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Rinnai REHP Series Installation And Operation Manual
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Rinnai REHP Series Installation And Operation Manual

Electric heat pump water heater
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Summary of Contents for Rinnai REHP Series

  • Page 2 5.14 Hot and Cold Pipe Insulation Installation ................23 5.15 Ducting Requirement ......................23 6. Operating Instruction ......................24 6.1 Start-Up Information ......................24 6.2 Operation ..........................25 6.3 Local Startup ...........................33 7. Care & Cleaning ........................34 7.1 Draining the Water Heater .....................34 Rinnai Electric Heat Pump Water Heater Manual...

  • Page 3: Table Of Contents

    9.1 CTA Module Wiring ........................ 42 9.2 Demand Response (CTA-2045) Installations ................43 9.3 Replacement Parts ......................... 44 9.4 Thermal Cut-off Reset Instructions ..................46 9.5 Wiring Diagram ........................47 9.6 Warranty ..........................48 Rinnai Electric Heat Pump Water Heater Manual...
  • Page 4 Thank you for purchasing a Rinnai Electric Heat Pump Water Heater. Before installing and operating this water heater, please read these instructions completely to familiarize yourself with the water heater’s features and functionality. This manual offers the installer essential recommendations and basic instructions for correctly installing and adjusting the water heater.
  • Page 5 145°F (63°C) Less than 3 seconds Indicates an imminently hazardous situation which, if not avoided, will result 150°F (65°C) About 1 1/2 seconds in personal injury or death. 155°F (68°C) About 1 second Rinnai Electric Heat Pump Water Heater Manual...
  • Page 6 ASSE heater was factory preset at 120°F (49°C) 1017, the Standard for Temperature before it was shipped. Actuated Mixing Valves for Hot Water Distribution Systems. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 7 • DO NOT connect other plumbing to the from a qualified service technician or your T&P plumbing; it must go directly to a local electric utility. suitable open drain. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 8 WARNING Before commencing maintenance, ensure that all power to the unit is disconnected. Neglecting to do so may lead to electrical shock, causing significant personal injury or even death. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 9 The liquid refrigerant is then directed to a filter dryer, followed by an expansion valve that diminishes the prevailing pressure. The refrigerant is subsequently guided back to the evaporator, initiating the cycle again. Figure 3 Rinnai Electric Heat Pump Water Heater Manual...
  • Page 10 Pipe Included Accessories • Optional Accessories The Rinnai Electric Heat Pump Water Heater is designed for indoor installation only. The appliance extracts heat from the ambient air and provides it to the water in the DHW tank with added electric power. The amount of...
  • Page 11 Temperature Rating Certifications NEEA, AHRI, ANSI, and UL Energy Star Certified Tank & All Other Parts & Components: 10 Years. Reasonable Labor: 1 Year. See Section 9.6, page 48 Warranty for Complete Details Rinnai Electric Heat Pump Water Heater Manual...
  • Page 12 DOCUMENTATION DRAINAGE PIPE • Installation and Operation Manual (this manual) PART #: 107000674 The following optional accessories are available for the Rinnai Electric Heat Pump Water Heater. Figure 7 LEAK KIT EHPWH DUCTING KIT PART #: 103000120 PART #: 103000119...
  • Page 13 Where such areas cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed Front Side under the water heater. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 14 Figure 11. Figure 11 Front View Top View No Additional Ventilation Needed: For room size: Larger than 700 ft (i.e. 7’ X 10’ 12” Max. X 10’). Illustrated in Figure 10. Door Rinnai Electric Heat Pump Water Heater Manual...
  • Page 15 A - Diameter of water Figure 13 heater plus 4” min. B - Maximum 2” The drain line should be at least 3/4” ID and pitched for proper drainage. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 16 Operating temperature range of cold (inlet) water is 48°F (9°C) to 110°F (43°C). • Operating pressure range is 43.5 psi (300 kPa) to 150 psi (1034 kPa). • Water flow rate should be from 0.88 gpm (0.2 m /h) to 3.08 gpm (0.7 m /h). Rinnai Electric Heat Pump Water Heater Manual...
  • Page 17 NOTICE The condensate produced by this unit is non-acidic and does not require a condensate neutralizer. Figure 14 Clamp Flexible Drainage Pipe Drainage Connection Rinnai Electric Heat Pump Water Heater Manual...
  • Page 18 (by gravity) of the relief valve and discharge pipe. The end of the discharge pipe should not be threaded or concealed and should be protected from freezing. No valve of any type, restriction or reducer coupling should be installed in the discharge piping. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 19 DO NOT operate the water heater again if it has been exposed to fire, flood, or physical damage, until it has been inspected by a qualified service technician. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 20 5. As shown in Figure 17, connect Line 1 (L1), Line 2 (L2) and ground wire on the terminal block. 6. Mount back the junction box cover. Junction Box Access Figure 16 Junction Box Cover CTA Adaptor (Not supplied) Conduit Connector 3 X Screws Rinnai Electric Heat Pump Water Heater Manual...
  • Page 21 NOTE: When sizing the breaker and wire for over current protection, include an additional 500W to the upper element wattage rating. This will account for the maximum amperage draw of the compressor and fan motor. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 22 • DO NOT conceal the Controller Assembly, T&P valve, or drain valve. • Frequently inspect the insulation blanket. Figure 18 Horizontal Air Filter (20” Clearance recommended on top) Display & Controller Air Outlet Opening Rinnai Electric Heat Pump Water Heater Manual...
  • Page 23 Please refer a separate instructions provided with EHPWH Ducting Kit - 103000120 (Accessory) for all ducting requirements. NOTICE DO NOT skip the ducting requirement document if any kind of ducting is installed. Ducting installation must follow all ducting requirements as mentioned in the separate instructions. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 24 After activation, it requires manual resetting. Refer Section 9.4, page 46 for resetting instructions. CAUTION A qualified service technician must investigate the cause of high-temperature and take corrective actions before putting the water heater back into operation. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 25 The control logic of the Control Assembly is designed so that the heat pump will always have priority over the elements. The temperature regulation will not be performed until after Dry- Fire detection testing indicates that there is sufficient water in the tank. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 26 Figure 20 Display Operation Figure 21 shows all the available icons on the display. Refer Table 6 for detailed explanation of each icon. Figure 21 Rinnai Electric Heat Pump Water Heater Manual...
  • Page 27 (it is recommended that users set this mode after 7 days of regular and normal operation of the water heater to avoid affecting the normal use of the water heater by failing to record the complete user habits.) Rinnai Electric Heat Pump Water Heater Manual...
  • Page 28 Figure 22 Any pressing of button is effective only under button and display in unlocked state. (refer child lock function to unlock button/display as shown in Table 8) Rinnai Electric Heat Pump Water Heater Manual...
  • Page 29 When setting clock/timer, press more than 1s, clock/timer value increases continuously. • When setting vacation days, press more than 1s, day value increases continuously. • On querying, check items show up by pressing it. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 30 It is used to copy selection and paste in combination with other buttons to complete the function. Power on/off button Press the button to turn the device on or off. Small red led indicated if the device is on/off. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 31 It is used to restore timer to default values and can be used to delete other selected data. Return It is used to return to previous setting/screen. CONFIRM/UNLOCK If screen and buttons are unlocked, press it to upload setting parameters after setting any parameter. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 32 2) In the state of child lock, long press the key combination again for 2 Child lock Press for seconds to release the child lock state; function 2 sec 3) In the locked state, there will be an icon next to the water temperature display. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 33 (heats up tank channel 39 Figure 23 water to 150°F (65°C)) 0：off (No Duct installed) (default) 1：on (Duct Engineering Duct Setting installed) (Must channel 40 set to ON when duct is 3 Seconds installed) Rinnai Electric Heat Pump Water Heater Manual...
  • Page 34 T&P valve, located on the side of the water heater, at least once a year to confirm its proper functioning. Allow several gallons to flow through the discharge line into an open drain Rinnai Electric Heat Pump Water Heater Manual...

  • Page 35: Anode Rod

    It is recommended to replace anode rod every 5 years (IMPORTANT: life of the anode rod depends on the water usage and quality. It may need to be replaced earlier than recommended time). Rinnai Electric Heat Pump Water Heater Manual...
  • Page 36 Incorrect power supply (exceeding the A: to avoid unit ON/OFF frequently, unit will range of 208~240V). activate heat source only when bottom tank temperature is lower than setting temperature for at least 7°F (4°C). Rinnai Electric Heat Pump Water Heater Manual...
  • Page 37 “ ” or “ ”. Finally press “ ” confirm the set temperature. Plug in; plug and Cold water socket; Setting water extinguished Contact Temp. service sensor center. damaged; Rinnai Electric Heat Pump Water Heater Manual...

  • Page 38: Performance Data

    No of Electric heaters (0: one e-heater or 2: two e-heaters) Last error code Diagnostic code last error code Diagnostic code last error code Diagnostic code Maintenance time days Set (target) Temperature °F/°C End of the performance list Rinnai Electric Heat Pump Water Heater Manual...

  • Page 39: Diagnostic Codes

    ONLY connector on the main PCB. EH5H temperature sensor (TH) heat 3. Inspect wire for damage. failure. pump 4. If the error persists, contact a qualified stops person to replace temperature sensor. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 40 2. If error persists, call our Technical Freeze protection (When T5L< valve PH24 Assistance Hotline which is listed on the 39°F(4°C) and T4 < 45°F(7ºC) closes water heater’s warranty sheet for further assistance. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 41 Check if the shut-off valve connector is connected. Shut-off Ensure that the shut-off valve motor FC06 Valve Shut-off valve malfunction assembly is properly secured to valve closes If it does not work properly, contact a qualified person. Rinnai Electric Heat Pump Water Heater Manual...

  • Page 42: Cta Module Wiring

    Cover (CTA 2045) CTA Adaptor (Not supplied) Conduit Connector NOTICE A CTA2045 compliant Module can be connected to the water heater’s connection port. Follow the instructions from the CTA2045 Module supplier for initial startup. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 43 Domestic hot water Nominal 3/4” size mixing or Supply to house tempering valve (refer to warning above). Follow mixing or tempering valve manufacturer's instructions for installation of the valve Hot Water Outlet Cold Water Outlet Rinnai Electric Heat Pump Water Heater Manual...
  • Page 44 FLAMMABLE CONTENTS UNDER PRESSURE. The compressor is not a serviceable part. The compressor wiring terminals may are allowing pressurized refrigerant and oil to escape, ignite and cause serious bodily injury, severe burns or death. Figure 29 Rinnai Electric Heat Pump Water Heater Manual...
  • Page 45 30.6 Element Heater 105002064 30.7 T&P Valve 107000677 30.8 Water Temperature Sensor 105002069 30.9 Drain Valve 107000678 30.11 Anode Rod 107000679 107000680 30.12 Water Outlet J-Tube 107000675 30.13 Water Inlet Pipe Assembly 107000676 Rinnai Electric Heat Pump Water Heater Manual...
  • Page 46 3. Remove one screw holding insulating cover to gain access to TCO/ water temperature sensor/heating element. necessary. 5. Remount the insulation cover, TCO cover, and turn on the electrical power at breaker. Rinnai Electric Heat Pump Water Heater Manual...
  • Page 47 Figure 31 Rinnai Electric Heat Pump Water Heater Manual...

  • Page 48: Warranty

    Rinnai’s sole discretion. The warranty claim for product parts and labor may be denied if a component or product returned to Rinnai is found to be free of defects in material or workmanship; damaged by improper installation, use or operation;...
  • Page 49 Limited Warranty. If you purchase a Rinnai product from an unauthorized dealer, or if the original factory serial number has been removed, defaced or altered, your Rinnai warranty will not be valid.

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