1. Product Overview
The Ranein Electric Tankless Water Heater provides on-demand hot water for residential whole-house applications. Its compact design and high efficiency make it a space-saving and energy-efficient solution for endless hot water supply.
Key Features:
- On-Demand Heating: Provides instant hot water without preheating, saving energy.
- High Efficiency: Thermal efficiency up to 99.8%, reducing heating costs significantly.
- Compact Design: Smaller than traditional tank-type water heaters, allowing flexible installation.
- LED Temperature Display: Easy-to-read display with knob controls for precise temperature adjustment (86°F to 131°F).
- Multiple Safety Protections: Includes leakage protection, overheating protection, and damp proofing for safe operation.
- Multi-Point Usage: Suitable for 2-4 usage points simultaneously, providing ample hot water.
Figure 1: Front view of the Ranein Electric Tankless Water Heater.
2. Safety Information
WARNING: Read all safety instructions before installation and use. Failure to follow these instructions may result in electric shock, fire, property damage, or death.
- Ensure the water heater is sized correctly for your hot water needs (27 kW, 240 volts).
- Requires 3 x bipolar 40 amps circuit breakers. Professional installation is recommended. Consult a qualified electrician prior to purchase and installation.
- The unit dimensions are 13.8" x 3.1" x 18.7". Water connection is 3/4" NPT.
- Keep the water heater out of reach of children to prevent accidental temperature adjustments.
- The outlet water pipe can become very hot. Ensure it is out of reach of children.
- The unit is protected by multiple features: leakage protection, overheating protection, and damp proof.
- Every unit undergoes strict tests to ensure 100% safety and is listed by CSA.
Figure 2: Multiple safety features including overheat, dry combustion, IPX4 waterproof, and leakage protection.
3. Installation Guide
Proper installation is crucial for the safe and efficient operation of your Ranein Electric Tankless Water Heater. It is highly recommended that installation be performed by a licensed professional.
3.1. Pre-Installation Steps
- Unpack and Inspect: Carefully remove the water heater from its packaging. Inspect for any shipping damage. Ensure all components listed in the user manual are present.
- Open the Shell: Use a screwdriver to open the shell of the unit as shown in the video to access internal components for mounting and wiring.
- Choose Installation Location: Select a location that is protected from freezing temperatures and direct sunlight. Ensure there is sufficient space around the unit for maintenance. The unit must be mounted vertically on a solid wall.
- Positioning and Punching: Use the provided template to mark the drilling points on the wall. Drill holes at the marked locations.
- Mounting Screws: Insert wall anchors into the drilled holes and secure the mounting screws, leaving a small gap for hanging the unit.
Video 1: Installation steps for the Ranein Electric Tankless Water Heater, including opening the shell, positioning, mounting, and connecting pipes and wires.
Figure 3: Installation diagram with dimensions (13.8"W x 18.7"H) and required clearances.
3.2. Plumbing Connections
- Water Connections: Connect the cold water supply to the blue inlet and the hot water outlet to the red outlet. The water connection is 3/4" NPT.
- Pressure Relief Valve: Install a pressure relief valve (not included) on the cold water inlet line to prevent over-pressurization.
- Flush Lines: Before connecting to the unit, flush the water lines to remove any debris.
- Leak Check: After connecting, slowly open the water supply and check for any leaks.
3.3. Electrical Connections
WARNING: Electrical work must be performed by a qualified electrician. Disconnect all power before making any electrical connections.
- Power Requirements: This 27 kW unit requires 240 volts (AC) and 3 x bipolar 40 amps circuit breakers. Ensure your electrical infrastructure can accommodate this.
- Wiring: Connect the appropriate gauge wires (3 x 8 AWG for 27kW) to the terminal block inside the unit. Ensure proper grounding.
- Secure Connections: Tighten all electrical connections securely.
Figure 4: Table detailing cable gauge and breaker requirements for different power levels.
4. Operating Instructions
The Ranein Electric Tankless Water Heater features simple knob controls and an LED display for easy operation.
4.1. Initial Startup
- Ensure Water Flow: Before turning on power, ensure water is flowing through the unit to prevent dry heating.
- Restore Power: Once plumbing and electrical connections are complete and checked, restore power to the unit at the circuit breaker.
- Power On: The unit will power on and the LED display will illuminate.
4.2. Temperature Control
- Adjust Temperature: Use the knob control to set your desired water temperature. The temperature range is from 86°F to 131°F, adjustable in 1°F increments.
- LED Display: The LED display shows the current temperature setting.
- Constant Temperature: The intelligent constant temperature system ensures stable hot water output.
Figure 5: The intuitive LED display and control knob for precise temperature management.
5. Maintenance
The Ranein Electric Tankless Water Heater is designed for low maintenance. Due to its non-scaling nature, special descaling procedures are generally not required.
- Regular Cleaning: Periodically wipe the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners.
- Inspect Connections: Annually inspect water and electrical connections for any signs of leaks or wear.
- Filter Cleaning (if applicable): If your local water quality is poor and a filter is installed, clean or replace the filter as needed.
6. Troubleshooting
If you experience issues with your Ranein Electric Tankless Water Heater, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water / Unit not turning on | No power, tripped breaker, no water flow, or internal fault. | Check circuit breakers. Ensure water supply is open. Verify electrical connections. If problem persists, contact customer support. |
| Water not hot enough | Temperature setting too low, insufficient flow rate, or cold incoming water. | Increase temperature setting. Reduce flow rate at the faucet. Ensure the unit is correctly sized for your climate. |
| Error code displayed | Specific error condition (e.g., overheating, sensor fault). | Refer to the full user manual (PDF) for specific error code meanings and solutions. Disconnect power, wait a few minutes, and reconnect. |
| Water leaks | Loose plumbing connections, damaged seals, or internal leak. | Tighten connections. If leaks persist, immediately turn off water supply and power, then contact customer support. |
For more detailed troubleshooting, please refer to the complete Installation Manual and Instructions for Use documents provided with your product or available online.
7. Specifications
| Brand | Ranein |
| Model Number | RE27K |
| Product Dimensions | 13.8"W x 3.1"D x 18.7"H |
| Wattage | 27 kW |
| Voltage | 240 Volts (AC) |
| Circuit Breaker Required | 3 x bipolar 40 amps |
| Water Connection | 3/4" NPT |
| Maximum Temperature | 131 Degrees Fahrenheit |
| Efficiency | 99.8% |
| Item Weight | 17.41 pounds |
| Mounting Type | Wall |
| Included Components | Water Heater x1, User Manual x1, Installation Template x1 |
8. Warranty and Support
Ranein is committed to providing high-quality products and excellent customer service.
- Warranty: This product comes with a 2-year warranty. Please retain your proof of purchase for warranty claims.
- Professional After-Sales Team: Ranein offers a professional after-sales team to assist with any product-related inquiries or issues.
- Installation Guidance: Comprehensive installation guidance is available to ensure proper setup.
- Product Consultation: For any questions regarding product features, compatibility, or usage, feel free to contact our support team.
For further assistance, please visit the Ranein Store on Amazon or refer to the official PDF documents:
