Owner’s Guide and Installation Instructions Air Sourced 310 Heat Pump Water Heater This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder.
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 – We recommend you read pages 4 to 17. The other pages are intended for the installer but may be of interest. About Your Water Heater ............................................................................................................ 4 Regular Care ................................................................................................................................ 9 Water Supplies......................................................................................
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 551 series model. The 551 310 model heat pump water heater is recommended for connection to a minimum 16 hour per day power supply.
ABOUT YOUR WATER HEATER HOW HOT SHOULD THE WATER BE? The system controls (compressor, evaporator and fan) will operate until a water temperature of approximately 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 booster 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.
ABOUT YOUR WATER HEATER OPERATING MODE MONITOR An operating mode monitor is located on the front of the heat pump module and houses a green and a red LED. The green LED, marked “NORMAL”, indicates the current operating mode (with the red LED off) of the heat pump water heater and the red LED, marked “ATTENTION”, may indicate a potential fault mode. The green LED will emit either a solid glow or a series of flashes, with a 2 second interval between each series.
ABOUT YOUR WATER HEATER MAINS PRESSURE The water heater is designed to operate at mains pressure by connecting directly to the mains water supply. If the mains supply pressure in your area exceeds that shown on page 20, a pressure limiting valve must be fitted. The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved. A minimum water supply pressure of 200 kPa is required to enable the heat pump circulator and heat pump system to operate effectively.
ABOUT YOUR WATER HEATER PRECAUTIONS Where damage to property can occur in the event of the water heater leaking, the water heater must be installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4 and all local codes and regulatory authority requirements. The water heater must be maintained in accordance with the Owner‟s Guide and Installation Instructions. Refer to “Regular Care” on page 9 and to “Anode Inspection and Replacement” on page 11.
REGULAR CARE MINOR SIX MONTH MAINTENANCE It is recommended minor maintenance be performed every six months by the dwelling occupant. The minor maintenance includes: Operate the easing lever on the temperature pressure relief valve. It is very important you raise and lower the lever gently. Refer to “Temperature Pressure Relief Valve” on page 10. Warning: Exercise care to avoid any splashing of water, as water discharged from the drain line will be hot.
REGULAR CARE TEMPERATURE PRESSURE RELIEF VALVE This valve is near the top of the water heater and is essential for its safe operation. It is possible for the valve to release a little water through the drain line during each heating period. This occurs as the water is heated and expands by approximately 1/50 of its volume. Continuous leakage of water from the valve and its drain line may indicate a problem with the water heater (refer to “Temperature Pressure Relief Valve Running” on page 16).
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.
WATER SUPPLIES 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. In areas where this is likely to occur, the installer should instruct the householder on how to dissipate the gas safely.
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 marked “HOT WATER” or “WATER HEATER” at the switchboard.
SAVE A SERVICE CALL HEAT PUMP IS NOT OPERATING Power must be available at the water heater and to the heat pump for the LEDs to glow or flash. If there is power to the water heater and the green LED is off or the red LED is flashing (other than 3 x red flashes with the green LED off, or a solid red glow, or a single red flash with a solid green LED), this indicates there may be a fault condition with the water heater. The red LED may emit up to seven (7) flashes in each series of flashes.
SAVE A SERVICE CALL or the red LED is flashing (other than 3 x red flashes with the green LED off, or a solid red glow, or a single red flash with a solid green LED) – the red LED may emit up to seven (7) flashes in each series of flashes. The green LED may also simultaneously flash or display a solid glow. The fault condition which led to the red LED flashing may be cleared after the backup heating cycle by the booster heating unit has completed.
SAVE A SERVICE CALL 1, 2, 4, 5, 6 or 7 x Red Flashes – Green LED Is Off If the red LED is flashing either 1, 2, 4, 5, 6 or 7 x red flashes and the green LED is off, the heat pump will not operate and the water will be heated by the booster heating unit in booster heating mode to ensure a supply of hot water. The boost capacity of the heating unit in booster heating mode is 220 litres and the water will be heated to 60°C.
SAVE A SERVICE CALL EXPANSION CONTROL VALVE RUNNING If an expansion control valve is fitted in the cold water line to the water heater (refer to page 32) it may discharge a small quantity of water instead of the temperature pressure relief valve on the water heater. The benefit is that energy is conserved as the discharged water is cooler. HIGHER THAN EXPECTED ELECTRICITY BILLS With the installation of your new air sourced heat pump water heater, maximum electrical energy savings can be achieved.
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 compliance with Standards AS/NZS 3500.4, AS/NZS 3000 and all local codes and regulatory authority requirements. In New Zealand, the installation must also conform with Clause G12 of the New Zealand Building Code.
INSTALLATION 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.
INSTALLATION 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 installation diagram (refer to diagram on page 32). 310 Model Relief valve setting 1000 kPa Expansion control valve setting * 850 kPa Max. mains supply pressure With expansion control valve 680 kPa Without expansion control valve 800 kPa Min.
INSTALLATION HOT WATER DELIVERY This water heater can deliver water at temperatures which can cause scalding. It is necessary and we recommend that a temperature limiting device be fitted between the water heater and the hot water outlets in any ablution area such as a bathroom or ensuite, to reduce the risk of scalding. The installing plumber may have a legal obligation to ensure the installation of this water heater meets the delivery water temperature requirements of AS/NZS 3500.
INSTALLATION CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A 551 310 model heat pump water heater should not be installed as part of a circulated hot water flow and return system in a building. If a circulated flow and return system is required, it is necessary to bypass the heat pump water heater and install a secondary water heater connected to the hot water flow and return line and supplied from the heat pump water heater.
INSTALLATION TYPICAL INSTALLATON – OUTDOOR LOCATION Installation (typical) - Outdoor Locations Heat Pump Air Sourced Electric Boosted Water Heater 23
INSTALLATION DIMENSIONS AND TECHNICAL DATA System number Model Number 1.8 kW Part numbers Dimensional Drawing 551 310 04 Tank only 1.8 kW T551 310 04 3.6 kW 551 310 07 T551 310 07 551 310 Heat Pump Air Sourced Electric Boosted Water Heater. 2.4 kW 551 310 05 Tank only 2.4 kW T551 310 05 Tank only 3.
HEAT PUMP AND TANK ASSEMBLY STORAGE TANK AND HEAT PUMP MODULE The heat pump water heater is made of two main components, the storage tank and the heat pump module. For transport and handling (weight) purposes both items are shipped separately and designed to be assembled at the installation site. The water heater must not be operated until both components are assembled. HEAT PUMP MODULE The heat pump module is to be mounted on the top of the storage tank.
HEAT PUMP AND TANK ASSEMBLY ASSEMBLY PROCEDURE Warning: The heat pump must be assembled, plumbed and filled with water prior to power being connected and switched on. The following procedure should be followed to properly lift, place and connect the heat pump module onto the storage tank: 1. Storage Tank: Remove all packaging including the carton base from the storage tank and position in its intended location, supported by a stable base.
HEAT PUMP AND TANK ASSEMBLY 3. Air Louvre Removal: Using a Phillips head screw driver, remove the six (6) screws from each of the two air louvres (twelve (12) screws in total). 4. Remove the louvres from the heat pump module. Electrical Cover: Remove the mounting screw from the side of the electrical cover. Gently remove the cover. The electrical cover needs to be handled gently so as not to damage the electronic controls located behind the electrical cover. Step 4 remove electrical cover 5.
HEAT PUMP AND TANK ASSEMBLY 6. Heat Pump Module Placement: Using two people, one person on each lifting bar, lift the heat pump module and place it on the top of the storage tank. It is recommended to place the hands under the bar to enable the lift in a curl action. Ensure the two water fittings on the storage tank pass through the openings marked “INLET” and “OUTLET” on the heat pump module chassis.
HEAT PUMP AND TANK ASSEMBLY 9. Inlet Flexible Braided Hose: Attach the flexible braided hose marked “INLET” to the water fitting marked “INLET”. Tighten the swivel nut on the hose using a 24 mm spanner. Push down the pipe seal ring to seat over the swivel nut and against the pipe seal cover. PIPE SEAL RING PIPE SEAL RING (SEATED DOWN) PIPE SEAL COVER INLET INLET Step 9 attach inlet water hose and seat pipe seal ring SK7138 - STEP10 INLET WATER FITTING 10.
HEAT PUMP AND TANK ASSEMBLY 11. Air Bleed Valve: Open the air bleed valve screw by rotating anticlockwise one turn. This will allow air to bleed from the circulator and flexible hose during the filling of the tank process. Leave the screw in this position. Ensure the screw is not removed, nor left screwed shut. ROTATE AIR BLEED VALVE SCREW ONE TURN ANTICLOCKWISE INSULATION Step 11 open air bleed valve screw by rotating one turn anticlockwise 12.
HEAT PUMP AND TANK ASSEMBLY POWER CONNECTOR IN POSITION power cable connection POWER CONNECTOR tank sensor connection POWER CABLE C CABLE TIE CABLE TIE BACKUP PLUG POWER CABLE TANK SENSOR CABLE TANK SENSOR CABLE PLUG BACKUP PLUG TANK SENSOR CABLE PLUG IN POSITION Steps 12, 13 and 14 connect power cable and tank sensor cable cable tie power cable 14.
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 conform with Clause G12 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.
CONNECTIONS – PLUMBING EXPANSION CONTROL VALVE Local regulations may make it 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 11). 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 diagram on page 32).
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. 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.
CONNECTIONS – ELECTRICAL BOOSTER HEATING UNIT AND THERMOSTAT FIGURE SETTING 3 - WIRING DIAGRAM FOR EWT The water heater has a booster heating unit and thermostat. The booster heating unit will be automatically activated during periods when the ambient air temperature falls below 5°C and heating of the water is required. The thermostat is not adjustable. FIGURE 3 - WIRING DIAGRAM FOR EWT WIRING DIAGRAM PUMP N.C. 2 E 3 N.O.
MULTIPLE INSTALLATIONS A multiple installation of Rheem heat pump water heaters on a single manifold or multiple manifolds is ® possible, using the Equa-Flow manifold system, where large volumes of hot water is required. The EquaFlow principle will function with water heaters in line, around a corner or in rows back to back (refer to the diagrams on pages 37 to 38). The cold water and hot water manifolds must be designed to balance the flow from each water heater.
MULTIPLE INSTALLATIONS TYPICAL INSTALLATION – MULTIPLE HEAT PUMP WATER HEATERS TPR Valve Drain Line Common Discharge Point LEGEND MULTIPLE HEAT PUMP WATER HEATERS TYPICAL INSTALLATION INSTALLATION DIMENSIONS – MULTIPLE HEAT PUMP WATER HEATERS In Line Manifold Angle Manifold Back to Back Manifold Notes 1.
MULTIPLE INSTALLATIONS MANIFOLD ARRANGEMENT Hot Manifold Assembly Manifold Arrangement - Multiple Cold Manifold Assembly Installation Pump Water Heaters ManifoldHeat Arrangement - Multiple Installation Heat Pump Water Heaters 38
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. Close each tap as water flows freely from it. Check the pipe work for leaks.
COMMISSIONING DIAGNOSTIC FEATURES OF THE HEAT PUMP CONTROLLER An operating mode monitor is located on the front of the heat pump module and houses a green and a red LED. The green LED, marked “NORMAL”, indicates the current operating mode (with the red LED off) of the heat pump water heater and the red LED, marked “ATTENTION”, may indicate a potential fault mode. The green LED will emit either a solid glow or a series of flashes, with a 2 second interval between each series.
COMMISSIONING Notes Power must be available at the water heater and to the heat pump for the LEDs to glow or flash. Solid Red or 3 x Red Flashes (Green LED Off) – If the power supply to the water heater is on and the green LED is off and the red LED is emitting a solid glow or three (3) flashes, this does not necessarily mean there may be a fault with the water heater but is indicating the water heater is operating outside of the heat pump‟s operating range.
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RHEEM HEAT PUMP WATER HEATER WARRANTY - AUSTRALIA ONLY HEAT PUMP WATER HEATER MODEL 551310 1. THE RHEEM WARRANTY – GENERAL 1.1 This warranty is given by Rheem Australia Pty Limited ABN 21 098 823 511 of 1 Alan Street, Rydalmere New South Wales. 1.2 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 HEAT PUMP WATER HEATER WARRANTY - AUSTRALIA ONLY HEAT PUMP WATER HEATER MODELS 551310 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3.
