1. Introduction and Overview
This manual provides essential information for the safe and efficient operation of your Rinnai REU E17 FEHB 17 Liters Natural Gas Bivolt Water Heater. This appliance is designed to provide instantaneous hot water for indoor use. Please read these instructions thoroughly before installation, operation, or maintenance.
Key features of your Rinnai REU E17 FEHB water heater include:
- Forced exhaust system for safe operation.
- Temperature adjustment ranges: Standard (32°C to 50°C) and Top (35°C to 60°C).
- Automatic ignition for convenience.
- Safety timer for enhanced user protection.
- Compatibility with an optional Wi-Fi accessory for remote control.
Figure 1: Front view of the Rinnai REU E17 FEHB gas water heater.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
- Professional Installation Required: This appliance must be installed by a qualified and licensed professional in accordance with all local codes and regulations.
- Carbon Monoxide Hazard: This water heater produces carbon monoxide, which is a poisonous gas. Improper installation or venting can cause carbon monoxide poisoning, leading to serious injury or death. Ensure proper ventilation and never operate the unit without a correctly installed exhaust system.
- Gas Leaks: If you smell gas, immediately shut off the gas supply to the appliance, open windows and doors, and contact a qualified service technician. Do not operate any electrical switches or phones.
- Electrical Safety: Ensure the unit is properly grounded and connected to a suitable electrical supply as specified in the specifications. Do not use extension cords.
- Water Temperature: Hot water can cause severe burns. Exercise caution when setting and using hot water.
3. Setup and Installation
The Rinnai REU E17 FEHB water heater is designed for indoor installation only and requires a forced exhaust system. Installation must be performed by a qualified and licensed professional.
- Location: Choose a location that allows for proper ventilation, access for maintenance, and is protected from freezing temperatures.
- Gas Supply: Ensure the gas supply type (Natural Gas - GN) and pressure match the appliance requirements.
- Water Connections: Connect the cold water inlet and hot water outlet pipes according to the markings on the unit.
- Electrical Connection: Connect the unit to a Bivolt (127V/220V) wired electrical supply.
- Ventilation: Install the forced exhaust system as per local codes and manufacturer instructions to safely vent combustion byproducts outdoors.
Figure 2: Internal view of the Rinnai REU E17 FEHB, showing heat exchangers and wiring. Professional installation is crucial for these components.
Figure 3: Detail of the coil-less heat exchanger, a core component for efficient water heating.
4. Operating Instructions
Your Rinnai REU E17 FEHB water heater features automatic ignition and a user-friendly control panel.
- Power On/Off: Press the power button on the control panel to turn the unit on or off.
- Automatic Ignition: When the unit is on and a hot water tap is opened, the water heater will automatically ignite to provide hot water.
- Temperature Adjustment: Use the up and down arrow buttons on the control panel to adjust the desired water temperature. The display will show the set temperature. The available temperature ranges are Standard (32°C to 50°C) and Top (35°C to 60°C).
- Wi-Fi Compatibility: If equipped with the optional Wi-Fi accessory, refer to the accessory's manual for instructions on remote operation and monitoring.
Figure 4: The digital control panel for adjusting temperature and powering the unit.
5. Maintenance
Regular maintenance ensures the longevity and efficient operation of your Rinnai water heater. It is recommended that a qualified service technician inspects the unit annually.
- Annual Inspection: Have a qualified technician inspect the heat exchanger, burners, gas connections, water connections, and exhaust system for any signs of wear, corrosion, or leaks.
- Cleaning: Keep the exterior of the unit clean. Do not use abrasive cleaners.
- Safety Timer: The integrated safety timer is designed to prevent prolonged operation under certain conditions. If the unit shuts off unexpectedly, consult the troubleshooting section.
- Filter Cleaning: Check and clean any inline water filters as recommended by your installer to prevent sediment buildup.
6. Troubleshooting
If you experience issues with your water heater, refer to the following common troubleshooting steps. For complex problems, contact a qualified service technician.
- No Hot Water:
- Check if the unit is powered on.
- Ensure the gas supply valve is open.
- Verify that water pressure is adequate.
- Check for any error codes displayed on the control panel and consult the technician.
- Inconsistent Water Temperature:
- Confirm the set temperature on the control panel.
- Ensure there is sufficient water flow through the unit.
- Unit Not Igniting:
- Check electrical power supply.
- Ensure gas supply is open.
- Listen for the ignition click. If no click, contact service.
7. Specifications
| Feature | Specification |
|---|---|
| Model | REU E17 FEHB |
| Brand | Rinnai |
| Type | Instantaneous Gas Water Heater |
| Gas Type | Natural Gas (GN) |
| Flow Rate | 17 Liters/minute |
| Power Source | Wired Electric (Bivolt) |
| Special Features | Safety Timer, Automatic Ignition, Forced Exhaust |
| Temperature Range (Standard) | 32°C to 50°C |
| Temperature Range (Top) | 35°C to 60°C |
| Weight | 15 Kilograms |
| Form Factor | Box |
| Environment | Indoor Area |
Figure 5: Energy efficiency label indicating the appliance's performance and gas consumption.
8. Warranty and Support
Your Rinnai REU E17 FEHB water heater comes with a 3-year warranty from the date of purchase. This warranty covers manufacturing defects under normal use and service.
- Warranty Claims: For warranty service, please retain your proof of purchase and contact Rinnai customer support or an authorized service center.
- Exclusions: The warranty does not cover damage resulting from improper installation, misuse, neglect, unauthorized repairs, or acts of nature.
- Technical Support: For technical assistance, troubleshooting guidance, or to locate an authorized service provider, please visit the official Rinnai website or contact their customer service department.
