1. Introdución
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Rinnai RE160iN Non-Condensing Natural Gas Tankless Water Heater. Please read this manual thoroughly before installation or use and retain it for future reference. This unit is designed for indoor installation and provides up to 6.6 Gallons Per Minute (GPM) of hot water.

Figura 1: Fronte view of the Rinnai RE160iN Tankless Water Heater.
2. Información de seguridade
ADVERTENCIA: A instalación, axuste, alteración, servizo ou mantemento inadecuados poden causar danos materiais, lesións ou a morte. Lea atentamente as instrucións de instalación, funcionamento e mantemento antes de instalar ou reparar este equipo.
- Always ensure proper ventilation as specified in the installation guide.
- Non almacene nin use gasolina ou outros vapores e líquidos inflamables nas proximidades deste ou de calquera outro aparello.
- Professional installation by a qualified technician is highly recommended to ensure safety and compliance with local codes.
- Manteña os nenos lonxe do quentador de auga e dos seus controis.
3. Produto rematadoview
The Rinnai RE160iN tankless water heater offers advanced technology for efficient hot water delivery. Its compact design saves space, and the integrated LED display provides operational status and error codes.
Características principais:
- Deseño intelixente: Presenta unha disposición interna máis limpa e un novo soporte deslizante para facilitar a aliñación durante a instalación.
- Pantalla LED: Provides service reminders and error codes for enhanced serviceability.
- Tamaño compacto: Designed to be highly compact, similar to a small suitcase, allowing for flexible installation locations.
- Alta eficiencia: Heats water only when needed, reducing energy waste.
- Auga quente continua: Provides an endless supply of hot water on demand.
- Compatibilidade con Smart Home: Can be made smarter with an optional Rinnai Controlr for WiFi connectivity (not included).

Figure 2: Rinnai RE160iN with its LED display for status and control.
4. Especificacións
| Característica | Especificación |
|---|---|
| Marca | Rinnai |
| Número de modelo | REU-VE2125FFD-US-N |
| Dimensións do produto | 14.05" de ancho x 27.28" de alto x 10.77" de fondo |
| Peso do elemento | 48.5 libras |
| Fonte de enerxía | Gas Natural |
| Voltage | 120 voltios |
| Caudal máximo | 6.6 galóns por minuto |
| Temperatura máxima | 140 graos Fahrenheit |
| Eficiencia | 0.81 |
| Tipo de montaxe | Muro |
| Cor | Prata |
| O que hai na caixa | Quentador de auga sen tanque |
5. Instalación
The Rinnai RE160iN is designed for indoor installation. Due to the complexity of gas and water connections, professional installation by a qualified technician is strongly recommended. Incorrect installation can lead to serious injury, property damage, or void the product warranty.
Directrices xerais:
- Ensure the installation location complies with all local and national codes for gas appliances.
- Verify adequate ventilation and proper venting for exhaust gases.
- The unit requires a 3/4" natural gas line.
- Proper water and gas shut-off valves should be installed for maintenance.
- Mount the unit securely to a wall using appropriate hardware.

Figura 3: Example of a Rinnai tankless water heater with connected plumbing and gas lines.
6. Funcionamento
Your Rinnai RE160iN water heater is designed for simple operation. Once installed and connected, it will provide hot water on demand.
Acendido/apagado da unidade:
The unit typically operates automatically. Refer to the LED display for current status. Use the On/Off button on the control panel if manual intervention is required.
Axuste da temperatura da auga:
The desired water temperature can be adjusted using the up and down arrows on the control panel. The current approximate water temperature will be displayed on the LED screen. For safety, especially in homes with children, it is recommended to set the temperature to 120°F (49°C) or lower to prevent scalding.
Understanding the LED Display:
The LED display shows the approximate water temperature and can indicate various operational statuses or error codes. Consult the full installation manual for a complete list of error codes and their meanings.
7. Mantemento
Regular maintenance ensures the longevity and optimal performance of your Rinnai tankless water heater. It is recommended to have the unit serviced annually by a qualified professional.
Annual Descaling:
To prevent mineral buildup (scale) which can reduce efficiency and damage the unit, annual descaling is crucial. This process involves circulating a descaling solution through the heat exchanger. Your professional installer can perform this service.
Coidado xeral:
- Keep the area around the water heater clear of obstructions and flammable materials.
- Periodically inspect the venting system for any blockages or damage.
- Ensure the air intake is not blocked.
8 Solución de problemas
If your Rinnai tankless water heater is not functioning correctly, the LED display may show an error code. Refer to the comprehensive troubleshooting section in the full installation manual for specific error code interpretations and solutions. Below are some common issues and general advice:
- Sen auga quente: Check if the unit is powered on, gas supply is open, and water supply is active. Look for error codes on the display.
- Temperatura da auga inconsistente: This could indicate scale buildup or issues with water flow. Descaling may be required.
- Caudal de auga baixo: Comprobe se hai filtros obstruídos ou restricións nas liñas de auga.
- Ruídos pouco comúns: Contact a qualified technician if you hear unusual sounds like banging or grinding.
For complex issues or if an error code persists, contact a Rinnai-certified technician.
9. Garantía e soporte
Rinnai stands behind the quality of its products. The RE160iN Tankless Water Heater comes with the following residential guarantees:
- Intercambiador de calor: Garantía limitada de 15 anos.
- Laboral: Garantía limitada de 5 anos.
- Partes: Garantía limitada de 1 anos.
Please register your product to activate your warranty. For detailed warranty terms and conditions, or to find a Rinnai PRO technician in your area, visit the official Rinnai website or contact Rinnai customer support.
10. Galería multimedia
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