Rheem 874, 876, 824, 826, T26 User Manual
Owner’s Guide
and
Installation Instructions
Continuous Flow
Gas Water Heater
874, 876 series
824, 826, T26 models
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
Warning: Upon completion of the installation and commissioning of the water heater, leave this guide
with the householder or a 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.
PATENTS
This water heater may be protected by one or more patents or registered designs in the name of
Rheem Australia Pty Ltd, Rheem New Zealand Limited or Paloma Co., Ltd.
Rheem Australia Pty Ltd and Rheem New Zealand Limited are the suppliers of the Rheem range of continuous flow gas
water heaters, manufactured by Paloma Co., Ltd., a world leader in water heater technology and manufacture.
®
Registered trademark of Rheem Australia Pty Ltd., or Rheem New Zealand Limited.
No liability can be accepted for any consequences, which may arise as a result of its application.
™ Trademark of Rheem Australia Pty Ltd., or Rheem New Zealand Limited.
Note: Every care has been taken to ensure accuracy in preparation of this publication.
TRADEMARKS
CONTENTS
HOUSEHOLDER - We recommend you read pages 4 to 44.
The other pages are intended for the installer but may be of interest.
About Your Water Heater ............................................................................................................ 4
Temperature Control ................................................................................................................. 11
Temperature Control – Standard ............................................................................................. 12
Temperature Control – Deluxe ................................................................................................. 22
Water Supplies ........................................................................................................................... 41
Save A Service Call ................................................................................................................... 42
Installation – Water Heater ....................................................................................................... 45
Connections – Plumbing .......................................................................................................... 58
Connections – Electrical ........................................................................................................... 59
Ez-Link System Dual Installation ............................................................................................. 61
Installation – Controllers .......................................................................................................... 66
Commissioning .......................................................................................................................... 73
Draining The Water Heater ....................................................................................................... 82
Warranty ..................................................................................................................................... 83
This Owner’s Guide and Installation Instructions is shared for the Australian and New Zealand markets.
Where the content of this document is specific to either market, it is marked with either
AU for Australian specific content or NZ for New Zealand specific content.
The 874826 models in natural gas and the 874824 models in both natural gas and ULPG fuel types are the
only models sold in New Zealand. References to other models do not apply to the New Zealand market.
The 876 series water heater is not sold in New Zealand.
References to this model do not apply to the New Zealand market.
3
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® continuous flow gas water heater model you have chosen is for outdoor installation only.
The water heater has a maximum preset outlet temperature setting of:
874 series 75°C
876 series 50°C
Notes:
The 876 series water heater is marked “THIS APPLIANCE DELIVERS WATER NOT EXCEEDING 50°C
IN ACCORDANCE WITH AS 3498” on the front panel. This model;
must not be installed as an in-series gas booster to a solar water
heater, as water temperature greater than 50°C can be delivered
from the water heater contravening its compliance to AS 3498.
The 874 series water heater may be installed as an in-series gas
booster to a solar water heater. For information relating to the function
and operation of the solar water heater, refer to the Owner’s Guide and
Installation Instructions supplied with the solar water heater.
When installed as an in-series gas booster to a solar water heater, the
874 series water heater:
can deliver water at temperatures up to 70°C to 80°C for a Premier
Loline and Loline pumped system and a Hiline thermosiphon
system and possibly higher temperatures from a Premier Hiline
thermosiphon system.
during periods of low solar energy gain, will boost the water
temperature automatically to its preset outlet temperature setting.
MAINS PRESSURE
The water heater is designed for direct connection to the mains water supply. If the mains supply pressure in
your area exceeds that shown on page 48, a pressure limiting valve must be fitted. The supply pressure should
be greater than 120 kPa for the rated flow and performance to be achieved.
WATER HEATER OPERATION
The water heater operates automatically, heating water as it passes through the water heater. When a hot tap
is opened, the gas burners ignite to provide immediate heating of the water. The heat produced by the burner
is transferred to the water through the heat exchanger. The water is heated to a constant temperature by the
automatic adjustment of the gas supply to the burner to suit the water flow rate (refer to “Temperature Control”
on pages 11 to 40). The gas burners extinguish when the hot tap is closed.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
REDUCED HOT WATER FLOW WHEN HEAT EXCHANGER IS COLD
At a cold start-up, i.e. when the water heater has not operated for some time (which is most often first thing in
the morning), the initial flow of hot water may be reduced for a period of 5-10 seconds while the heat exchanger
warms up. This is both an energy and water saving feature of this water heater. Once the heat exchanger
has warmed up the hot water flow will increase and remain at normal flow levels. This feature will only occur
at a cold start-up and not when the heat exchanger is already warm from a recent use of hot water.
4
ABOUT YOUR WATER HEATER
maximum recommended supply
temperature to bathrooms and ensuites.
maximum Bathroom controller
temperature setting 874 series.
maximum Kitchen and Bathroom
controller temperature setting
876 series.
maximum Kitchen controller
temperature setting 874 series.
maximum recommended supply
temperature to bathrooms and ensuites.
maximum Bathroom controller
temperature setting 874 series
minimum Kitchen and Bathroom
controller temperature setting
maximum Kitchen controller
temperature setting 874 series
minimum Kitchen and Bathroom
controller temperature setting
GAS BOOSTING FOR A SOLAR WATER HEATER
Water stored in the solar storage tank passes through the in-series gas booster when a hot tap is opened. The
in-series gas booster is for heating water at times of low solar energy gain, such as during cloudy or rainy
weather, or during colder months.
Solar heated water can reach temperatures up to 70°C to 80°C for a Premier Loline and Loline pumped system
and a Hiline thermosiphon system and possibly higher for a Premier Hiline thermosiphon system. The in-series
gas booster operates automatically. When the solar heated water temperature is 58°C or higher, the flow
passes through the in-series gas booster without boosting. When the solar heated water temperature is below
58°C, the in-series gas booster heats the water to its preset outlet temperature setting.
HOW HOT SHOULD THE WATER BE?
The water heater may be installed with one or more user adjustable temperature controllers, which allow you
to choose the most suitable temperature for your hot water needs (refer to “Temperature Control” on page 11).
If a controller is not installed, the water heater heats the water to the preset outlet temperature setting. The
factory preset outlet temperature setting is:
874 series 60°C – AU 55°C – NZ
876 series 50°C
Note: The preset outlet temperature setting of this water heater cannot be adjusted by the householder. The
setting can only be adjusted by the installer, Rheem Service or their nearest Accredited Service Agent / Centre.
Australia New Zealand
Note: Australian Standard AS 3498 requires that a water heater provides the means to inhibit the growth of
Legionella bacteria in potable water. When this water heater is used as an in-series booster for a solar water
heater it can satisfy this AS 3498 requirement provided it is energised, the booster preset outlet temperature
setting is 70°C, and that a remote temperature controller is not used.
Warning: Temperature controllers must not be fitted to this water heater (874 series) if it is installed as an
in-series gas booster with a solar water heater system because water at a temperature much higher than the
controller setting can be delivered. If a solar water heater is installed to an existing water heater installation,
then all controllers must be disconnected and removed.
If this water heater is installed as part of a solar water heater system, the system can deliver water at
temperatures from 58°C up to 80°C and possibly higher depending upon the model of solar water heater
installed.
5
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 be required by regulations that an approved temperature limiting device be fitted
into the hot water piping to the bathroom and ensuite when an 874 series water heater is installed. This will
keep the water temperature below 50°C – AU or 55°C – NZ at the bathroom and ensuite. The risk of scald
injury will be reduced and if no controllers are installed and the preset outlet temperature setting has not been
adjusted below 55°C or if a Kitchen controller is installed, still allow hotter water to the kitchen and laundry.
An 876 series water heater will not deliver temperatures exceeding 50°C, in accordance with AS 3498. There
is no need to fit a temperature limiting device to satisfy the requirements of AS/NZS 3500.4, if an 876 series
water heater is installed in an application where 50°C is the maximum permissible hot water temperature at
the outlet of a sanitary fixture used primarily for personal hygiene purposes.
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.
The water heater uses 240 Volt AC electrical power for operation of the control systems and the combustion
fan. The removal of the front panel will expose 240 V wiring. It must only be removed by a qualified person.
The power lead from the water heater must be plugged into a weatherproof electrical outlet. Take care not to
touch the power plug with wet hands.
SAFETY
This water heater is supplied with temperature sensors, a FlameSafe® protection system and a 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.
If the power supply cord or plug is damaged, it must be replaced by a qualified person in order to avoid a
hazard. The power supply cord and plug must be replaced with a genuine replacement part available from
Rheem. Phone Rheem Service or their nearest Accredited Service Agent / Centre 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.
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.
Note: LPG models sold in New Zealand are designed to operate on the Propane / Butane mixture supplied
in New Zealand. An LPG model has an LFZ suffix in its model number.
6
ABOUT YOUR WATER HEATER
PRECAUTIONS
The water heater must be maintained in accordance with the Owner’s Guide and Installation Instructions. Refer
to “General Maintenance” on page 7, “Minor Maintenance Every Six Months” on page 7 and “Major Service
Every Five Years” on page 7.
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 backup redundancy into your hot water supply system.
GENERAL MAINTENANCE
The jacket of the water heater can be cleaned with a soft cloth and warm mild soapy water. Under no
circumstances should abrasive materials or powders be used.
The area around the water heater can be sprayed with insecticide to rid the area of insects. Insects encroaching
into or nesting in the water heater can interfere with the operation of the water heater and also damage
components.
MINOR MAINTENANCE EVERY SIX MONTHS
It is recommended minor maintenance be performed every six (6) months. Minor maintenance can be
performed by the dwelling occupant.
The minor maintenance includes:
Inspect around the air inlet, flue terminal and the water heater in general for plant growth.
Trim back any shrubs, bushes or other plants which have encroached around the water heater.
Plant growth across the air inlet and flue terminal can interfere with the performance of the water
heater.
Inspect around the water heater for insect infestations, such as ants.
Spray insecticide around the water heater if necessary to rid the area of insects. Do not spray the
surface or into the air inlet or flue terminal of the water heater.
Insects encroaching into or nesting in the water heater can interfere with the operation of the water
heater and also damage components.
MAJOR SERVICE EVERY FIVE YEARS
For safe and efficient operation, it is recommended a major service be conducted on the water heater every
five (5) years.
Warning: Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem
Service or their nearest Accredited Service Agent / Centre.
Note: The major 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 major service includes the following actions:
Check and if necessary adjust the gas pressure.
Check the operation of and clean the burner.
Check and clean the line strainer.
Visually check the unit for any potential problems.
Inspect all connections.
7
ABOUT YOUR WATER HEATER
CIRCULATED HOT WATER FLOW AND RETURN SYSTEM
A Rheem 874 series continuous flow water heater can be installed as part of a circulated hot water flow and
return system in a building. Refer to “Circulated Hot Water Flow and Return System” on page 51 for further
information and notes on this type of installation.
GOING ON HOLIDAYS
If you are going on holidays, it is not necessary to turn the water heater off. If it is necessary to turn off the
water heater, refer to “To Turn Off The Water Heater” on page 8.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater:
Turn off the controllers(s) (if fitted) by pressing the on / off ( ) button.
The on / off operating light will go out and the priority light, if it is on, will go out.
Switch off the electrical supply at the power outlet to the water heater if there is no risk of freezing
conditions occurring (refer to note below).
Close the gas isolation valve at the inlet to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
Note: If there is a risk of freezing conditions, the electrical supply to the water heater should not be switched
off unless the water heater is drained, otherwise damage could result (refer to “Frost Protection” on page 9
and “Draining the Water Heater” on page 9).
TO TURN ON THE WATER HEATER
Screw in the drain plugs at the cold water inlet and hot water outlet of the water heater if the water heater
has been drained.
Open all of the hot taps in the house (don’t forget the shower).
Open the cold water isolation valve fully at the inlet to the water heater.
Air will be forced out of the taps.
Close each tap as water flows freely from it.
Open the gas isolation valve fully at the inlet to the water heater.
Plug in the power supply cord at the power outlet.
Switch on the electrical supply at the power outlet to the water heater.
Turn on a controller, if one is fitted, by pressing the on / off ( ) button.
The on / off operating light and the priority light will both glow.
The water heater will operate automatically when you open a hot tap.
8
ABOUT YOUR WATER HEATER
FROST PROTECTION
The water heater has a frost protection system. The frost protection system will protect the water heater from
damage, by preventing ice forming in the waterways of the water heater, in the event of freezing conditions
occurring.
Notes:
The frost protection system will be rendered inoperable if electrical power is not available at the water
heater. Damage caused by freezing due to the unavailability of power at the water heater is not covered
by the Rheem warranty (refer to “Terms of the Rheem Warranty” on page 83).
If it is necessary to switch the power off to the water heater and there is a risk of freezing, then it is
necessary to drain the water heater (refer to “Draining the Water Heater” on page 9).
Pipe work to and from the water heater must be adequately insulated to prevent freezing.
The water heater is not suitable for installation in areas where the ambient temperature falls below -20°C
(including wind chill factor).
Refer to “Terms of the Rheem Warranty” on page 83.
DRAINING THE WATER HEATER
Turn off the water heater (refer to “Turn Off The Water Heater” on page 8).
Open a hot tap (preferably the shower outlet).
Unscrew the two drain plugs, one each at the cold water inlet and hot water outlet, on the underside of
the water heater.
Water will drain from the water heater.
When water stops flowing from the water heater, close the hot tap.
Note: It is recommended not to screw the drain plugs back in, until the water heater is to be turned on again.
9
ABOUT YOUR WATER HEATER
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 45 to 57. 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, and either AS 5601 or AS/NZS 5601.1 as applicable under
local regulations, and all local codes and regulatory authority requirements.
The Gas installations Standards AS 5601 and AS/NZS 5601.1 place limitations on the location of a gas
water heater within a covered area. Refer to “Installation within a Covered Area” on page 47.
In New Zealand, the installation must also conform to Clause G12 of the New Zealand Building Code.
Warning: Temperature controllers must not be fitted to this water heater (874 series) if it is installed as an
in-series gas booster with a solar water heater system because water at a temperature much higher than the
controller setting can be delivered. If a solar water heater is installed to an existing water heater installation,
then all controllers must be disconnected and removed.
The pipe work between the solar storage tank (if one is installed) and the in-series gas booster has a minimum
recommended pipe size of DN20, MUST BE of copper and be fully insulated in accordance with the
requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed. The
insulation must be fitted up to the connections on both the solar storage tank and the in-series gas booster.
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 41.
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 page 41.
HOW LONG WILL THE WATER HEATER LAST?
The water heater is supported by a manufacturer’s warranty (refer to page 83). 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.
10
TEMPERATURE CONTROL
CONTROLLERS
The Rheem 874 and 876 series can be installed with Rheem controllers to enable the user to control the
temperature of the delivered water from the outlet of the water heater. There are two families of Rheem
controllers suitable for installation with this water heater. These are the standard controllers and the Deluxe
controllers.
Standard Controllers
There are three types of standard controller. They are the Kitchen controller (Rheem AU - Part 299850, NZ Part A299850), Bathroom1 controller (Rheem AU - Part 299851, NZ - Part A299851) and the Bathroom2
controller (Rheem AU - Part 299852, NZ - Part A299852). These part numbers include the controller cable
supplied with the controller.
The standard controllers are identified by a ‘K’ (Kitchen controller), ‘B1’ (Bathroom1 controller) or ‘B2’
(Bathroom2 controller) located on the front bottom left hand corner of the standard controller.
Deluxe Controllers
There are three types of Deluxe controller. They are the Kitchen Deluxe controller (Rheem AU - Part 299858,
NZ - Part A299861), Bathroom1 Deluxe controller (Rheem AU - Part 299859, NZ - Part A299862) and the
Bathroom2 Deluxe controller (Rheem AU - Part 299860, NZ - Part A299863). These part numbers include the
controller cable supplied with the controller.
The Deluxe controllers are identified by a ‘K’ (Kitchen Deluxe controller), ‘B1’ (Bathroom1 Deluxe controller)
or ‘B2’ (Bathroom2 Deluxe controller), located under the front panel, to the bottom left hand corner adjacent to
the BATH FILL VOLUME label.
The Deluxe controllers offer additional functions to the standard controllers. These are:
An assistance call function, which provides a voice prompt when pressed and will sound on all controllers.
This is useful should a family member require assistance when in the bathroom.
A Bath Fill function, which is designed to allow the water heater to deliver a selected volume of water at a
selected temperature.
Bath filling takes place when the hot tap is opened. When the set volume has been delivered, the water
flow from the water heater ceases. Refer to “Bath-Fill Function” on page 32.
Note: The bath level should be monitored periodically while this function is in use to avoid the possibility
of the bath overflowing. The Bath Fill function should also be used with caution until you are familiar with
its operation.
Warning: Baths should not be left unattended whenever young children are present.
Warning: Temperature controllers must not be fitted to this water heater (874 series) if it is installed as an
in-series gas booster with a solar water heater system because water at a temperature much higher than the
controller setting can be delivered. If a solar water heater is installed to an existing water heater installation,
then all controllers must be disconnected and removed.
Notes:
Where more than one controller is installed, the second or third controller must be of the same family.
A standard controller can only be installed with another standard controller(s) and a Deluxe controller can
only be installed with another Deluxe controller(s). A standard controller(s) and a Deluxe controller(s)
cannot be connected to the same water heater.
One, two or three controllers can be installed. Only one of each type of controller can be connected to the
water heater. Therefore, a maximum of three controllers only can be connected to each water heater.
A Bathroom2 controller can only be installed if a Bathroom1 controller is installed and a Bathroom2 Deluxe
controller can only be installed if a Bathroom1 Deluxe controller is installed.
Other manufacturers’ controllers are not suitable to and cannot be installed with this water heater.
11
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
TEMPERATURE CONTROL – STANDARD
STANDARD CONTROLLER FUNCTIONS
If one or more controllers are installed, at least one must be on for the water heater to operate. If all controllers
are off, the water heater will only deliver cold water.
on / off ( ) button – This button must be pressed once to turn on the controller.
A controller cannot be turned on if water is flowing from a hot tap.
To turn off a controller, press the on / off ( ) button once. The light will go out.
A controller can be turned off whilst water is flowing.
on / off operating light – The on / off operating light on the on / off ( ) button will glow when the controller is
turned on.
The light will go out when the controller is turned off.
priority light – This light will glow on a controller when that controller has priority.
The Bathroom controller(s), if they are turned on, have priority over the Kitchen
controller.
Priority means that controller has control of the water heater temperature setting.
The water temperature setting can only be adjusted by the controller that has priority.
in use light – This light will glow on all controllers, whether they are on or off, when hot water is
flowing, regardless of which controller has priority.
display panel – The current temperature setting is displayed on all controllers (whether hot water is
flowing or not), when any controller is on.
If all controllers are off, then the display remains blank.
The water volume can also be displayed on the Kitchen controller. The x 10L symbol
glows when the water volume is displayed.
up () button – The up () button increases the temperature and water volume settings.
Refer to “Temperature Adjustment – Standard Controller” on page 15 and “Water
Volume Function” on page 20.
down () button – The down () button decreases the temperature and water volume settings.
Refer to “Temperature Adjustment – Standard Controller” on page 15 and “Water
Volume Function” on page 20.
water volume ( ) button (Kitchen controller only) – This feature enables an alarm to sound when a set
volume of water has flowed through the water heater.
Refer to “Water Volume Function” on page 20.
water volume operating light – The water volume operating light on the water volume ( ) button will glow
when the water volume ( ) button is pressed and the water volume function is turned
on.
The light will go out when the water volume ( ) button is pressed and the
water volume function is turned off.
water volume symbol – The x 10L symbol below the display panel glows when the water volume function is
turned on and the water volume is displayed.
12
STANDARD CONTROLLER
Rheem
X 10L
°C
X 10L
°C
in use light
priority light
water volume
operating light
display panel
water volume
symbol
water volume
button
controller type
B1 = Bathroom1
B2 = Bathroom2
up ()
button
down ()
button
on / off
operating light
on / off
button
TEMPERATURE CONTROL – STANDARD
K = Kitchen
Note: water volume ( ) button, water volume operating light and water volume symbol are on the Kitchen
controller only.
SILENCING A CONTROLLER – STANDARD
The controller emits a sound whenever a button is pressed. This sound can be turned off to provide silent
operation.
To turn off the sound:
Press the on / off ( ) button, to deactivate the controller (on / off operating light is off).
Press and hold the up () button.
Press the on / off ( ) button, whilst the up () button is pressed.
The sound for the controller is deactivated. Repeat this procedure on the other controllers if you wish to
deactivate their sound. To restore the sound, repeat this procedure.
13
TEMPERATURE CONTROL – STANDARD
Temperature settings
37
38
39
40
41
42
43
44
45
46
48
50
55
60
warm
average hot shower
hot very hot
TEMPERATURE SETTINGS – STANDARD CONTROLLER
The temperature settings of each type of controller are:
Bathroom1 & 2 37°C to 46°C (in 1°C increments), 48°C, 50°C
Kitchen 37°C to 46°C (in 1°C increments), 48°C, 50°C*, 55°C**, 60°C
* limited to 50°C on an 876 series model.
** NZ – limited to 55°C.
The installation of a Bathroom controller(s) only (i.e. no Kitchen controller) limits the temperature setting of the
water heater to a maximum of:
874 series 50°C
876 series 50°C
regardless of the preset outlet temperature setting of the water heater.
The installation of a Kitchen controller will allow a maximum temperature setting of:
874 series 60°C – AU 55°C – NZ
876 series 50°C
regardless of the preset outlet temperature setting of the water heater.
If there is no controller installed, the water heater defaults to the preset outlet temperature setting. This may
be up to:
874 series 75°C
876 series 50°C
Refer to “How Hot Should The Water Be?” on page 5.
On a building fitted with a temperature limiting device such as a tempering valve and where an 874 series
water heater is installed without a separate untempered hot water line to the kitchen, laundry or other nonablution area, although the Kitchen controller will be able to display temperatures above 50°C and the water
leaving the water heater will be at the set temperature, the maximum water temperature which can be delivered
to the hot water outlets in these locations is determined by the temperature setting of the temperature limiting
device. This is usually 50°C.
On a building fitted with a temperature limiting device set to 50°C, to enable the delivery of water temperatures
above 50°C to the kitchen, laundry or other non-ablution area, separate untempered pipe work must be
installed from the water heater to the hot water outlets in these locations.
14
TEMPERATURE CONTROL – STANDARD
Kitchen
Bathroom
874 series
60°C – AU, 55°C – NZ
50°C
876 series
50°C
50°C
TEMPERATURE ADJUSTMENT – STANDARD CONTROLLER
A controller must be on and have priority to be able to adjust the temperature setting.
The temperature adjustment is made by pressing the up () button or down () button.
The maximum temperature setting for the controllers are:
Each press of the up () button will increase the temperature setting by one increment.
Pressing and holding the up () button will scroll the temperature setting up to a maximum 43°C if there
is hot water flowing or 45°C if there is no hot water flowing.
From the 45°C setting, the up () button must be pressed once for each increase in temperature
increment.
The temperature setting cannot be increased above 43°C whilst hot water is flowing.
The minimum temperature setting for each type of controller is 37°C.
Each press of the down () button will decrease the temperature setting by one temperature increment.
Pressing and holding the down () button will scroll down the temperature setting.
The temperature setting can be decreased from any temperature setting whether the hot water is flowing
or not.
15
TEMPERATURE CONTROL – STANDARD
Rheem
X 10L
°C
KITCHEN CONTROLLER – STANDARD
The Kitchen controller allows the user to select the temperature setting for the hot water to be used in the
kitchen and laundry. It has a minimum temperature setting of 37°C and a maximum temperature setting of:
874 series 60°C – AU 55°C – NZ
876 series 50°C
The Kitchen controller does not have priority if a Bathroom controller is on.
Notes on the Kitchen controller:
The controller cannot be turned on whilst a hot tap is open.
The Kitchen controller must be on and have priority in order to adjust the temperature setting on the
Kitchen controller.
The Bathroom controller(s) can be turned off from the Kitchen controller.
Press and hold the on / off ( ) button on the Kitchen controller for three seconds.
This turns off all the controllers and the displays go blank.
If hot water is flowing from a hot tap, it will go cold.
Kitchen Controller
16
TEMPERATURE CONTROL – STANDARD
X 10L
50
°C
X 10L
55
°C
X 10L
55
°C
X 10L
55
°C
X 10L
°C
To operate the Kitchen controller:
1. Turn off the Bathroom controller(s)
If a temperature setting is displayed and the priority light is not glowing, it is necessary to turn off the
Bathroom controller(s) to gain priority.
Refer to the notes on the Kitchen controller on page 16.
2. Turn on the Kitchen controller
Press the on / off ( ) button.
The on / off operating light and the priority light will both
glow.
The previous Kitchen controller temperature setting will
be displayed on the temperature display panel.
3. Select the temperature setting
Press the up () button or down () button.
Refer to “Temperature Adjustment – Standard
Controller” on page 15.
The selected temperature setting will be displayed on all
controllers.
4. Open the hot tap.
5. Close the hot tap.
6. Turn off the Kitchen controller
The in use light will glow on all controllers.
The in use light will go out on all controllers, if no other hot
tap is open.
Press the on / off ( ) button.
The priority light and on / off operating light will go out
and the temperature display will go blank.
Important: Turn off the Kitchen controller after hot water usage
is finished in the kitchen and / or laundry. Refer to Important note
for Bathroom controllers on page 18.
17
TEMPERATURE CONTROL – STANDARD
Bathroom Controller
Rheem
°C
BATHROOM CONTROLLERS – STANDARD
The Bathroom controller(s) allows the user to select the temperature setting for the hot water to be used in the
bathroom. They have a minimum temperature setting of 37°C and a maximum temperature setting of:
874 series 50°C
876 series 50°C
The Bathroom controllers operate in tandem. Whenever an operation is selected on one Bathroom controller,
it is also set on the other Bathroom controller. The Bathroom controllers automatically have priority if they are
on.
Important: It is important to turn on the Bathroom controller before opening a hot tap in the bathroom (priority
is automatically gained). If the Bathroom controller is not on and the Kitchen controller is on (has priority), then
it is possible to receive water at a temperature higher than expected from a hot tap in the bathroom. This
temperature could be up to:
874 series 50°C if a temperature limiting device is installed in the hot pipe to the bathroom
or up to 60°C – AU or 55°C – NZ if a temperature limiting device is not
installed.
876 series 50°C
Notes on the Bathroom controllers:
The controller cannot be turned on whilst a hot tap is open.
When a Bathroom controller is turned on, it gains priority from the Kitchen controller.
The Bathroom controller must be on in order to adjust the temperature setting on the Bathroom controller.
The Kitchen controller can be turned off from a Bathroom controller.
Press and hold the on / off ( ) button on a Bathroom controller for three seconds.
This turns off all the controllers and the displays go blank.
If hot water is flowing from a hot tap, it will go cold.
Warning: It is advised to leave the Bathroom controller on after hot water usage is finished in the
bathroom. Turning off a controller in one bathroom will also turn off the controller in the other
bathroom. The Kitchen controller will gain priority if it is on and the temperature setting can be up to:
874 series 60°C – AU 55°C – NZ
876 series 50°C
If a hot tap is open in another bathroom, the water
will be delivered at:
For an 874 series model – up to 50°C if a
temperature limiting device is installed in the hot
pipe to the bathroom or up to 60°C – AU or 55°C
– NZ if a temperature limiting device is not
installed.
For an 876 series model – up to 50°C.
18
TEMPERATURE CONTROL – STANDARD
40
°C
42
°C
42
°C
42
°C
To operate a Bathroom controller:
1. Turn off the Kitchen controller
If a temperature setting is displayed and the priority light is not glowing, it is advised to turn off the
Kitchen controller.
Refer to the notes on the Bathroom controllers on page 18.
2. Turn on the Bathroom controller
Press the on / off ( ) button.
The on / off operating light and the priority light will both
glow.
The temperature setting of 40°C will be displayed on the
temperature display panel.
3. Select the temperature setting
Press the up () button or down () button.
Refer to “Temperature Adjustment – Standard Controller”
on page 15.
The selected temperature setting will be displayed on all
controllers.
4. Open the hot tap
The in use light will glow on all controllers.
5. Close the hot tap
The in use light will go out on all controllers, if no other hot tap
is open.
It is advised not to turn off the Bathroom controller(s).
Refer to the warning in the notes on page 18.
19
TEMPERATURE CONTROL – STANDARD
X 10L
°C
18
°C
X 10L
15
°C
X 10L
4 2
°C
42
°C
WATER VOLUME FUNCTION
The water volume function is designed to warn by an alarm (beeping sound), that a certain volume of water
has been delivered from the water heater. It does not stop either the flow of or the heating of water. This
function is useful if a bath is being filled, or measuring the water consumed by the use of a shower.
The water volume function can only be set by the Kitchen controller. Refer to the notes on the water volume
function on page 21.
To operate the water volume alarm:
1. Turn on the water volume function
Press the water volume ( ) button.
The water volume operating light will glow.
The current set water volume (in litres divided by 10) will
be displayed and the x 10L indicator will also glow.
E.g. the factory preset water volume of 180 litres is shown
as 18 x 10L.
2. Adjust the water volume setting (if necessary)
To adjust the water volume setting, press the
up () button to increase the water volume or the
down () button to decrease the water volume.
Each press of the up () button or down () button will
change the water volume setting by 10 litres.
Pressing the up () button or down () button
continuously will scroll the water volume setting.
Fifteen seconds after the water volume has been
selected, the water volume operating light will start to
flash and the selected water volume is set.
The water volume operating light will continue to flash
until the alarm sounds.
A maximum of 500 litres (50 and x 10L displayed) and a
minimum of 10 litres (1 and x 10L displayed) can be set
with the water volume function.
3. Set the water temperature
Turn on the controller for the room where the hot water is
to be used.
Gain priority (if using the Kitchen controller).
Select the temperature setting.
4. Open the hot tap
The in use light will glow on all controllers.
Measurement of the water flow at the water heater will
commence when a hot tap is open and the water volume
operating light is flashing.
The alarm will sound when the set volume of water has passed
through the water heater.
20
5. Turn off the alarm
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
42
°C
42
°C
Press the water volume ( ) button to turn off the alarm.
The water volume operating light goes out and 0 x 10L is
displayed momentarily on the controller.
The temperature setting of the controller with priority is
then displayed.
6. Close the hot tap
If it is a Bathroom controller which is in use and has priority,
then it is advised to leave the controller on.
Refer to the warning in the notes on page 18.
If it is the Kitchen controller which is in use and has priority,
then it is advised to turn the controller off.
Refer to Important note for Bathroom controllers on
page 18.
Notes on the water volume function:
TEMPERATURE CONTROL – STANDARD
The water volume can only be set by the Kitchen controller.
The Kitchen controller does not require priority nor to be on in order to set the water volume function.
The water volume function can be set whilst a hot tap is open.
The water volume alarm will only sound from the Kitchen controller.
The water volume alarm will still sound if the Kitchen controller has been silenced (refer to “Silencing A
Controller” on page 13).
The factory preset water volume is 180 litres.
If a hot tap is not opened for one hour after the new water volume has been set, then the setting will be
automatically cancelled. The water volume resets to the previously set water volume (or the factory preset
water volume if no water volume has previously been set).
To display the remaining water volume while water is being drawn, press the water volume ( ) button.
After a few seconds, the display returns to the temperature setting.
To turn off the water volume function before the alarm sounds, press the water volume ( ) button twice.
The water volume is measured as the water flows through the water heater. Therefore if more than one
hot tap is open, the alarm will respond to the total water volume drawn from all taps and the expected
water volume from the first tap will be decreased.
If the hot tap is closed before the set water volume flows through the water heater and the water volume
( ) button is left on, then the alarm will sound when the remaining water volume is consumed during a
later operation. To prevent the alarm from sounding, press the water volume ( ) button twice to turn it
off.
21
BATH (l)
°C
0
BATH (l)
°C
0
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
TEMPERATURE CONTROL – DELUXE
DELUXE CONTROLLER FUNCTIONS
If one or more Deluxe controllers are installed, at least one must be on or the Bath Fill function activated for
the water heater to operate. If all Deluxe controllers and the Bath Fill function are off, the water heater will only
deliver cold water.
on / off ( ) button – The on / off ( ) button must be pressed once to turn on the Deluxe controller. A Deluxe
controller cannot be turned on if water is flowing from a hot tap.
To turn off a Deluxe controller, press the on / off ( ) button once. A Deluxe controller
can be turned off whilst water is flowing.
on / off operating light – The on / off operating light on the on / off ( ) button will glow when the Deluxe
controller is turned on.
The light will go out when the Deluxe controller is turned off.
PRIORITY light – The PRIORITY light will glow on a Deluxe controller when the controller has priority.
The Bathroom Deluxe controller(s), if they are turned on, have priority over the Kitchen
Deluxe controller.
PRIORITY means that particular Deluxe controller has control of the water heater
temperature setting. The water temperature setting can only be adjusted by a Deluxe
controller that has priority and is displaying the PRIORITY light.
operating light – The operating light will glow on all Deluxe controllers, whether they are on or off, when
hot water is flowing, regardless of which Deluxe controller has priority.
temperature display panel – The current temperature setting is displayed in °C on all Deluxe controllers
(whether hot water is flowing or not), when any Deluxe controller is on. If all Deluxe
controllers are off, the display remains blank.
up () button – The up () button increases the water temperature setting.
Refer to “Temperature Adjustment – Deluxe Controllers” on page 27.
down () button – The down () button decreases the water temperature setting.
Refer to “Temperature Adjustment – Deluxe Controllers” on page 27.
assistance call ( ) button – Pressing this button sounds an alert message on all Deluxe controllers, indicating
that assistance is required in the room from which the assistance call ( ) button was
activated.
speaker – The audio of the voice prompts and chimes is emitted from the speaker.
bath fill ( ) button – The bath fill ( ) button must be pressed once to turn on the Bath Fill function.
When the Bath Fill function is turned on, the last selected bath fill water volume in litres
will be displayed in the bath fill water volume display panel and the last selected bath fill
temperature in °C will be displayed in the temperature display panel.
The bath fill water volume and temperature can be adjusted by using the BATH FILL
VOLUME and BATH FILL TEMPERATURE buttons located behind the hinged panel on
the lower half of the Deluxe controller. Refer to “Bath-Fill Function” on page 32.
To turn off the Bath Fill function, press the bath fill ( ) button.
bath fill operating light – The bath fill operating light on the bath fill ( ) button will glow when the bath fill
( ) button is pressed and the Bath Fill function is turned on.
The light will flash when the Bath Fill function is complete but before the Bath Fill function
has been turned off.
The light will go out when the bath fill ( ) button is pressed and the Bath Fill function
is turned off.
22
TEMPERATURE CONTROL – DELUXE
speaker
PRIORITY
BATH (l)
°C
230
42
Open
hot tap
4.
Adjust
Temperature
3.
Hot Water
1.
Press
PRIORITY
Light on
2.
Bath Fill
1.
2.
Bath
Water
Volume
Bath
Fill
Temp
Set Bath Fill
Water Volume
and Temperature
Open
hot tap
4.
Bath Fill
Bath Fill Button
(Red light flashes)
5.
6.
Close
hot tap
3.
Press Bath
7.
Press Bath
Fill Button
(Red light off)
K
BATH FILL
VOLUME
BATH FILL
TEMPERATURE
BATH FILL
up () button
bath fill
button
assistance call
button
bath fill
operating light
Deluxe controller type
B1 = Bathroom1
B2 = Bathroom2
brief Deluxe controller
operating instructions
Bath Fill function and
Hot Water mode
BATH FILL
down () button
BATH FILL
up () button
on / off
button
on / off
operating light
up ()
button
down ()
button
operating
light
bath fill water volume
display panel
bath fill
indicator light
PRIORITY
light
temperature
display panel
BATH FILL
down () button
bath fill water volume display panel – The selected bath fill water volume is displayed in litres on all Deluxe
controllers.
The selected bath fill water volume is displayed whenever the Bath Fill function is on
(refer to “Bath-Fill Function” on page 32) or when the bath fill water volume is being
adjusted and the Bath Fill function is off.
If the bath fill water volume is being adjusted and the Bath Fill function is off, then the
bath fill water volume display panel goes blank three (3) seconds after a BATH FILL
VOLUME button is last pressed.
At other times, if the Bath Fill function is off, the bath fill water volume display panel
remains blank.
bath fill indicator light – this light in the display panel will glow when the bath fill water volume is displayed.
BATH FILL TEMPERATURE up () button – The up () button increases the bath fill water temperature
setting (refer to “Temperature Adjustment – Deluxe Controllers” on page 27 and to
“Bath-Fill Function” on page 32).
BATH FILL TEMPERATURE down () button – The down () button decreases the bath fill water
temperature setting (refer to “Temperature Adjustment – Deluxe Controllers” on page 27
and to “Bath-Fill Function” on page 32).
BATH FILL VOLUME up () button – The up () button increases the bath fill water volume setting in
increments of 10 litres up to 500 litres. A further setting of 990 litres can be selected.
BATH FILL VOLUME down () button – The down () button decreases the bath fill water volume setting
from 990 litres to 500 litres and in increments of 10 litres from 500 litres down to 10 litres.
DELUXE CONTROLLER
VOLUME
TEMPERATURE
VOLUME
K = Kitchen
Fill Button
(Red light on)
23
completed
(automatic)
TEMPERATURE
TEMPERATURE CONTROL – DELUXE
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
X 10L
°C
BATH (l)
°C
0
VOICE PROMPT AND OPERATING TONE
The Deluxe controllers have a series of voice prompts and operating tones which sound during certain
operations.
The voice prompts and operating tones sound from all Deluxe controllers, regardless of which Deluxe controller
is being operated at the time.
Voice Prompt
The voice prompts are:
When either the up () button or BATH FILL TEMPERATURE up () button is pressed
“hot water temperature has been increased”
When either the down () button or BATH FILL TEMPERATURE down () button is pressed
“hot water temperature has been decreased”
When the BATH FILL VOLUME up () button is pressed
“Caution, bath fill water volume has been increased, bath may overflow”
When the BATH FILL VOLUME down () button is pressed
“bath fill water volume has been decreased”
When the bath fill ( ) button is pressed to turn on the Bath Fill function
“please set bath water volume and bath temperature, then open the hot water tap”
When the set bath fill water volume has been delivered from the water heater during the Bath Fill function
“the bath is ready, please turn off the hot water tap and press the bath fill ( ) button to finish”
When the bath fill ( ) button is pressed to halt the Bath Fill function before it is complete
“bath filling has been stopped, please turn off the hot water tap and press the bath fill ( ) button to
finish”
When the bath fill ( ) button is pressed to turn the Bath Fill function off and the hot tap has not been
turned off
“please ensure the bath hot water tap is turned off”
When the Deluxe controllers have been turned off during the Bath Fill function
“bath filling has been stopped”
When the assistance call ( ) button is pressed
“assistance required, assistance required”
Operating Tone
The operating chime will sound when the temperature adjustment up () button or down () button is pressed
and the voice prompt is not speaking.
The operating beep will sound for each change in temperature increment when a BATH FILL TEMPERATURE
adjustment button is pressed or scrolled, whether the voice prompt is speaking or not.
The operating beep will sound for each change in volume increment when a BATH FILL VOLUME adjustment
button is pressed or scrolled and the voice prompt is not speaking.
24
TEMPERATURE CONTROL – DELUXE
BATH (l)
°C
0
BATH (l)
°C
0
BATH (l)
°C
0
“assistance required,
assistance required”
BATH (l)
°C
BATH (l)
°C
Adjusting the Volume of the Voice Prompt and Operating Tone
The volume of the voice prompt and the operating tone can be adjusted to a level comfortable for you. The
volume of the voice prompt and the operating tone can be adjusted independently of each other. The volume
levels on a Deluxe controller are adjusted independently of another Deluxe controller.
The voice prompt and / or operating tone can also be turned off on an individual or all Deluxe controllers so
they do not sound at all.
The factory default volume setting of both the voice prompt and operating tone is medium [med]. If there is an
interruption to the water heater power supply, the volume of both the voice prompt and operating tone returns
to the default setting.
When adjusting the volume levels, the operating tone volume level is indicated by a chime, followed by the
voice prompt volume level which is indicated by two beeps. If during the volume setting procedure only the
chime is audible, this indicates the voice prompt is off. If during the volume setting procedure only the two
beeps is audible, this indicates the operating tone is off.
To adjust or turn off the volume for the voice prompt and operating tone:
Turn off all Deluxe controllers.
Press and hold the up () button, then within four (4) seconds press the on / off ( ) button.
Each press of the on / off ( ) button will change the voice prompt and operating tone in the following
sequence:
operating tone [MAX], voice prompt [OFF]
operating tone [MIN], voice prompt [MIN]
operating tone [MIN], voice prompt [OFF]
operating tone [OFF], voice prompt [OFF]
operating tone [MAX], voice prompt [MAX]
operating tone [MED], voice prompt [OFF]
operating tone [MED], voice prompt [MED]
This order then repeats.
Note: If the on / off ( ) button is not pressed within four (4) seconds of the up () button being pressed,
“CL” will start flashing on the temperature display panel. If this occurs, release the up () button and
recommence the procedure.
ASSISTANCE CALL FUNCTION
A Deluxe controller has an assistance call ( ) button. Should assistance be required, such as when in the
bathroom, a voice prompt will sound on all Deluxe controllers to notify others that assistance is required.
The Deluxe controller does not have to be on for the assistance call function to be activated and the function
can be activated during any operation.
To Call for Assistance
To operate the assistance call function:
1. Press the assistance call ( ) button.
The voice prompt will sound on all Deluxe controllers,
“assistance required, assistance required”
The red light in the assistance call ( ) button will glow on
all Deluxe controllers for the duration of the voice prompt.
25
TEMPERATURE CONTROL – DELUXE
Temperature settings
37
38
39
40
41
42
43
44
45
46
48
50
55
60
warm
average hot shower
hot very hot
TEMPERATURE SETTINGS – DELUXE CONTROLLERS
The temperature settings of each type of Deluxe controller are:
Bathroom1 & 2 Deluxe 37°C to 46°C (in 1°C increments), 48°C*, 50°C
Kitchen Deluxe 37°C to 46°C (in 1°C increments), 48°C*, 50°C**, 55°C,*** 60°C
* limited to 48°C when the Bath Fill function is set with 874 and 876 series models.
** limited to 50°C on an 876 series model.
*** NZ – limited to 55°C.
The installation of a Bathroom Deluxe controller(s) only (i.e. no Kitchen Deluxe controller) limits the
temperature setting of the water heater to a maximum of:
874 series 50°C
876 series 50°C
regardless of the preset outlet temperature setting of the water heater.
The installation of a Kitchen Deluxe controller will allow a maximum temperature setting of:
874 series 60°C – AU 55°C – NZ
876 series 50°C
regardless of the preset outlet temperature setting of the water heater.
If there is no controller installed, the water heater defaults to the preset outlet temperature setting. This may
be up to:
874 series 75°C
876 series 50°C
Refer to “How Hot Should The Water Be?” on page 5.
On a building fitted with a temperature limiting device such as a tempering valve and where an 874 series
water heater is installed without a separate untempered hot water line to the kitchen, laundry or other nonablution area, although the Kitchen Deluxe controller will be able to display temperatures above 50°C and the
water leaving the water heater will be at the set temperature, the maximum water temperature which can be
delivered to the hot water outlets in these locations is determined by the temperature setting of the temperature
limiting device. This is usually 50°C.
On a building fitted with a temperature limiting device set to 50°C, to enable the delivery of water temperatures
above 50°C to the kitchen, laundry or other non-ablution area, separate untempered pipe work must be
installed from the water heater to the hot water outlets in these locations.
26
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