Introduction
This manual provides essential information for the safe and efficient operation of your Ranein 13kW Tankless Electric Water Heater. Please read all instructions carefully before installation and use. This appliance is designed to provide instant and continuous hot water for your household needs, featuring advanced safety mechanisms and precise temperature control.

Front view of the Ranein 13kW Tankless Electric Water Heater, showcasing its compact design and the integrated LED digital display for temperature and operational status.
Safety Information
Your Ranein Tankless Electric Water Heater is equipped with multiple safety features to ensure reliable and secure operation. Adherence to these guidelines is crucial for preventing accidents and ensuring longevity of the unit.
- Water-Electricity Separation: The internal design ensures complete separation of water and electrical components, significantly reducing the risk of leakage and electrical hazards.
- Overheat Protection: The unit automatically shuts off if the water temperature exceeds safe limits, preventing scalding and damage to the heater.
- Leak Protection: Built-in sensors detect water leaks and trigger an automatic shutdown to prevent water damage.
- Anti-scale Design: Designed to minimize scale buildup, which helps maintain heating efficiency and prolong the lifespan of the unit.

This diagram highlights the internal design feature of water and electricity separation, which enhances safety by preventing leakage hazards. It also illustrates the rapid and uniform heating process compared to traditional heating elements.
Setup and Installation
Professional installation by a qualified electrician and plumber is highly recommended to ensure proper setup and compliance with local codes. Do not attempt to install this unit if you are not qualified.
Installation Diagram

This diagram illustrates the recommended installation process, including dimensions of the unit and electrical connection to a circuit breaker panel. Professional installation by a qualified electrician is advised.
Electrical Requirements
Ensure your electrical system meets the specific requirements for the 13kW model. Incorrect wiring can lead to malfunction or safety hazards.

A table detailing the required cable gauge and breaker size for different power outputs (kW) of Ranein tankless water heaters. For the 13kW/240V model, a 6AWG cable and a 60A breaker are required.
The required water connection for this unit is 1/2" NPT. Ensure all plumbing connections are secure and leak-free before powering on the unit.
Operating Instructions
Understanding the Display

A detailed view of the LED smart temperature control display, showing real-time information such as inlet temperature, power consumption (kW), flow rate (GPM), approximate usage, and the set temperature. It also indicates touch controls for power, temperature adjustment, and unit switching (Celsius/Fahrenheit).
The LED display provides real-time feedback on the water heater's status. You can view the inlet temperature, current power usage (kW), water flow rate (GPM), and the set temperature. The display also shows approximate usage indicators.
Temperature Control
Use the touch controls on the display to adjust the desired water temperature. The unit features a constant temperature control function, ensuring a stable hot water supply once the set temperature is reached. Press and hold the power button for 5 seconds to switch between Celsius and Fahrenheit display modes.
Maintenance
The Ranein Tankless Electric Water Heater is designed with an anti-scale feature, minimizing the need for frequent descaling. For general maintenance, periodically inspect the unit for any visible leaks or damage. Keep the exterior clean with a soft, damp cloth. Do not use abrasive cleaners or solvents.
Troubleshooting
If you encounter any issues with your water heater, please refer to the comprehensive troubleshooting guide available in the full installation manual. Common issues may include insufficient hot water, error codes on the display, or power interruptions. Always ensure the power supply is off before attempting any inspection or repair.
Specifications
| Feature | Detail |
|---|---|
| Brand | Ranein |
| Model Number | RE13K (13kW) |
| Power Source | Electric |
| Voltage | 240 Volts (DC) |
| Product Dimensions | 10.7"W x 7.9"H x 2.8"D |
| Color | Gray |
| Efficiency | 99% |
| Mounting Type | Wall |
| Item Weight | 8.36 pounds |
| Included Components | Water heater |
| Water Connection | 1/2" NPT |
Applications
The Ranein 13kW Tankless Electric Water Heater is versatile and suitable for a variety of settings, providing efficient hot water for both residential and commercial uses. Its compact design makes it ideal for spaces where traditional tank heaters are impractical.

Examples of suitable applications include kitchens, bathrooms, balconies, salons, apartment shower rooms, trailer RVs, and container houses.
Warranty and Support
Specific warranty details are not provided within this manual. For comprehensive warranty information, product support, or to contact customer service, please refer to the manufacturer's official website or the documentation included with your purchase.
An extended installation manual with detailed diagrams and instructions is available for download: Installation Manual (PDF)





