1. Product Overview
The Ranein 2025 GEN II Propane Gas Tankless Water Heater (Model RH10K-LPG) provides on-demand hot water for your home. This indoor unit delivers a maximum of 4.3 GPM (Gallons Per Minute) with 100,000 BTU, suitable for supplying 2-3 taps simultaneously. Its compact design and energy-efficient operation offer a modern solution for your hot water needs.

2. Key Features
- Endless Hot Water: Provides up to 4.3 GPM, ensuring continuous hot water for 2-3 simultaneous uses (e.g., shower, kitchen, bar).
- Steady Temperature: Advanced technology maintains a stable water temperature by automatically adjusting flow and heat, preventing sudden temperature changes.
- Multiple Smart Modes: Features include a 4-Season mode (auto-adapts to inlet temperature), Kitchen mode (adjustable 100°F), and Bathtub mode (50-800L with full-water beep).
- Energy-Saving: Heats water on demand, reducing standby energy waste compared to traditional tank heaters, leading to lower utility costs.
- Space-Saving Design: Compact, wall-mounted unit ideal for apartments, small homes, or renovations, freeing up floor space.
- Included Components: Comes with an exhaust pipe, eliminating the need for additional purchases.
- Durable Construction: Features an oxygen-free copper tank for reduced heat loss and standard 1/2" NPT water and gas ports for easy connection.
- Advanced Protection: Incorporates 2+8 product protection, including flame out, overheating, dry burning, over temperature, timeout, pipe blockage, high temperature lock, and excessive air pressure protection.


3. Setup and Installation
Professional Installation Required: This appliance must be installed by licensed professionals in accordance with all local codes and regulations. Improper installation can lead to serious injury or property damage.
Included Components:
- Tankless Water Heater Unit (Model RH10K-LPG)
- Vent Pipe
- Assembly Kit
- User's Manual
Elevation Note: This unit is not recommended for areas over 2,000 feet elevation. Consult a professional for installations at higher altitudes.

4. Operating Instructions
The Ranein tankless water heater features an intuitive LED display and temperature control panel for easy operation.
4.1. LED Temperature Control Panel
The front panel includes a digital LED display showing the current water temperature and operational status. Use the up and down arrows to adjust the desired temperature. The display also provides information on gas and water consumption.

4.2. Smart Modes
Select from various smart modes to optimize performance for different needs:
- 4-Season Mode: Automatically adapts to the incoming water temperature, providing consistent hot water year-round.
- Kitchen Mode: Delivers water at a preset 100°F, ideal for kitchen tasks. This temperature can be adjusted.
- Bathtub Mode: Allows for filling bathtubs with a specified volume (50-800L) and includes a full-water beep notification.

5. Maintenance
Regular maintenance ensures optimal performance and longevity of your tankless water heater. For detailed maintenance procedures, including flushing and checking connections, please refer to the comprehensive user manual included with your product.
6. Troubleshooting
If you encounter any issues with your Ranein tankless water heater, consult the troubleshooting section in the full user manual. Common issues often relate to power supply, gas supply, or water flow. For persistent problems, contact customer support.
7. Specifications
| Specification | Value |
|---|---|
| Brand | Ranein |
| Model Number | RH10K-LPG |
| Product Dimensions | 18.9"W x 8.8"H |
| Special Feature | LED Display |
| Color | Gray |
| Voltage | 120 Volts (AC) |
| Maximum Temperature | 149 Degrees Fahrenheit |
| Efficiency | Energy-efficient |
| Style | Propane |
| Mounting Type | Wall |
| Item Weight | 26.1 pounds |
| Included Components | Assembly Kit x1, Tankless Water Heater x1, User’s Manual x1, Vent Pipe x1 |
8. Safety Information
Your Ranein tankless water heater is designed with multiple safety features to ensure reliable operation. These include:
- Flame out protection
- Overheating protection
- Dry burning protection
- Over temperature protection
- Timeout protection
- Pipe blockage protection
- High temperature lock protection
- Excessive air pressure protection
Always ensure proper ventilation and follow all installation guidelines to prevent hazards. Never attempt to repair the unit yourself if you are not a qualified professional.

9. Warranty and Support
Ranein offers a 2-year warranty against manufacturing defects for this product. For comprehensive product problem-solving services, technical assistance, or any inquiries, please contact our support team:
- Email: service@ranein.net
- US Phone: (424)-452-2630






