1. Introduction
Thank you for choosing the Ranein RE18K Tankless Electric Water Heater. This advanced unit is designed to provide instant, endless hot water on demand, offering superior energy efficiency and space-saving benefits compared to traditional tank heaters. This manual provides essential information for safe installation, operation, and maintenance of your new water heater. Please read it thoroughly before installation and use.
The Ranein RE18K Tankless Electric Water Heater, designed for instant hot water.
2. Important Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read this manual thoroughly before installing or servicing this equipment.
This 18kW 240V tankless electric water heater unit requires specific electrical infrastructure. It needs 2 dedicated 240V circuits, each protected by a 40A double-pole breaker, and connected with 2 x 8 AWG cables. Professional installation by a qualified electrician is highly recommended to ensure safety and compliance with local electrical codes.
Crucial electrical specifications: 75 Amps total power, requiring 2 x 40 AMP breakers.
The Ranein RE18K is CSA-certified, meeting US and Canadian safety standards. It incorporates multiple safety features including leakage protection, overheat safeguards, and a damp-proof design (IPX4 water resistance). Every unit undergoes strict testing to ensure 100% safety. The stainless steel heating elements are designed to resist scale buildup, contributing to long-term safety and performance.
Overview of safety features: Overheat Protection, Dry Combustion Protection, IPX4 Water Proof, and Leakage Protection.
3. Product Overview
The Ranein RE18K is a compact and powerful tankless water heater designed for whole-house applications, capable of handling 2-3 household water points with a flow rate of up to 4.3 GPM. Its sleek design features an intuitive LED display and a control knob for precise temperature adjustments.
The Ranein RE18K unit with its digital temperature display and control knob.
Key features include:
- Instant Hot Water: Heats water in approximately 3 seconds, eliminating waiting times.
- Energy Efficiency: Up to 99% thermal efficiency, saving up to 60% on heating costs by only heating water when needed.
- Compact Design: Significantly smaller than traditional tank heaters, allowing for flexible installation.
- Precise Temperature Control: Maintain consistent water temperature with intelligent constant temperature technology.
- Multi-Point Water Supply: Supports simultaneous hot water delivery to multiple fixtures like kitchen sinks, showers, and bathtubs.
Visual representation of key benefits: visualizing temperature, 3-second heat-up, unlimited hot water, intelligent constant temperature, multiple protections, and compact size.
Illustration of the RE18K supporting hot water supply to multiple points in a household, including kitchen, bathroom, and shower.
4. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your Ranein RE18K water heater. It is strongly recommended that installation be performed by a licensed plumber and a qualified electrician.
4.1. Electrical Requirements
The RE18K model (18kW) requires a robust electrical setup:
- Voltage: 240V
- Circuits: 2 dedicated 240V circuits
- Breakers: 2 x 40A double-pole breakers
- Cables: 2 x 8 AWG cables
- Maximum Amp: 113 AMP
Ensure your circuit breaker panel can accommodate these requirements. Consult an electrician prior to purchase and installation to verify your home's electrical infrastructure is suitable.
Detailed installation diagram showing dimensions, electrical connections to a circuit breaker panel, and key requirements.
4.2. Water Connection
- Water Connection Size: 3/4" NPT
Ensure cold and hot water pipes are installed in advance at the desired installation location.
4.3. Installation Requirements Summary
| Mode | KW | Voltage | Maximum Amp | Breaker | Cable Required | Pipe Fitting | Weight |
|---|---|---|---|---|---|---|---|
| RE18K | 18kW | 240V/60A | 113 AMP | 2 x 40 AMP | 2 x 8 AWG | 3/4" NPT | 16.7 lbs |
Detailed chart for cable gauge and power requirements based on power output.
5. Operating Instructions
The Ranein RE18K is designed for intuitive operation, providing instant hot water with precise temperature control.
5.1. Temperature Control
Adjust the water temperature seamlessly using the tactile control knob. The LED display will show the current temperature setting. You can set your ideal temperature between 86°F (30°C) and 131°F (55°C) in 1°F increments. Once set, the unit will maintain a consistent and stable output.
The Ranein system provides accurate temperature control, minimizing fluctuations compared to other products.
5.2. Instant Hot Water
Equipped with rapid heating technology, the RE18K delivers hot water almost instantly, typically within 3 seconds. There is no need for preheating, ensuring hot water is available whenever you need it, minimizing wait time and maximizing comfort.
6. Maintenance
The Ranein RE18K Tankless Electric Water Heater is designed for low maintenance. Its stainless steel heating elements help prevent scale buildup, which is a common issue in traditional water heaters. This non-scaling design means no special maintenance is typically required for descaling.
However, regular checks are recommended:
- Periodically inspect the unit for any visible leaks or damage to the casing or connections.
- Ensure the area around the water heater remains clear and free from obstructions to allow for proper ventilation.
- For optimal performance and longevity, consider having a qualified professional inspect the unit annually.
The electro-hydraulic separation design prevents limescale buildup, ensuring fresh hot water and reducing maintenance needs.
7. Troubleshooting
If you experience issues with your Ranein RE18K water heater, please refer to the following common troubleshooting tips. For problems not listed here or if issues persist, contact Ranein customer support.
- No Hot Water: Check if the circuit breakers are tripped. Ensure the unit is receiving power. Verify water flow to the unit.
- Insufficient Hot Water: Confirm the temperature setting is adequate. Check if the flow rate is too high for the unit's capacity, especially during peak usage.
- Temperature Fluctuations: Ensure stable water pressure. Verify that the unit's inlet water temperature is within its operating range.
- Error Codes on Display: Refer to the specific error code in a more detailed troubleshooting guide (if available, or contact support).
Always ensure the unit is disconnected from power before attempting any inspection or repair.
8. Specifications
| Specification | Detail |
|---|---|
| Brand | Ranein |
| Model Number | RE18K |
| Product Dimensions | 13.8"W x 3.1"D x 18.7"H |
| Item Weight | 17.41 pounds |
| Color | Gray |
| Special Feature | LED Display |
| Included Components | Water heater ×1 |
| Batteries Required? | No |
| Water Connection | 3/4" NPT |
| Flow Rate | Up to 4.3 GPM |
| Temperature Range | 86°F to 131°F (30°C to 55°C) |
| Certifications | CSA Certified |
9. Warranty and Support
Ranein is committed to providing high-quality products and excellent customer service.
9.1. Warranty Information
Your Ranein RE18K Tankless Electric Water Heater comes with a 2-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service.
9.2. Customer Support
Our professional after-sales team is available to assist you with any questions or concerns. We provide:
- Installation guidance
- Product consultation
- Troubleshooting assistance
For support, please contact us at:
Phone: (424) 452-2630
Ranein customer support offers 2-year warranty, professional after-sales team, installation guidance, and product consultation.
