Rheem TB Series Technical Document

This water heater must be installed and serviced by an authorised person.
Please leave this guide with the householder.
Owners Guide
and
Installation Instructions
TB3/5 Boiling Water Unit

2
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.

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CONTENTS
RESPONSIBLE OFFICER –We recommend reading pages 4 to 16.
The other pages are intended for the installer but may be of interest.
CONTENTS...................................................................................3
ABOUT YOUR BOILING WATER UNIT.......................................4
HOW YOUR BOILING WATER UNIT WORKS............................6
OPERATING THE TAP...............................................................13
CHANGING THE WATER FILTER.............................................14
SAVE A SERVICE CALL............................................................15
INSTALLATION ..........................................................................17
ELECTRICAL CONNECTION.....................................................22
COMMISSIONING.......................................................................23
DRAINING THE BOILING WATER UNIT...................................23
WATER SUPPLIES.....................................................................24
END OF LIFE WATER HEATER DISPOSAL.............................24
RHEEM BOILING WATER UNIT WARRANTY..........................26

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ABOUT YOUR BOILING WATER UNIT
INTRODUCTION
Thank you for choosing our Rheem TB Series 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 Rheem Boiling Water Unit.
The Rheem Boiling Water Unit supplies both boiling water and cold filtered
water. It is made from high quality copper and is designed to be installed
indoors, under sinks and in cupboards. The Rheem Boiling Water Unit is
supplied with all the required safety valving for installation (not including the
isolation valve prior to the water heater). Your Rheem Boiling Water Unit is
designed to supply boiling water to a purpose built Rheem boiling water
dispensing tap. As an option your Rheem Boiling Water Unit can also be
combined with a Rheem Water Chiller for total water solutions at the sink.
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
an authorised or qualified person.
HOW HOT SHOULD THE WATER BE?
The system controls will operate to maintain a water temperature of near
boiling point within the boiling unit.
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.
This water heater is supplied with an integral safe tray with automatic shut off
device that complies with ATS 5200.476. A safe tray and/or safe waste are not
required for installation.
If the electrical supply cord to the water heater is damaged, it must be replaced
by an authorised person in order to avoid becoming a hazard. Phone your
nearest Rheem Service Department or Accredited Service Agent to arrange 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.
The warranty can become void if any of the installed safety devices are
tampered with or if the installation is not in accordance with these
instructions.

ABOUT YOUR BOILING WATER UNIT
5
TO TURN OFF THE BOILING WATER UNIT
This boiling water unit is supplied with a programmable timer. We recommend
the timer 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, 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 17 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 17. The boiling
water unit must be installed by an authorised person and the installation must
comply with National Standards AS/NZS 3500.4, AS/NZS 3000 and all local
codes and regulatory authority requirements. In New Zealand, the installation
must also conform to the New Zealand Building Code.
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 and
fittings. If you are in a known harsh water area you must first read Water
Supplies on page 29. If you are not sure, have your water quality checked
against the conditions described on page 24.
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 the water quality, the water usage pattern
etc. However, your boiling water unit is supported by a comprehensive warranty
(refer “Warranty” on page 31).

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HOW YOUR BOILING WATER UNIT WORKS
RHEEM BOILING WATER UNIT
The boiling water unit is designed to operate using mains 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 350 kPa for the Rheem Boiling
Water Unit to perform at its best. Pressure lower than this will affect the delivery
performance of the water chiller (if installed).
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
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 agent. (Refer “Setting the Timer” on page 7).
ENVIRONMENT
If a chiller unit is installed, at the end of the service life and prior to the chiller
being disposed of, a person qualified to work with refrigerants must recover the
refrigerant from within the sealed system. The refrigerant must not be vented to
atmosphere. Phone your nearest Rheem Service Department or Accredited
Service Agent to arrange for an inspection.
WATER FILTER
The Rheem Boiling Water Unit incorporates an integral water filter. The water
filter increases the quality of water by removing odours and particles. Over time
the water filter will clog up with sediment. We recommend that the water filter
be changed at least every 6 months. The Boiling Water Unit has a filter count
built into the software that lets the operator know when the filter is getting close
to its recommended life.
IMPORTANT
Rheem highly recommends that regular water filter cartridge changes are
carried out to ensure the system is performing to a high standard. If the
water filter is not regularly serviced and maintained on the recommended
intervals by Rheem, the water filter cartridge will block with the trapped
impurities, causing bacterial growth in the filter media and dramatically
reducing filtered water flow, affecting the operation of the filtered boiling
water unit. For more information, please call the Rheem service
department.

HOW YOUR BOILING WATER UNIT WORKS
7
SETTING THE TIMER
Your Rheem boiling water unit is supplied with a programmable 7 day timer
which allows the unit to operate in the most efficient fashion to suit your needs.
The timer also incorporates a sleep mode which can be set to automatically
shut the system down after a set period of time of no use, say after 6 hours. If a
Rheem chiller is included, the timer will also control the chiller functions. The
tap includes a safety lock to limit access to boiling water if required.
Timer Functions
A) Setting the Clock
B) Timer STD/AUTO
C) Set ON/OFF Times*
D) Set Sleep Delay Time*
E) Filter Life
F) Service Menu
G) Chiller Selection
H) Chiller Temp
I) Cold Tap Time
J) Hot Tap Time
K) Key Lock
* ON/OFF and Sleep Delay times operate in AUTO Mode.
To select a Timer Mode
Press the (Prog) button until the desired mode is displayed on the screen.
Press the (Accept) button to confirm selection. Pressing (Cancel) 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.
A) SETTING THE CLOCK
Select the clock mode
(Prog>Clock>Accept)
Display Shows: “Set Clock Day”.
Press the (UP) button until the desired day appears on the screen and press
the (Accept) button to confirm selection.
Display Shows: “Set Clock HOUR”
Press the (UP) button until the desired hour (24 Hour Time) appears flashing
on the screen and press the (Accept) button to confirm selection.
Display Shows: “Set Clock MIN”
Press the (UP) button until the desired minute appears flashing on the screen.
Press the (Accept) button to confirm selection and the display reverts to the
main menu.

HOW YOUR BOILING WATER UNIT WORKS
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B) Set Timer to STD/AUTO Mode
Select the Timer STD/AUTO mode (Prog>Timer STD/AUTO>Accept)
Display Shows: “STD”
Pressing the (UP) button alternates the “STD”/“AUTO” icons. STD operation
means that the unit operates 24 hours a day, Auto mode reverts the unit to
operate at the pre set times on the timer. Press the (Accept) button to confirm
selection and the display reverts to the main menu. If the timer is in AUTO
mode, pushing any Timer key or lever on the tap will reactivate the unit. The
unit will operate normally until the next programmed “Off” time.
C) TO SET ON/OFF TIMES
Select the Timer ON/OFF mode
(Prog>Set ON/OFF times>Accept)
Note: to set the unit to be in off mode for an entire day, set the “on” and “off”
times to be the same eg: On = 0:00 Off = 0:00
Display Shows: “SUN” “7:00 –7:00” “Set ON hour”.
Press the (UP) button until the desired hour appears on the screen and press
the (Accept) button to confirm selection.
Display Shows: “SUN” “7:00 –7:00” “Set ON minute”.
Press the (UP) button until the desired minute appears on the screen and press
the (Accept) button to confirm selection.
Display Shows: “SUN” “7:00 – 7:00” “Set OFF hour”.
Press the (UP) button until the desired hour appears on the screen and press the
(Accept) button to confirm selection.
Display Shows: “SUN” “7:00 – 7:00”“Set OFF Minute”.
Press the (UP) button until the desired minute appears on the screen and press the
(Accept) button to confirm selection and advance to the next day.
Display Shows: “MON” “7:30 –15:30” “Set ON hour”.
Note: Continue with same procedure for Monday through to Saturday.
D) TO SET SLEEP DELAY TIME.
Select the Sleep on/off mode (Prog>Sleep DelayTime>Accept)
Display Shows: “Sleep DelayTime” “OFF”.
The sleep function puts the unit in a standby mode after a user defined period.
The Sleep Delay will be factory set to OFF as the default setting. Pressing the
(UP) button increases the delay time up to 6 hours. Press the (Accept) button
to confirm selection and the display reverts to the main menu. The unit will go
into “Sleep” mode if it has not been used for the “Sleep Delay Time” period. To
exit “Sleep”, push any Timer key or lever on the tap. If you activate the Sleep
Delay Time we recommend that you also activate the Temp Show On/Off
function.

HOW YOUR BOILING WATER UNIT WORKS
9
E) FILTER LIFE
Select the Appropriate Filter Mode (Prog>Filter life>Accept)
i) Remaining Life
ii) Filter Reset
i) To Select Remaining Life mode
(Prog>Filter Life>Accept>Remaining Life)
Display Shows: “Remaining Life” “XXXX litres“
Press the (Cancel) or (Accept) button to revert back to the main menu.
ii) To Select the Filter Reset mode
(Prog> Filter Life >Accept>filter reset>Accept)
Display Shows: “Filter Reset”
Press the (Accept) button to confirm selection at which time you are
prompted “Are you sure?”. Press (Accept) once more and,
Display Shows: “Set Filter Life” “XXXXLitres”.
Pressing the (UP) button scrolls from the filter OFF selection (this turns the
filter count off if a filter is not installed with the boiling water unit) up to
12000 litres. We recommend a default value of 4000 litres, until the user
knows the filter will last longer. Press the (Accept) button to confirm
selection and the display reverts to the Filter menu.
F) SERVICE MENU
Select Appropriate Service Mode (Prog>Service>Accept)
1) Error Codes
2) Boiling Temp
3) Chiller Temp* (only shown when chiller is attached)
4) Calib Reset
5) Temp Override
6) Software Version
7) Temp Show ON/OFF
8) TB Treq
1) Product Error Codes
(Prog>Service>Accept>Error Codes)
This function allows easy identification of problems occurring with the unit
by service technicians.
Error
Code
Error
Code
Hot Thermistor O/C, S/C
A
Low Level Probe Fault
H
Cold Thermistor O/C, S/C
B
High Level Probe Fault
J
Triac S/C
C
Compressor Fault
K
Leak Detected
D
Water Heating Fault
L
Expired Filter
E
Internal software reset,
No action required
M
Calibration Time Out
G
Excessive Temperature Rise
N

HOW YOUR BOILING WATER UNIT WORKS
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2) For Boiling Unit Display Temp mode
(Prog>Service>Accept>Boiling Temp)
Display Shows: “XXX ˚C“
This function displays the current boiling water temperature.
Press the (Cancel) button to revert back to the main menu.
3) For Chiller Unit Display Temp mode
(Prog>Service>Accept>Chiller Temp)
Display Shows: “XXX ˚C“
This function displays the current chilled water temperature.
Press the (Cancel) button to revert back to the main menu.
4) For Calibration Reset mode
(Prog>Service>Accept>Calib.Reset>Accept)
Display Shows: “Calib. Reset“
This function recalibrates the boiling water unit to boiling point. Press the
(Accept) button to recalibrate the boiling point. Press (Accept) again at the
“Are You Sure?”prompt. Press the (Cancel) button to revert back to the
Main menu. The timer will now display “Calibrating Do Not Interrupt”.
When calibration is complete the timer display will revert back to the main
menu.
5) For Temp Override mode
(Prog>Service>Accept>Temp Override>Accept)
This function allows the user to manually set the required boiling water
temperature.
Display Shows: “XX°C“
Press the (UP) button until the desired temperature is shown (range is from
70°C to 99°C). Press the (Accept) button to activate the selection, then the
words “are you sure?” will flash on the screen. Press the (Accept) button
to confirm your selection. The words “Calibrating Do Not Interrupt” may
appear for a short period. This is because the unit is checking that it is able
to reach the temperature you are requiring. Once the unit has finished
checking, the screen will return to normal.
6) To Display the Software Version
(Prog>Service>Accept>Software Version>Accept)
This displays both the Timer and Controller software versions. The top digits
pertain to the timer software version, and the lower digits pertain to the
controller software version.