a risk of freezing, then it is necessary to drain the
in-series gas booster (refer to “Draining the Gas Booster Water Heater” on page 15).

ABOUT YOUR WATER HEATER
15
DRAINING THE GAS BOOSTER WATER HEATER
•Turn off the water heater (refer to “Turn Off The Water Heater” on page 14).
•Open a hot tap (preferably the shower outlet).
•Unscrew the two drain plugs, one each at the cold water inlet and hot water outlet, on the underside of
the in-series gas booster.
Water will drain from the in-series gas booster.
•When water stops flowing from the in-series gas booster, close the hot tap.
Note: It is recommended not to screw the drain plugs back in, until the water heater is to be turned on again.
VICTORIAN CUSTOMERS
Notice to Victorian Customers from the Victorian Building Authority. 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 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 water heater and ask for your Compliance Certificate.
DOES THE WATER CHEMISTRY AFFECT THE WATER HEATER?
The water heater is suitable for most public water supplies, however some water chemistries may have
detrimental effects on the water heater, components and fittings. Refer to “Water Supplies” on page 18.
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 18 to 20.
HOW LONG WILL THE WATER HEATER LAST?
The water heater is supported by a manufacturer’s warranty (refer to page 4). There are a number of factors
that will affect the length of service the water heater 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 12.

16
MAINTENANCE REQUIREMENTS
HOUSEHOLD MAINTENANCE AROUND THE SOLAR STORAGE TANK
Care should be taken when conducting general household maintenance, such as lawn mowing and grass
cutting, around the solar storage tank. Careless use of devices such as a whipper snipper could damage or
cut a sensor lead or electrical cable.
If a sensor lead or electrical cable is damaged or cut, solar contribution may not be achieved. In addition, if the
electrical cable has been damaged or cut, wiring may be exposed leading to a dangerous situation.
On a regular basis, inspect around the water heater for insect infestations, such as ants. Insects may look for
a warm place to nest, particularly in wet weather. Insects encroaching into or nesting in the water heater and
the solar control unit can interfere with the operation of the water heater and also damage components. Spray
insecticide around the base of the water heater if necessary to rid the area of insects. Refer to “Minor
Maintenance Every Six Months” on page 16.
MINOR MAINTENANCE EVERY SIX MONTHS
It is recommended minor maintenance be performed every six (6) months. Minor maintenance can be
performed by the dwelling occupant.
Switch off the electrical supply at the power outlet to the water heater prior to performing general maintenance.
This will prevent the water heater from operating while you clean or spray around the water heater. Switch on
the electrical supply at the power outlet to the water heater when finished performing the general maintenance.
The minor maintenance includes:
•Operate the easing lever on the temperature pressure relief valve. It is very important the lever is raised
and lowered gently. Refer to “Relief Valves” on page 9.
Warning: Water discharged from the temperature pressure relief valve drain line will be hot. Exercise
care to avoid any splashing of water by standing clear of the drain line’s point of discharge when operating
the valve’s easing lever.
•Operate the easing lever on the expansion control valve (if fitted). It is very important the lever is raised
and lowered gently. Refer to “Relief Valves” on page 9.
•The jacket of the gas booster can be cleaned with a soft cloth and warm mild soapy water if required.
Under no circumstances should abrasive materials or powders be used.
•Inspect around the air inlet, flue terminal and the gas booster in general for plant growth.
◼Trim back any shrubs, bushes or other plants which have encroached around the gas booster.
Plant growth across the air inlet and flue terminal can interfere with the performance of the gas
booster.
•Inspect around the solar storage tank and gas booster for infestations of insects, such as ants. Insects
encroaching into or nesting in the solar storage tank or gas booster can interfere with the operation of the
water heater and also damage components. The area around the solar storage tank and gas booster can
be sprayed with insecticide to rid the area of insects.
Warning: Do not spray insecticide near the solar storage tank and gas booster while they are
operating. Propellants in many insect sprays contain hydrocarbons which are flammable. Gases from
aerosol sprays may also become corrosive when drawn into a flame.
▪If necessary to rid the area of insects:
➢Ensure the electrical supply at the power outlets to the solar storage tank and gas booster have
been switched off.
➢Spray the affected are, taking care not to spray into the air inlet or flue terminal or onto the surface
of the gas booster.
➢Wait a few minutes to allow any aerosol gases to dissipate before switching on the electrical
supply at the power outlets to the solar storage tank and gas booster.

MAINTENANCE REQUIREMENTS
17
MAJOR SERVICE EVERY FIVE YEARS
It is recommended a major service be conducted on the water heater every five (5) years. If an anode
replacement is conducted sooner than a major service, then the major service should coincide with the
replacement.
Warning: Servicing of a water heater 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 water heater.
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 anodes.
If an anode is not replaced, it should be replaced within three years of this service (refer to “Anode
Inspection and Replacement” on page 19).
•Check the system for correct operation.
•Check the closed circuit fluid level.
•Clean the collector glass.
•Check and if necessary adjust the gas pressure.
•Check the operation of and clean the burner.
•Check and clean the line strainer.
•Visually check the unit for any potential problems.
•Inspect all connections.
Note: The solar storage tank may need to be drained during this service. After the completion of the service,
the solar storage tank will take some time to reheat the water by solar gain.
COLLECTOR GLASS
Ensure the glass on your solar collectors is free of dust, salt spray or any other matter which may reduce the
effectiveness of the solar collectors. Rainfall should keep the collector adequately clean. It is recommended
the collector glass be washed clean at least every three months should adequate rain not have fallen in this
period.
Collector glass can be hosed down or if the solar collectors is accessible such as on a trafficable roof, wash
the collector glass with water and a soft brush when the solar collectors is cool, such as early in the morning.
In extremely dusty areas extra attention may need to be given to keeping the collector glass clean.
Have any trees trimmed which may shade the solar collectors.
Rheem solar collectors have passed the AS/NZS 2712 requirements for resistance to hailstone damage, so it
is not normally necessary to fit a guard to a collector. Stone Guards are available for the LCS and NPT200
solar collectors to provide a level of protection to the collectors against vandalism or accidental damage.
Contact Rheem or your local Rheem Solar Water Heater Distributor for details.

18
WATER SUPPLIES
This water heater must be installed in accordance with this advice to be covered by the Rheem
warranty.
This water heater 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 water heater
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 water heater 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 water heater cylinder, a temperature pressure relief valve and a continuous flow
water heater heat exchanger.
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 water heater 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 water heater, 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
water heater cylinder.
The correct colour coded anode must be selected and fitted to the water heater in accordance with the following
advice and the Anode Selection chart on page 18 for the Rheem warranty to apply to the water heater 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 (3570 μS/cm),
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 / conductivity level of the water

WATER SUPPLIES
19
ANODE INSPECTION AND REPLACEMENT
The anode installed in this water heater 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 five (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 17) then the maximum time after installation when the anode should be replaced for this water
heater is eight (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 water
heater during long periods of no use.
If, under these conditions, the water heater 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 is used as a measure of the water’s corrosive or scaling properties. The saturation index
figures stated are calculated using a water temperature of 80°C.
In a corrosive water supply, the water can attack copper parts and cause them to fail.
Where the saturation index is less than –1.0, the water is very corrosive and the Rheem warranty does not
apply to a continuous flow water heater heat exchanger.
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 water heater cylinder.
Where the saturation index exceeds +0.80, the Rheem warranty does not apply to a continuous flow water
heater heat exchanger.
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 20.
Refer to the cold water connection detail on page 42 for the position of the expansion control valve.

WATER SUPPLIES
20
SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY
The water heater, solar collectors and their components are not suitable for certain water chemistries. Those
chemistries are listed below. If the water heater is connected at any time to a water supply with the following
water chemistry, the Rheem warranty will not cover any resultant faults on the components listed below:
Water Chemistry
Component
Total Dissolved Solids (TDS) > 2500 mg/L
water heater cylinder
Total Dissolved Solids (TDS) not suitable for anode type
water heater cylinder
Saturation Index (SI) < -1.0
gas booster copper heat exchanger
Saturation Index (SI) > +0.4
(if an expansion control valve is not fitted)
temperature pressure relief valve,
water heater cylinder
Saturation Index (SI) > +0.8
gas booster copper heat exchanger
+0.4 +0.80
very corrosive very scaling
scaling
corrosive
-1.0
no warranty applies to a:
temperature pressure relief valve
or a water heater cylinder unless
an expansion control valve is fitted.
no warranty applies to a:
-direct (open circuit) solar collector
-continuous flow copper heat
exchanger
SATURATION INDEX (SI)
SOLAR WATER HEATERS - INTEGRATED GAS BOOST (CONTINUOUS FLOW)
WITHIN WARRANTY
SPECIFICATION
SATURATION INDEX
(calculated @ 80°C water temperature)
no warranty applies to a:
-direct (open circuit) solar collector
-continuous flow copper heat
exchanger