Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Ranein Propane Gas Tankless Water Heater. Please read this manual thoroughly before installation or use and retain it for future reference. This appliance is designed to provide instant hot water for residential use, offering a maximum flow rate of 5.3 GPM and a heating capacity of 130,000 BTU.
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.
- Ensure proper ventilation. This is an indoor unit and requires a suitable venting system.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- Installation must be performed by a qualified professional in accordance with local codes and regulations.
- In cold weather, if the water heater is not used for a long time, the pressure relief valve needs to be opened to drain the remaining water in the water heater to prevent freezing damage.
- This product is not recommended for use in areas over 2,000 feet in elevation without proper adjustments.
Figure 1: Overview of the 2+8 Product Protection System, highlighting various safety mechanisms integrated into the Ranein Tankless Water Heater for enhanced user safety and appliance longevity.
Product Overview
The Ranein Tankless Water Heater is designed for efficiency and reliability, providing on-demand hot water without the need for a storage tank. Key features include a bottom-mounted fan for improved combustion, an oxygen-free copper heat exchanger for superior thermal conductivity, and a multi-stage burner for precise temperature control.
Figure 2: Front view of the Ranein Tankless Water Heater, showcasing its compact design and integrated digital display.
Figure 3: Internal components of the water heater, illustrating the design for safer and longer life through oxygen-free copper, closed combustion, and a bottom fan.
Key Components:
- Bottom Fan: Ensures more complete combustion and stable operation.
- Oxygen-Free Copper Heat Exchanger: Provides excellent thermal conductivity and corrosion resistance.
- 5-Stage Burner: Allows for precise flame control and efficient heating.
- Closed Combustion Chamber: Enhances safety and combustion efficiency by isolating the combustion process.
- Touch Panel with LED Display: For easy monitoring and adjustment of settings.
Specifications
| Feature | Specification |
|---|---|
| Model Number | RH13K-NG |
| Power Source | Propane Gas |
| Heating Capacity | 130,000 BTU |
| Maximum Flow Rate | 5.3 Gallons Per Minute (GPM) |
| Installation Method | Wall Mounted (Indoor) |
| Rated Voltage | 120 Volts (AC) |
| Water Pressure Range | 0.025 ~ 0.8 MPa |
| Gas Pressure | 2800Pa/2000Pa |
| Temperature Rise Range | 95°F - 149°F |
| Water Inlet Fitting | Standard 1/2" NPT |
| Gas Inlet Fitting | Standard 3/4" NPT |
| Product Dimensions | 23.15"L x 14.17"W x 5.9"H (53 x 53 x 22.5 cm) |
| Item Weight | 15.9 kg (35 lbs) |
Figure 4: Detailed dimensions and connection specifications of the water heater.
Setup and Installation
Installation of the Ranein Tankless Water Heater should only be performed by a licensed professional to ensure compliance with all local and national plumbing and gas codes. This unit is designed for indoor installation.
Pre-Installation Checklist:
- Verify that the installation location is indoors, has adequate ventilation, and is protected from freezing temperatures.
- Ensure the wall structure can support the weight of the unit (approx. 15.9 kg).
- Confirm availability of appropriate gas supply (Propane Gas) and water connections (1/2" NPT for water, 3/4" NPT for gas).
- Ensure electrical supply (AC110V/60Hz) is available at the installation site.
- Unpack the unit and inspect for any shipping damage.
Installation Steps (Summary - Professional Installation Required):
- Mount the water heater securely to a suitable wall using appropriate fasteners.
- Connect the cold water inlet and hot water outlet lines. Ensure all connections are watertight.
- Connect the gas supply line to the gas inlet. Perform a leak test on all gas connections.
- Install the required venting system according to manufacturer instructions and local codes.
- Connect the electrical power supply.
- Purge air from the water lines before initial operation.
Figure 5: Example of an indoor installation, emphasizing the compact size and aesthetic integration.
Operating Instructions
Once properly installed and connected, operating your Ranein Tankless Water Heater is straightforward via its intuitive touch panel and LED display.
Initial Startup:
- Ensure all water and gas valves are open.
- Turn on the electrical power to the unit.
- Open a hot water faucet in your home. The unit will detect water flow and automatically ignite to heat the water.
- Allow water to run for a few minutes to ensure all air is purged from the system.
Adjusting Temperature:
Use the touch controls on the LED display to set your desired water temperature. The display will show the current temperature setting. The unit maintains a precise temperature within ±1°F of your setting.
Figure 6: The touch panel and LED display for temperature control and status monitoring.
Figure 7: Temperature stability graph, demonstrating the unit's ability to maintain a consistent hot water temperature.
Quiet Operation:
The sealed structure of the Ranein water heater is designed to minimize operational noise, ensuring a quiet experience even during ignition and continuous use.
Maintenance
Regular maintenance is crucial for the longevity and efficient operation of your tankless water heater. It is recommended to have the unit inspected and serviced by a qualified professional annually.
User Maintenance:
- Exterior Cleaning: Wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Winterization (if applicable): If the unit will not be used for an extended period in freezing temperatures, ensure the pressure relief valve is opened to drain all remaining water from the system to prevent freeze damage.
Professional Maintenance (Recommended Annually):
- Descaling: Hard water can lead to mineral buildup (scale) in the heat exchanger, reducing efficiency. A professional can descale the unit using a descaling solution.
- Vent System Inspection: Check for any blockages, leaks, or corrosion in the exhaust venting system.
- Gas Line Inspection: Verify gas connections are secure and free of leaks.
- Burner and Ignition System Check: Ensure proper operation and cleanliness of the burner and ignition components.
Troubleshooting
This section provides solutions to common issues you might encounter. For problems not listed here or if solutions do not resolve the issue, contact a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Unit not igniting | No water flow, gas supply off, power off, or ignition failure. | Ensure hot water faucet is open, check gas valve, verify power supply, or consult a technician for ignition issues. |
| Water not hot enough | Temperature setting too low, insufficient gas pressure, or scaling in heat exchanger. | Increase temperature setting on display. Check gas supply. Consider professional descaling. |
| Unit cycles on and off rapidly | Insufficient water flow, or flow sensor issue. | Ensure adequate water flow (e.g., open faucet fully). Check for kinks in water lines. |
| Error code displayed | Specific system malfunction. | Refer to the full manual (if available) for specific error code meanings, or contact customer support. |
Warranty and Support
Ranein provides a 2-year warranty for this tankless water heater. This warranty covers defects in materials and workmanship under normal use and service.
For warranty claims, technical assistance, or any questions regarding installation and operation, please do not hesitate to contact Ranein customer support. Our team is dedicated to serving you wholeheartedly.
Please have your model number (RH13K-NG) and purchase date available when contacting support.
