Introduction
This manual provides essential information for the safe and efficient operation of your Rheem RTG-70DVLN-1 Mid-Efficiency Indoor Natural Gas Tankless Water Heater. This unit is designed to provide continuous hot water on demand. It features industry-leading low flow activation, an Ultra Low NOx burner, Guardian Overheat Film Wrap, maintenance notifications, and a self-diagnostic system. For optimal performance and safety, please read all instructions carefully before installation and use.
Front view of the Rheem RTG-70DVLN-1 Mid-Efficiency Indoor Natural Gas Tankless Water Heater.
Setup and Installation
Professional installation is required for this unit to ensure proper function and to maintain warranty validity. Incorrect installation can lead to hazardous conditions and void the product warranty.
Key Considerations for Installation:
- Location: This is an indoor unit. Ensure adequate clearance as specified in the full installation guide.
- Venting: Specific venting is required. The unit typically uses 3-inch by 5-inch double-walled concentric stainless steel venting. Consult the full manual for detailed venting requirements and approved materials.
- Gas Line: A 3/4-inch natural gas line is recommended for best performance.
- Electrical: The unit requires 200 watts and 120 Volts for electronic ignition. Ensure your residence's electrical service meets these requirements.
- Water Connections: Inlet and outlet piping may require alterations to connect the tankless gas water heater.
Example installation of the tankless water heater in a garage setting.
Rheem RTG Series High Efficiency Indoor Tankless Gas Water Heater.
Pre-Installation Checklists:
Tankless Gas Water Heater Purchase Checklist: Review inlet and exhaust connection sizes, required materials, maximum vent run length, unit's ability to deliver required water temperature for your region, and required installed unit clearance.
Replacing a Gas Tank with Tankless Gas Checklist: Consider venting (may differ from old tank), main gas line (3/4" recommended), electricity (tankless units require power), and piping (alterations may be needed).
Operating Instructions
The Rheem RTG-70DVLN-1 operates on demand, heating water only when a hot water tap is opened. This ensures an endless supply of hot water and reduces energy waste when hot water is not needed.
- Activation: The unit features a low flow activation with a minimum flow rate of 0.26 GPM and a minimum activation flow rate of 0.40 GPM, ensuring hot water even for low demand situations.
- Temperature Control: The water temperature can be set from 80°F minimum to 140°F maximum. The unit is preset at 120°F from the factory. A digital remote control and 10ft of thermostat wire are included for temperature adjustment.
- EcoNet Compatibility: The unit is EcoNet enabled, allowing for smart monitoring and control via a mobile app with an additional kit. EcoNet provides enhanced protection, comfort, and energy savings.
This map and table illustrate approximate usage (number of faucets/showers) based on regional inlet water temperatures and BTU/h for different models. The RTG-70 model has 160,000 BTU/h.
Rheem tankless indoor models are powerful, energy efficient, and provide continuous hot water.
Maintenance
Regular maintenance ensures the longevity and efficient operation of your tankless water heater.
- Self-Diagnostic System: The unit includes a self-diagnostic system to help identify potential issues.
- Maintenance Notifications: The system provides maintenance notifications to alert you when service is recommended.
- Overheat Protection: The exclusive Guardian Overheat Film Wrap prevents the unit from reaching dangerous temperatures.
- Construction: Constructed from copper and stainless steel for rugged durability, minimizing the need for frequent repairs.
Consult the full product manual for detailed maintenance schedules and procedures, including flushing and cleaning recommendations.
Internal view of the Rheem tankless water heater, illustrating its components.
Troubleshooting
If you encounter issues with your Rheem tankless water heater, the self-diagnostic system can provide error codes. Refer to the comprehensive troubleshooting section in your complete owner's manual for specific solutions corresponding to these codes.
- Common Issues: If the unit is not producing hot water or is shutting off unexpectedly, check the gas supply, electrical connection, and ensure proper water flow.
- Error Codes: The digital remote control will display error codes. Consult your full manual for a list of codes and their meanings.
- Professional Service: For complex issues or if you are unsure about a repair, it is highly recommended to contact a qualified professional technician.
Specifications
| Feature | Specification |
|---|---|
| Model Number | RTG-70DVLN-1 |
| Brand | Rheem |
| Capacity | 7 Gallons Per Minute (Flow Rate) |
| Power Source | Natural Gas |
| Product Dimensions (W x H) | 13.88"W x 25.63"H |
| Special Feature | Overheat Protection |
| Wattage | 200 watts |
| Voltage | 120 Volts |
| Minimum Temperature | 80°F |
| Maximum Temperature | 140°F (Preset at 120°F) |
| Efficiency | Mid Efficiency (.81-.82 UEF) |
| Maximum Pressure | 150 PSI |
| Mount Type | Wall |
| Color | Gray |
| Material Type | Stainless Steel |
| Item Weight | 54 Pounds |
| UPC | 020352691305 |
Dimensions of the Rheem RTG-70DVLN-1 tankless water heater.
Bottom view of the unit, illustrating the water and gas connections.
Top view of the unit, showing the exhaust vent connection.
Warranty
The warranty for your Rheem RTG-70DVLN-1 tankless water heater is contingent upon professional installation. Failure to have the unit installed by a qualified professional will void the warranty. Please retain your proof of professional installation for warranty claims.
Support
For further assistance, technical support, or to inquire about service, please contact Rheem customer service. You can find contact information on the official Rheem website or within the full product documentation included with your unit.
When contacting support, please have your model number (RTG-70DVLN-1) and serial number ready.