Rheem 311 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

311, 314, 811 Series

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.

CONTENTS

HOUSEHOLDER –We recommend you read pages 4 to 20.

The other pages are intended for the installer

but may be of interest.

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

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

Water Supplies...........................................................................14

Save A Service Call ...................................................................18

Installation..................................................................................21

Connections –Plumbing ..........................................................30

Commissioning..........................................................................34

Lighting The Water Heater ........................................................37

Draining The Water Heater .......................................................40

Warranty .....................................................................................41

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 model you have chosen is suitable

for outdoor installation only. The model is either a 311 series

Rheemglas®, 314 series RheemPlus™or 811 series

Optima™water heater. Optima models have an extended

manufacturer‟s warranty (refer to the warranty on page 41).

Water is stored in a vitreous enamel lined steel cylinder and

heated by a gas burner located under the cylinder. The heat

produced by the burner is transferred to the water through the

base of the cylinder and through the wall of a flue pipe which

passes through the centre of the cylinder. A flue baffle in this

flue ensures the efficiency of the water heater is correct. The

gas supply to the burner is controlled by the thermostat so the

water is heated to a constant temperature.

Automatic safety controls are fitted to the water heater to

provide safe and efficient operation.

HOW HOT SHOULD THE WATER BE?

The water heater features a user adjustable

thermostat, which allows you to choose the most

suitable temperature for your hot water needs.

Refer to “Temperature Adjustment” on page 5.

A RheemPlus water heater is temperature limited to

deliver water not exceeding 50°C.

To meet the requirements of the National Plumbing

Standard the temperature of the stored water must

not be below 60°C.

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 operating 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.

minimum

recommended

stored water

temperature

Rheemglas and

Optima maximum

thermostat

setting

RheemPlus

maximum

delivery

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 a Rheemglas or Optima 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.

A RheemPlus water heater will not deliver temperatures exceeding 50°C, in

accordance with AS 3498. There is no statutory requirement to fit a

temperature limiting device if this water heater is installed in other than an early

childhood centre, school, nursing home or a facility for young, aged, sick or

disabled people.

TEMPERATURE ADJUSTMENT

The temperature adjusting dial is on the gas

valve, located behind the access cover on the

lower front of the water heater. A setting of „6‟

will normally maintain the water temperature

at about 60°C. Each number represents a

temperature difference of approximately 6°C.

To increase the water temperature to 65°C, turn the gas control knob

anticlockwise to a setting of „7‟. Refer to “Hotter Water Increases the Risk of

Scald Injury” on page 5.

A RheemPlus water heater is temperature limited to 50°C at the hot water

outlet. The setting of „7‟ should be used for a RheemPlus model to assist in the

specified operation of the temperature limiting valve. Increasing the thermostat

setting will not increase the outlet temperature but will provide more hot water

capacity.

PIEZO IGNITION

The “Piezo” push button igniter makes lighting the pilot

flame of your water heater very easy. Simply follow the

instructions on the label attached to the back of the access

door. There is no need for matches to light the water

heater.

PILOT IGNITER

A permanent pilot flame burns to ignite the main burner

automatically. Heat from the pilot is absorbed by the water.

ABOUT YOUR WATER HEATER

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.

SAFETY

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.

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.

Do not store flammable or

combustible materials near the water

heater. Flammable liquids (such as

petrol), newspapers and similar articles

must be kept well away from the water

heater and the flue terminal.

Do not use aerosols, stain removers

and household chemicals near the

water heater whilst it is working. Gases

from some aerosol sprays, stain

removers and household chemicals

become corrosive when drawn into a

flame.

Do not store swimming pool chemicals, household cleaners, etc., near

the water heater.

Do not place anything on top of the water heater or in contact with the flue

terminal. Ensure the flue terminal is not obstructed in any way at any time.

Do not use Propane / Butane gas mixtures in a Propane model. A Propane

model is designed to operate on Propane only. The use of

Propane / Butane mixture, such as automotive LPG fuel, in a Propane

model is unsafe and can cause damage to the water heater.

ABOUT YOUR WATER HEATER

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 23, a pressure limiting valve must be fitted. The

supply pressure should be greater than 350 kPa for true mains pressure

operation to be achieved.

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 and to “Anode

Inspection and Replacement” on page 15.

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.

TO TURN OFF THE WATER HEATER

If it is necessary to turn off the water heater:

Shut down the gas control (refer to “Close Down Procedure” on page 39).

Close the gas isolation valve at the inlet to the gas control.

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 at the inlet to the water heater.

Open the gas isolation valve fully at the inlet to the gas control.

Light the water heater (refer to “Lighting the Water Heater” on page 37).

GOING ON HOLIDAYS

If you are going on holiday for more than a few days the thermostat can be set

to the “” (pilot) position to conserve energy (refer to point 1 of “Close Down

Procedure” on page 39). If it is necessary to turn off the water heater, refer to

“To Turn Off The Water Heater” on page 7.

ABOUT YOUR WATER HEATER

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

Installation requirements are shown on pages 21 to 28. 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 5601 or AS/NZS 5601.1,

as applicable under local regulations, and all local codes and regulatory

authority requirements.

In New Zealand, the installation must also conform with NZS 5261, as

applicable under local regulations, and 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 14.

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 14 to 17.

HOW LONG WILL THE WATER HEATER LAST?

The water heater is supported by a manufacturer‟s warranty (refer to page 41).

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 7.

REGULAR CARE

ANNUAL SERVICE

For safe and efficient operation, it is recommended an annual 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 annual service and routine replacement of any components, if

required, 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 annual service includes the following actions:

Check the operation of the temperature limiting valve (RheemPlus model)

Inspect and flush the temperature pressure relief valve.

Inspect and flush the expansion control valve (if fitted).

Check and if necessary adjust the inlet gas pressure.

Check the piezo igniter, gas control and thermocouple.

Check the operation of and clean the pilot light and main burner.

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. Hot water may not be available for a while.

REGULAR CARE

MAJOR FIVE YEAR SERVICE

It is recommended a major five 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 year 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 limiting valve (RheemPlus model)

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 15).

Check and if necessary adjust the inlet gas pressure.

Check the piezo igniter, gas control and thermocouple.

Check the operation of and clean the pilot light and main burner.

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. Hot water may not be available for a while.

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