Rheem Gas Domestic Indoor Water Heater Instruction Manual

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 Indoor
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.
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.

3
CONTENTS
HOUSEHOLDER –We recommend you read pages 4 to 19.
The other pages are intended for the installer
but may be of interest.
About Your Water Heater............................................................4
Regular Care ................................................................................9
Water Supplies...........................................................................13
Save A Service Call ...................................................................17
Installation..................................................................................20
Connections –Plumbing ..........................................................29
Commissioning..........................................................................33
Lighting The Water Heater ........................................................34
Draining The Water Heater .......................................................37
Warranty .....................................................................................38

4
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 indoor installation only.
The model is a 300 series Rheemglas®water
heater.
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 personally
choose the most suitable temperature for your
hot water needs. Refer to “Temperature
Adjustment” on page 5.
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.
maximum thermostat
setting
maximum
recommended supply
temperature to
bathrooms and
ensuites
minimum
recommended stored
water temperature

ABOUT YOUR WATER HEATER
5
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 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.
TEMPERATURE ADJUSTMENT
The temperature adjusting dial is on the
gas valve, located at 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.
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 front of the water
heater. 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.