Rheem 701, 702, 703 Owner's Manual And Installation Instructions

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

2

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 BOILING WATER 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 set­up 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