1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Rinnai RXP199iN Condensing Tankless Water Heater. This model is designed for both indoor and outdoor installations and is compatible with either natural gas or propane, thanks to its Smart Sense gas control system and Versa Vent technology. It features a high Uniform Energy Factor (UEF) of 0.98 and includes Smart-Circ Intelligent Recirculation for enhanced hot water delivery and energy savings.
Please read this manual thoroughly before installation or operation and retain it for future reference. Proper installation and maintenance are crucial for optimal performance and safety.
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: Installation and service must be performed by a qualified installer, service agency, or gas supplier. It is strongly recommended to visit the Find a Rinnai PRO page on the Rinnai website to locate a qualified technician.
- Gas Type: Ensure the unit is configured for the correct gas type (Natural Gas or Propane) before connection. The Smart Sense system allows conversion, but initial setup must be correct.
- Ventilation: Proper venting is critical for safety. Ensure all venting components are correctly installed according to local codes and manufacturer instructions.
- Water Connections: All water connections must be secure to prevent leaks.
- Electrical Connections: The unit requires a 120V electrical supply. All electrical work must comply with local codes.
- Hazardous Materials: Transportation and handling of this item are subject to hazardous materials regulations.
3. Product Features and Components
The Rinnai RXP199iN tankless water heater integrates advanced technology for reliable and efficient hot water supply.
Key Features:
- Smart Sense Gas Control System: Allows the unit to operate with either natural gas or propane.
- Versa Vent: Enables flexible indoor or outdoor installation with appropriate venting.
- Smart-Circ Intelligent Recirculation: An internal pump with intelligent technology that learns water usage patterns to provide hot water more quickly and efficiently.
- High Efficiency: UEF of 0.98, making it an Energy Star qualified appliance.
- Compact Design: Space-saving footprint, comparable to a small suitcase.
- Easy-to-Use Interface: Digital display for temperature control and status monitoring.
- Quick Flush Function: Simplifies routine maintenance.
- Wi-Fi Connectivity (Optional): Compatible with the Control-R module (sold separately) for remote monitoring and control.
4. Installation
The Rinnai RXP199iN offers versatile installation options, suitable for both indoor and outdoor environments. Professional installation is highly recommended to ensure safety and compliance with all local codes.
4.1 Site Selection
- Indoor Installation: Mount the unit on a sturdy wall in a location with adequate ventilation and drainage. Ensure proper clearance for maintenance.
- Outdoor Installation: The unit can be installed outdoors with the RX-OVC vent cap (sold separately). Ensure it is protected from direct weather exposure and potential damage.
4.2 Connections
Refer to the detailed diagrams below for connection points. All connections should be made by a qualified professional.
- Gas Line: Connect the gas supply to the designated inlet. Ensure the gas type matches the unit's configuration.
- Water Lines: Connect the cold water supply to the inlet and the hot water outlet to your home's hot water distribution system.
- Condensate Drain: A condensate drain line must be installed, ideally with a condensate neutralizer, as this is a condensing unit.
- Venting: Install appropriate venting for indoor or outdoor use. For outdoor installations, the RX-OVC vent cap is required.
- Electrical: Connect to a dedicated 120V electrical circuit.
5. Operating Instructions
Once properly installed, operating your Rinnai RXP199iN is straightforward. The unit features an intuitive digital interface.
5.1 Initial Startup
- Ensure all gas, water, and electrical connections are secure and leak-free.
- Open the gas supply valve.
- Open the cold water supply valve to the unit.
- Plug in the unit or turn on the electrical breaker. The display should illuminate.
- Purge air from the hot water lines by opening a hot water faucet in your home until water flows steadily.
5.2 Temperature Adjustment
Use the up and down arrows on the unit's digital display to adjust the desired hot water temperature. The maximum temperature setting is 140°F (60°C).
5.3 Smart-Circ Intelligent Recirculation
The Smart-Circ feature automatically learns your household's hot water usage patterns. It will activate the internal recirculation pump to pre-heat water, reducing wait times for hot water at fixtures. This feature operates automatically once enabled. For immediate hot water on demand, consider using an optional remote Bluetooth recirculation push button (RPB200).
5.4 Wi-Fi Connectivity (Optional)
For advanced control and monitoring, the Rinnai RXP199iN can be connected to Wi-Fi via the Control-R module (sold separately). This allows for remote temperature adjustment, system status checks, and troubleshooting assistance through the Rinnai Central App.
For more details on performance based on ground water temperature, refer to the Rinnai SENSEI RX Series Ground Water Temperature Map:
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your Rinnai RXP199iN tankless water heater. It is recommended to have annual professional maintenance.
6.1 Quick Flush Function
The Quick Flush function simplifies the process of flushing the heat exchanger to remove mineral buildup. Consult your professional installer or the Rinnai Central App for detailed instructions on performing this procedure.
6.2 General Maintenance Tips
- Periodically inspect the unit for any visible leaks or damage.
- Ensure the area around the water heater is clear of obstructions and combustible materials.
- Check the condensate drain line for blockages.
- For optimal performance and to prevent scale buildup, especially in hard water areas, regular flushing of the heat exchanger is essential.
7. Troubleshooting
If you encounter issues with your Rinnai RXP199iN, refer to the following general troubleshooting steps. For complex problems or error codes, contact a qualified Rinnai service professional.
- No Hot Water:
- Check if the gas supply is open.
- Verify the electrical power supply to the unit.
- Ensure the water inlet valve is fully open.
- Check the unit's display for any error codes.
- Inconsistent Water Temperature:
- Confirm the set temperature on the unit's display.
- Ensure adequate water flow to the unit. Very low flow rates can sometimes cause issues.
- Consider if multiple hot water fixtures are in use simultaneously, potentially exceeding the unit's capacity.
- Unit Not Turning On:
- Check the power connection and circuit breaker.
- Verify gas supply.
- A simple reset by unplugging the unit for one minute and plugging it back in can sometimes resolve minor electronic glitches.
For all complex issues or persistent problems, contact a Rinnai certified technician. Do not attempt repairs beyond basic troubleshooting if you are not qualified.
8. Specifications
Detailed technical specifications for the Rinnai RXP199iN Condensing Tankless Water Heater.
| Specification | Value |
|---|---|
| Model Number | RXP199iN |
| Brand | Rinnai |
| Product Dimensions | 19"W x 31"H |
| Item Weight | 58 pounds |
| Gas Type Compatibility | Natural Gas or Propane (Smart Sense gas control system) |
| Maximum Flow Rate | 11.1 Gallons Per Minute (GPM) |
| Heat Output | 199,000 British Thermal Units (BTU) |
| Uniform Energy Factor (UEF) | 0.98 |
| Electrical Requirements | 120 Volts, 98 Watts |
| Maximum Temperature | 140 Degrees Fahrenheit |
| Maximum Operating Pressure | 150 Pound per Square Inch (PSI) |
| Mounting Type | Wall |
| Special Features | Smart Sense gas control system, Versa Vent, Smart-Circ Intelligent Recirculation, WiFi connectivity (Control-R module sold separately) |
| UPC | 766156017308 |
For a cross-reference of Rinnai SENSEI and SENSEI RX series models and accessories, refer to the following:
9. Warranty and Support
Rinnai products are built to high standards. For warranty information, it is crucial to register your product upon installation. Warranty terms typically vary based on components and registration status.
- Product Registration: Register your Rinnai RXP199iN water heater immediately after professional installation to ensure full warranty coverage.
- Professional Assistance: For any service, maintenance, or troubleshooting beyond basic steps, always contact a Rinnai certified professional.
- Rinnai Central App: Utilize the Rinnai Central App for assistance with setup, service scheduling, and troubleshooting.
- Customer Support: For direct support, visit the Rinnai website or contact their customer service.
