Rheem 613050 Technical Document

This water heater must be installed and serviced by a qualified person.

Please leave this guide with a responsible officer.

Owner’s Guide

and

Installation Instructions

Electric Heavy Duty

Water Heater

PATENTS

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

TRADEMARKS

®Registered trademark of Rheem Australia Pty Ltd.

TM 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

CONTENTS

RESPONSIBLE OFFICER –We recommend you read pages 4 to 13.

The other pages are intended for the installer but may be of interest.

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

Maintenance Requirements........................................................................................................ 7

Water Supplies............................................................................................................................. 9

Save A Service Call ................................................................................................................... 12

Installation.................................................................................................................................. 14

Connections –Plumbing .......................................................................................................... 20

Connections –Electrical........................................................................................................... 22

Multiple Installations ................................................................................................................. 24

Commissioning.......................................................................................................................... 28

Draining The Water Heater ....................................................................................................... 29

Warranty ..................................................................................................................................... 31

ABOUT YOUR WATER HEATER

WATER HEATER APPLICATION

This water heater is designed for the purpose of heating potable water. Its use in an application other than

this may shorten its life.

MODEL TYPE

The Rheem®Heavy Duty Electric water heater model you have chosen

can be installed indoor or outdoor and is either a 50 litre or 315 litre

model. The 50 litre has three heating units and the 315 litre has either

three or six heating units.

Water is stored in a vitreous enamel lined steel cylinder and heated by

either 3 or 6 electric immersion heating units. The temperature is

controlled by thermostats. Automatic safety controls are fitted to the

water heater to provide safe and efficient operation.

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 15, 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 has a minimum temperature setting of 60°C and a

maximum recommended thermostat setting of 75°C –613050, 77°C –

613315, 82°C –616315. Refer to “Temperature Adjustment” on

page 5.

The water heater can provide hot water at sanitising temperatures.

To meet the requirements of the National Plumbing Standard the

temperature of the stored water must not be below 60°C.

If this water heater is installed as an in-series booster water heater as

part of a solar water heating system, to maximise solar contribution it is

recommended the thermostats are set at 60°C, 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. This water

heater can satisfy this AS 3498 requirement provided it is energised

and the thermostat setting is 60°C or higher, including when it is used

as an in-series booster water heater for a solar 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 bathing and public areas when this water heater is installed. This will

keep the water temperature below 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.

maximum recommended

thermostat setting

616315 –82°C

613315 –77°C

613050 –75°C

minimum recommended

stored water temperature

and minimum thermostat

setting

maximum recommended

supply temperature to

bathrooms, ensuites and

public areas

ABOUT YOUR WATER HEATER

THERMOSTATS

The thermostats automatically control the electricity supply to the heating units so a constant temperature is

maintained. The thermostats and their protective over temperature cut out are 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. The thermostats are

fully automatic and power is only used when heating is required.

TEMPERATURE ADJUSTMENT

The water heater features tradesperson adjustable thermostats. They require a licensed tradesperson to

make any temperature adjustments. We advise the thermostats are adjusted to the lowest temperature

setting that meets your needs, especially if there are young children or elderly people in the premises. Refer

to “Hotter Water Increases the Risk of Scald Injury” on page 4.

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 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.

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 “Maintenance Requirements” on page 7 and to “Anode Inspection and Replacement” on page 10.

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.

ABOUT YOUR WATER HEATER

TO TURN OFF THE WATER HEATER

If it is necessary to turn off the water heater:

Switch off the electrical supply at the isolating switch to the water heater(s).

Close the cold water isolation valve on the cold water line to the water heater(s) to shut down the entire

system, or;

Close the isolation valves on the cold and hot water branches to shut down an individual water heater in

a bank.

TO TURN ON THE WATER HEATER

Open the isolation valves fully on the cold and hot water branches to the water heater(s) installed in a

bank.

Open the cold water isolation valve on the cold water line to the water heater(s). Air will be forced out of

the taps.

Switch on the electrical supply at the isolating switch to the water heater(s).

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

Installation requirements are shown on pages 14 to 19. 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 to 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 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 WATER HEATER LAST?

The water heater is supported by a manufacturer’s warranty (refer to page 31). 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 5.

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 years.

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 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).

Check the electric heating units for excessive calcium build-up or corrosion and replace if necessary.

Drain and flush the water heater 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 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.

MAINTENANCE REQUIREMENTS

TEMPERATURE PRESSURE RELIEF VALVE

This valve is near the top of the water heater 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 13).

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.

DANGER: Failure to do this may result in the water heater

cylinder failing, or under certain circumstances, exploding.

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 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, 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.

water

heater

drain

line

lift until water

flows from the

drain line –

lower gently

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 heating unit.

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 9 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 anodes 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

(60)

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

ANODE INSPECTION AND REPLACEMENT

The anode installed in your 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 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

electric water heater 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 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.

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 copper sheathed heating unit. A corrosion resistant heating unit must be used for the Rheem

warranty to apply to the heating unit.

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 standard watts density

heating unit. A low watts density heating unit must be used for the Rheem warranty to apply to the heating

unit.

Water which is scaling may be treated with a water softening device to reduce the saturation index of the

water.

Contact Rheem Service or their nearest Accredited Service Agent if a replacement heating unit is required.

Refer to the Saturation Index chart on page 11.

Refer to the cold water connection detail on page 20 for the position of the expansion control valve.

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