Installation and operation guide for Rinnai tankless water heaters (RUR199e, RUR160e, RUR199i, RUR160i) with safety, wiring, and maintenance instructions.
This manual provides comprehensive safety instructions, installation guidelines, and operating procedures for Rinnai tankless water heaters. It covers both indoor (RUR199i, RUR160i) and outdoor (RUR199e, RUR160e) models, detailing required tools, venting, gas and water connections, and parameter settings.
The document also includes maintenance tasks such as cleaning the air filter, flushing the heat exchanger, and troubleshooting diagnostic codes. Appendices contain wiring diagrams, pressure‑drop curves, and warranty information, helping qualified installers and end users keep the system running safely and efficiently.
| Minimum activation flow | 0.4 GPM (1.5 L/min) |
|---|---|
| Minimum gas consumption | 15,000 Btu/h |
| Maximum gas consumption | 199,000 Btu/h |
| Flow rate (min‑max) | 0.26‑9.8 GPM (1.0‑37 L/min) |
| Maximum temperature setting (default) | 120 °F (49 °C) |
| Maximum temperature setting (adjusted) | 140 °F (60 °C) |
| Weight | 73 lb (33 kg) |
| Sound level | 49 dB |
| Normal electrical power | 84 W |
| Minimum water pressure | 50 psi (recommended 60‑80 psi) |
| Energy Star qualified | Yes |
A trained and qualified professional must install, inspect, and leak‑test the water heater before use.
The minimum water pressure is 50 psi, with a recommended range of 60‑80 psi for maximum performance.
The heat exchanger is covered for 15 years or 12,000 hours of operation, whichever occurs first.
This manual explains 8 error codes. Open a code for its meaning, causes and what to do: