Related Manuals for Rheem MPi 551 Series
Summary of Contents for Rheem MPi 551 Series
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Page 1: Water Heater
Owner’s Guide Installation Instructions Air Sourced Heat Pump Water Heater MPi 551 Series This water heater must be installed and serviced by a qualified person. Please leave this guide with the householder. - Page 2 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.
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Page 3: Table Of Contents
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 ........................... 12 Save A Service Call ........................14 Installation .......................... -
Page 4: About Your Water Heater
24 hour per day power supply. A Rheem heat pump water heater consumes less energy than an electric water heater. The impact on an electricity bill 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. - Page 5 ABOUT YOUR WATER HEATER FREEZE PROTECTION The water heater has a freeze protection system. The freeze protection system will protect the water heater from damage, by preventing ice forming in the waterways of the water heater, in the event of freezing conditions occurring.
- Page 6 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 to arrange for an inspection.
- Page 7 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. Time controlled power supply (power must be available 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.
- Page 8 ABOUT YOUR WATER HEATER TO TURN OFF THE WATER HEATER If you plan to be away from home for only a few nights, we suggest you leave the water heater switched on. If it is necessary to turn off the water heater: Switch off the electrical supply at the isolating switch to the water heater.
- Page 9 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 to arrange for an inspection.
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Page 10: Regular Care
Note: The five year 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 11 If water does not flow freely from the drain line when the lever is heater lifted, then the water heater must be checked. Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection. lift until water...
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Page 12: 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 13 Where the pH is less than 6.0 the Rheem warranty does not apply to the water heater. pH is a measure of whether the water is alkaline or acid. In an acidic water supply, the water can attack stainless steel parts and cause them to fail.
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Page 14: Save A Service Call
Refer to on page 17. Water heater size Do you have the correct size water heater for your requirements? The sizing guide in the sales literature and on the Rheem website (www.rheem.com.au) suggests average sizes that may be needed. 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. - Page 15 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 (green and red LEDs are off) 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.
- Page 16 If the red LED then recommences to flash after the 27 second period, the fault condition which led to the red LED flashing may not have cleared and there may be a problem with the heat pump. Count the number of red flashes and phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection.
- Page 17 Heavy flows of hot water 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 to arrange for an inspection.
- Page 18 Prolonged periods of use when the ambient air temperature is outside of the heat pumps operating range will increase the amount of boosting and increase running costs. IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE, PHONE RHEEM SERVICE OR THEIR NEAREST ACCREDITED SERVICE AGENT.
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Page 19: Installation
The 551 410 model water heater is recommended for connection to a 24 hour per day power supply. A Rheem heat pump water heater consumes less energy than an electric water heater. The impact on an electricity bill will depend on the tariff arrangement of the water heater replaced and the installation location. - Page 20 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.
- Page 21 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 37). 325, 410 Model Relief valve setting...
- Page 22 INSTALLATION CIRCULATED HOT WATER FLOW AND RETURN SYSTEM An MPi 551 series 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.
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Page 23: Typical Installation
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 24: Heat Pump Dimensions
INSTALLATION DIMENSIONS AND TECHNICAL DATA WALL AIR INLET OUTLET VENTILATION VALVE INLET CLEARANCE CONDENSATE DRAIN OUTLET AIR INLET VENTILATION CLEARANCE OUTLET 1018 ELECTRICAL CONNECTION COLD INLET System number Heat pump module 551 325 551 410 182550 HEAT PUMP DIMENSIONS Maximum rated power input Tank model number T551 325 T551 410... -
Page 25: Heat Pump And Tank Assembly
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. - Page 26 HEAT PUMP AND TANK ASSEMBLY There is a kit (PN 299276) supplied with the heat pump module 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 Quantity...
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Page 27: Heat Pump Dimensions
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: 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 stable base. - Page 28 HEAT PUMP AND TANK ASSEMBLY Mains Power Connection: Connect the mains power supply wiring to the terminal block and earth connection inside of the lower front cover. Secure the conduit to the side of the storage tank with the saddle clamp and screws provided. ...
- Page 29 HEAT PUMP AND TANK ASSEMBLY 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. The ends of the foam tape are to line up with the two vertical slots in the jacket.
- Page 30 HEAT PUMP AND TANK ASSEMBLY Fan Cover Shroud: Retrieve the fan cover shroud, 20 mm screw and black plastic plug from the kit bag. Remove the screw located immediately above the monitor label on the front of the heat pump ...
- Page 31 HEAT PUMP AND TANK ASSEMBLY 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 ...
- Page 32 HEAT PUMP AND TANK ASSEMBLY 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. Cold Hose Connection: Attach the flexible braided hose, marked with a blue stripe through the braid and attached to the bottom of the heat exchanger, to the ball valve fitting in the bottom connection on the storage tank and marked “TO HEAT PUMP”.
- Page 33 HEAT PUMP AND TANK ASSEMBLY Cable Tab: Remove the tab on the side of the electrical entry to the heat pump module to accommodate the electrical conduit. Pliers or tin snips may be required to remove the tab. Step 18 remove the tab on the side of the electrical entry to the heat pump module 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.
- Page 34 HEAT PUMP AND TANK ASSEMBLY 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. Align the holes in the side of the heat pump module over the three studs.
- Page 35 HEAT PUMP AND TANK ASSEMBLY 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. ...
- Page 36 HEAT PUMP AND TANK ASSEMBLY Water Connections: Connect the cold water supply and the hot water pipe work to the water heater. Connect the temperature pressure relief valve and its drain line. “Connections – Plumbing” Refer to on page 37. Water Supply: Turn on the cold water supply and fill the water heater.
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Page 37: Connections - Plumbing
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: Rp 3/4. - Page 38 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”...
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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. 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. - Page 40 CONNECTIONS – ELECTRICAL BOOSTER HEATING UNIT AND THERMOSTAT SETTING 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 is outside the heat pump‟s operating temperature range of between a minimum of 3°C to 5°C and maximum of 45°C to 55°C and heating of the water is required.
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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). Open the cold water isolation valve fully to the water heater. - Page 42 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 “Terms of the Rheem Warranty” Rheem warranty (refer to on page 47).
- Page 43 COMMISSIONING Notes: There is no 2 x red flash indicator or fault mode code. Power must be available at the water heater and to the heat pump for the LEDs to glow or flash. Time controlled power supply (power must be available 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.
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Page 44: Draining The Water Heater
COMMISSIONING SYSTEM RESET To reset the system and override the forty five (45) minute start delay: Press and hold the red controller reset button for two (2) to three (3) seconds until both the green and red LEDs display a solid glow. Release the button. The reset button is located on the front left corner of the underside of the controller box. - Page 45 This page is intentionally blank.
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- Page 47 2.1 The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion. 2.2 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.
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Page 48: Warranty
3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3.1 Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance with its specifications as...