Rheem Stellar 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

Stainless Steel

Electric Domestic Water Heater

PATENTS

This water heater may be protected by one or more patents or registered designs

in the name of Rheem Australia Pty Ltd or Aquamax Australia Pty Limited.

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.

CONTENTS

HOUSEHOLDER - We recommend you read pages 4 to 18.

The other pages are intended for the installer

but may be of interest

About Your Water Heater............................................................4

Regular Care ................................................................................9

Water Supplies...........................................................................12

Save A Service Call ...................................................................16

Installation..................................................................................19

Connections –Plumbing ..........................................................27

Connections –Electrical...........................................................31

Commissioning..........................................................................33

Draining The Water Heater .......................................................34

Warranty .....................................................................................38

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

The Rheem®water heater you have chosen is a Stellar™model with a

stainless steel cylinder. Stellar stainless steel models are available with a single

heating unit (refer to “Single Element Model” on page 7). The water heaters can

be installed indoor or outdoor.

The water in the cylinder is heated by the electric immersion heating unit. A

thermostat controls the temperature. Automatic safety controls are fitted to the

water heater to provide safe and efficient operation.

The water heater has a brass plug on one side of the tank. The plug blocks off

an alternative cold water connection point and is not to be tampered with or

removed.

MAINS PRESSURE

The water heater 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 21, 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 water heater features a

tradesperson adjustable thermostat,

which allows you to choose the most

suitable temperature for your hot water

needs. Refer to “Temperature

Adjustment” on page 6.

To meet the requirements of the

National Plumbing Standard the

temperature of the stored water must

not be below 60°C.

maximum thermostat

setting

minimum thermostat

setting and minimum

recommended stored water

temperature.

maximum recommended

supply temperature to

bathrooms and ensuites

ABOUT YOUR WATER HEATER

HOTTER WATER INCREASES THE RISK OF SCALD INJURY

This water heater 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

bathroom and ensuite when the 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.

WARNING

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.

This water heater uses 240 V AC power for the electrically operated

components. The removal of the front cover(s) will expose 240 V wiring. It must

only be removed by a qualified person.

SAFETY

This water heater is supplied with a thermostat, an over-temperature cut-out,

and a combination temperature 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 operation of the over-temperature cut-out on the thermostat indicates a

possibly dangerous situation. If the over-temperature cut-out operates, it must

not be reset and the water heater must be serviced by a qualified person.

If the electrical conduit to the water heater 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 heater 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.

ABOUT YOUR WATER HEATER

PRECAUTIONS

Where damage to property can occur in the event of the water heater leaking,

the water heater 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 water heater must be maintained in accordance with the Owner’s Guide

and Installation Instructions. Refer to “Regular Care” on page 9.

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 your

plumber or specifier about your needs and building back up redundancy into

your hot water supply system.

THERMOSTAT

The thermostat automatically controls the electricity supply to the heating unit

so a constant temperature is maintained. The thermostat and its protective

over-temperature cut-out is mounted inside the front cover of the water heater.

There is no need to switch the water heater off when it is not in use, except

when you are on an extended holiday. The thermostat is fully automatic and

power is only used when heating is required.

TEMPERATURE ADJUSTMENT

This water heater features a tradesperson adjustable thermostat. This requires

a licensed tradesperson to make any temperature adjustments. The thermostat

has a maximum temperature setting of 75°C and a minimum temperature

setting of 60°C.

We advise you have your electrician adjust the thermostat to the lowest

temperature setting that meets your needs, especially if there are young

children or elderly people in your home. Refer to “Hotter Water Increases The

Risk of Scald Injury” on page 5.

ABOUT YOUR WATER HEATER

SINGLE ELEMENT MODEL

This type of water heater has one heating unit with

its own thermostat. The heating unit is at the base

of the water heater and can be connected to a

Continuous or Off-Peak electricity supply. The

thermostat is factory set to 65°C and is

tradesperson adjustable between 60°C to 75°C.

Continuous electricity supply

This type of connection is suited to where the

storage capacity is less than the normal daily

usage.

Off-Peak electricity supply

This type of connection will only allow heating

to occur during set hours. A volume of water

sufficient for the day’s total use is heated and

stored. This type of heating will be more

economical due to reduced tariffs by the

electricity authority.

TO TURN OFF THE WATER HEATER

If you plan to be away from home for only 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 at the isolating switch to the water heater.

Close the cold water isolation valve at the inlet to the water heater.

TO TURN ON THE WATER HEATER

Open the cold water isolation valve fully on the cold water line to the water

heater.

Switch on the electrical supply at the isolating switch to the water heater.

GOING ON HOLIDAY?

If you plan to be away from home for one or two nights, we suggest you leave

the water heater switched on. However, if you plan to stay away more than a

few nights, conserve energy by switching the water heater off at either the

switchboard or isolating switch (if one is installed).

Note: When the electrical supply is switched back on, the water heater will take

some time to reheat the water. Depending upon the power supply connection,

hot water may not be available until the next day.

ABOUT YOUR WATER HEATER

HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?

Installation requirements are shown on pages 19 to 25. The water heater must

be installed:

by a qualified person, and

in accordance with the installation instructions, and

in compliance with Standards AS/NZS 3500.4, AS/NZS 3000 and all local

codes and regulatory authority requirements.

In New Zealand the installation must also conform with the New Zealand

Building Code.

VICTORIAN CUSTOMERS

Notice to Victorian Customers from the Victorian Plumbing Industry

Commission. This water heater must be installed by a licensed person as

required by the Victorian Building Act 1993.

Only a licensed person will give you a Compliance 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, its

components and fittings. Refer to “Water Supplies” on page 12.

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 12 to 15.

HOW LONG WILL THE WATER HEATER LAST?

The water heater is supported by a manufacturer’s warranty (refer to page 38).

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 6.

REGULAR CARE

MAJOR FIVE YEAR SERVICE

It is recommended a major five (5) year service be conducted on the water

heater.

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 five (5) year service and routine replacement of any components,

such as the 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.

Check the electric heating unit for excessive calcium build up or corrosion

and replace if 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 water heater 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 power supply connection, hot water may not be

available until the next day.

REGULAR CARE

MINOR SIX MONTH MAINTENANCE

It is recommended minor maintenance be performed every six (6) months by

the dwelling occupant.

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 11.

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 10.

Check the drain line from the safe tray (if one is installed) is not blocked.

EXPANSION CONTROL VALVE

In many areas, including South Australia, Western Australia and scaling water

areas, 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 (6)

months. It is very important you raise and lower the lever gently. The

expansion control valve should be checked for performance or replaced at

intervals not exceeding 5 years, or more frequently in areas where there is a

high incidence of water deposits.

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