Rheem 701 Technical Document

Owners Guide
and
Installation Instructions
Electric
Boiling Water Unit
Models 3, 5, 7.5, 10, 15, 25, & 40 Litre
This boiling water unit must be installed and serviced by a qualified person. Please leave this guide with the owner .
703
701
702

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Australia Only
Notice to Victorian Customers from the
Victorian Plumbing Industry Commission.
This boiling unit 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 under bench
pumped water chiller and ask for your Compliance Certificate.

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Contents
ABOUT YOUR BOILING WATER UNIT (BWU)..................................................4
INTRODUCTION .................................................................................................4
SETTING THE TIMER FUNCTIONS 701 & 702 SERIES....................................7
A) SETTING THE CLOCK ..........................................................................8
B) SET TIMER TO STD/AUTO MODE........................................................8
C) PROGRAMMING ‘SET ON/OFF TIMES’ ...............................................9
D) PROGRAMMING ‘SLEEP DELAY TIMER’..........................................10
E) SELECTING ‘FILTER LIFE’ FUNCTIONS ...........................................10
F) ACCESSING ‘SERVICE MENU’...........................................................11
ERROR CODES................................................................................................11
SETTING THE TIMER 703 SERIES..................................................................15
INSTALLATION.................................................................................................19
WATER SUPPLY CONNECTION .....................................................................20
OVERFLOW / VENT CONNECTION IMPORTANCE........................................20
ELECTRICAL REQUIREMENTS ......................................................................23
COMMISSIONING.............................................................................................24
FAULT FINDING GUIDE...................................................................................25
SPECIFICATIONS............................................................................................. 26
DIMENSIONS AND MOUNTING SPECIFICATIONS........................................27
WALL PLATE DIMENSIONS 3 & 5 LITRE MODELS.......................................28
DIMENSIONS SPECIFICATIONS 701 SERIES................................................29
702 SERIES ................................................30
703 SERIES ................................................31
RHEEM WARRANTY........................................................................................32

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ABOUT YOUR BOILINGWATER UNIT
INTRODUCTION
Thank you for choosing our Rheem Boiling Water Unit. Please take a few minutes to
read this booklet because it contains important information about the correct
installation and operation of your boiling water unit. The Rheem Boiling Water Unit
supplies boiling water. It is made from high quality copper and is designed to be
installed indoors. The Rheem Boiling Water Unit is supplied with all the required
safety controls for installation (not including the isolation valve prior to the boiling
water unit).
WARNING:
This boiling water unit is only intended to be operated by persons who have the
experience or the knowledge and the capabilities to do so. This boiling water
unit 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 boiling water unit.
This boiling water unit uses 230-240 V AC electrical power for operation of the
control systems and the electrically operated components. The removal of the
access cover(s) will expose 230-240 V wiring. They must only be removed by a
qualified person.
SAFETY
This boiling water unit is supplied with an over temperature cut-out on the boiling
element to prevent element burn out in the event of control failure. If the electrical
supply cord to the boiling water unit is damaged, it must be replaced by a qualified
competent person in order to avoid becoming a hazard. In Australia phone Rheem
Service on 131 031, in New Zealand phone your nearest Rheem Service Centre on
0800 657 335 for an inspection. For extra electrical protection against power surges
and spikes it is recommended that the user install a surge protector prior to the
boiling water unit.
WARNING:
The Rheem warranty may not cover faults if any of the installed safety devices
are tampered with.

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TO TURN OFF THE BOILING WATER UNIT
The 701 & 702 series boiling water units are supplied with a programmable timer
(see page 6), the 703 series boiling water units have an Eco setting (see page 15)
Rheem recommend the timer or Eco function be used to conserve energy.
If it is necessary to turn off the boiling water unit:
• Switch off the electrical supply at the isolating switch to the boiling water unit.
• Close the cold water isolation valve at the inlet to the boiling water unit.
TO TURN ON THE BOILING WATER UNIT
• Open the cold water isolation valve fully on the cold water line to the boiling water
unit.
• Switch on the electrical supply at the isolating switch to the boiling water unit.
Note: The boiling water unit may not appear to turn on immediately when it is first switched
on as the electronic controller will automatically check the system prior to allowing
water into the boiling water unit (this could be up to 10 seconds).
On initial start up after installation, this boiling water unit automatically runs through a
set-up cycle to detect the boiling point of water. During this cycle steam may
discharge from the vent pipe for a short time. This set-up cycle will take up to 18-30
minutes depending on unit, and when completed (boiling point detected) the unit will
commence incremental filling. It is important NOT to operate the tap during the set-
up cycle because it may affect the operating temperature of the unit.
IS THIS BOILING WATER UNIT INSTALLED CORRECTLY?
Installation requirements are shown under Installation (on page 19).
The boiling water unit 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 Clause G12 of the New Zealand Building Code
DOES THE WATER QUALITY AFFECT THE BOILING WATER UNIT?
The boiling water unit is suitable for most public water supplies, however some water
qualities may have detrimental effects on the boiling water unit, its components and
fittings. If you are in a known harsh water area you must first read Water Supplies
(on page 17). If you are not sure, have your water quality checked against the
conditions described on page 17.

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HOW LONG WILL THE BOILING WATER UNIT LAST?
There are a number of factors that will affect the length of service the boiling water
unit will provide. These include but are not limited to the water quality, the water
usage pattern etc. Refer to “Precautions” below However, your boiling water unit is
supported by a comprehensive Rheem warranty (refer “Rheem Warranty” on page
33).
PRECAUTIONS
The boiling water unit must be maintained in accordance with the Owner‟s Guide and
Installation Instructions.
If this boiling water unit is to be used where an uninterrupted boiling water supply is
necessary for your application or business you should ensure that you have back up
redundancy within the building. This should ensure the continuity of boiling water
supply in the event that this boiling water unit 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.
HOW YOUR BOILING WATER UNIT WORKS
The boiling water unit is designed to operate using mains cold water pressure by
connecting directly to the mains water supply. If the mains supply pressure in your
area exceeds 1000kPa a secondary pressure limiting valve must be fitted.
The supply pressure should be greater than 50 kPa (3-10Litre), 75kPa (15-25L) or
100kPa (40L) for the Rheem Boiling Water Unit operating to its optimum
performance.
BOILING WATER
The Rheem Boiling Water Unit is electronically controlled to obtain the maximum
performance, and incorporates further safety devices to prevent over temperature
and over filling.
ELECTRONIC CONTROLLER & TIMER (701 and 702 Series)
Your Rheem boiling water unit incorporates smart heating software and an electronic
timer to obtain the best efficiency for the energy used. The electronic timer allows the
user to program when the unit is on or off and when the sleep mode activates to
save energy. Also the operator has the availability to indicate and diagnose any
system faults that occur without the need to unnecessarily call for a service
technician. (Refer “Setting the Timer” on page 7)
ECO TIMER (703 Series)
The 703 Series also incorporates smart heating software and an electronic „Eco‟
timer to obtain the best efficiency for the energy used. The Eco timer allows the unit
to activate „sleep mode‟ to save energy after 2 hours of inactivity.

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SETTING THE TIMER 701 & 702 SERIES
TIMER FUNCTIONS
701 & 702 Series have 24 hour timers fitted. For 703 series go to page 15.
Function
Mode
Description
Clock
N/A
Set clock time.
STD/AUTO
STD
BWU „ON‟ 24 hours 7 days.
AUTO
BWU operates according to programmed „Set
ON/OFF Times‟.
Set ON/OFF
Times
N/A
Program ON/OFF times for AUTO mode.
Sleep Delay Time
N/A
Program delay-off time from last usage
(operates in AUTO mode only).
Filter Life*
Remaining Life
Displays remaining filter life in litres.
Filter Reset
Resets filter „Remaining Life‟ to „Set Filter Life‟
setting. Utilised when replacing filter.
Set Filter Life
Program filter life start value in litres.
Service Menu
Error Codes
Displays alpha error codes (refer to page 11 for
error codes and their meanings).
Boiling Temp
Displays the current boiling water temperature in
ºC.
Calib. Reset
Reactivates automatic boiling point calibration
operation.
Temp Override
Manually select calibrated temp setting.
Selectable from 70 –99 ºC.
Software Version
Displays Timer and Controller software versions
(top = Timer, lower = Controller).
Temp Show
ON/OFF
Enable/disable boiling water temperature display
on timer screen (in ºC).
TB Treq
Displays boiling water temperatures in ºC. (TB =
calibrated temp, Treq = maintained temp).
* 701 and 702 Series Boiling Water Units do not have a water filter however filter life
functions can be utilised if the water supply to the BWU has a water filter fitted.
To select a Timer Mode
Press the (P) button until the desired mode is displayed on the screen. Press the (✓)
button to confirm selection. Pressing (X) button at any time returns the unit to the
main menu. Any functions previously accepted will be retained.
Note: The display will revert back to main menu from any mode if a button has not
been pressed for 1 minute.

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A) Setting the Clock
1. Press and release the (P) button, „Clock‟ is displayed flashing on the screen.
2. Press and release the (✓) button to confirm selection. „Set Clock Day‟ will be
displayed on the screen with the day selection shown flashing.
3. Press and release the (▲) button until the desired day is selected.
4. Press and release the (✓) button to confirm selection. „Set Clock HOUR‟ will
be displayed on the screen with the hours section of the time shown flashing.
5. Press and release the (▲) button until the desired hour (24 hour time)
appears flashing on the screen.
6. Press and release the (✓) button to confirm selection. „Set Clock MIN‟ will be
displayed on the screen with the minutes section of the time shown flashing.
7. Press and release the (▲) button until the desired minute appears flashing on
the screen.
8. Press and release the (✓) button to confirm selection. The display will revert
to the main menu and the time setting will be saved.
B) Set Timer to STD/AUTO Mode
1. Press and release the (P) button until „Timer STD/AUTO‟ is displayed flashing
on the screen.
2. Press and release the (✓) button to confirm selection. „STD‟ will be displayed
flashing on the screen.
3. Pressing and releasing the (▲) button alternates between the „STD‟ and
„AUTO‟ icons.
4. Press and release the (✓) button when the „STD‟ or „AUTO‟ icon is shown on
the display. The display will revert to the main menu. If „STD‟ is selected the
unit will operate 24 hours a day. If „AUTO‟ is selected the unit will operate
according to the pre set times on the timer (refer to „Programming Set ON/
OFF Times‟ below).
Note: If the timer is in AUTO mode and is in an „OFF‟ period, the pressing of any
Timer button or lever on the tap will reactivate the unit. The unit will then
operate normally until the next programmed „OFF‟ time.

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C) Programming ‘Set ON/OFF Times’ (For Use in ‘AUTO’ Mode)
Note: A highlighted numeral i.e. 7:00 indicates that the highlighted numeral 7 is
flashing on the display. X:XX is your time setting.
1. Press and release the (P) button until „Set ON/OFF Time‟ is displayed flashing
on the screen.
2. Press and release the (✓) button to confirm selection. „SUN 7:00 –7:00
Set ON hour‟ will be displayed on the screen.
3. Press and release the (▲) button until the desired hour appears flashing on
the screen.
4. Press and release the (✓) button to confirm selection. „SUN X:XX –X:XX
Set ON minute‟ will be displayed on the screen.
5. Press and release the (▲) button until the desired minutes appear flashing on
the screen.
6. Press and release the (✓) button to confirm selection. SUN X:XX –X:XX
Set OFF hour‟ will be displayed on the screen.
7. Press and release the (▲) button until the desired hour appears flashing on
the screen.
8. Press and release the (✓) button to confirm selection. „SUN X:XX –X:XX
Set OFF Minute‟ will be displayed on the screen.
9. Press and release the (▲) button until the desired minutes appear flashing on
the screen.
10.Press and release the (✓) button to confirm selection. MON 7:00 –17:30
Set ON hour‟ will be displayed on the screen.
11.Continue steps 3 –8 for Monday through to Saturday. When step 8 is
completed for Saturday the display will automatically revert to the main menu
and the program will be saved.
Note: To program the unit to be in „OFF‟ mode for an entire day, set the „ON‟ and
„OFF‟ times to be the same i.e. ON = 0:00 OFF = 0:00.
D) Programming ‘Sleep Delay Time
1. ’Press and release the (P) button until „Sleep Delay Time‟ is displayed flashing
on the screen.
2. Press and release the (✓) button to confirm selection. „Sleep Delay Time OFF‟
will be displayed on the screen with „OFF‟ flashing.
3. Press and release the (▲) button until the desired time setting appears
flashing on the screen. Each consecutive push and release of the (▲) button
increases the time setting in one hour increments up to a maximum of 6
hours. If the (▲) button is pressed and released after „6‟ is reached „OFF‟ will
be displayed and if accepted, the sleep delay timer will be turned off.
4. When the desired setting is reached press and release the (✓) button to
confirm selection. The display will revert to the main menu and the setting will
be saved.

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D) Programming ‘Sleep Delay Timer’ Continued
Note: The sleep function puts the unit in a standby mode after a user defined period
(1 –6 hours). The unit will enter „Sleep‟ mode if it has not been used for the
programmed „Sleep Delay Time‟ period. During „Sleep mode‟ the unit will
maintain the boiling water temperature at 0ºC instead of the normal Treq
(Temperature required) approximately 97ºC. To exit sleep mode, press any
Timer button or lever on the tap to reactivate the unit. The unit will then operate
normally.
E) Selecting ‘Filter Life’ Functions
The Filter Life function has three modes to select from, „Remaining Life‟, „Filter
Reset‟ and „Set Filter Life‟. The Filter Life is factory set to OFF as the default setting.
These modes are accessed as follows:
Accessing ‘Remaining Life’
1. Press and release the (P) button until „Filter Life‟ is displayed flashing on the
screen. Note: if „Remaining Life – COUNT IS OFF‟ is displayed on the screen
proceed directly to step 3 otherwise proceed to step 2.
2. Press and release the (✓) button to confirm selection. „Remaining Life XXXX
Litres‟ will be displayed on the screen where XXXX is the value of remaining
filter life in litres.
3. Press and release the (X) or (✓) button to revert back to the main menu.
Activating ‘Filter Reset’ & ‘Set Filter Life’
1. Press and release the (P) button until „Filter Life‟ is displayed on the screen.
Note: if „Remaining Life – COUNT IS OFF‟ is displayed on the screen proceed
directly to step 3 otherwise proceed to step 2.
2. Press and release the (✓) button to confirm selection. „Remaining Life XXXX
Litres‟ will be displayed on the screen.
3. Press and release the (▲) button. „Filter Reset‟ is displayed on the screen.
4. Press and release the (✓) button to confirm selection. „Are You Sure‟ will be
displayed flashing on the screen.
5. Press and release the (✓) button to confirm selection. „Set Filter Life YYYY
Litres‟ is displayed on the screen (with „YYYY Litres‟ flashing) where YYYY is
the previous preset value in litres. Note: „OFF‟ may be displayed flashing on
the screen if the previous value was set to OFF.
6. Press and release the (▲) button until the desired setting appears flashing on
the screen. Each consecutive push and release of the (▲) button increases
the capacity setting in 1,000 litre increments from a start value of 1,000 litres
up to a maximum setting of 14,000 followed by OFF.
7. Press and release the (✓) button to confirm selection. The display will revert
to the main menu and the setting will be saved.

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F) Accessing ‘Service menu’
The service menu has seven modes to select from (refer to „Timer Functions‟ on
page 7). This function allows easy identification of problems occurring with the unit
by the service technicians (see details on the table below for Product error codes).
Each mode is accessed as follows:
Select Appropriate Service Mode
i Error Codes
ii Boiling Temp
iii Calib Reset
iv Temp. Override
v Software Version
vi Temp Show ON/OFF
vii TB Treq
Product Error Codes
i) Accessing Error Codes
1. Press and release the (P) button until „Service‟ is displayed on the screen.
2. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen.
3. Press and release the (X) or (✓) button to revert back to the main menu.
Note: An error code will be automatically cleared from the display when the fault
relating to that error code is rectified and the BWU is re-powered. Refer to
the error code table below for error codes and their meaning.
Error Code Table
ERROR
CODE
ERROR
CODE
Hot Thermistor Fault O/C- S/C
A*
High Level Probe Fault
J
Heating Triac S/C –Uncontrolled
Temperature Rise
C*
Water Heating Fault –
Element Not Heating
L
Expired Filter
E
Watch Dog Software
Reboot
M
Calibration Time Out
G
Rapid Temperature Rise –
Empty Tank
N
Low Level Probe Fault
H

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Notes: Error Code Table
Fault codes without an asterisk (*) are informational only and the boiling water unit
will continue to operate however the affected section may not function.
*displayed is a critical fault. BWU unit will shut down and control board relay will de-
energise. In Australia phone Rheem service on 131 031, in New Zealand call a
Rheem Service Centre 0800 657 335 for a service call.
ii) Accessing Boiling Temp
Press and release the (P) button until „Service‟ is displayed on the screen.
1. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen with any error codes listed below.
2. Press and release the (▲) button until „Boiling Temp XXX ºC‟ is displayed on
the screen where XXX is the current boiling water temperature in ºC.
3. Press and release the (X) or (✓) button to revert back to the main menu.
iii) Activating Calibration Reset Mode
Different altitudes will cause water to boil at different temperatures. To prevent the
water in the boiling water tank from boiling continuously (which is energy inefficient)
the boiling water unit is fitted with an altitude calibration function which automatically
operates when the unit is operated for the first time or if „calibration reset mode‟ is
activated. If the boiling water delivery temperature is not hot enough or the unit
continuously boils, ‟calibration reset mode‟ should be activated to recalibrate the unit.
When the unit is calibrating, the BWU will boil the water twice (approximately 60
seconds each time) in order to calibrate the optimum boiling point according to
altitude. During this procedure steam and water droplets will be vented from the vent
outlet on the tap. The entire calibration period will take approximately 18 –30
minutes and must not be interrupted; this includes operation of the tap outlet.
1. Press and release the (P) button until „Service‟ is displayed on the screen.
2. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen with any error codes listed below.
3. Press and release the (▲) button until „Calib. Reset‟ is displayed on the
screen.
4. Press and release the (✓) button to confirm selection. „Are You Sure‟ will be
displayed on the screen.

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iii) Activating Calibration Reset Mode Continued,
5. Press and release the (✓) button to activate calibration mode. „Error Codes‟
will be displayed on the screen with any error codes listed below.
6. Press and release the (✓) button to revert back to the main menu „Calibrating
Do Not Interrupt‟ will be displayed on the timer screen and the unit will
recalibrate the boiling water temperature. When calibration is complete the
timer display will automatically revert back to the main menu.
iv) Activating Temp Override
Temperature override allows the installer to set the calibrated temperature to perform
a fast calibration when the unit is operated for the first time, or to change the boiling
water temperature to a selectable value from 70ºC –99ºC.
1. Press and release the (P) button until „Service‟ is displayed flashing on the
screen.
2. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen with any error codes listed below
3. Press and release the (▲) button until „Temp override‟ is displayed on the
screen.
4. Press and release the(✓) button to confirm selection. The current calibrated
(or preset) boiling water temperature will be displayed flashing on the screen.
5. Press and release the (Up) button until the desired setting appears flashing on
the screen. Each consecutive press and release of the (Up) button increases
the boiling water temperature setting in 1º increments from 70ºC to a
maximum of 99 ºC.
6. Press and release the (✓) button. „Are You Sure‟ will be displayed flashing on
the screen.
7. Press and release the (✓) button to confirm selection after which time the
timer screen will revert back to the main menu, „Calibrating Do Not Interrupt‟
will be displayed on the timer screen and the unit will recalibrate the boiling
water temperature to the new selected temperature. When calibration is
complete the timer display will automatically revert back to the main menu.
v) Accessing Software Version
1. Press and release the (P) button until „Service‟ is displayed on the screen.
2. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen with any error codes listed below.
3. Press and release the (▲) button until „Software Version‟ is displayed on the
screen.
4. Press and release the (✓) button to confirm selection. The software version
will be displayed on the screen. The top digits refer to the timer software
version and the lower digits refer to the controller software version.
5. Press and release the (X) or (✓) button to revert back to the service menu.
„Error Codes‟ will be displayed on the screen.
6. Press and release the (X) or (✓) button to revert back to the main menu.

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vi) Permanently Display the Boiling Water Temperature
(Temp Show ON/OFF)
This function allows the temperature of the water within the boiling water unit to be
permanently displayed on the timer display screen.
1. Press and release the (P) button until „Service‟ is displayed on the screen.
2. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen with any error codes listed below.
3. Press and release the (▲) button until „TempShow ON/OFF‟ is displayed on
the screen.
4. Press and release the (✓) button to confirm selection. The current setting,
„ON‟ or „OFF‟ will be displayed flashing on the screen.
5. Press and release the (▲) button to cycle between ON and OFF.
6. Press and release the (✓) button to confirm selection. The display will revert
to the service menu. „Error Codes‟ will be displayed on the screen.
7. Press and release the (X) or (✓) button to revert back to the main menu.
vii) Accessing Calibrated & Required Temperature (TB Treq) Information
This function allows the user to see what Temperature the unit calibrated to, and
the subsequent required temperature the unit is required to be maintained at.
1. Press and release the (P) button until „Service‟ is displayed on the screen.
2. Press and release the (✓) button to confirm selection. „Error Codes‟ will be
displayed on the screen with any error codes listed below.
3. Press and release the (▲) button until „TB Treq‟ is displayed on the screen.
Under the letters „TB‟ the boiling water calibration temperature will be
displayed in ºC. Under the letters „Treq‟ the temperature the unit will maintain
the water at will be displayed in ºC.
4. Press and release the (X) or (✓) button to revert back to the main menu.
Keypad Lock
This function is for extra security to prevent tampering with the unit settings. Default
setting is disabled.
To activate keypad lock
1. Press and release the (P) button until „Keylock‟ is displayed on the screen.
2. Press and release the (✓) button to confirm selection. „Key lock enable‟ will
be displayed on the screen.
3. Press and release the (✓) button to confirm selection. „Keypad Locked‟ will be
displayed on the screen when any button is pressed.
To deactivate keypad lock
Press (P) and (▲)buttons simultaneously for a period of approximately 10 seconds
until „Keypad Locked‟ disappears from the screen and display returns to normal.

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SETTING THE TIMER 703 SERIES
Timer Functions for 703 Series Eco timer
The 703 Series boiling water units are
supplied with an „eco‟ timer.
The timer incorporates a „Sleep Delay
Mode‟ which when activated will
automatically shut the system down after a
set period of time of no use (2 hours).
To activate sleep delay mode, press and release the „eco‟ button. When the „eco‟
button is released the eco circle surround will illuminate green to indicate the unit is in
sleep delay mode. Power will still be on to maintain set temperature until 2 hours
with no use has lapsed
After 2 hours with no use (from last inlet solenoid valve operation) the unit will go to
sleep at which time „Treq‟ (Treq - temperature required) becomes 0ºC (normally
97˚C). When the unit is in sleep mode „Press eco to heat‟ text will illuminate green.
To „wake up‟ the unit, press and release the „eco‟ button whilst the „Press eco to
heat‟ is illuminated green. When the „eco‟ button is released the eco circle surround
light will be extinguished, sleep mode will be deactivated and operation will return
normal, heating the water to the calibrated value. (approximately 97˚C.)
To deactivate Eco mode, press the eco button whilst the „eco circle surround‟ is
illuminated. When the „eco‟ button is released, the „eco circle surround‟ will be
extinguished and „eco‟ mode is deactivated.
Note: Heating will continue as normal whilst in sleep delay mode until the 2 hour
period of no use time elapses i.e. the „eco‟ button does not need to be pushed
for heating unless the „Press eco to heat text‟ is illuminated.

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Activating Calibration Reset Mode: - 703 Series
Different altitudes will cause water to boil at different temperatures. To prevent the
water in the boiling water tank from boiling continuously (which is energy inefficient)
the boiling water unit is fitted with an altitude calibration function which automatically
operates when the unit is operated for the first time or if „calibration reset mode‟ is
activated. If the boiling water delivery temperature is not hot enough or the unit
continuously boils, ‟calibration reset mode‟ should be used to recalibrate the unit.
When the unit is calibrating, the BWU will boil the water twice (approximately 60
seconds each time) in order to calibrate the optimum boiling point according to
altitude. During this procedure steam and water droplets will be vented from the vent
outlet on the tap. The entire calibration period will take approximately 18 - 25
minutes and must not be interrupted; this includes operation of the tap outlet.
To activate calibration reset mode, turn off the power to the unit. Press and hold the
„Eco‟ button and restore the power to the unit. Once the heating LED is flashing,
release the „Eco‟ button. When the unit has completed its calibration cycle, the red
heating LED will illuminate solidly.
Eco Timer LED Indication
The eco timer has integral LED‟s which indicate system status as follows:
LED
LED Status
Description
„Heating‟ text
On amber flashing
Calibration cycle in progress
„Heating‟ text
On amber solid
Heating in progress
„Ready‟ text
On green solid
Boiling water ready
Eco „surround‟
On green solid
Sleep delay mode activated
Off
Sleep mode deactivated
„Press eco to heat‟ text
On green solid
Unit is asleep
„Ready‟ LED glows
green when water is
ready to use
„Eco surround‟ LED
glows green when Eco
mode is activated
„Press Eco to heat‟
LED glows green
when sleep mode is
activated
„Heating‟ LED glows
amber when water is
heated, and flashes
amber when unit is
calibrating

17
Operating the Boiling Water Unit Tap
The 702 and 703 Series have a push - pull tap assembly. Water flows from the tap
directly below the lever when the lever is operated.
The 701 Series has a push - pull lever located in the front panel of the unit. When
operated, boiling water flows from the spout on the underside of the unit.
Water Supplies
Your boiling water unit is manufactured to suit the water conditions of most
Australian and New Zealand metropolitan water supplies. However, there are some
known water supplies which can have detrimental effects on the boiling water unit
and its operation and/or life expectancy. If you are unsure of your water quality, you
can obtain information from your local water supply authority. This boiling water unit
should only be connected to a water supply which complies with these guidelines for
the Rheem warranty to apply.
Chloride and PH
In a high chloride water supply, the water can corrode stainless steel parts and
cause them to fail. Where the chloride level exceeds 250 mg/L the Rheem warranty
does not apply to the boiling water unit. The pH is used as a measure of the water‟s
alkalinity and acidity. In an acidic water supply, the water can attack metal parts and
cause them to fail. Where the pH is less than 6.5 or greater then 7.5, the Rheem
warranty does not apply to the boiling water unit..
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 corrosive and
the Rheem warranty does not apply. In a scaling water supply, calcium carbonate is
deposited out of the water onto any hot metallic surface. Where the saturation index
exceeds +0.80, the Rheem warranty does not apply to the storage vessel unless a
water softening device is installed.
WARNING
Boiling water units not installed in accordance with the above advice will not be
covered by the Rheem warranty.

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SAVE A SERVICE CALL
Check the items below before making a service call. You will be charged for
attending to any condition or fault that is not related to manufacture or failure of a
part.
Not Enough (Or No) Boiling Water
• Is the electricity switched on?
Inspect the wall power socket to see if it is switched on. Also check the fuse or circuit
breaker at the switchboard to see if it is tripped.
• Is the timer in the off period?
If the timer has been set to turn off and the unit is below the optimum delivery
temperature.
Water Not Hot Enough?
Heavy usage
You may find that due to heavy boiling water usage the water temperature may be
lower than normally expected due to insufficient heating time being allowed.
High altitude
The boiling water unit is fitted with automatic altitude calibration to prevent the water
from continually boiling, which is energy inefficient. Different altitudes will cause the
unit to boil at different temperatures. If you believe the water temperature is not hot
enough, recalibrate the unit (701 & 702 Series see page 11, 703 series owners see
page 15).
High Electricity Bills
Should you at any time, feel your electricity account is too high, we suggest you
check the following points: 701 & 702 Series are supplied with a programmable timer
and sleep mode. Check to see if these features have been activated. Refer to
„Setting the Timer 701 & 702 Series on page 7. 703 series have a sleep timer, to
activate see page 15).
Unit Will Not Switch Off
The electronic timer on 701 and 702 Series will only switch the unit on or off when it
is in “Auto” mode (See section B on page 8) or sleep mode (Eco mode on 703
Series, see page 15) is activated, otherwise the unit will operate 24 hours a day 7
days a week.
No Water Coming Out Of The Tap
There may have been a large draw off prior. Wait a minute for the unit to fill enough
for you to get water out. If water will still not come out of the tap check the timer
screen, if there is an error message contact Rheem service. In Australia phone 131
031, in New Zealand phone Rheem Service Centre on 0800 657 335 to resolve any
problems with the unit.

19
INSTALLATION
LOCATION
This boiling water unit is suitable for indoor installation only.
INSTALLATION STANDARDS
The boiling water unit 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 Clause G12 of the New
Zealand Building Code.
BOILING WATER UNIT APPLICATION
If this BWU is to be used where an uninterrupted boiling water supply is necessary
for the application or business, then there should be redundancy within the building.
This should ensure the continuity of boiling water supply in the event that this boiling
water unit was to become inoperable for any reason. We recommend you provide
advice to the system owner about their needs and the buildings backup redundancy.
OPENING THE UNIT
The jacket is removed from all models, by undoing the 4 retaining screws at the top
and bottom of the jacket, and pulling the jacket forward.
MINIMUM CLEARANCES
For ventilation reasons, all units require a minimum clearance of 50mm on all sides.
For ease of servicing (where there is sufficient space) Rheem recommend 300mm
clearance from the top of all units. For element replacement reasons Rheem
recommend clearance of 150mm from the right hand side of 3 to 10 litre units and
300mm from the left hand side of the 15 to 40 litre units. Rheem recommend a
minimum clearance of 400mm measured from the underside of the BWU jacket to
any sink bench.
MOUNTING
The BWU when installed is suspended from mounting screws located into keyhole
slots at the back of the BWU (refer to Dimension & Mounting Specification on page
27).
Be sure that the mounting screws are securely inserted into the keyhole slots. The
screws MUST be anchored in such a way, that they will hold the weight of the unit
when filled with water, (refer to the specifications table on page 26).

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WALL PLATE 3 AND 5 LITRE 701 SERIES
3 & 5 litre 701 Series have a wall plate supplied to allow fixing of the new BWU
utilising the existing Lazer or Zip fixings. The wall plate has been pre-drilled so that
the holes in the wall plate are located where the original mounting points were for the
Lazer or Zip BWU‟s. Once the wall plate has been secured to the wall, the new BWU
is easily mounted on to the wall plate by means of two hooks that locate into two
elongated slots in the BWU back plate it. To prevent the BWU lifting off the wall
plate, using a 6mm flat blade screwdriver, bend the tab on the BWU back plate
outward 8-9mm prior to fitting the BWU to the wall plate. See page 28 for Wall Plate
Dimensions.
WARNING
WATER SUPPLY CONNECTION
Cold mains pressure water (refer to Specifications on page 27) for minimum water
pressures) must be piped and connected to the ½” BSP inlet fitting located on the left
hand side underneath the unit. An accessible isolating valve must be installed near
the unit. This unit contains an inlet strainer on the water inlet connection (refer to
figure 1 below). For rear entry connection on 3-10 Litre models, we recommend that
you use prefabricate pipework for ease of connection.
VENT AND INLET CONNECTION
OVERFLOW / VENT CONNECTION IMPORTANCE
Connect a 15 mm (½”) pipe to the overflow/vent connection (½”BSP nipple).This
pipe is to be made of a material such that continuous steam will not degrade it (i.e.
Before drilling into the wall make sure that the screw positions avoid any pipe-work
or electrical cables. Allow 4 mm clearance between the screw head and the wall
for locating the unit.
Figure 1: Overflow / Vent Connection All Models.