EverHot 251E280 Owner's Manual And Installation Instructions
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EverHot 251E280 Owner's Manual And Installation Instructions

Air sourced heat pump water heater
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Owner's Guide
and
Installation Instructions
Air Sourced 251E280
Heat Pump Water Heater
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 EverHot 251E280

  • Page 1 Owner’s Guide Installation Instructions Air Sourced 251E280 Heat Pump Water Heater This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder.
  • Page 2 An electronic copy of these Owner’s Guide and Installation Instructions can be downloaded from rheem.com.au. 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 ®...

  • Page 3: Table Of Contents

    Everhot warranty. We recommend you read pages 7 to 29, and the terms of the Everhot warranty on pages 4 to 6. 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 Everhot 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 2.10 If the water heater is not sized to supply the hot water demand in accordance with the guidelines in the Everhot water heater literature, any resultant fault will not be covered by the Everhot warranty. 3. WHAT IS COVERED BY THE EVERHOT WARRANTY...
  • Page 6 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 Everhot warranty (set out above) is in addition to any rights and remedies that you may have under the Australian Consumer Law.

  • Page 7: Safety, Warnings, Installation Notes

    The water heater must not be operated unless each of these devices is fitted and is in working order. The Everhot 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.
  • Page 8 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 9 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.

  • Page 10: About Your Water Heater

    The model you have chosen is a 251E280 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 11 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 heat pump is designed to operate until a water temperature of 60°C is reached.
  • Page 12 ABOUT YOUR WATER HEATER PRECAUTIONS The water heater must be maintained in accordance with the Owner’s Guide and Installation Instructions. Refer “Maintenance Requirements” “Anode Inspection and Replacement” on page 22 and to 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.
  • Page 13 ABOUT YOUR WATER HEATER 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.

  • Page 14: 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 15 DISPLAY PANEL DISPLAY PANEL – DISPLAY ICONS AND SELECTION KEYS...
  • Page 16 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 gone out and become dark..
  • Page 17 DISPLAY PANEL TURNING THE WATER HEATER “ON” OR “OFF” AT THE DISPLAY PANEL Turn the water heater “On” at the Display Panel • When the water heater is “Off” at the Display Panel, press the “On / Off” key to turn the water heater “On” at the Display Panel.
  • Page 18 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...
  • Page 19 DISPLAY PANEL • 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. •...
  • Page 20 DISPLAY PANEL To set the Timer 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”...
  • Page 21 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.

  • Page 22: Maintenance Requirements

    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.
  • Page 23 Note: The major service and routine replacement of any components, such as the anode and relief valve(s), are not included in the Everhot 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).

  • Page 24: Water Supplies

    If an incorrect colour coded anode is used in the water heater, any resultant faults will not be covered by the Everhot warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the water heater cylinder.
  • Page 25 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 Everhot warranty does not apply to a copper sheathed heating unit. A corrosion resistant heating unit must be used for the Everhot warranty to apply to the heating unit.
  • Page 26 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 Everhot warranty will not cover any resultant faults:...

  • Page 27: Save A Service Call

    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) •...
  • Page 28 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. “Turning the Water Heater “On”...
  • Page 29 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: •...

  • Page 30: Installation

    16 hours per day may also be suitable. An Everhot 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...
  • Page 31 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.
  • Page 32 If an incorrect colour coded anode is used in the water heater, any resultant faults will not be covered by the Everhot warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the water heater cylinder.
  • Page 33 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 Everhot warranty.
  • Page 34 INSTALLATION DIMENSIONS AND TECHNICAL DATA Dimensions Model 251E280 There is a minimum clearance of 25 mm from a wall behind the water heater...
  • Page 35 10°C to 60°C water temp Maximum rated power input @ 240 V watts 3100 Electrical circuit Amps Technical data is subject to change Heat Pump 251E280 Performance Specifications Ambient Air Relative Average Heat Pump Recovery Rate Average Coefficient of Temperature...
  • Page 36 INSTALLATION TYPICAL INSTALLATION – OUTDOOR LOCATION...

  • Page 37: 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. CONNECTION SIZES • Hot water connection: Rp 3/4 • Cold water connection: Rp 3/4 •...
  • Page 38 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 39 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 40: Connections - Electrical

    The 251E280 model 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 of a minimum 16 hours per day may also be suitable.
  • Page 41 CONNECTIONS – ELECTRICAL 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.

  • Page 42: 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 43: Draining The Water Heater

    • Damage caused by freezing due to the unavailability of power at the water heater is not covered by the Everhot warranty. “Terms of the Everhot 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.

  • Page 44: Maintenance, Repair, Decommissioning, Disposal

    The information in this section does not replace the Service Instructions for the Everhot 251E280 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.
  • Page 45 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. ◼...
  • Page 46 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.
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  • Page 49: 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 an Everhot, Rheem or Tank Serial No Date of manufacture Vulcan unit Comments Signature: Installer: Customer: Date...
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  • Page 52 Revision Date: 2024 June 121930 Rev-02...

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