Rheem 850 Series 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
Gas Domestic Outdoor
Water Heater
850, 854 series
265, 295 models

An electronic copy of these Owner’s Guide and Installation Instructions
can be downloaded from rheem.com.au.
PATENTS
This water heater 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 application.
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.
RHEEM AUSTRALIA PTY LTD A.B.N. 21 098 823 511
www.rheem.com.au
For Service Telephone 131 031 AUSTRALIA

3
CONTENTS
HOUSEHOLDER
This booklet contains important information about your
new water heater, including terms of the Rheem warranty.
We recommend you read pages 8 to 26,
and the terms of the Rheem warranty on pages 4 to 7.
The other pages are intended for the installer but may be of interest.
Warranty.......................................................................................4
Safety, Warnings, Installation Notes..........................................8
About Your Water Heater..........................................................12
Maintenance Requirements......................................................16
Water Supplies...........................................................................19
Save A Service Call ...................................................................23
Installation..................................................................................27
Connections –Plumbing...........................................................36
Commissioning..........................................................................41
Lighting The Water Heater........................................................45
Draining The Water Heater........................................................49

4
RHEEM GAS DOMESTIC MAINS PRESSURE
WATER HEATER WARRANTY - AUSTRALIA ONLY
GAS WATER HEATER 850, 854 SERIES 265, 295 MODELS
1. THE RHEEM WARRANTY –GENERAL
1.1 This warranty is given by Rheem Australia Pty Limited ABN 21 098 823511 of
1 Alan Street, Rydalmere New South Wales.
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
[e-mail] (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 23rd April 2018.
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 Rheem may reject a claim under this warranty in its sole discretion if:
a) You do not arrange for a major service to be conducted on your water
heater in the fifth year after installation, in accordance with Rheem’s
recommendation in the Owner’s Guide and Installation Instructions; and
b) The fault giving rise to the warranty claim would have been detected and
rectified during that major service.
2.2 The decision of whether to repair or replace a faulty component is at Rheem’s
sole discretion.
2.3 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.
2.4 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.

RHEEM GAS DOMESTIC MAINS PRESSURE
WATER HEATER WARRANTY - AUSTRALIA ONLY
5
GAS WATER HEATER 850, 854 SERIES 265, 295 MODELS
2.5 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.
2.6 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 additionalmaterials
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.
2.7 This warranty only applies to the original and genuine Rheem water heater in
its original installed location and any genuine Rheem replacement parts.
2.8 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 ofGod such as floods, storms, fires, lightning strikesandthe 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 torepair or modifications tothe water heater by a person
other than Rheem Service or a Rheem Accredited Service Agent.
f) Faulty plumbing or faulty gas supply.
g) Failure to maintainthe water heater in accordance with the Owner'sGuide
and Installation Instructions.
h) Transport damage.
i) Fair wear and tear from adverse conditions (for example, corrosion).
j) Cosmetic defects.

RHEEM GAS DOMESTIC MAINS PRESSURE
WATER HEATER WARRANTY - AUSTRALIA ONLY
6
GAS WATER HEATER 850, 854 SERIES 265, 295 MODELS
2.9 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.
2.10 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
850, 854 series 265, 295 models
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 to 10
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.

RHEEM GAS DOMESTIC MAINS PRESSURE
WATER HEATER WARRANTY - AUSTRALIA ONLY
7
GAS WATER HEATER 850, 854 SERIES 265, 295 MODELS
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.

8
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 ormental capabilities i.e. the infirm, or by children. Children
should be supervised to ensure they do not interfere with the water heater.
•This water heater is supplied with a thermostat, an over-temperature cut-out,
and a combination temperature pressure relief valve. In addition, a
RheemPlus water heater has a temperature limiting 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 modify this water heater.
•Do not use or store flammable
materials in or near this water heater.
Flammable liquids (such as petrol),
combustible materials (such as
newspapers) and similar articles must be
kept well away from thewater heater and
the flue terminal.
•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 store swimming pool chemicals, household cleaners, etc., near the
water heater.
•Do not place articles on or against this water heater, 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
•The water heater will operate until a water temperature of up to 65°C is
reached, depending upon the thermostat setting. A Rheemglas®850 series
can deliver hot water at this temperature. A RheemPlus®854 series model is
temperature limited at the outlet to supply water not exceeding 50°C to
fixtures used primarily for personal hygiene.
Refer to “How Hot Should The Water Be?” on page 12 and “Temperature
Adjustment” on page 13.
•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.
•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.
RELIEF VALVES
Temperature Pressure Relief Valve
This water heater incorporates a temperature
pressure relief valve located near the topof the
water heater. 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.

SAFETY, WARNINGS, INSTALLATION NOTES
10
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 25.
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 andits drainline
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 water heater cylinder failing.
If water does not flow freely from the drain line when the lever is lifted, then the
waterheatermustbechecked.PhoneRheemServiceortheirnearestAccredited
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 19.
lift until water
flows from the
drain line –
lower gently
drain
line