Product Overview
The Rheem RTG-84DVLN is an 8.4 GPM Low NOx Direct Vent Tankless Natural Gas Water Heater designed for indoor installation. This unit provides a continuous supply of hot water, eliminating the need for a storage tank. Its design focuses on energy efficiency and space-saving.
Key Features:
- Continuous hot water supply.
- Energy-efficient operation, automatically adjusting energy consumption.
- Adjustable water temperature range from 85°F to 140°F.
- Low NOx emissions.
- All-copper heat exchanger for durability.
- Hot-start programming.
- Universal venting compatibility.
Image: Front view of the Rheem RTG-84DVLN Tankless Natural Gas Water Heater.
Setup and Installation
Installation of the Rheem RTG-84DVLN requires adherence to local codes and regulations. Due to the complexity involving gas, water, and venting systems, professional installation by a qualified plumber or HVAC technician is strongly recommended.
Pre-Installation Checklist:
- Venting: This unit requires a 3"/5" concentric vent system with an integrated condensate collector. Exhaust venting requirements may differ from traditional tank water heaters. Condensing tankless units typically use PVC, while non-condensing units use stainless steel exhaust venting.
- Main Gas Line: A 3/4-inch natural gas line is recommended for optimal performance.
- Electricity: An electrical power source (120V AC, 20 Amp dedicated breaker) is required for the tankless water heater to function.
- Piping: Inlet and outlet piping may require alterations to connect to the tankless gas water heater.
- Accessories: Essential accessories such as the vent and valve system are typically purchased separately.
Image: Checklist for purchasing a tankless gas water heater, detailing considerations for inlet/exhaust connections, vent run length, temperature delivery, and clearance.
Image: Checklist for replacing a gas tank with a tankless gas water heater, covering venting, main gas line, electricity, and piping considerations.
Placement:
The unit is designed for indoor installation only. Ensure adequate clearance around the unit as specified in the full installation manual.
Image: A Rheem tankless water heater installed on a wall in a utility area, showing connections.
Operating Instructions
Temperature Adjustment:
The water heater allows for easy temperature adjustment, typically via a remote control or integrated display, within a range of 85°F to 140°F. Refer to the unit's display or remote control for specific instructions on setting the desired temperature.
Hot Water Delivery:
Upon opening a hot water faucet, the unit's spark ignition system will activate to heat water on demand. There may be a brief delay (approximately 35-45 seconds, depending on pipe length) before hot water reaches the faucet. For consistent hot water, turn the tap to full hot until the desired temperature is achieved, then adjust as needed.
Image: Hot water steaming from a modern faucet, illustrating on-demand hot water delivery.
Image: A person bathing a dog, demonstrating the continuous hot water supply for various uses.
Maintenance
Regular maintenance ensures the longevity and efficient operation of your tankless water heater.
- Annual Flushing: It is recommended to flush the system once per year using a hose through the valve system. This helps prevent mineral buildup and maintain efficiency.
- Professional Inspection: Consider an annual inspection by a qualified technician to check all components, connections, and overall system health.
Troubleshooting
If you experience issues with your Rheem RTG-84DVLN water heater, consider the following general troubleshooting steps before contacting support:
- No Hot Water: Check the gas supply and electrical power connection. Ensure the unit is receiving power and the gas valve is open.
- Inconsistent Temperature: Verify that the water flow rate is within the unit's operating parameters. Very low flow rates might cause the unit to cycle on and off.
- Error Codes: Consult the full user manual for a list of error codes and their corresponding solutions.
For persistent problems or complex issues such as circuit board malfunctions, contact Rheem customer support or a certified service technician.
Specifications
| Specification | Detail |
|---|---|
| Brand | Rheem |
| Model Number | RTG-84DVLN |
| Product Dimensions | 10"W x 26"H |
| Special Features | Low NOx, all-copper heat exchanger, hot-start programming, universal venting compatibility |
| Color | Gray |
| Voltage | 120 Volts |
| Maximum Flow Rate | 8.4 Gallons Per Minute |
| Maximum Temperature | 140 Degrees Fahrenheit |
| Efficiency | 0.82 |
| Style | Indoor Installation |
| Mounting Type | Wall |
| Is Electric | No |
| Item Weight | 54 pounds |
| Finish | Stainless Steel |
| Certification | Energy Star |
| Included Components | Control Board, Inlet Thermistor, Heat Exchanger Thermistor, Outlet Thermistor, Ambient Thermistor, Vent High Temperature Limit Switch, Thermistor Wiring Harness, Gas Control Valve, Gas Control Wiring Harness, Burner Assembly, Igniter Coil, Ignitor Rod, Blower Motor, Blower Case, Burner Manifold, Flame Rod, Flame Rod Wire, Gas Inlet Connector, Water Control Valve, Bypass Assembly, Inlet Water Filter, Hot Water Connector, Remote Control Terminal Block, Remote Control Terminal, Neutralization Replacement Kit, Exhaust Vent Outlet Connector, Air Intake Inlet Connector, Gas Shutoff Valve, Replacement Screw Kit, Replacement O-Ring Kit |
Warranty Information
Warranty coverage for the Rheem RTG-84DVLN water heater may vary based on the region of purchase and installation. It is crucial to register your product with Rheem upon installation to ensure proper warranty activation.
Note: Some customers have reported that units purchased in one country (e.g., USA) and installed in another (e.g., Canada) may not be covered under warranty. Always verify warranty terms and conditions specific to your location and purchase source.
Support
For technical assistance, service, or to inquire about parts, please contact Rheem Customer Support. Have your model number (RTG-84DVLN) and serial number ready when contacting support.
You can find contact information for Rheem Customer Support on the official Rheem website or in the documentation included with your product.
