Direct Vent Tankless Water Heater
FOR INDOOR APPLICATIONS ONLY
RU80i . ................... REU‐KB2530FFUD‐US
RU98i . ................... REU‐KB3237FFUD‐US
FOR OUTDOOR APPLICATIONS ONLY
RU80e . .................. REU‐KB2530WD‐US
RU98e . .................. REU‐KB3237WD‐US
Important Facts about your Water Heater
Thank you for purchasing a Rinnai Tankless Water Heater. For proper opera on and safety, it is
important to follow the instruc ons and adhere to all safety precau ons.
Read all of the instruc ons and the warranty thoroughly before opera ng this water heater. Keep this
manual in a safe place.
NOTICE: Rinnai some mes shares customer contact informa on with businesses that we believe provide
products or services that may be useful to you. By providing this informa on, you agree that we can
share your contact informa on for this purpose. If you prefer not to have your informa on shared with
these businesses, please contact customer service and ask not to have your informa on shared. We
will however, con nue to contact you with informa on relevant to the product(s) you registered and/or
you account with us.
WARNING
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Leave the premises.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instruc ons.
• If you cannot reach your gas supplier, call the fire department.
— Installa on and service must be performed by a licensed professional.
Opera on Instruc ons
If the informa on in these instruc ons is not followed exactly, a fire or
explosion may result causing property damage, personal injury or death.
KB Series Manual
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