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Table of Contents
- 1 Installation Instructions
- 2 Table of Contents
- 3 About Your Water Heater
- 4 Regular Care
- 5 Water Supplies
- 6 Save a Service Call
- 7 Installation
- 8 Typical Installation
- 9 Heat Pump and Tank Assembly
- 10 Connections - Plumbing
- 11 Connections - Electrical
- 12 Wiring Diagram
- 13 Commissioning
- 14 Draining the Water Heater
- 15 Warranty
- Download this manual
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Table of Contents
Related Manuals for Rheem MPi 551 Series
Summary of Contents for Rheem MPi 551 Series
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Page 1: Installation Instructions
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 account will depend on the tariff arrangement of the water heater replaced and where you live. - Page 5 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.
- 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. 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.
- Page 8 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.
- 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
“Temperature Pressure Relief Valve Running” 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. - Page 15 If a series of two (2) flashes occurs, the heat pump will not switch to backup heating mode. Phone Rheem Service or their nearest Accredited Service Agent to arrange for an inspection. If a single flash or a series of three (3) to nine (9) flashes occurs, the water heater will switch to backup heating mode to ensure a supply of hot water.
- Page 16 15 and to “Heat pump fault condition” on page 15. If the green LED is off and one of these conditions is not the cause, 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 account 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 TANK WATER SUPPLY If the water heater is supplied with water from a tank supply and a minimum water supply pressure of 200 kPa at the water heater cannot be achieved, then a pressure pump system must be installed to allow the heat pump circulator to operate and avoid air locks in the circuit.
- 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 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 551 325 551 410 Heat pump module 180550 HEAT PUMP DIMENSIONS - Maximum rated power input Tank model number T551 325...
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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 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 Quantity...
- Page 27 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 level slab or solid 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 a saddle clamp. ...
- 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 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 31 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 collar, from the bottom of the heat exchanger to the fitting in the bottom connection on the storage tank and marked “INLET”...
- Page 32 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 17 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 33 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 34 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 35 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. Refer to “Connections – Plumbing” on page 36. Water Supply: Turn on the cold water supply and fill the water heater.
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Page 36: 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: RP¾/20. - Page 37 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 38: 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 39: Wiring Diagram
CONNECTIONS – ELECTRICAL WIRING DIAGRAM THERMOSTAT BLUE COMPRESSOR LIGHT RED CAPACITOR CONTROL BLUE BOARD BLACK COMP-N COMP-A GREEN/YELLOW FAN-N FAN-A COMPRESSOR PUMP-N PUMP-A COMPRESSOR HEATER NEUTRAL PLUG ELEMENT BLACK NC NO EARTH BLUE BROWN BLUE BLACK GREEN/YELLOW GREEN/YELLOW T2 - Compressor Thermistor FAN PLUG T1 - Evaporator Thermistor CAPACITOR... -
Page 40: 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 41 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.
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Page 42: Draining The Water Heater
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 ... - Page 43 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 44: 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...