Rheem MPi 551 Series- Manuals

INSTALLATION 5 Care must be taken during transportation and handling. Do not lay the heat pump module down and do not tilt the heat pump module or the heat pump and storage tank assembly more than 30° from the vertical . This will displace the compressor lubricating oil. If the heat pump module or h...

INSTALLATION 6 MAINS WATER SUPPLY Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting valve is required. Refer to the Owner‟s Guide and Installation Instructions supplied with the storage tank for the position of the pressure limiting valve. Mod...

INSTALLATION 7 WARNING This water heater is only intended to be operated by persons who have the experience or the knowledge and the capabilities to do so. This water heater is not intended to be operated by persons with reduced physical, sensory or mental capabilities i.e. the infirm, or by childre...

INSTALLATION 8 DIMENSIONS AND TECHNICAL DATA A D 1018 H 574 HOT OUTLET COLD INLET E 546 871 B K 245 100 WALL AIR INLET AIR INLET C AIR OUTLET 300 MI N VENTILATION CLEARANCE CONDENSATE DRAIN TPR VALVE AIR INLET AIR OUTLET 300 M IN F HEAT PUMP DIMENSIONS - 325 & 410 INTERGRATED ELECTRICAL CONNECTI...

INSTALLATION 10 TYPICAL INSTALLATION – OUTDOOR LOCATION TYPICAL INSTALLATION HEAT PUMP WATER HEATER - 325L

11 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....

HEAT PUMP AND TANK ASSEMBLY 12 storage tank heat pump module heat pump water heater 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: 08...

HEAT PUMP AND TANK ASSEMBLY 13 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 AND TANK ASSEMBLY 14 2. Lower Front Cover: Remove the two screws securing the lower front cover to the storage tank.  Remove the lower front cover from the storage tank. Step 2 Step 3 remove screws withdraw the power cable from lower front cover 3. Power Cable: Withdraw the power cable, h...

HEAT PUMP AND TANK ASSEMBLY 15 4. 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. The saddle clamp must be positioned over the pilot hol...

HEAT PUMP AND TANK ASSEMBLY 16 5. Lower Front Cover: Refit the lower front cover. Step 5 Step 6 refit lower front cover remove tape from tank sensor cable 6. Tank Sensor Cable: Remove tape from tank sensor cable and unfurl.

HEAT PUMP AND TANK ASSEMBLY 17 7. 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 tw...

HEAT PUMP AND TANK ASSEMBLY 18 9. 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 housin...

HEAT PUMP AND TANK ASSEMBLY 19 10. Heat Pump Module Cover: Remove the two screws securing the front cover to the heat pump module.  Remove the front cover from the heat pump module. Step 10 and 12 remove front cover from heat pump module and feed through cables 11. Position Heat Pump Module: Positi...

HEAT PUMP AND TANK ASSEMBLY 20 14. 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 spann...

HEAT PUMP AND TANK ASSEMBLY 21 15. Hot Hose Connection: Attach the flexible braided hose, marked with a red collar, from the top of the circulator to the fitting in the top connection on the storage tank and marked “OUTLET” in red.  Tighten the swivel nut on the hose using a 24 mm spanner. Tape or ...

HEAT PUMP AND TANK ASSEMBLY 22 17. 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 18...

HEAT PUMP AND TANK ASSEMBLY 23 19. 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....

HEAT PUMP AND TANK ASSEMBLY 24 23. 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. 24. Power Cable Conne...

HEAT PUMP AND TANK ASSEMBLY 25 25. Positioning of Water Heater: Complete final positioning of the water heater. Ensure the heat pump module is firmly seated on the level slab or solid base. 26. Water Connections: Connect the cold water supply and the hot water pipe work to the water heater.  Connec...

26 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 w...

CONNECTIONS – ELECTRICAL 27 WIRING DIAGRAM PUMP PLUG COMPRESSOR PLUG FAN PLUG CONTROL BOARD ENCLOSURE REMOTE LED DISPLAY Remote LED Display BLACK BROWN BLUE BLUE BLUE BLUE BLUE BLACK BLACK BLACK BLACK BLACK RED GREEN/YELLOW RED WHITE RED GREEN/YELLOW GREEN/YELLOW BLACK GREEN/YEL LOW BR OWN BLACK LIG...

28 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 iso...

COMMISSIONING 29 Note: The heat pump may not turn on after either having just completed a heating cycle and more hot water is drawn from the water heater or power is shut down to the compressor, either during or at the end of a heating cycle. The heat pump will wait until the compressor has cooled d...

COMMISSIONING 30 The modes are: Flashes Operational Modes solid green (remains on) Standby mode – water is hot 1 x green Call for heating received – system checks performed Note: unit may wait and continue flashing until compressor has cooled from its last operation 2 x green Circulator commences ci...

COMMISSIONING 31 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. This is not a fault condition, but a result of no power bei...

32 WATER SUPPLIES This water heater must be installed in accordance with this advice to be covered by the manufacturer’s 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 ...

WATER SUPPLIES 33 CHLORIDE AND PH Where the chloride level exceeds 250 mg/L the manufacturer‟s warranty does not apply to the water heater. In a high chloride water supply, the water can corrode stainless steel parts and cause them to fail. Where the pH is less than 6.0 the manufacturer‟s warranty d...

35 WARRANTY NOTE The heat pump water heater is covered by the manufactu rer‟s warranty. For full manufacturer‟s warranty details, refer to the Owner‟s Guide and Installation Instructions supplied with the storage tank. The part extracts from the “Terms Of The Warranty And The Exclusions To It” of th...