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Rheem 551180 Owner's Manual And Installation Instructions

Heat pump water heaters
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Owner's Guide
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Installation Instructions
Air Sourced 551180
Heat Pump Water Heaters
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.

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Summary of Contents for Rheem 551180

  • Page 1 Owner’s Guide Installation Instructions Air Sourced 551180 Heat Pump Water Heaters This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder.
  • Page 2 TRADE MARKS ® Registered trademark of Rheem Australia Pty Ltd and / or Rheem New Zealand Limited. ™ Trademark of Rheem Australia Pty Ltd and / or Rheem New Zealand Limited. Note: Every care has been taken to ensure accuracy in preparation of this publication.

  • Page 3: Table Of Contents

    Rheem warranty. We recommend you read pages 8 to 27, and the terms of the Rheem warranty on pages 4 to 7. The other pages are intended for the installer but may be of interest.

  • Page 4: Warranty

    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.
  • Page 5 Rotorua, where high levels of atmospheric Sulphur Dioxide are present in the atmosphere. Rheem may reject a claim under this warranty in its sole discretion if a third party solar diverter is connected to the water heater.
  • Page 6 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:...
  • Page 7 The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under the Australian Consumer Law.

  • Page 8: Safety, Warnings, Installation Notes

    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.
  • Page 9 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.
  • Page 10 SAFETY, WARNINGS, INSTALLATION NOTES 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.

  • Page 11: About Your Water Heater

    The model you have chosen is a 551180 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 of a minimum 16 hours per day may also be suitable.
  • Page 12 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. HOW HOT SHOULD THE WATER BE? The system controls (compressor, evaporator and fan) will operate until a water temperature of 60°C to 70°C is reached, depending maximum temperature set upon the Hot Water Temperature Set Point.
  • Page 13 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. •...
  • Page 14 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.

  • Page 15: Display Panel

    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.
  • Page 16 DISPLAY PANEL DISPLAY PANEL – DISPLAY ICONS AND SELECTION KEYS 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 Useable Water Quantity icon bars illuminate (if the water is hot).
  • Page 17 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 either the Average Water Temperature in the water heater or the Hot Water Temperature Set Point in degrees Celsius, depending upon the status of the water heater.
  • Page 18 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.
  • Page 19 DISPLAY PANEL 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.

  • Page 20: Maintenance Requirements

    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.
  • Page 21 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.

  • Page 22: Water Supplies

    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.
  • Page 23 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.
  • Page 24 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:...

  • Page 25: Save A Service Call

    “Fault Codes” If the fault reoccurs, a service call must be made. Refer to on page 18. Phone Rheem Service or their nearest Accredited Service Agent / Centre to arrange for an inspection.
  • Page 26 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.
  • Page 27 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.

  • Page 28: Installation

    16 hours per day 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.
  • Page 29 INSTALLATION 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.
  • Page 30 Two (2) Seismic Strap constraints for the 551180 model are to be installed around the 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 front cover and outer casing.
  • Page 31 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.
  • Page 32 INSTALLATION HOT WATER DELIVERY Warning: This water heater can deliver hot water at temperatures up to 70°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 Clause 12 of the New Zealand Building Code so that heated water delivered to fixtures and appliances used primarily for personal...
  • Page 33 INSTALLATION DIMENSIONS AND TECHNICAL DATA Dimensions Model 551180 There is a minimum clearance of 80 mm from a wall behind the water heater...
  • Page 34 2400 Maximum power input @ 240 V watts 3500 Technical data is Electrical circuit Amps subject to change Heat Pump 551180 Performance Specifications Ambient Air Relative Average Heat Pump Recovery Rate Average Coefficient of Temperature Humidity Heating Capacity (kW) @ 45°C rise (L / hr)
  • Page 35 15°C to 60°C in one hour. TYPICAL INSTALLATION – OUTDOOR LOCATION “Seismic Note: In New Zealand, the 551180 model requires two (2) seismic straps to be installed. Refer to Restraint” on page 30 for additional information and seismic strap positioning.

  • Page 36: Connections - Plumbing

    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 •...
  • Page 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.
  • Page 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.

  • Page 39: Connections - Electrical

    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.
  • Page 40 CONNECTIONS – ELECTRICAL TIMER A timer can allow the hours of operation of the water heater to be set. 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. A timer will affect the operating times of both the heat pump circuit and the electric heating unit.

  • Page 41: Commissioning

    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). •...

  • Page 42: Draining The Water Heater

    • Damage caused by freezing due to the unavailability of power at the water heater is not covered by the Rheem warranty. “Terms of the Rheem Warranty” Refer to 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.
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  • Page 45: Installation Report

    Off Peak 2 Electric continuous Other (please circle) (night) (night & day) If replacing a water heater, please give details Brand Model No Electric If a Rheem unit Tank Serial No Date of manufacture Collector Serial No’s Comments Signature: Installer: Customer: Date...
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  • Page 47 This page is intentionally blank.
  • Page 48 Revision Date: 2023 December 121916 Rev-02...

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