Rheem 1366191 AmbiPower 280e R290 Heat Pump Installation Instructions

Owner’s Guide
and
Installation Instructions
Air Sourced 551E280
Heat Pump Water Heater
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
An electronic copy of these Owner’s Guide and Installation Instructions can be downloaded from
rheem.com.au and rheem.co.nz.
PATENTS
This water heater may be protected by one or more patents or registered designs in the name of
Rheem Australia Pty Ltd.
TRADE MARKS
® Registered trademark of Rheem Australia Pty Ltd.
™ Trademark of Rheem Australia Pty Ltd.
Note: Every care has been taken to ensure accuracy in preparation of this publication.
No liability can be accepted for any consequences, which may arise as a result of its application.
CONTENTS
HOUSEHOLDER
This booklet contains important information about your
new water heater, including terms of the Rheem warranty.
We recommend you read pages 7 to 29,
and the terms of the Rheem warranty on pages 4 to 6.
The other pages are intended for the installer but may be of interest.
Warranty ....................................................................................................................................... 4
Safety, Warnings, Installation Notes ......................................................................................... 7
About Your Water Heater .......................................................................................................... 10
Display Panel ............................................................................................................................. 14
Maintenance Requirements ...................................................................................................... 22
Water Supplies........................................................................................................................... 24
Save A Service Call ................................................................................................................... 27
Installation .................................................................................................................................. 30
Connections – Plumbing .......................................................................................................... 37
Connections – Electrical ........................................................................................................... 40
Commissioning .......................................................................................................................... 42
Draining The Water Heater ....................................................................................................... 43
Maintenance, Repair, Decommissioning, Disposal ............................................................... 44
Installation Report ..................................................................................................................... 49
RHEEM AUSTRALIA PTY LTD, A.B.N. 21 098 823 511
www.rheem.com.au, www.rheem.co.nz
For Service Telephone 131 031 AUSTRALIA or 0800 657 335 NEW ZEALAND
3
RHEEM HEAT PUMP WATER HEATER WARRANTY
- AUSTRALIA AND NEW ZEALAND ONLY HEAT PUMP WATER HEATER MODELS 551E280
1.1
1.2
1.3
1.4
1.5
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
1. THE RHEEM WARRANTY – GENERAL
This warranty is given in Australia by Rheem Australia Pty Limited ABN 21 098 823 511 of 1 Alan Street,
Rydalmere New South Wales, and in New Zealand by Rheem New Zealand Limited of 475 Rosebank
Road Avondale Auckland 1026.
Rheem offer a trained and qualified national service network who will repair or replace components at
the address of the water heater subject to the terms of the Rheem warranty. Rheem Service, in addition
can provide preventative maintenance and advice on the operation of your water heater. The Rheem
Service contact number in Australia is 131031, with Contact Centre personnel available 24 hours, 7 days
a week to take your call and if necessary to arrange a service call for during normal working hours
Monday to Friday (hours subject to change) or in New Zealand on 0800 657 335.
For details about this warranty, you can contact us in Australia on 131031 or by email at
[email protected] (not for service bookings), or in New Zealand on 0800 657 335 or by
email at [email protected] (not for service bookings).
The terms of this warranty and what is covered by it are set out in sections 2 and 3 and apply to water
heaters manufactured from the 1st February 2024.
If a subsequent version of this warranty is published, the terms of that warranty and what is covered by
it will apply to water heaters manufactured after the date specified in the subsequent version.
2. TERMS OF THE RHEEM WARRANTY AND EXCLUSIONS TO IT
Rheem may reject a claim under this warranty in its sole discretion if:
a) You do not arrange for a major service to be conducted on your water heater in the fifth year after
installation, in accordance with Rheem’s recommendation in the Owner’s Guide and Installation
Instructions; and
b) The fault giving rise to the warranty claim would have been detected and rectified during that major
service.
The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion.
If you require a call out and we find that the fault is not covered by the Rheem warranty, you are
responsible for our standard call out charge. If you wish to have the relevant component repaired or
replaced by Rheem, that service will be at your cost.
Where a failed component or cylinder is replaced under this warranty, the balance of the original
warranty period will remain effective. The replacement does not carry a new Rheem warranty.
Where the water heater is installed outside the boundaries of a metropolitan area as defined by Rheem
or further than 25 km from either a regional Rheem branch office or an Accredited Rheem Service
Agent’s / Centre’s office, the cost of transport, insurance and travelling between the nearest branch
office or Rheem Accredited Service Agent’s / Centre’s office and the installed site shall be the owner’s
responsibility.
Where the water heater is installed in a position that does not allow safe or ready access, the cost of
that access, including the cost of additional materials handling and/or safety equipment, shall be the
owner’s responsibility. In other words, the cost of dismantling or removing cupboards, doors or walls
and the cost of any special equipment to bring the water heater to floor or ground level or to a serviceable
position is not covered by this warranty.
This warranty only applies to the original and genuine Rheem water heater in its original installed location
and any genuine Rheem replacement parts.
The Rheem warranty does not cover faults that are a result of:
a) Accidental damage to the water heater or any component (for example: (i) Acts of God such as
floods, storms, fires, lightning strikes and the like; and (ii) third party acts or omissions).
b) Misuse or abnormal use of the water heater.
c) Installation not in accordance with the Owner’s Guide and Installation Instructions or with relevant
statutory and local requirements in the State or Territory in which the water heater is installed.
d) Connection at any time to a water supply that does not comply with the water supply guidelines as
outlined in the Owner’s Guide and Installation Instructions.
4
RHEEM HEAT PUMP WATER HEATER WARRANTY
- AUSTRALIA AND NEW ZEALAND ONLY HEAT PUMP WATER HEATER MODELS 551E280
e)
Repairs, attempts to repair or modifications to the water heater by a person other than Rheem
Service or a Rheem Accredited Service Agent / Centre.
f) Faulty plumbing or faulty power supply.
g) Failure to maintain the water heater in accordance with the Owner's Guide and Installation
Instructions.
h) Transport damage.
i) Fair wear and tear from adverse conditions (for example, corrosion).
j) Cosmetic defects.
k) Ice formation in the waterways of a water heater system incorporating a freeze protection system
where the electricity supply has been switched off or has failed.
l) corrosion caused by exposure to a corrosive environment such as coastal sea air, industrial or
geothermal sulphur contamination environments, e.g., on the coast or in geothermal regions such
as Rotorua, where high levels of atmospheric Sulphur Dioxide are present in the atmosphere.
2.9 Rheem may reject a claim under this warranty in its sole discretion if a third party solar diverter is
connected to the water heater.
2.10 Subject to any statutory provisions to the contrary, this warranty excludes any and all claims for damage
to furniture, carpet, walls, foundations or any other consequential loss either directly or indirectly due to
leakage from the water heater, or due to leakage from fittings and/ or pipe work of metal, plastic or other
materials caused by water temperature, workmanship or other modes of failure.
2.11 If the water heater is not sized to supply the hot water demand in accordance with the guidelines in the
Rheem water heater literature, any resultant fault will not be covered by the Rheem warranty.
2.12 In New Zealand this warranty excludes to the extent permissible all implied warranties set out in the
Sale of Goods Act 1908 (New Zealand) and all guarantees set out in the Consumers Guarantees Act
1993 (New Zealand) to the extent that the goods are acquired for the purpose of resupply in trade
consumption in the course of a process of production or manufacture or repairing or treating in trade
other goods or fixtures on land.
3.1
3. WHAT IS COVERED BY THE RHEEM WARRANTY
FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT
Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance
with its specifications as follows:
The period from the date of
installation in which the
fault must appear in order to
be covered
What coverage you receive
All components
Year 1
Repair and/or replacement of the faulty
component, free of charge, including labour.
Sealed System* components
(if the water heater is installed
in a single-family
domestic dwelling)
Years 2 & 3
Repair and/or replacement of the faulty
component, free of charge, including labour.
What components are
covered
551E280 models
The cylinder
(if the water heater is installed
in a single-family
domestic dwelling)
Years 2 & 3
Years 4 to 7
Repair and / or replacement of the cylinder,
free of charge, including labour.
Replacement cylinder, free of charge.
Installation and repair labour costs are the
responsibility of the owner.
The cylinder
Replacement cylinder, free of charge.
(if the water heater is not
Years 2 & 3
Installation and repair labour costs are the
installed in a single-family
responsibility of the owner.
domestic dwelling)
* The Sealed System includes components that carry refrigerant only, e.g. Compressor, Condenser, TX Valve,
Receiver / Drier, Evaporator and associated pipe work.
5
RHEEM HEAT PUMP WATER HEATER WARRANTY
- AUSTRALIA AND NEW ZEALAND ONLY HEAT PUMP WATER HEATER MODELS 551E280
3.2
4.1
4.2
5.1
5.2
6.1
6.2
7.1
7.2
Without limiting the periods shown in the table in Clause 3.1, a 5-year whole-of-product warranty applies
where a rebate has been received under Solar Victoria’s Solar Homes Program for a water heater
installed from the 1st July 2023. For further details, call 131 031. Proof of receipt of the rebate is required
to be produced at the time of the service call.
4. ENTITLEMENT TO MAKE A CLAIM UNDER THIS WARRANTY
To be entitled to make a claim under this warranty you need to:
a) Be the owner of the water heater or have consent of the owner to act on their behalf
b) Contact Rheem Service without undue delay after detection of the defect and, in any event, within
the applicable warranty period.
You are not entitled to make a claim under this warranty if your water heater:
a) Does not have its original serial numbers or rating labels.
b) Is not installed in Australia or New Zealand.
5. HOW TO MAKE A CLAIM UNDER THIS WARRANTY
If you wish to make a claim under this warranty, you need to:
a) Contact Rheem on 131031 in Australia or 0800 657 335 in New Zealand and provide owner’s
details, address of the water heater, a contact number and date of installation of the water heater
or if that’s unavailable, the date of manufacture and serial number (from the rating label on the water
heater).
b) Rheem will arrange for the water heater to be tested and assessed on-site.
c) If Rheem determines that you have a valid warranty claim, Rheem will repair or replace the water
heater in accordance with this warranty.
Any expenses incurred in the making of a claim under this warranty will be borne by you.
6. THE AUSTRALIAN CONSUMER LAW
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are
entitled to a replacement or refund for a major failure and for compensation for any other reasonably
foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods
fail to be of acceptable quality and the failure does not amount to a major failure.
The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under
the Australian Consumer Law.
7. THE CONSUMER GUARANTEES ACT 1993 (NEW ZEALAND)
Our goods come with guarantees that cannot be excluded under the Consumer Guarantees Act 1993
(New Zealand). If the goods fail to comply with the applicable guarantees set out under the Consumer
Guarantees Act 1993 (New Zealand) being the guarantee as to acceptable quality, the guarantee as to
correspondence with description or the guarantee as to repair and parts, or if the goods fail to comply
with any express guarantee given by Rheem, then you are entitled to a replacement or refund and for
compensation for any other reasonably foreseeable loss or damage.
The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under
the Consumer Guarantees Act 1993 (New Zealand).
6
SAFETY, WARNINGS, INSTALLATION NOTES
It is important you read the following Safety and Warnings, and Relief Valves information.
SAFETY AND WARNINGS
•
The heat pump will operate until a water temperature of 60°C is reached. If the ambient air temperature
is outside of the heat pump’s operating range and heating of water is required, an electric heating unit will
heat the water to this setting.
These temperatures are sufficiently hot to cause severe scalding. Water at this temperature may have
been plumbed to fixtures where water hotter than 50°C is allowed, such as the kitchen and laundry.
Refer to;
◼
“How Hot Should the Water Be?” on page 11, and
◼
“Hotter Water Increases the Risk of Scald Injury” on page 11, and
◼
“Temperature Adjustment” on page 11.
•
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 or play with or at the water heater.
•
If the electrical supply conduit to the water heater is damaged, it must be replaced by a qualified person
in order to avoid a hazard. Phone Rheem Service or their nearest Accredited Service Agent / Centre to
arrange for an inspection.
•
This water heater uses 220 V - 240 V a.c. electrical power for operation of the control systems and the
electrically operated components. The removal of the access covers will expose 220 V - 240 V a.c. wiring.
They must only be removed by a qualified person. Do not operate the water heater with any of the covers
removed.
•
This water heater is supplied with an electronic thermostat, an over-temperature energy cut-out and a
combination temperature 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.
The Rheem warranty may not cover faults if the relief valve or other safety devices are tampered
with or if the installation is not in accordance with these instructions.
•
DANGER: The operation of the over-temperature cut-out on the thermostat indicates a possibly
dangerous situation. If the over-temperature cut-out operates, it must not be reset and the water heater
must be serviced by a qualified person.
•
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 lever on the temperature pressure relief valve and expansion control valve (if fitted) requires to be
operated every six (6) months to clear any deposits and to ensure the valve and its drain line are not
blocked.
Refer to:
◼
“Relief Valves” on page 8, and
◼
“Minor Maintenance Every Six Months” on page 22.
•
Servicing of the water heater must only be carried out by qualified personnel. Phone Rheem Service or
their nearest Accredited Service Agent / Centre.
•
Only a person qualified to install or service a water heater can drain the water heater, if this is required.
•
Do not modify this water heater.
7
SAFETY, WARNINGS, INSTALLATION NOTES
•
In areas where there is a risk of freezing conditions, power must be available to the water heater at all
times and the electrical supply to the water heater should not be switched off, otherwise damage could
result.
Refer to:
◼
“Freeze Protection” on page 10, and
◼
“To Turn Off the Water Heater” on page 12.
•
Do not use aerosols, stain removers and household chemicals in the vicinity of this water heater while
it is in operation. Gases from some aerosol sprays, stain removers and household chemicals are corrosive
to the materials used in the heat pump system.
•
Do not store swimming pool chemicals, household cleaners, etc., near the water heater.
•
Ensure the air flow, air inlet louvres and outlet grille are not obstructed in any way at any time.
WARNINGS – REFRIGERANT
•
Be aware that the refrigerant used in this heat pump is flammable and may not contain an odour if it were
to leak.
•
Do not use any means to accelerate the defrosting process of the evaporator coil or other components of
the heat pump.
•
Do not pierce or burn any components of the heat pump.
RELIEF VALVES
Temperature Pressure Relief Valve
This water heater incorporates a temperature pressure relief valve
located near the top of the water heater. This valve is essential for the
water heater’s safe operation.
It is possible for the valve to discharge a quantity of water through the
drain line during each heating period. This quantity should be equal
to approximately 1/50 of the hot water used, as water expands by this
volume when heated.
Expansion Control Valve
In many areas, including South Australia, Western Australia, New
Zealand and scaling water areas, it is mandatory an expansion control
valve is fitted to the cold water line to the water heater.
The expansion control valve will discharge the quantity of water from
its drain line during the heating period instead of the temperature
pressure relief valve as it has a lower pressure rating.
Valve Operation
Continuous leakage of water from either valve and its drain line may
indicate a problem with the water heater. Refer to “Temperature
Pressure Relief Valve or Expansion Control Valve Running” on
page 28.
Warning: Never block the outlet of either valve or their drain lines
for any reason. A relief valve drain must be left open to atmosphere
and be installed in a continuously downward direction.
In locations where water pipes are prone to freezing, the relief valve
drain line must be insulated and not exceed 300 mm in length before
discharging into a tundish through an air gap.
lift until water
flows from the
drain line –
lower gently
outlet /
drain
line
Operate the easing lever on the temperature pressure relief valve and expansion control valve once every
six (6) months to clear any deposits and ensure the valve and its drain line are not blocked. It is very important
the lever is raised and lowered gently. Refer to “Minor Maintenance Every Six Months” on page 22.
8
SAFETY, WARNINGS, INSTALLATION NOTES
Warning: Water discharged from the temperature pressure relief valve drain line will be hot. Exercise care
to avoid any splashing of water by standing clear of the drain line’s point of discharge when operating either
valve’s easing lever.
DANGER: Failure to operate the easing lever on the relief valve once every six (6) months may result in
the water heater cylinder failing, or under certain circumstances, exploding.
If water does not flow freely from the drain line when the lever is lifted, then the water heater must be checked.
Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.
The temperature pressure relief valve should be replaced at intervals not exceeding five (5) years and the
expansion control valve should be checked for performance or replaced at intervals not exceeding
five (5) years. The checking of the valves performance or replacement should occur more frequently in areas
where there is a high incidence of water deposits. Refer to “Water Supplies” on page 24.
INSTALLATION NOTES
This water heater must be installed:
•
by a qualified person,
•
in accordance with the installation instructions,
•
in compliance with the Plumbing Code of Australia (PCA) and Plumbing Standard AS/NZS 3500.4,
•
▪
This water heater is designed for outdoor installation only in a well ventilated area.
▪
This water heater is intended to be permanently connected to the water mains and not connected by
a hose-set. A braided flexible hose or semi-flexible connector may be used for connection to the water
heater, where permitted by AS/NZS 3500.4.
▪
Refer to dimensions diagram on page 35 for clearance requirements to provide adequate ventilation
for the heat pump.
in compliance with the Australian / New Zealand Wiring Rules AS/NZS 3000,
▪
Isolation switches must be installed in the electrical circuit to the water heater in accordance with the
Wiring Rules, so the water heater can be switched off.
▪
The water heater must be directly connected to the mains power supply.
▪
The power supply wires are to be directly connected to the terminal block and earth tab connection,
with no excess wire loops inside the front cover. The temperature rating of the power supply wires
insulation must suit this application, or the wiring protected by insulating sleeving with an appropriate
temperature rating if it can make contact with the internal storage cylinder. The temperature of the
internal storage cylinder can reach 60°C under normal operation.
•
in compliance with all local codes and regulatory authority requirements, and.
•
in New Zealand also conforming to Clauses G12 and H1 of the New Zealand Building Code.
Installation and commissioning requirements and details for the installing plumber and licensed electrical
worker are contained on pages 30 to 43.
Mains pressure water supply
The water heater is designed to operate at mains pressure by connecting directly to the mains water supply.
The water heater is supplied with a temperature pressure relief valve with a pressure rating of 1000 kPa. If an
expansion control valve has been installed on the cold water line to the water heater, this should have a
pressure rating of 850 kPa.
The maximum mains water supply pressure for the water heater is 800 kPa if an expansion control valve is
not installed, or 680 kPa if an expansion control valve is installed. If the mains supply pressure in your area
exceeds these values, a pressure limiting valve must be installed.
The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
9
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
Your Rheem® air sourced heat pump water heater is designed for outdoor installation only. The model you
have chosen is a 551E280 water heater and is recommended for connection to an uninterrupted 24 hour
continuous tariff power supply. Depending upon the size of the household and its hot water requirements and
if the Electricity Retailer permits, an extended off-peak (overnight and day) or Extended time controlled power
supply connection may also be suitable.
A Rheem heat pump water heater consumes less energy than an electric water heater. The impact on an
electricity account will depend on the tariff arrangement of the water heater replaced and where you live.
Contact your energy provider for more information on tariff arrangements and cost comparisons.
The Rheem air sourced heat pump water heater has a vitreous enamel lined steel cylinder. The water heater’s
evaporator absorbs heat from the surrounding air and transfers this heat into the water.
When hot water is drawn off and cold water enters the tank, a sensor activates a fan, a compressor and the
heat pump control system. The fan draws outside air in through the air inlet louvres at the top of the water
heater. Heat is absorbed from the air by an evaporator and transferred into the water through a heat exchanger
wrapped around the water heater cylinder. The resulting cold air is then discharged through the air outlet
louvres back to atmosphere. This process continues while ever heating is required until the water in the storage
tank reaches a temperature of 60°C.
Even on cloudy or cold days, heat is drawn from the surrounding air. The heat
pump will operate when the ambient air temperature is from -7°C to 43°C. The
electric heating unit will operate when the ambient air temperature falls below
-7°C or rises above 43°C if heating is required. The efficiency of the heat pump
increases as the surrounding ambient air temperature increases.
Automatic safety controls are fitted to the water heater to provide safe and
efficient operation.
ELECTRIC BOOSTING
Ice may begin to form on the evaporator reducing the heat pump efficiency,
when the ambient air temperature falls below 7°C and the heat pump has been
operating for an extended period. If the heat pump operates between -7°C and
7°C for longer than 3 hours 20 minutes, the electric heating unit will turn on to
assist in the heating of the water. At ambient air temperatures below -7°C, the
water heater deactivates the heat pump operation and switches to the electric
heating unit. During these periods the evaporator will defrost if necessary.
When operating at a temperature outside of the heat pump’s operating range, the electric heating unit will heat
the water in the water heater. The water will be heated to the Hot Water Temperature Set Point.
FREEZE PROTECTION
The water heater has an active de-frost function so the heat pump operates automatically to remove ice which
may form on its evaporator coil.
Warning: Do not use any means to accelerate the defrosting process of the evaporator coil or other
components of the heat pump.
The water heater also has a freeze protection function built in for extremely cold conditions. When a power
supply is available to the water heater and the Display Panel is turned off at the water heater, the electric
heating unit will automatically turn on if the water temperature in the water heater falls to 5°C. It will heat the
water until the water temperature reaches 10°C and then turn off.
10
ABOUT YOUR WATER HEATER
Warning: In areas where the ambient air temperature may fall below 4°C, power must be available to the
water heater at all times.
The water heater has NO WARRANTY for freeze damage if power is unavailable at the water heater.
HOW HOT SHOULD THE WATER BE?
The system controls (compressor, evaporator and fan) will operate
until a water temperature of 60°C is reached. If the ambient air
temperature is outside of the heat pump’s operating range, the water
temperature is boosted automatically to 60°C by the electric heating
unit, if heating is required.
To meet the requirements of the National Plumbing Standard the
temperature of the stored water must not be below 60°C.
maximum temperature from
heat pump operation and
electric heating unit
operation;
minimum recommended
stored water temperature
HOTTER WATER INCREASES THE RISK OF SCALD INJURY
Warning: This water heater can deliver hot water at temperatures
up to 60°C, sufficiently hot to cause severe scalding. Water at this
temperature may have been plumbed to fixtures where water hotter
than 50°C is allowed, such as the kitchen and laundry.
maximum recommended
supply temperature to
bathrooms and ensuites
Check the water temperature before use, such as when entering a
shower or filling a bath or basin, to ensure it is suitable for the
application and will not cause scald injury.
We recommend and it may also be required by regulations that an approved temperature limiting device be
fitted into the hot water pipe work to the bathroom and ensuite when this water heater is installed. This will
keep the water temperature below 50°C at the bathroom and ensuite. The risk of scald injury will be reduced
and still allow hotter water to the kitchen and laundry.
TEMPERATURE ADJUSTMENT
The thermostat and sensors controlling the heat pump and the electric heating unit are factory set and not
adjustable.
DISPLAY PANEL
The water heater has a Display Panel to indicate the status of the water heater. The Display Panel also allows
the user to select and use the Timer function. Refer to “Display Panel” on page 14.
TIMER CONTROL
A Timer function on the Display Panel allows the hours of operation of the water heater to be set. Refer to
“Clock and Timer” on page 18.
It may be desirable for the water heater not to operate between certain hours, such as during the peak period
when connected to a Time of Use electricity supply due to a more expensive tariff rate applying.
Setting the Timer will affect the operating times of both the heat pump circuit and the electric heating unit.
Consideration must be given to the time allowed to heat up the water in the water heater in cold conditions.
Note: If there is a risk of freezing conditions, the electrical supply to the water heater should not be switched
off, otherwise damage could result. Refer to “Freeze Protection” on page 10.
PRECAUTIONS
The water heater must be maintained in accordance with the Owner’s Guide and Installation Instructions. Refer
to “Maintenance Requirements” on page 22 and to “Anode Inspection and Replacement” on page 25.
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.
11
ABOUT YOUR WATER HEATER
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater:
•
Switch off the electrical supply at the water heater isolating switch on the switchboard or at the isolating
switch at 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 at the isolating switch, otherwise damage could result. Refer to “Freeze Protection” on page 10.
TO TURN ON THE WATER HEATER
•
Open the cold water isolation valve fully on the cold water line to the water heater.
•
Switch on the electrical supply at the water heater isolating switch on the switchboard and at the isolating
switch at the water heater.
•
Check and if required turn the water heater on at the Display Panel.
Note: When the electrical supply is switched on, there will be a knocking sound coming from the heat pump
for a short period of time. This is the electronic expansion valve operating. This is normal and not a fault with
the heat pump.
HEAT PUMP OPERATION
The heat pump may take up to 5 minutes to commence operating when the power supply is switched on. The
heat pump will only operate when:
•
power is available at the water heater, and
•
the water in the storage tank requires heating, and
•
the water temperature in the lower part of the water heater is greater than 11°C below the Hot Water
Temperature Set Point.
If the ambient air temperature is below -7°C or above 43°C and the system calls for heating, the heat pump
will not operate, and the electric heating unit will operate instead.
When the heat pump is operating, the system may switch to the electric heating unit if it detects that the
ambient air temperature is below the minimum operating temperature of -7°C or above the maximum operating
temperature of 43°C. It may also switch back to heat pump operation from the electric heating unit if it detects
the ambient air temperature has moved back to within the heat pump’s operating temperature range.
Note: The heat pump may not turn on after having just completed a heating cycle and more hot water is drawn
from the water heater, or whilst the heat pump was operating and either power was switched off or it was
turned “Off” at the Display Panel. The heat pump will wait a few minutes before operating and the conditions
for start-up are favourable.
GOING ON HOLIDAYS
If you plan to be away from home for a few nights, we suggest you leave the water heater switched on.
If you plan to be away for a longer period, you can conserve energy by turning the water heater off at the
Display Panel. The electrical supply remains available to the water heater. The heat pump and electric heating
unit are prevented from operating under normal operation. The electric heating unit will operate as part of the
freeze protection function if the water in the water heater falls to 5°C. Refer to “Turn the water heater “Off” at
the Display Panel” on page 17 and “Freeze Protection Function” on page 21.
It is not advised to switch off the water heater at the isolating switch if there is the risk of freeze conditions.
Refer to “To Turn Off The Water Heater” on page 12.
12
ABOUT YOUR WATER HEATER
VICTORIAN CUSTOMERS
Notice to Victorian Customers from the Victorian Building Authority. 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 24.
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 pages 24 to 26.
HOW LONG WILL THE WATER HEATER LAST?
The water heater is supported by a manufacturer’s warranty (refer to page 4). 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 11.
ENVIRONMENT
At the end of the service life of the heat pump water heater and prior to the water heater 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 Rheem Service or their nearest Accredited Service
Agent / Centre to arrange for an inspection.
13
DISPLAY PANEL
DISPLAY PANEL AND ICONS
The water heater has a Display Panel to allow the user to view the current operational status of the water
heater and to enable user input functionality.
LEDs on the Display Panel illuminate to display icons when there is power to the water heater and the water
heater is turned on at the Display Panel. The display icons provide information on the water heater’s current
operational status and mode setting, average water temperature in the water heater, usable hot water quantity
available, the time, Timer function settings, and fault codes.
The Display Panel also has printed Selection Keys to enable the user to turn the water heater on or off at the
Display Panel, set or change the time setting, and set the Timer.
•
Refer to “Display Panel – Display Icons and Selection Keys” on page 15 to view the Display icons and
Selection Keys which display on the Display Panel.
•
Refer to “Display Icons and Selection Keys Explained” on page 16 for an explanation of each of the icons
and keys.
Memory – The water heater has a memory function. When the electricity supply is switched on to the water
heater after having been switched off, or if electricity is reinstated to the water heater after a time controlled
electricity supply period, previous settings remain stored. The water heater and heat pump will return to the
programmed state at the time the electricity supply being interrupted.
It is necessary to turn the water heater “On” at the Display Panel after the electricity supply is switched on to
the water heater at the water heater isolating switch for the first time. The water heater must be “On” at the
Display Panel for the heat pump and electric booster unit to operate and heat the water and for the Display
icons to illuminate.
FUNCTIONS AND OPERATIONAL MODES OF THE WATER HEATER
Water Temperature Display
The average water temperature in the water heater is displayed in the Main Display Area of the Display Panel.
Refer to “Display Panel – Display Icons and Selection Keys” on page 15 for the Main Display Area.
ECO Mode
This is the standard heating mode. The ECO (Energy Conservation Only) Mode allows the Heat Pump to
operate when heating is required, and the ambient temperature is within the heat pump’s operating range
of -7°C to 43°C. Refer to “ECO Mode” on page 17.
Useable Hot Water Quantity Display
The Display Panel features a Useable Water Quantity display icon. This icon indicates the quantity of usable
hot water in the water heater. Refer to “Useable Water Quantity Display” on page 18.
Clock and Timer Function
The water heater has a clock function to enable the time to be displayed. It is necessary to set the clock to use
the Timer setting function of the water heater.
The Timer function enables one timed period to be set in a 24 hour period. The Timer can be used to control
the time of operation of the heat pump.
Refer to “Clock and Timer” on page 18.
Fault Codes
In the event the water heater develops a fault, a code will display in the Timer / Clock Display Area. This
function of the water heater indicates to the user a service call is required. Refer to “Fault Codes” on page 21.
Freeze Protection Function
The water heater has a freeze protection function built in for extremely cold conditions to protect the water
heater when the Display Panel is turned off at the water heater. Refer to “Freeze Protection Function” on
page 21.
14
DISPLAY PANEL
DISPLAY PANEL – DISPLAY ICONS AND SELECTION KEYS
15
DISPLAY PANEL
DISPLAY ICONS AND SELECTION KEYS EXPLAINED
Icon Keys
Description
On / Off Key: ** used to switch the water heater “On” or “Off” at the Display
Panel and to reilluminate the Display Panel fully after it has dimmed.
Main Display Area: illuminates the Average Water Temperature in the water
heater in degrees Celsius. During the setting of the Timer function, it displays
‘on’ or ‘of’ depending on whether the Timer ON or Timer OFF time is being set.
Celsius Icon: illuminates when the Main Display Area displays the Average
Water Temperature.
Heating Indicator Icon: illuminates solid when heating of the water is taking
place by the heat pump in ECO Mode or flashing when the electric heating unit
is operating without the heat pump.
Timer / Clock Display Area: displays the time or the Timer ON or Timer OFF
setting, depending upon the operational status of the water heater. A Fault Code
is displayed here if the water heater were to develop a fault.
ECO (Energy Conservation Only) Mode Icon: This is the standard heat pump
heating mode.
Useable Hot Water Quantity Display Icon: illuminates to display the quantity
of usable hot water in the water heater. The number of bars illustrates the
average water temperature in the water heater calculated from the water
temperature in both the upper part and lower part of the water heater.
Timer / Clock Icon: illuminates when a Timer period is set.
Timer On Display: illuminates when the Timer ON period is being set.
Timer Off Display: illuminates when the Timer OFF period is being set.
Operational Mode Selector Key: This key is used to enter or leave the Clock
setting function, and Timer ON and Timer OFF setting functions.
Up Arrow Key: used to increase the time values during the Clock and Timer
setting functions.
Down Arrow Key: used to decrease the time values during the Clock and Timer
setting functions.
** Note – On / Off Key: The On / Off key only turns the Heat Pump and electric heating unit “Off” at the Display
Panel. It does not switch off or isolate the electricity supply to the water heater or Display Panel. If it is
necessary to switch off the electricity supply to the water heater, then this must be done at the water heater
isolating switch on the switchboard or at the isolating switch adjacent to the water heater.
16
DISPLAY PANEL
TURNING THE WATER HEATER “ON” OR “OFF” AT THE DISPLAY PANEL
Turn the water heater “On” at the Display Panel
•
Press the “On / Off” key.
The average water temperature in the water heater illuminates in the Main Display Area.
The time (if set) illuminates in the Timer / Clock Display Area.
The ECO Operational Mode icon illuminates.
The Useable Water Quantity icon bars illuminate (if the water is hot).
The Timer / Clock icon illuminates if the Timer is set.
The Display Panel will remain fully illuminated for one (1) minute if a key is not pressed or after a key is
pressed. It will then go out and become dark.
Note: When the water heater is turned on at the Display Panel after the electrical supply is switched on at the
isolating switch, there may be a knocking sound coming from the heat pump for a short period of time. This is
the electronic expansion valve operating. This is normal and not a fault with the heat pump. This knocking
sound may also occur when the water heater is reconnected to power from a time controlled electrical supply
after having been off.
Reilluminating the Display Panel
•
To reilluminate the Display Panel fully after it has gone out, press the “On / Off” key.
Turn the water heater “Off” at the Display Panel
•
Press the “On / Off” key.
The average water temperature display in the Main Display Area goes out.
The Time display and ECO Operational Mode icon go out.
The Useable Water Quantity icon bars go out.
Note: If the Display Panel is in a ‘dark’ state, i.e. the Display Panel is out, it will be necessary to press the
“On / Off” key twice. The first press reilluminates the Display Panel fully, the second press turns off the
water heater at the Display Panel.
ECO MODE
The ECO (Energy Conservation Only) Mode is the standard day to day operational and heating mode by the
heat pump. This mode allows for the Heat Pump to operate during normal operation when heating is required.
The ECO icon illuminates on the Display Panel.
The heat pump will operate when there is:
•
electricity supply to the water heater, and
•
the water heater is turned “On” at the Display Panel, and
•
the water temperature in the lower part of the water heater is greater than 11°C below the Hot Water
Temperature Set Point, and
•
the ambient temperature is between the heat pump’s operating range of -7°C to 43°C.
If the heat pump operates between -7°C and 7°C for an extended period of time, the electric heating unit may
turn on to assist in the heating of the water.
The electric heating unit will operate if the ambient air temperature is outside of the heat pump’s operating
range of -7°C to 43°C and heating of the water is required.
17
DISPLAY PANEL
USEABLE HOT WATER QUANTITY DISPLAY
The Display Panel features a Useable Hot Water Quantity display icon. This icon indicates the quantity of
usable hot water in the water heater. The more bars illuminated, the more hot water there is available.
The display ranges from no illumination of bars, which indicates the
average temperature of the water in the water heater is below 36°C,
to the illumination of twenty five bars, which indicates the water heater
is full of hot water. The number of bars illustrate the average water
temperature in the water heater calculated from the water
temperature in both the upper part and lower part of the water heater.
It is an approximation only.
Useable Hot Water Quantity Display
The first solid vertical bar represents an average tank temperature of 36°C. Each subsequent solid bar
represents an increase of average water temperature in the water heater by 1°C. When all 25 bars are
illuminated solid, the average tank temperature is 60°C or above. It may be above 60°C if the Hot Water
Temperature Set Point is greater than 60°C.
Whilst the water heater is heating water, the illuminated bars will fluctuate back and forth from left to right.
CLOCK AND TIMER
Clock
The water heater has a clock function. The clock must be set in order to use the Timer setting function of the
water heater.
The setting of the clock includes hours and minutes only. It does not include day, month, or year. Once the
clock is set, the time in hours and minutes is displayed in the Timer / Clock Display when the water heater is
“On” at the Display Panel.
The clock is a 24 hour clock, i.e. if the time is 4:30PM, it will show as 16:30 on the clock.
Timer
The water heater has a Timer function. One timed period can be set within a 24 hour period. The Timer
operates over a 24 hour period, it does not allow for days or months to be programmed.
It may be desirable for the water heater not to operate between certain hours, such as during the peak period
when connected to a Time of Use electricity supply due to a more expensive tariff rate applying.
Setting the Timer will affect the operating times of both the heat pump circuit and the electric heating unit.
The Timer displays use a 24 hour clock, i.e. if the time being set is 4:30PM, it will show as 16:30.
Notes
•
If a Timer period is not set, the Timer / Clock icon does not illuminate.
•
When setting the Timer period, sufficient time must be allowed for the heat pump to operate and heat up
all the water in the water heater to its hot water set point. The heat pump will take longer to heat water in
the cooler winter months than in the warmer summer months.
•
The Timer period may need to be reset at the start and finish of Daylight Saving.
•
The clock and Timer period can only be set when the water heater is “Off” at the Display Panel.
•
If the Timer OFF setting is earlier in the day than the Timer ON setting, then the Timer will turn OFF the
following day.
•
If the Timer is set and the scheduled power ON and scheduled power OFF times are the same, the
scheduled power OFF setting will over-ride the scheduled power ON setting. The heat pump will remain
off and will not operate. The Display Panel and Timer / Clock icon will remain illuminated.
•
If there is no action for 10 seconds during the setting of the Clock or the Timer period, the Display Panel
exits the clock or Timer programming. The last programmed Clock time or Timer setting will be saved.
18
DISPLAY PANEL
To set the Clock
1.
Turn the water heater “Off” at the Display Panel.
◼
Press the “On / Off” key.
The displays and icons go out. The Display Screen is blank.
Note: If the Display Panel is in the ‘dimmed’ state, it will be necessary to press the “On / Off” key
twice. The first press reilluminates the Display Panel fully, the second press turns off the water heater
at the Display Panel.
2.
Activate the Clock setting screen.
◼
Press the “MODE” key 3 times.
A beeping sound will be heard with each press of the key. If the beeping
sound is not heard at the press of the key, then press the key again. Use the
sound feedback to help with the press count.
The current Time setting illuminates in the Timer / Clock Display and the hour
digits commence to flash.
A colon separates the hour digits (on left) and minute digits (on right) on the
display.
3.
Set the Clock time.
◼
Press the "Up" key or "Down" key to select the hour digits.
◼
Press the “Mode” key to save the hour digits.
The minute digits commence to flash.
◼
Press the "Up" key or "Down" key to select the minute digits.
◼
Press the “Mode” key to save the minute digits.
Note: The display switches to the Timer setting.
Proceed to Step 1 if a Timer period is to be set.
Either ‘oN’ or ‘oF’ will flash in the Main Display Area. The Timer / Clock icon
will also flash.
If a Timer period is not to be set and ‘oN’ is flashing in the Main Display area,
then:
➢
Press the “Down” key.
‘oF’ will commence flashing in the Main Display Area.
➢
Press the “Mode” key.
The ‘oF’ icon goes out and the Display Panel is blank.
The water heater remains “OFF” at the Display Panel. It will be necessary to turn the water heater
“ON” again at the Display Panel.
19
DISPLAY PANEL
To set the Timer
1.
Set the Timer ON time.
If a Timer period is to be set and ‘oF’ is flashing in the Main Display area, then:
➢
Press the “Up” key.
‘oN’ will commence flashing in the Main Display Area.
◼
Press the “Mode” key.
The hour digits flash in the Timer / Clock Display Area.
The Timer ON and Timer / Clock icons illuminate and flash.
◼
Press the "Up" key or "Down" key to select the hour digits.
◼
Press the “Mode” key to save the hour digits.
The minute digits commence to flash.
◼
Press the "Up" key or "Down" key to select the minute digits.
◼
Press the “Mode” key to save the minute digits.
The Timer ON icon goes out.
The Timer OFF and Timer / Clock icons illuminate and flash.
The hour digits flash in the Timer / Clock Display Area.
2.
Set the Timer OFF time.
◼
Press the "Up" key or "Down" key to select the hour digits.
◼
Press the “Mode” key to save the hour digits.
The minute digits commence to flash.
◼
Press the "Up" key or "Down" key to select the minute digits.
◼
Press the “Mode” key to save the minute digits.
The Display returns to an off state. The displays and icons go out. The Display Screen is blank.
3.
Turn the water heater “On” at the Display Panel
◼
Refer to “Turn the water heater “On” at the Display Panel” on page 17.
To turn the Timer Function Off
To turn the Timer function off, so power is available to the heat pump 24 hours a day:
4.
Turn the water heater “Off” at the Display Panel and activate the Clock setting screen.
◼
Follow Steps 1 and 2 of the procedure “To Set the Clock” on page 19.
The hour digits in the Timer / Clock Display commence to flash.
5.
Turn the Timer Function off.
◼
Press the “Mode” key.
The minute digits commence to flash.
◼
Press the “Mode” key a second time.
The Timer / Clock Display goes out.
‘oN’, displayed in the Main Display Area, and the Timer / Clock icon both commence
to flash.
If ‘oF’ is flashing in the Main Display Area instead of ‘oN’, there is no need to press
the "Down" key.
◼
Press the "Down" key.
‘oF’ flashes in the Main Display Area and the Timer / Clock icon continues to flash.
◼
Press the “Mode” key a third time.
The Timer / Clock icon and ‘oF’ in the Main Display Area go out and the Display
Panel is blank.
The Timer is no longer set.
The water heater remains “OFF” at the Display Panel. It will be necessary to turn the water heater
“ON” again at the Display Panel.
20
DISPLAY PANEL
FAULT CODES
A fault code will display in the Timer / Clock Display Area in the event the water heater develops a fault. In
addition, a one off six (6) second beeping alarm will sound from the Display Panel if a fault code is displayed.
The fault code will display alternately with the current time display. If there is more than one fault code, each
code will display alternately with the other fault code(s) and the current time display.
The fault codes which may appear are:
•
F01, F02, F03, F04, F05, F06, F07, F08 – The heat pump will not operate. The electric heating unit will
operate to heat the water when heating is required, to provide hot water until a service call is made to
repair the fault.
•
F10, F11 – The electric heating unit will not operate. The heat pump will operate to heat the water when
heating is required. A service call is required to repair the fault.
•
F09, F13 – The heat pump and electric heating unit will not operate and there will be no heating of the
water.
•
F12 – The heat pump and electric heating unit will not operate. This is an over-temperature fault which
will reset when the hot water in the bottom two thirds of tank is either replaced with cold water as hot water
is drawn off, or the water temperature reduces through tank heat loss. If the fault reoccurs, a service call
must be made.
If one or more of the above codes is displayed on the Display Panel, make a note of the fault code(s) and
phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.
FREEZE PROTECTION FUNCTION
The water heater has a freeze protection function built in to protect the water heater in extremely cold
conditions and the water temperature in the water heater falls to 5°C. This condition will only occur if the
Display Panel is turned off at the water heater. The power supply to the water heater must be turned on at the
isolating switch and power must be available to the water heater.
The electric heating unit will automatically turn on if the water temperature in the
water heater falls to 5°C. It will heat the water until the water temperature reaches
10°C and then turn off.
The code Fd and the Heating Indicator Icon will illuminate solid in the Display area
of the Display Panel.
21
MAINTENANCE REQUIREMENTS
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.
Switch off the electrical supply at the power outlet to the water heater prior to performing general maintenance.
This will prevent the water heater from operating while you clean or spray around the water heater. Switch on
the electrical supply at the power outlet to the water heater when finished performing the general maintenance.
The minor maintenance includes:
•
Operate the easing lever on the temperature pressure relief valve. It is very important the lever is raised
and lowered gently. Refer to “Relief Valves” on page 8.
Warning: Water discharged from the temperature pressure relief valve drain line will be hot. Exercise
care to avoid any splashing of water by standing clear of the drain line’s point of discharge when operating
the valve’s easing lever.
•
Operate the easing lever on the expansion control valve. It is very important the lever is raised and
lowered gently. Refer to “Relief Valves” on page 8.
If water does not flow freely from the drain line of either the temperature relief valve or expansion control
valve when the easing lever is operated, phone Rheem Service or their nearest Accredited Service
Agent / Centre to arrange for an inspection.
•
The jacket of the water heater can be cleaned with a soft cloth and warm mild soapy water if required.
Under no circumstances should abrasive materials or powders be used.
•
Inspect around the air inlet and outlet louvres 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 outlet louvres can interfere with the performance of the water
heater.
•
Inspect around the water heater for infestations of insects, such as ants. Insects encroaching into or
nesting in the water heater can interfere with the operation of the water heater and also damage
components. The area around the water heater can be sprayed with insecticide to rid the area of insects.
Warning: Do not spray insecticide near the water heater while the heat pump is operating.
▪
•
➢
Ensure the electrical supply at the power outlet to the water heater has been switched off.
➢
Spray the affected are, taking care not to spray into the air inlet or outlet louvres or onto the
surface of the water heater.
➢
Wait a few minutes to allow any aerosol gases to dissipate before switching on the electrical
supply at the power outlet to the water heater.
Inspect and check the condensate drain hose.
◼
•
If necessary to rid the area of insects:
Remove the drain hose from the drain spigot towards the rear of the heat pump. Use a garden hose
to run water through the drain hose and dislodge any foreign bodies. Reconnect the drain hose to the
drain spigot. Ensure the garden hose and drain hose are well clear of the heat pump and its
components.
Clear away any build-up or snow or ice from around the water heater.
22
MAINTENANCE REQUIREMENTS
MAJOR SERVICE EVERY FIVE YEARS
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, such as the anode and relief valve(s),
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. This service does not involve accessing the refrigerant circuit (sealed
system).
The major service includes:
•
Replace the temperature pressure relief valve.
•
Inspect and flush the expansion control valve (if fitted). If required, replace the valve.
•
Inspect and if required, replace the anode.
If the anode is not replaced, it should be replaced within three years of this service.
Refer to “Anode Inspection and Replacement” on page 25.
•
Check the electric heating unit for excessive calcium build-up or corrosion and replace if necessary.
•
Flush the water heater tank (if required).
•
Check and clean the heat pump of dust and residue.
•
Check and inspect the heat pump for operation.
•
Visually check the unit for any potential problems.
•
Inspect all connections.
•
Inspect around the air inlet and outlet louvres and the water heater in general for plant growth.
•
Inspect around the water heater for infestations of insects, such as ants.
•
Inspect and check the condensate drain hose.
•
Check the items covered in the minor maintenance
Note: The water heater may need to be drained during this service. After the completion of the service, the
water heater will take some time to reheat the water. Depending upon the power supply connection, hot water
may not be available until the next day.
HEAT PUMP SYSTEM
It is recommended the evaporator and refrigeration system is checked every five years. In particularly dusty
environments, it may be necessary to have the heat pump system checked and cleaned of dust and residue
on a more regular basis. This must only be conducted by qualified personnel.
23
WATER SUPPLIES
This water heater must be installed in accordance with this advice to be covered by the Rheem
warranty.
This water heater is manufactured to suit the water conditions of most public reticulated water supplies.
However, there are some known water chemistries which can have detrimental effects on the water heater
and its operation and / or life expectancy. If you are unsure of your water chemistry, you may be able to obtain
information from your local water supply authority. This water heater should only be connected to a water
supply which complies with these guidelines for the Rheem warranty to apply.
CHANGE OF WATER SUPPLY
The changing or alternating from one water supply to another can have a detrimental effect on the operation
and / or life expectation of a water heater cylinder, a temperature pressure relief valve and a heating unit.
Where there is a changeover from one water supply to another, e.g. a rainwater tank supply, bore water supply,
desalinated water supply, public reticulated water supply or water brought in from another supply, then water
chemistry information should be sought from the supplier or it should be tested to ensure the water supply
meets the requirements given in these guidelines for the Rheem warranty to apply.
ANODE
The vitreous enamel lined cylinder of the water heater is only covered by the Rheem warranty when the total
dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode
is used. If an incorrect colour coded anode is used in the water heater, any resultant faults will not be covered
by the Rheem warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the
water heater cylinder.
The correct colour coded anode is as shown in the following table:
Total Dissolved Solids
Anode colour code
0 – 40 mg/L
Green
40 – 150 mg/L
Green or Black
150 – 400 mg/L
Black
400 – 600 mg/L
Black or Blue
600 – 2500 mg/L
Blue
2500 mg/L +
Blue (no cylinder warranty)
The changing of anodes must be carried out by a qualified person.
Note: Some water analysis reports may state the conductivity of the water rather than the level of total
dissolved solids. Conductivity, measured in microsiemens per centimetre (µS / cm), is directly proportional to
the TDS content of the water. TDS, in mg / L, is approximately 70% of the conductivity in µS / cm.
40
(60)
150
(215)
400
(570)
600
(860)
TOTAL DISSOLVED SOLIDS (TDS) mg/L
(CONDUCTIVITY - μS/cm)
2500
(3570)
Green
Black
Blue
warranty applies to a vitreous enamel lined
water heater cylinder if the correct coloured anode
is used for the TDS / conductivity level of the water
ANODE SELECTION
24
Blue
above
2500 mg/L (3570 μS/cm),
no warranty applies to a
vitreous enamel lined
water heater cylinder
WATER SUPPLIES
ANODE INSPECTION AND REPLACEMENT
The anode installed in your water heater will slowly dissipate whilst protecting the cylinder. The life of the
cylinder may be extended by replacing the anode.
For water supplies which are either softened or desalinated, or where the water supply may alternate between
a water tank and a reticulated public supply or another supply, or where there is a variable supply (e.g. from a
bore or public reticulated supply from various water sources), the anode must be inspected (and replaced if
there is any sign of depletion) within five (5) years of its installation.
For all water supplies, if the anode is not replaced during a major service (refer to “Major Service Every Five
Years” on page 23) then the maximum time after installation when the anode should be replaced for this water
heater is eight (8) years.
CAUTION
If the water supply has a TDS greater than 150 mg/L and a green anode has not been changed to a black
anode, or if the TDS is greater than 600 mg/L and the anode has not been changed to a blue anode, there is
the possibility the anode may become overactive and hydrogen gas could accumulate in the top of the water
heater during long periods of no use.
If, under these conditions, the water heater has not been used for two or more weeks the following procedure
should be carried out before using any electrical appliances (automatic washing machines and dishwashers)
which are connected to the hot water supply.
The hydrogen, which is highly flammable, should be vented safely by opening a hot tap and allowing the water
to flow. There should be no smoking or naked flame near the tap whilst it is turned on. Any hydrogen gas will
be dissipated. This is indicated by an unusual spurting of the water from the tap. Once the water runs freely,
any hydrogen in the system will have been released.
SATURATION INDEX
The saturation index (SI) is used as a measure of the water’s corrosive or scaling properties. The saturation
index figures stated are calculated using a water temperature of 80°C.
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 very corrosive, and the Rheem warranty does not apply to a copper
sheathed heating unit. A corrosion resistant heating unit must be used for the Rheem warranty to apply to the
heating unit.
In a scaling water supply calcium carbonate is deposited out of the water onto any hot metallic surface. Where
the saturation index exceeds +0.40, the water is very scaling. An expansion control valve must be fitted on the
cold water line after the non-return valve to protect and for the Rheem warranty to apply to the temperature
pressure relief valve and water heater cylinder.
Where the saturation index exceeds +0.80, the Rheem warranty does not apply to a standard watts density
heating unit. A low watts density heating unit must be used for the Rheem warranty to apply to the heating
unit.
Water which is scaling may be treated with a water softening device to reduce the saturation index of the water.
Refer to the Saturation Index chart on page 26. Refer to the cold water connection diagram on page 37 for the
position of the expansion control valve.
25
WATER SUPPLIES
WITHIN WARRANTY
SPECIFICATION
-1.0
0
+0.4
no warranty applies to a:
-standard watts density heating unit
no warranty applies to a:
temperature pressure relief valve or
a water heater cylinder unless an
expansion control valve is fitted.
no warranty applies to a:
-copper sheathed heating unit
SATURATION INDEX (SI)
ELECTRIC WATER HEATERS
+0.8
SATURATION INDEX
(calculated @ 80°C water temperature)
very corrosive
scaling
corrosive
very scaling
SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY
The water heater is not suitable for certain water chemistries. Those chemistries are listed below. If the water
heater is connected at any time to a water supply with the following water chemistry, the Rheem warranty will
not cover any resultant faults:
Water Chemistry
Component
Total Dissolved Solids (TDS) > 2500 mg/L
water heater cylinder
Total Dissolved Solids (TDS) not suitable for anode type
water heater cylinder
Saturation Index (SI) < -1.0
copper sheathed heating unit
Saturation Index (SI) > +0.4
(if expansion control valve is not fitted)
water heater cylinder
temperature pressure relief valve
Saturation Index (SI) > +0.8
standard watts density heating unit
26
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 HOT WATER (OR NO HOT WATER)
•
Is the electricity switched on?
Inspect the isolating switch marked “HOT WATER” or “WATER HEATER” at the switchboard and the
isolating switch at the water heater and ensure they are turned on.
Check the fuse or circuit breaker marked “HOT WATER” or “WATER HEATER” at the switchboard.
•
Has the Timer been set?
If the Timer has been set, ensure sufficient time has been allowed to reheat the storage tank.
•
Are you using more hot water than you think?
Is one outlet (especially the shower) using more hot water than you think?
Very often it is not realised the amount of hot water used, particularly when showering. Carefully review
the family’s hot water usage. As you have installed an energy saving appliance, energy saving should
also be practised in the home.
Adjust your water usage pattern to take advantage of maximum energy gains. Have your plumber install
a flow control valve to each shower outlet to reduce water usage.
•
Heat pump fault
Is the ‘F09’ or ‘F13’ fault code displayed on the Display Panel? The
heat pump has developed a fault.
The heat pump and electric heating unit will not operate and there
will be no heating of the water. Phone Rheem Service or their nearest
Accredited Service Agent / Centre to arrange for an inspection.
Refer to “Fault Codes” on page 21.
Also refer to “Heat Pump Is Not Operating” on page 28.
•
Relief valve running
Is the relief valve discharging too much water?
Refer to “Temperature Pressure Relief Valve or Expansion Control
Valve Running” on page 28.
WATER NOT HOT ENOUGH
You may find that due to heavy hot water usage the water temperature may be lower than normally expected,
due to insufficient heating time being allowed. You will need to carefully plan your use of the hot water on such
occasions.
WATER TOO HOT
The heat pump and electric heating unit operation will heat the water to a temperature of 60°C. This is normal
operation.
If the water heater Display Panel shows a fault code ‘EC’, this indicates the water heater has developed an
over-temperature fault. The water would have been heated to 85°C. The water heater will reset when the water
in the bottom two thirds of tank is replaced with cold water as hot water is drawn from the water heater.
If the fault reoccurs, a service call must be made. Refer to “Fault Codes” on page 21.
Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.
27
SAVE A SERVICE CALL
HEAT PUMP IS NOT OPERATING
•
Power must be available at the water heater and the water heater switched on.
If there is power to the water heater, check the water heater has been turned “On” at the Display Panel.
Refer to “Turning the Water Heater “On” or “Off” at the Display Panel” on page 15.
•
Time controlled power supply
If the water heater is connected to a time controlled power supply, then during periods of no power supply
at the water heater, the heat pump and electric heating unit will not operate.
This is not a fault condition, but a result of no power being available to operate the water heater.
Check the hours of supply from the electricity retailer.
The Display Panel will illuminate again when power is available again at the water heater.
Note: If power was cut to the heat pump whilst it was operating, it may wait for a few minutes before
recommencing to operate when power is restored and if heating is required.
•
Heat pump operating range
The heat pump’s operating range is when the ambient air temperature is from -7°C to 43°C. It will not
operate outside of this temperature range.
The electric heating unit will operate if the ambient air temperature is outside of the heat pump’s operating
range and heating of the water is required.
The water in the water heater will be heated to the Hot Water Temperature Set Point.
•
Possible fault condition
If the heat pump has developed a fault, the heat pump will not operate, and a fault code will be displayed
on the Display Panel in the Main Display Area. In this condition and depending upon the fault code, if
heating of the water is required, the electric heating unit will operate automatically to heat the water in the
water heater. Refer to “Fault Codes” on page 21.
Take note of the fault code and phone Rheem Service or their nearest Accredited Service Agent / Centre
to arrange for an inspection.
TEMPERATURE PRESSURE RELIEF VALVE OR EXPANSION CONTROL VALVE RUNNING
•
Normal Operation
It is normal and desirable the temperature pressure relief valve or expansion
control valve (if fitted) allows a quantity of water to escape during the heating
cycle. This quantity should be equal to approximately 1/50 of the hot water
used, as water expands by this volume when heated. However, if it discharges
more than a bucket full of water in 24 hours, there may be another problem.
The expansion control valve (if fitted) will discharge water instead of the
temperature pressure relief valve as it has a lower pressure rating. A benefit is
that energy is conserved as the discharged water is cooler. This valve is
installed in the cold water line to the water heater.
Refer to the cold water connection diagram on page 37.
•
Continuous dribble
Try gently raising the easing lever on the relief valve for a few seconds (refer
to “Relief Valves” on page 8). This may dislodge a small particle of foreign
matter and clear the fault. Release the lever gently.
•
Steady flows for long periods (often at night)
This may indicate the mains water pressure sometimes rises above the designed pressure of the water
heater. Ask your installing plumber to fit a pressure limiting valve.
Warning: Never replace the relief valve with one of a higher pressure rating.
•
Heavy flows of hot water from the temperature pressure relief valve until the water heater is cold then stops until water reheats
The water heater must be switched off at the isolating switch or switchboard. Phone Rheem Service or
their nearest Accredited Service Agent / Centre to arrange for an inspection.
28
SAVE A SERVICE CALL
HIGHER THAN EXPECTED ELECTRICITY BILLS
With the installation of your new air sourced heat pump water heater, electrical energy savings can be
achieved. Should you at any time, feel your electricity bill is higher than expected, we suggest you check the
following points:
•
Is the water heater operating for extended periods with the electric heating unit?
Prolonged periods of use where the ambient air temperature is outside of the heat pump’s operating range
when heating is required will increase the amount of heating required by the electric heating unit to ensure
a supply of hot water, increasing running costs.
Refer to “Heat Pump Is Not Operating” on page 28.
•
Has the water heater developed a fault?
Check if an error code is displayed on the Display Panel. If the water heater has developed a fault, it may
be operating with the electric heating unit only, which will increase the amount of purchased energy used.
Refer to “Fault Codes” on page 21.
•
Is the relief valve running excessively?
Refer to “Temperature Pressure Relief Valve or Expansion Control Valve
Running” on page 28.
•
Is one outlet (especially the shower) using more hot water than you think?
Refer to “Not Enough Hot Water” on page 27.
•
Is there a leaking hot water pipe, dripping hot water tap, etc?
Even a small leak will waste a surprising quantity of hot water and energy.
Replace faulty tap washers, and have your plumber rectify any leaking
pipe work.
•
Has there been an increase in hot water usage?
An increase in hot water usage will result in an increase in heat pump operation.
•
Has your water heating tariff rate been increased by your electricity retailer since your previous bill?
•
Is the heat pump water heater on the same tariff as the water heater replaced?
The impact on an electricity account will depend upon the tariff arrangement of the water heater replaced
and where you live. Contact your energy provider for more information on tariff arrangements and cost
comparisons.
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE, PHONE
RHEEM SERVICE OR THEIR NEAREST ACCREDITED SERVICE AGENT / CENTRE.
29
INSTALLATION
THIS WATER HEATER IS FOR OUTDOOR INSTALLATION ONLY.
THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.
INSTALLATION STANDARDS
The water heater must be installed:
•
by a qualified person, and
•
in accordance with the installation instructions, and
•
in Australia in compliance with the Plumbing Code of Australia and in New Zealand conforming to
Clauses G12 and H1 of the New Zealand Building Code, and
•
in compliance with the Australian / New Zealand Wiring Rules AS/NZS 3000, and
•
in compliance with all local codes and regulatory authority requirements.
During the installation and commissioning process, it is not necessary to access the sealed refrigerant system,
which contains a flammable refrigerant. Therefore, the water heater can be installed by a suitably qualified
plumber and electrical worker.
Warning: This water heater may deliver water at high temperature. Refer to the Plumbing Code of Australia
or the New Zealand Building Code, local requirements and these installation instructions to determine if
additional delivery temperature control is required. Refer to “Hot Water Delivery” on page 33.
Victorian Installers
Notice to Victorian Installers from the Victorian Building Authority if this solar water heater is installed in a new
Class 1 dwelling in the State of Victoria. The system model number is to be recorded on the Certificate of
Compliance.
It is also a requirement to provide the householder with permanent documentation recording the system model
number exactly as it is shown in the ‘VEET Product Register’ published by the Essential Services Commission
in Victoria. See www.veu-registry.vic.gov.au/Public/ProductRegistrySearch.aspx. This documentation may be
in the form of an indelible label adhered to the heat pump storage tank, or other suitable form placed in an
accessible location, such as the meter box, for later inspection.
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.
If this water heater is to be used where an uninterrupted hot water supply is necessary for the application or
business, then there should be 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 was to become inoperable for any reason.
We recommend you provide advice to the system owner about their needs and building back-up redundancy
into the hot water supply system.
The water heater is recommended for connection to an uninterrupted 24 hour continuous tariff power supply.
Depending upon the size of the household and its hot water requirements and if the Electricity Retailer permits,
an extended off-peak (overnight and day) or Extended time controlled power supply connection may also be
suitable.
A Rheem heat pump water heater consumes less energy than an electric water heater. The impact on an
electricity account will depend on the tariff arrangement of the water heater replaced and the installation
location. Contact the energy provider for more information on tariff arrangements and cost comparisons.
30
INSTALLATION
TRANSPORTING AND HANDLING THE WATER HEATER
Take care when handling the water heater. The jacket surrounding the heat pump
at the top of the water heater needs to be handled gently so as not to cause
damage.
Do not tilt the water heater more than 30° from the vertical. Care must be taken
during transportation and handling as the water heater is top heavy. It will become
unstable if tilted more than 30° from the vertical. The water heater must be secured
during transport to avoid tipping over. To prevent injury or damage, the water heater
must also be placed on a level surface.
（C ≤ 30°）
In addition, tilting the water heater more than 30° from the vertical during handling will unsettle the refrigerant
gas and compressor lubricating oil. If the water heater has been tilted, it will need one hour to settle before the
power to the water heater can be switched on, otherwise damage to the compressor may result.
All packaging materials must be removed from the water heater prior to its installation. This includes the
removal of the packaging base of the carton from the underside of the water heater.
WATER HEATER LOCATION
The water heater is suitable for outdoor installation only. The water heater should be installed close to the most
frequently used outlet and its position chosen with noise, safety and service in mind. Make sure people
(particularly children) will not accidentally touch the air inlet and outlet louvres and that they are clear of
obstructions and shrubbery.
It is advisable to install the water heater away from bedroom or living
room windows as the system controls can generate a level of noise
whilst they are operating. Consider the location in relation to
neighbours’ bedrooms and living room windows.
Clearance must be allowed for servicing of the water heater. The
water heater must be accessible without the use of a ladder or
scaffold. Make sure the temperature pressure relief valve lever is
accessible and the top and front cover, air inlet and outlet louvres,
system controls and thermostat can be removed for service.
To maintain the designed performance, air flow and air discharge
from the heat pump, and service access, the minimum distances to a
wall or obstruction from the water heater are:
•
25 mm from a wall behind the water heater, and
•
350 mm on the left hand side from the air inlet louvre, and
•
1,000 mm on the right hand side from the air outlet louvre.
It is recommended to leave a minimum distance of 900 mm in front of and to the left hand side of the water
heater, where this is possible, for service access. Refer to the dimensions diagram on page 35.
You must be able to read the information on the rating plate. If possible, leave headroom of one water heater
height so the anode can be inspected or replaced. Remember you may have to remove the entire water heater
later for servicing.
The heat pump water heater is to be installed at ground or floor level and must stand vertically upright on a
level, stable and impervious base designed to avoid ponding in accordance to AS/NZS 3500.4 and as
acceptable to local authorities. The base of the water heater is made of corrosion resistant material, and it may
be placed directly in contact with the supporting surface. It is not necessary to allow for free air circulation
under the base of the water heater.
Note: The water heater should not be placed in direct contact with a concrete surface that is less than two
months old and not fully cured as this may attack the metal coating of the water heater base. A moisture barrier
should be used between the two surfaces in this instance. The barrier should extend at least 100 mm from the
water heater and may be trimmed after two months.
31
INSTALLATION
The water heater must not be installed in an area with a corrosive atmosphere where chemicals are stored or
where aerosol propellants are released, as exposure to the corrosive atmosphere may attack the materials
used in the water heater and heat pump system.
FREEZE PROTECTION
The water heater has a freeze protection function built in for extremely cold conditions. When a power supply
is available to the water heater and the Display Panel is turned off at the water heater, the electric heating unit
will automatically turn on if the water temperature in the water heater falls to 5°C. It will heat the water until the
water temperature reaches 10°C and then turn off.
The water heater has NO WARRANTY for freeze damage if power is unavailable at the water heater.
Warning: In areas where the ambient air temperature may fall below 4°C, power must be available to the
water heater at all times.
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting
valve is required and should be fitted as shown in the cold water connection diagram on page 37.
Model
551E280
Temperature pressure relief valve setting
1000 kPa
Expansion control valve setting *
850 kPa
Maximum mains supply pressure
With expansion control valve
680 kPa
Without expansion control valve
800 kPa
* Expansion control valve not supplied with the water heater.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply and a pressure pump system is not installed, then
the bottom of the supply tank must be at least 1 m above the highest point of the hot water plumbing system,
including the water heater. Care must be taken to avoid air locks. The cold water line to the water heater should
be adequately sized and fitted with a full flow gate valve or ball valve.
ANODE TYPES
The vitreous enamel lined cylinder of the water heater is only covered by the Rheem warranty when the total
dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode
is used. If an incorrect colour coded anode is used in the water heater, any resultant faults will not be covered
by the Rheem warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the
water heater cylinder.
The correct colour coded anode for the water supply being used must be selected and fitted to the water heater
for the Rheem warranty to apply to the water heater cylinder. Refer to “Water Supplies” on page 24 and the
Anode Selection table on page 24. The black anode is typically fitted as standard.
If an incorrect anode is used, there is also the possibility the anode may become overactive and hydrogen gas
could accumulate in the top of the water heater during long periods of no use. In areas where this is likely to
occur, the installer should instruct the householder on how to dissipate the gas safely. Refer to “Caution” on
page 25.
REDUCING HEAT LOSSES
The cold water line to and the hot water line from the water heater must be insulated in accordance with the
requirements of AS/NZS 3500.4 and Clause 12 of the New Zealand Building Code. The insulation must be
weatherproof and UV resistant if exposed.
32
INSTALLATION
HOT WATER DELIVERY
Warning: This water heater can deliver hot water at temperatures up to 60°C, sufficiently hot to cause
severe scalding. Water at this temperature may be plumbed to fixtures where water hotter than 50°C is allowed,
such as the kitchen and laundry.
The installing plumber may have a legal obligation to ensure the installation of this water heater meets the
water temperature delivery requirements of the Plumbing Code of Australia and New Zealand Building Code
Clause G12 so that heated water delivered to fixtures and appliances used primarily for personal hygiene is at
a temperature which is unlikely to scald.
It is necessary and we recommend that a temperature limiting device be fitted between the water heater and
the fixtures and appliances used primarily for personal hygiene such as in a bathroom, ensuite, public
amenities or other ablution areas, to reduce the risk of scalding.
The temperature limiting device used with a heat pump water heater should have a specified ‘minimum
temperature differential’ between the hot water inlet and the tempered water outlet of no greater than 10°C.
Refer to the manufacturer’s specifications of the temperature limiting device.
If a pressure limiting valve is installed on the cold water line to the water heater and the cold water line to a
temperature limiting device branches off before this valve or from another cold water line in the premises, then
a pressure limiting valve of an equal pressure setting may be required prior to the temperature limiting device.
Where a temperature limiting device is installed adjacent to the water heater, the cold water line to the
temperature limiting device can be branched off the cold water line either before or after the isolation valve,
pressure limiting valve and non-return valve to the water heater. If an expansion control valve is required, it
must always be installed after the non-return valve and be the last valve prior to the water heater.
Two Temperature Zones Using a Temperature Limiting Device
CIRCULATED HOT WATER FLOW AND RETURN SYSTEM
This model heat pump water heater is not recommended to be installed as part of a circulated hot water flow
and return system in a building.
SADDLING - PIPE WORK
To prevent damage to the cylinder when attaching pipe clips or saddles to the water heater jacket, we
recommend the use of self-drilling screws with a maximum length of 13 mm. Should pre-drilling be required,
extreme caution must be observed when penetrating the jacket of the water heater.
Note: If the cylinder is damaged as a result of attaching pipe clips or saddles to the jacket, any resultant
faults will not be covered by the Rheem warranty.
33
INSTALLATION
SEISMIC RESTRAINT
New Zealand Building Code Clause B1 requires building elements (including storage water heaters) to be
adequately supported including support against earthquake forces. This water heater must be restrained to
protect against seismic forces. Clause G12 (Edition 3 Amendment 13) Paragraph 6.11.4 and Figure 14 outline
an acceptable solution to this requirement.
As the water heater has a minimum clearance of 25 mm to a wall behind the water heater, suitably sized
vertical blocking will be required running the full height of the storage section only of the water heater, to comply
with this requirement. Ensure the vertical blocking does not encroach over the air inlet and outlet louvres of
the heat pump. The blocking shall be installed in a manner as to allow the condensate drain of the heat pump
to run to a visible discharge point and to be accessed for servicing.
Three (3) Seismic restraints are to be installed around the 551E280 model water heater and suitably fixed to
the wall behind the water heater. Provide sufficient tension on the straps to secure the water heater, taking
care not to cause damage to the water heater outer casing.
The location of the seismic straps shall be:
•
Top strap: the upper seismic strap is to be located below and a maximum of 100 mm from the connection
of the heat pump unit to the storage tank of the water heater. The rating label should not be hidden by the
seismic strap.
•
Bottom strap: the lower seismic constraint is to be located below the cold water inlet of the water heater.
•
Middle strap: the middle strap is to be located approximately at the midpoint between the upper and lower
seismic straps.
TYPICAL INSTALLATION – OUTDOOR LOCATION
Note: In New Zealand, the 551E280 model requires three (3) seismic straps to be installed. Refer to “Seismic
Restraint” on page 34 for additional information and seismic strap positioning.
34
INSTALLATION
DIMENSIONS AND TECHNICAL DATA
Dimensions
Model 551E280
There is a minimum clearance of 25 mm from a wall behind the water heater
35
INSTALLATION
Technical Data
Model number
551E280
Product number – with black anode (magnesium)
551E280R5
Refrigerant type
Product number – with blue anode (aluminium)
551E280R5/B
Maximum Refrigerant charge 340 grams
R290
Storage capacity
litres
280
Refrigerant circuit pressure
2600 kPa
Boost capacity – by electric heating unit
litres
236
IP Rating
IP24
Weight system
cartoned
kg
132
5.2
Weight system
full
kg
402
Average COP @
19°C Ambient air temp &
10°C to 60°C water temp
Rated heat pump power input @ 240 V
watts
690
2.9 kW
Electric heating unit rating @ 240 V
watts
2400
Avg HP Heating Capacity
19°C Ambient air temp &
10°C to 60°C water temp
Maximum rated power input @ 240 V
watts
3100
Electrical circuit
Amps
14
Technical data is subject to change.
Heat Pump 551E280 Performance Specifications
Ambient Air
Temperature
Relative
Humidity
Average Heat Pump
Heating Capacity (kW)
Recovery Rate
@ 45°C rise (L / hr)
Average Coefficient of
Performance (COP)
6°C
87%
2.1
40
3.8
19°C
66%
2.9
56
5.2
33°C
39%
3.6
69
6.6
34°C
57%
3.7
71
6.7
Back-Up Heating Unit Recovery Rate @ 240 V
Heating Unit
Rating
Recovery Rate
@ 30°C rise (L / hr)
Recovery Rate
@ 40°C rise (L / hr)
Recovery Rate
@ 50°C rise (L / hr)
2400 watts
69
52
41
COP – The Coefficient of Performance (COP) for a heat pump is the ratio of how much useful heat it produces
for water heating to the power input into the water heater. The higher the COP number, the more efficient the
heat pump is. The actual COP of the product at any given time will be impacted by a number of factors,
including the ambient air and cold-water inlet temperatures at the place of installation and time of day / season
of operation.
The COP of 5.2 is the average value measured under test conditions with an ambient air temperature of
19˚C/15˚C (Dry Bulb/Wet Bulb) over the entire heat-up process, heating of the water from 10˚C to 60˚C during
water heater operation and a power supply of 240 V~ 50 Hz. The Heat Pump average heating capacity in
Watts and its water heating capacity in Litres / hour were calculated from the results of this test. The heat pump
water heater performance tests were conducted to AS/NZS 5125.1:2014.
Ambient Air Temperature & Humidity – The performance of a Heat Pump changes with ambient air
temperature, humidity and incoming water temperature. The warmer the air temperature and the higher the
Relative Humidity and the cooler the water temperature, then the higher is the heating rate of the heat pump.
Performance specifications stated in relation to the heat pump are measured at predefined conditions during
its testing.
Average Heating Capacity kW – This is how much heating power is put into the water during the heating
cycle. It is expressed as an average due to the changes in heating power from the refrigeration cycle as the
water is being heated and its temperature increases during the heating cycle.
Recovery Rate @ 45°C rise L/hr – Is the number of litres of water that can be heated through a 45°C
temperature rise in one hour, e.g. when the air temperature is 19°C, the heat pump can heat 56 litres of water
from 15°C to 60°C in one hour.
36
CONNECTIONS – PLUMBING
All plumbing work must be carried out by a qualified person and in accordance with the Standard
AS/NZS 3500.4 and all local codes and regulatory authority requirements. In New Zealand, the installation
must also conform to Clauses G12 and H1 of the New Zealand Building Code.
CONNECTION SIZES
•
Hot water connection:
Rp 3/4
•
Cold water connection:
Rp 3/4
•
Relief valve connection:
Rp 1/2
WATER INLET AND OUTLET
The pipe work must be cleared of foreign matter before
connection and purged before attempting to operate the
water heater. All olive compression fittings must use brass
or copper olives. Use an approved thread sealant such as
Teflon tape on all threaded joints.
An isolation valve and non-return valve must be installed on
the cold water line to the water heater. An acceptable
arrangement is shown in the diagram. Refer also to “Hot
Water Delivery” on page 33 and to “Mains Water Supply” on
page 32.
A disconnection union must always be provided at the cold water inlet and hot
water outlet on the water heater to allow for disconnection of the water heater.
This water heater has either a plastic dip tube or fitting liner in the inlet and outlet
fittings (see diagram). These must be in place for the water heater to function
properly. Do not remove or damage them by using heat nearby. They will be
pushed into the correct position as the fitting is screwed in.
This water heater is intended to be permanently connected to the water mains
and not connected by a hose-set. A braided flexible hose or semi-flexible
connector may be used for connection to the water heater, where permitted by
AS/NZS 3500.4.
CONDENSATE DRAIN
A condensate drain hose is supplied with the water heater.
•
Securely connect the condensate drain hose to the condensate drain spigot at the rear of the heat pump,
•
Position the drain hose so it has a continuous fall all the way to the discharge outlet and there are no
bends or distortions in it after it is installed,
•
It may be necessary to use hose clips to secure the drain hose in position,
•
Locate the discharge outlet of the drain hose such that flow out of the pipe can be easily seen and not
cause damage or nuisance.
37
CONNECTIONS – PLUMBING
PIPE SIZES
To achieve true mains pressure operation, the cold water line to the water heater should be the same size or
bigger than the hot water line from the water heater.
The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing
the most suitable pipe size for each individual application. Reference to the technical specifications of the water
heater and local regulatory authority requirements must be made.
TEMPERATURE PRESSURE RELIEF VALVE
The temperature pressure relief valve is shipped with the water heater. The temperature pressure relief valve
must be fitted before the water heater is operated. Before fitting the relief valve, make sure the probe has not
been bent.
To fit the relief valve:
•
Seal the thread with an approved thread sealant such as Teflon tape - never hemp. Make sure tape does
not hang over the end of the thread.
•
Hand tighten the valve into the opening marked “Relief Valve”.
Refer to the dimensions diagram on page 35.
•
Using a spanner engaged on the valve’s spanner flats and applying medium pressure to tighten, turn the
relief valve an additional ½ to 1 ½ turns to secure and make the joint watertight, leaving the valve drain
pointing downwards.
Warning: Do not use a pipe wrench or poor fitting tool on the valve body nor over tighten the valve,
as this could damage the valve and prevent safe operation.
•
Operate the easing lever on the valve to check the smooth operation of the valve plunger. It is very
important the lever is raised and lowered gently. The lever should move smoothly and without undue force.
•
If the lever cannot be moved or is jerky in its movement, then the valve has been damaged and must be
replaced.
•
A copper drain line must be fitted to the temperature pressure relief valve.
Refer to "Relief Valve Drain" on page 39.
•
The valve must be insulated with closed cell polymer insulation or similar (minimum thickness 9 mm) and
the insulation installed so as not to impede the operation of the valve.
The insulation must be weatherproof and UV resistant if exposed.
EXPANSION CONTROL VALVE
In South Australia and Western Australia, it is mandatory to install an expansion control valve (ECV) in the
cold water line to the water heater. In other areas, an ECV is required if the saturation index is greater than
+0.4. Refer to “Water Supplies” on page 24.
The expansion control valve must always be installed after the non-return valve and be the last valve installed
prior to the water heater. Refer to the diagram on page 37. A copper drain line must be fitted to the expansion
control valve. Refer to "Relief Valve Drain" on page 39.
The valve, if installed within 500 mm of the water heater, must be insulated with closed cell polymer insulation
or similar (minimum thickness 9 mm) and the insulation installed so as not to impede the operation of the valve.
The insulation must be weatherproof and UV resistant if exposed.
38
CONNECTIONS – PLUMBING
RELIEF VALVE DRAIN
DN15 copper drain lines must be fitted to the temperature pressure relief valve and expansion control valve (if
one is installed) to carry the discharge clear of the water heater. Connect the drain lines to the valves using
disconnection unions. The drain line from the valve to the point of discharge should be as short as possible,
have a continuous fall all the way from the water heater to the discharge outlet and have no tap, valves or
other restrictions in the pipe work.
A drain line from a relief valve must comply with the requirements of AS/NZS 3500.4.
A drain line must have the number of changes in direction plus the length of the relief drain (in metres) not
exceeding 12. The maximum length of 12 metres for a drain line is reduced by 1 metre for each bend or change
of direction required. Where the distance to the point of final discharge exceeds this length, the drain line can
discharge into a tundish. For example, a relief drain of 9 metres must have no more than three bends before
discharging at an outlet or air-break.
The drain lines from the temperature pressure relief valve and expansion control valve from an individual water
heater may be interconnected where freezing is unlikely. The combined drain line must have a minimum size
of DN20 and discharge via a minimum air-break of 25 mm.
The outlet of a drain line must be in such a position that flow out of the pipe can be easily seen, but arranged
so discharge will not cause injury, damage or nuisance. The termination point of a drain line must comply with
the requirements of AS/NZS 3500.4. Drain lines must not discharge into a safe tray.
In locations where water pipes are prone to freezing, drain lines from the temperature and pressure relief valve
and expansion control valve shall not be interconnected, must be insulated with a minimum thickness of 13 mm
insulation, must not exceed 100 mm in length and are to discharge into a tundish through an air gap of 25 mm
before the drain line enters a zone where freezing is likely.
If a drain line discharges into a tundish, the drain line from the tundish must be not less than DN20. The drain
line from a tundish must meet the same requirements as for a drain line from a relief valve.
Warning: As the function of the temperature pressure relief valve on this water heater is to discharge high
temperature water under certain conditions, it is strongly recommended the pipe work downstream of the relief
valve be capable of carrying water exceeding 93°C. Failure to observe this precaution may result in damage
to pipe work and property.
39
CONNECTIONS – ELECTRICAL
The power supply to the water heater must not be switched on until the water heater is filled with water
and a satisfactory megger reading is obtained. There is NO WARRANTY for the dry firing of the electric heating
unit.
Ensure the water heater has been in the installed position for a minimum of 30 minutes before switching on
the electricity supply to the water heater. Refer to “To Fill and Turn On The Water Heater” on page 42.
MEGGER READING
When a megger test is conducted on this water heater, then the following should be noted.
Warning: This water heater contains electronic equipment and 500 V insulation tests must only be
conducted between active and earth and between neutral and earth. An active to neutral test WILL damage
the electronics.
An insulation test result of between 100 KΩ and 660 KΩ for this water heater is normal.
AS/NZS 3000 permits an insulation test result less than 1 MΩ where the appliance is approved to a Standard
applicable to the appliance. This model water heater is categorised as a ‘stationary Class 1 motor operated
appliance’ and satisfies the requirements of AS/NZS 60335.2.40 for leakage current and electric strength.
Therefore, this model water heater complies with the insulation resistance requirements of AS/NZS 3000.
ELECTRICAL CONNECTION
All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the
edition of the Wiring Rules AS/NZS 3000 in force in the state or territory at the time of installation, and all local
codes and regulatory authority requirements.
The water heater must be directly connected to a 220 V - 240 V a.c. 50 Hz mains power supply. The electrical
power supply cable from the switch board to the water heater must be correctly sized to safely carry the
maximum current draw of the heat pump and electric heating unit operating together on the water heater. The
power supply must be able to supply a minimum of 13 Amps.
The water heater must be on its own circuit with an isolating switch installed at the switchboard. The Wiring
Rules requires a second and lockable isolating switch be installed adjacent to but not on or attached to the
water heater, and a residual current device (RCD) installed in the electrical circuit to the water heater. The
RCD may not be required to be installed in New Zealand.
A flexible 20 mm conduit is required for the electrical cable to the water heater. The conduit is to be connected
to the unit with a 20 mm terminator at the lower front cover. Connect the power supply wires directly to the
terminal block and earth tab connection, ensuring there are no excess wire loops inside the front cover. The
temperature rating of the power supply wires insulation must suit this application, or the wiring protected by
insulating sleeving with an appropriate temperature rating if it can make contact with the internal storage
cylinder. The temperature of the internal storage cylinder can reach 60°C under normal operation.
The conduit and electrical cable are to be installed so they are not subject to wear, corrosion, excessive
pressure, vibration, sharp edges or any other adverse environmental effects over the life of the water heater.
The 551E280 model water heater is recommended for connection to a 24 hour continuous tariff power supply.
Depending upon the size of the household and their hot water requirements, an extended off-peak (overnight
and day) or Extended time controlled power supply connection may also be suitable.
Note: It is not recommended to connect this water heater via a power switching device which allows alternative
supply of grid power and photovoltaic (PV) power.
The water heater will only operate on a sine wave at 50 Hz. Devices generating a square wave cannot be used
to supply power to the water heater.
40
CONNECTIONS – ELECTRICAL
ELECTRIC HEATING UNIT AND THERMOSTAT SETTING
The water heater has an electric heating unit and thermostat, and is controlled by the electronic controller. The
electric heating unit will be automatically activated during periods when the ambient air temperature falls below
-7°C or above 43°C and heating of the water is required. In addition, if the heat pump operates between -7°C
and 7°C for longer than 3 hours 20 minutes, the electric heating unit will turn on to assist in the heating of the
water. The thermostat and sensors controlling the heat pump and the electric heating unit are factory set and
not adjustable.
TIMER
A Timer function on the Display Panel allows the hours of operation of the water heater to be set. Refer to
“Clock and Timer” on page 18. It may be desirable for the heat pump not to operate between certain hours,
such as during the peak period when connected to a Time of Use electricity supply due to a more expensive
tariff rate applying.
The Timer will affect the operating times of both the heat pump circuit and the electric heating unit.
Note: If there is a risk of freezing conditions, the electrical supply to the water heater should not be switched
off, otherwise damage could result. Refer to “Freeze Protection” on page 10.
WIRING DIAGRAM
41
COMMISSIONING
TO FILL AND TURN ON THE WATER HEATER
The power supply to the water heater must not be switched on until the water heater is filled with water
and a satisfactory megger reading is obtained.
•
Open all of the hot water taps in the house (don’t forget the shower).
•
Open the cold water isolation valve fully to the water heater.
Air will be forced out of the taps and the air bleed valve.
•
Close each tap as water flows freely from it.
•
Check the pipe work for leaks.
•
Inspect for leaks at the temperature pressure relief valve connection to the water heater.
If a leak is detected, close the cold water isolation valve fully and relieve pressure from the water heater
by either operating the easing lever on the temperature pressure relief valve or opening a hot tap. Remove
the valve and all of its thread sealant from the threads of the valve. Reapply new thread sealant and refit
the valve.
Refer to the procedure in “Temperature Pressure Relief Valve” on page 38.
•
Operate the easing lever on the temperature pressure relief valve to check the smooth operation of the
valve plunger and that water discharges freely from the drain line. It is very important the lever is raised
and lowered gently. The lever should move smoothly and without undue force.
If the lever cannot be moved or is jerky in its movement, then the valve has been damaged and must be
replaced.
•
Ensure the water heater has been in the installed position for a minimum of 30 minutes before switching
on the electricity supply to the water heater.
•
Switch on the electrical supply at the water heater isolating switch on the switchboard and at the isolating
switch at the water heater.
Note: When the electrical supply is switched on, there will be a knocking sound from the heat pump for a
short period of time. This is the electronic expansion valve operating. This is normal and not a fault with
the heat pump.
•
Turn the water heater “On” at the Display Panel.
Refer to “Turn the Water Heater “On” at the Display Panel” on page 17.
•
Set the Clock on the Water Heater, and if required, set the Timer period.
Refer to “Clock and Timer” on page 18.
The heat pump may take up to 5 minutes to commence operating when the power supply is switched on. The
heat pump will only operate when the water in the storage tank requires heating and power is available at the
water heater.
If the ambient air temperature is below -7°C or above 43°C and the system calls for heating, the heat pump
will not operate and the electric heating unit will operate instead.
When the heat pump is operating, the system may switch to the electric heating unit if it detects that the
ambient air temperature is below the minimum operating temperature of -7°C or above the maximum operating
temperature of 43°C. It may also switch back to heat pump operation from the electric heating unit if it detects
the ambient air temperature has moved back to within the heat pump’s operating temperature range.
Note: The heat pump may not turn on after having just completed a heating cycle and more hot water is drawn
from the water heater, or whilst the heat pump was operating and either power was switched off or it was
turned “Off” at the Display Panel. The heat pump may wait a few minutes before operating and the conditions
for start-up are favourable.
42
COMMISSIONING
It is important to wait for five minutes after the heat pump has activated to ensure it continues to operate and
is functioning correctly.
Explain to the householder or a responsible officer the functions and operation of the heat pump water heater.
Upon completion of the installation and commissioning of the water heating system, leave this guide with the
householder or a responsible officer.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation, such as on a building site or
where the premises are vacant, then:
•
Turn the water heater off at the Display Panel.
•
Switch off the electrical supply at the water heater isolating switch on the switchboard and at the isolating
switch at the water heater.
•
Close the cold water isolation valve at the inlet to the water heater.
Notes
•
The freeze 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 4.
•
If the power has been switched 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 43.
DRAINING THE WATER HEATER
Warning: Exercise care, as water discharged from the water heater may be of a very high temperature.
To drain the water heater:
•
Turn off the water heater.
Refer to “To Turn Off The Water Heater” on page 43.
•
Close all hot water taps.
•
Operate the relief valve lever - do not let the lever snap back or you will damage the valve seat. It is very
important the lever is raised and lowered gently.
Operating the lever will release the pressure in the water heater.
•
Undo the union at the cold water inlet to the water heater and attach a hose to the water heater side of
the union.
Let the other end of the hose go to a drain.
•
Open the relief valve by holding the lever in the raised position.
This will let air into the water heater and allow the water to drain through the hose.
43
MAINTENANCE, REPAIR, DECOMMISSIONING, DISPOSAL
WARNINGS
Be aware that the refrigerant used in this heat pump is flammable.
The refrigerant is R290 (Propane).
It may not contain an odour if it were to leak.
Only a person qualified in working with flammable refrigerants can access
the refrigerant circuit (sealed system) to: maintain, repair or service the heat
pump, or; to decommission the heat pump and dispose of the refrigerant.
The information in this section does not replace the Service Instructions for the Rheem 551E280 heat pump.
The Service Instructions should be referred to for the full and complete procedures for maintenance, repair,
decommissioning and disposal of the heat pump. This section is for information only.
WARNINGS – MAINTENANCE AND REPAIR WORK
If maintenance or repair of the sealed system containing the flammable refrigerant is required, then this service
work shall be undertaken by a person qualified in handling flammable refrigerants.
The following should be noted if this type of servicing is required:
•
The servicing shall occur in an open well ventilated area and remain well ventilated for the duration of the
service work.
Ensure the area is well ventilated before opening the sealed system or conducting any hot work. Any
accidentally released refrigerant should be able to disperse safely.
•
Be aware when a refrigerant leak is possible that malfunction of the heat pump may be caused by
refrigerant loss.
•
During repair work, when brazing is required, the following procedures shall be carried out:
◼
Evacuate the refrigerant circuit (sealed system) and remove the refrigerant.
◼
Purge the refrigerant circuit (sealed system) with nitrogen for five (5) minutes.
◼
Evacuate the refrigerant circuit (sealed system) again.
◼
Remove parts to be replaced by cutting, not by flame.
◼
Purge the braze point with nitrogen during the brazing procedure,
◼
Carry out a leak test before charging with refrigerant.
•
Reassemble sealed enclosures accurately. If seals are worn replace them.
•
Check safety equipment before recommissioning the heat pump into service.
GENERAL PRINCIPLES
Detection of Refrigerant
When searching for or detecting a refrigerant leak, potential sources of ignition shall not be used under any
circumstances.
An electronic leak detector may be used to detect refrigerant leaks if it has the sensitivity to do so and is
suitable for the detection of R290 refrigerant. The detector must not be a potential source of ignition. Leak
detection equipment shall be set at a percentage of the LFL of and be calibrated for R290 refrigerant.
Leak detection fluids are also suitable but the use of detergents containing chlorine shall be avoided as the
chlorine may react with the R290 and also corrode copper pipework.
If a leak is detected, all naked flames shall be removed / extinguished. If a leakage of refrigerant is found which
requires brazing, all refrigerant shall be recovered from the heat pump prior to repair work being conducted.
44
MAINTENANCE, REPAIR, DECOMMISSIONING, DISPOSAL
Evacuation and Removal of the Refrigerant
Conventional procedures shall be used if the refrigerant circuit (sealed system) is to be opened. Refrigerant
R290 is flammable, therefore the following procedure shall be followed:
◼
Evacuate the refrigerant circuit (sealed system) and remove the refrigerant.
◼
Purge the refrigerant circuit (sealed system) with nitrogen for five (5) minutes.
◼
Evacuate the refrigerant circuit (sealed system) again.
◼
Remove parts to be replaced by cutting, not by flame.
The refrigerant shall be recovered into the correct recovery cylinders. The sealed system shall be purged with
nitrogen to render the heat pump safe. This process may need to be repeated several times. Compressed air
or oxygen shall not be used for purging the refrigerant lines.
Purging shall be achieved by breaking the vacuum in the system with nitrogen and continuing to fill until the
working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process
shall be repeated until no refrigerant is within the system. When the final nitrogen charge is used, the system
shall be vented down to atmospheric pressure to enable service work to take place. This process is vital if
brazing operations on the pipe work are to take place.
The outlet of the vacuum pump must not be close to any potential ignition sources, and the point of discharge
is well ventilated.
Good practise is to be followed when removing refrigerant from the sealed system during servicing or
decommissioning to ensure all refrigerant is removed safely.
•
Only appropriate refrigerant recovery cylinders shall be used and labelled for R290 refrigerant.
•
A recovery cylinder shall be complete with pressure relief valve and associated shut-off valves in good
working order, evacuated and if possible, cooled before recovery occurs.
•
The recovery equipment shall be in good working order and suitable for the recovery of R290 refrigerant.
•
Hoses shall be complete with leak-free disconnect couplings and in good condition.
•
The recovery machine is to be checked to ensure it is in satisfactory working order, has been properly
maintained and that any associated electrical components are sealed to prevent ignition in the event of a
refrigerant release.
•
Calibrated weighing scales shall be available and in good working order.
Recovered refrigerant shall be disposed of correctly and a waste transfer note arranged. Do not mix
refrigerants in recovery cylinders.
Charging Procedure
Prior to recharging the sealed system, pressure test the system with nitrogen.
In addition to conventional charging procedures, the following should be noted:
•
Ensure the contamination of different refrigerants does not occur when using charging equipment. Hoses
and lines should be as short as possible to minimise the amount of refrigerant in them.
•
Charging cylinders shall be kept in an appropriate position according to their instructions.
•
Ensure the refrigerating system is earthed prior to charging the system with refrigerant.
•
If not already labelled, label the system when charging is complete.
•
Exercise extreme care so as not to overfill the refrigerating system.
Leak test the sealed system upon completion of the charging but prior to commissioning, and again after
commissioning prior to leaving the site.
45
MAINTENANCE, REPAIR, DECOMMISSIONING, DISPOSAL
Recovery of Compressor Oil
Good practise is to be followed when removing compressor oil during servicing or decommissioning to ensure
all oil is removed safely.
If the compressor or compressor oil are to be removed, ensure they have been evacuated of refrigerant to an
acceptable level to make certain no refrigerant remains within the lubricant. Only electric heating to the
compressor body shall be employed to accelerate the evacuation process. When oil is drained from a sealed
system, it shall be carried out safely. The evacuation procedure shall be carried out before disposing of the
compressor.
WARNINGS – DECOMMISSIONING AND DISPOSAL
At the end of the water heater’s life, the decommissioning and disposal of the heat pump shall be undertaken
by a person qualified in handling flammable refrigerants.
The following should be noted:
•
If the safety is affected when the heat pump is put out of service, the refrigerant charge shall be removed
before decommissioning.
•
The decommissioning shall occur in an open well ventilated area and remain well ventilated for the
duration of the decommissioning work.
Ensure the area is well ventilated before opening the sealed system or conducting any hot work. Any
accidentally released refrigerant should be able to disperse safely.
•
Be aware when a refrigerant leak is possible that malfunction of the heat pump may be caused by
refrigerant loss.
•
During decommissioning, the refrigerant is to be recovered and disposed of in accordance with governing
regulations.
◼
Evacuate the refrigerant circuit (sealed system) and remove the refrigerant.
◼
Purge the refrigerant circuit (sealed system) with nitrogen for five (5) minutes.
◼
Evacuate the refrigerant circuit (sealed system) again.
◼
Fill with nitrogen up to atmospheric pressure.
◼
Place a label on the heat pump that the refrigerant is removed.
•
Cut out the compressor and drain the oil.
•
Do not pierce or burn any components of the heat pump.
46
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48

INSTALLATION REPORT
Dear Installer / Customer
A copy of this installation report for the heat pump is to be attached to an STC Assignment Form (where
applicable) as proof of installation. It can be copied and kept for your records. An electronic version may be
provided by the installer instead.
Installer, please complete all details below
Owner’s Name
Installation Address
Suburb
Telephone
Home
State
Work
Postcode
Mobile
Email Address
Installing Company /
RSS / Agent
No. of Stories of Install
Installer’s Name
Installation Date
Type of Installation
(please circle)
Replace
Complete
Solar System
Replace
Solar
Tank
Replace
Electric
or Gas
Replace
Heat
Pump
New
Building
System Model No
System Type
Tank Model No
Tank Serial No
Electric Booster
(please circle)
Off Peak 1
(night)
Electric continuous
Single
Other
New Install on
Existing Building
(not replacing a unit)
Off Peak 2
(night & day)
Other
Other
If replacing a water heater, please give details
Brand
Model No
If a Rheem unit
Collector Serial No’s
Tank Serial No
1)
Electric
Date of manufacture
2)
3)
Comments
Signature:
Installer:
Customer:
Date
49
4)
Gas
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51
Revision Date: 2024 February
122360 Rev-01
52