Owner’s Guide and Installation Instructions Air Sourced Heat Pump Water Heater MPi 554 Series 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 18. The other pages are intended for the installer but may be of interest. About Your Water Heater ............................................................................................................ 4 Regular Care .............................................................................................................................. 10 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 RheemPlus 554 series model. The 554 325 model water heater is recommended for connection to a minimum 16 hour per day power supply.
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 21, 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 SAFETY This water heater is supplied with a thermostat, two over-temperature energy cut-outs, a combination temperature pressure relief valve and a temperature limiting 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 operation of the over-temperature cut-out on the thermostat indicates a possibly dangerous situation.
ABOUT YOUR WATER HEATER Notes: Power must be available at the water heater and to the heat pump for the LEDs to glow or flash. When power is turned on or reconnected to the water heater, the red LED will emit a solid glow for three (3) seconds and then extinguish. This is normal operation and does not indicate a fault. The LED display will then return to the current operational status.
ABOUT YOUR WATER HEATER TIMER CONTROL A timer can be installed in the electrical circuit to the water heater. The timer must be weatherproof if it is installed outdoors. 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. A timer will affect the operating times of both the heat pump circuit and the booster heating unit.
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 10 and to “Anode Inspection and Replacement” on page 12.
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 11. Warning: Exercise care to avoid any splashing of water, as water discharged from the drain line will be hot.
REGULAR CARE 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. 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.
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 (if one is installed) at the water heater and ensure they are turned on.
SAVE A SERVICE CALL HEAT PUMP IS NOT OPERATING There must be power available at the water heater and to the heat pump for the heat pump to operate and for the LEDs to glow or flash. Time controlled power supply (no power at the water heater) If the water heater is connected to a time controlled power supply, then during periods of no power supply at the water heater the LEDs will be off. This is not a fault condition, but a result of no power being available to energise the LEDs.
SAVE A SERVICE CALL Backup heating mode and series of red flashes During the backup heating mode by the booster heating unit, caused by either the thermal cut out activating or a heat pump fault condition, the red LED will emit a series of flashes. At the completion of a heating cycle by the booster heating unit in the backup heating mode and the water temperature reaches 70°C, the thermostat controlling the booster heating unit opens circuit cutting power to the heat pump causing the red LED to go out.
SAVE A SERVICE CALL TEMPERATURE PRESSURE RELIEF VALVE RUNNING Normal Operation It is normal and desirable this valve allows a small quantity of water to escape during the heating cycle. However, if it discharges more than a bucket full of water in 24 hours, there may be another problem. Continuous dribble Try gently raising the easing lever on the relief valve for a few seconds (refer to “Temperature Pressure Relief Valve” on page 11).
SAVE A SERVICE CALL 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 louvres and outlet grille 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 34). Model 325, 410 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 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.
INSTALLATION DIMENSIONS AND TECHNICAL DATA WALL 100 AIR INLET L AIR OUTLET 574 C 30 0M H IN IN 0M 30 AIR INLET TPR VALVE VENTILATION CLEARANCE 245 K CONDENSATE DRAIN B M HOT OUTLET AIR INLET A 30 0 M IN VENTILATION CLEARANCE D AIR OUTLET 1018 871 ELECTRICAL CONNECTION F 546 COLD INLET E System number Tank model number Storage capacity Boost capacity 1.8 kW 2.4 kW*, 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. The heat pump storage tank and module must be installed on a level slab or solid base of a minimum 900 mm wide x 650 mm deep.
HEAT PUMP AND TANK ASSEMBLY KIT There is a kit supplied with the heat pump module (PN 080199) and a kit supplied with the 410 model heat pump storage tank (PN 290122). The components supplied in the kit and required for the installation are: Part No Kit Components and Description 080199 Kit Installation Heat Pump Module Integrated Quantity 126558 Installation instructions heat pump module integrated 1 052158 Saddle clamp 20 mm Clipsal 261/20 1 080021 Screw phillips pan head No.
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 place the heat pump module in position and connect to the storage tank: 1. Heat Pump Storage Tank: Remove all packaging including the carton base from the heat pump storage tank and position in its intended location, supported by a level slab or solid base.
HEAT PUMP AND TANK ASSEMBLY 4. Lower Front Cover: Refit the lower front cover. Step 4 refit lower front cover Step 5 remove tape from tank sensor cable 5. Tank Sensor Cable: Remove tape from tank sensor cable and unfurl. 6. Foam Tape: (410 litre storage tank only) – Retrieve the length of foam tape from the kit supplied with the 410 storage tank. The foam tape is to be applied to the bottom at the front of the 410 litre storage tank.
HEAT PUMP AND TANK ASSEMBLY 8. Cover Strip: (410 litre storage tank only) – Retrieve the length of rubber cover strip from the kit supplied with the 410 storage tank. Line up one end of the cover strip with one end of the heat pump housing black top, fitting the strip over the lip of the housing, ensuring the jacket is hard up against the lip of the heat pump housing. The cover strip will hold the jacket in position. Apply the cover strip along the full length of the lip of the heat pump housing.
HEAT PUMP AND TANK ASSEMBLY 12. Flexible Braided Hoses: Retrieve the loose ends of the two flexible braided hoses from within the heat pump module, and withdraw through the rear of the heat pump module. 13. Cold Hose Connection: Attach the flexible braided hose, marked with a blue collar, from the bottom of the heat exchanger to the fitting in the bottom connection on the storage tank and marked “INLET” in blue. Tighten the swivel nut on the hose using a 24 mm spanner. Tape or sealant is not required.
HEAT PUMP AND TANK ASSEMBLY 16. Studs: Retrieve the three (3) studs from the kit and screw into the three (3) threaded inserts on the side of the tank closest to the wall. These studs will assist in aligning the heat pump module for connection to the storage tank. Step 16 screw in studs into threaded inserts 17. Position Heat Pump Module: Position the heat pump module against the tank. Engage the tab at the bottom of the heat pump module, on the wall side of the module, into the slot in the tank.
HEAT PUMP AND TANK ASSEMBLY 20. Fixing Bolts: Screw in the three fixing bolts to connect the front side of the heat pump module to the storage tank.
HEAT PUMP AND TANK ASSEMBLY 21. Tank Sensor Cable Connection: Insert the tank sensor cable plug to the connector on the underside of the control box. The plug is polarised and can only be inserted one way. Ensure the plug fully engages the locking feature on the connector. 22. Power Cable Connection: Insert the four pin power cable plug to the connector on the underside of the control box. The plug is polarised and can only be inserted one way.
HEAT PUMP AND TANK ASSEMBLY 26. Heat Pump Module Cover: Replace the front module cover and re-fit the two screws. Step 26 replace heat pump module front cover Step 27 remove screws from electrical cover 27. Electrical Cover: Remove the two screws securing the electrical cover, adjacent to the temperature limiting valve cover, to the storage tank. Remove the electrical cover from the storage tank. Step 28 connect wiring to terminal block Step 29 refit electrical front cover 28.
CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in accordance with the requirements of 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: G ¾ B. Cold water connection: G ¾ B. Relief valve connection: RP½/15.
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 12). 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 34).
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 WIRING DIAGRAM LEGEND Active Low Voltage Active Return Low Voltage Neutral Low Voltage Capacitor Low Voltage Earth Low Voltage Thermistor / LED Display Extra Low Voltage BLUE THERMOSTAT S R BLACK GREEN/YELLOW BLUE LIGHT RED BLACK BROWN BLUE LIGHT RED COMPRESSOR COMPRESSOR PLUG M 1 BROWN 3 BLUE 4 GREEN/YELLOW 2 BLACK HEATER ELEMENT FAN F COMPRESSOR CAPACITOR F RED CABLING INSIDE TANK JACKET BLUE PUMP GREEN/YELLOW COMP-A FAN-N FAN-A PUMP-N PUMP-A NEUTRAL R
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 and the connection points for the flexible braided hoses for leaks.
COMMISSIONING OUTLET TEMPERATURE COMPENSATION ADJUSTMENT – RHEEMPLUS The maximum outlet temperature of a RheemPlus water heater may be adjusted to compensate for temperature losses in the pipe work between the water heater outlet and sanitary fixtures. Warning: After adjustment of the temperature limiting valve, the water temperature MUST NOT exceed 50°C from the first tap in the hot water pipe work after the water heater used for personal hygiene purposes, such as in a bathroom or ensuite.
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 of the heat pump water heater and the red LED, marked “ATTENTION”, indicates a fault mode. The green LED will emit either a constant glow or a series of flashes, with a 2 second interval between each series. A series of long green flashes may also be emitted.
COMMISSIONING Possible fault condition There may be a fault condition with the water heater if either: there is power available at the water heater and the green LED is off, and the water heater has not operated outside of the heat pump‟s operating range – refer to “Heat pump operating range” on page 15. Before phoning to arrange a service inspection due to the green LED being off, refer to “Heat Pump Is Not Operating” on page 15 in the “Save A Service Call” section of this Owner‟s Guide.
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 38). Close all hot water taps. Operate the relief valve release lever - do not let the lever snap back or you will damage the valve seat. Operating the lever will release the pressure in the water heater. Undo the union at the cold water inlet and attach a hose.
RHEEM HEAT PUMP WATER HEATER WARRANTY - AUSTRALIA ONLY HEAT PUMP WATER HEATER MODELS 554325, 554410 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 554325, 554410 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3.
