Common Vent Installation Manual
For the RU98i (REU-KB3237FFUD-US), RUC98i (REU-KBD3237FFUD-US), and
C199i (REU-KBD3237FFUDC-US) Condensing Water Heaters
This manual is a supplement to the appliance manual.
Additional information can be obtained from the Rinnai Water Heater Installation and
Operation Manual.
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.
This entire manual must be left for the consumer. The consumer must read and
refer to this manual for proper operation and maintenance of the common vent system.
C
US
If the information in these instructions is not followed exactly, a fire or explosion
may result causing property damage, personal injury or death.
Certified to ANSI Z21.10.3 - CSA 4.3
For U.S. and Canadian Installations
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Rinnai CVent