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Rinnai HD28E - User Manual

Rinnai HD28E
24 pages
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Commercial Manifold Pack
Operation & Installation Manual

Questions and Answers

  • S
    sarah76Aug 11, 2025
    What to do if there is flame failure or low gas flow in my Rinnai HD28E?
    • D
      diane03Aug 11, 2025
      To address flame failure or low gas flow in your Rinnai Water Heater, verify that the gas supply is turned on at both the water heater and the gas meter or cylinder. Also, ensure there are no obstructions blocking the flue outlet.
  • J
    Julie WarnerAug 17, 2025
    How to fix no ignition or no gas supply in Rinnai Water Heater?
    • V
      Valerie ParksAug 17, 2025
      If your Rinnai Water Heater fails to ignite or seems to have no gas supply, first, check that the gas is turned on at the water heater itself. Then, check the gas meter or cylinder to ensure the gas supply is active there as well.
  • B
    Brenda DoughertyAug 23, 2025
    What to do if water will not flow after a power interruption during bath fill with my Rinnai Water Heater?
    • D
      Dustin SpencerAug 23, 2025
      If you experience a power interruption while filling a bath and the water does not flow when the power is restored, turn off all hot water taps. Then, press the On/Off button twice on your Rinnai Water Heater.
  • M
    Mitchell JonesAug 28, 2025
    Why is there a noticeable reduction in water flow in my Rinnai Water Heater?
    • A
      Angela VaughanAug 28, 2025
      If you notice a reduction in water flow in your Rinnai Water Heater, the inlet water filter may need cleaning. A service call is required to resolve this issue.
  • P
    Paul ShawSep 4, 2025
    What to do if the wireless water controller for my Rinnai HD28E Water Heater is out of range?
    • E
      Erica CainSep 4, 2025
      If your wireless water controller (when fitted) for the Rinnai Water Heater is out of range, it may be due to the distance from the transceiver or an obstruction. Try moving the wireless water controller or transceiver closer, or remove any obstructions that might be interfering with the signal.

Rinnai HD28E Specifications

General IconGeneral
CategoryTankless
Fuel TypeNatural Gas
Maximum BTU Input199, 000 BTU/hr
Minimum BTU Input15, 000 BTU/hr
Temperature Range98°F - 140°F (98°F - 160°F with MCC-91 controller)
Electrical Requirements120 VAC
Warranty12 years heat exchanger, 5 years parts, 1 year labor

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