FOR INDOOR APPLICATIONS ONLY
V75i ....................... REU-VC2528FFU-US
V65i ....................... REU-VC2025FFU-US
FOR OUTDOOR APPLICATIONS ONLY
V75e ...................... REU-VC2528W-US
V65e ...................... REU-VC2025W-US
READ ALL OF THE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR OPERATING THIS WATER HEATER.
This manual provides information on the installation, operation, and maintenance of the water heater. For proper
operation and safety, it is important to follow the instructions and adhere to the safety precautions.
A licensed professional must install the water heater according to the exact instructions on pages 4-27.
The consumer must read the entire manual to properly operate the water heater and to have regular maintenance
performed.
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 to maintain the water heater.
ANS Z21.10.3 ● CSA 4.3
If the information in these instructions is not followed exactly, a fire or explosion
may result causing property damage, personal injury or death.
Direct Vent Tankless Water Heater
Installation and Operation Manual
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Do you have a question about the V75i series and is the answer not in the manual?
Questions and answers
Our hot water is taking a long time to heat up. I checked codes and #1 is showing 11 code ? what should I do? thanks
Code 11 on the Rinnai V75i series indicates "No Ignition." To resolve this:
- Check that the gas is turned on at the water heater, gas meter, or cylinder.
- For propane systems, ensure there is gas in the tank.
- Bleed air from gas lines.
- Ensure proper gas type and pressure.
- Verify the system is properly grounded.
- Check fan for blockage.
- Confirm igniter is working and wiring is not damaged.
- Inspect gas solenoid valves for open or short circuits.
- Verify burner and burner plate are clean and seated correctly.
- Check dip switch settings and ground wire for the PC board.
For slow hot water heating, possible causes include scale buildup in the heat exchanger. If LC0–LC9 codes appear:
- Flush the heat exchanger following instructions in the manual.
- Temporarily operate the heater by pressing the On/Off button five times.
- Treat hard water to prevent future scale buildup.
This answer is automatically generated
I have a Rinnai V65i. Is it normal for the green priority light to be on? Thank you for your help.
Yes, it is normal for the green priority light to be on for a Rinnai V75i series. The unit includes a "Domestic Hot Water Priority" feature, which means the system gives priority to domestic hot water demand. The green light indicates this function is active.
This answer is automatically generated