Operation Instructions - Rinnai RUCS65i series Installation And Operation Manual

Direct Vent Tankless Water Heater
FOR INDOOR APPLICATIONS ONLY
RUCS65i ................ REU-KCM2025FFU-US
RUCS75i ................ REU-KCM2528FFU-US
FOR OUTDOOR APPLICATIONS ONLY
RUS65e ................. REU-KCM2025W-US
RUS75e ................. REU-KCM2528W-US
Important Facts about your Water Heater
Thank you for purchasing a Rinnai Tankless Water Heater. For proper operation and safety, it is
important to follow the instructions and adhere to all safety precautions.
Read all of the instructions and the warranty thoroughly before operating this water heater. Keep this
manual in a safe place.
NOTICE: Rinnai sometimes shares customer contact information with businesses that we believe provide
products or services that may be useful to you. By providing this information, you agree that we can
share your contact information for this purpose. If you prefer not to have your information shared with
these businesses, please contact customer service and ask not to have your information shared. We
will however, continue to contact you with information 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
 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
instructions.
 If you cannot reach your gas supplier, call the fire department.
— Installation and service must be performed by a licensed professional.

Operation Instructions

If the information in these instructions is not followed exactly, a fire or
explosion may result causing property damage, personal injury, or death.
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