Ranein Tankless Electric Water Heaters
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Dear Ranein User
Welcome to the world of Ranein electric water heaters! We appreciate your choice to bring comfort and warmth to your home. This manual is your guide to understanding and optimizing your Ranein experience.
Our commitment to quality, innovation, and environmental responsibility ensures that your Ranein electric water heater meets and exceeds your expectations. Thank you for choosing Ranein your trusted partner in creating a cozy and efficient home.
Best regards,
The Ranein Team
About Us
At Ranein, we are committed to developing innovative tankless electric water heaters to improve the lives of homes and businesses by providing a constant flow of hot water for everyday use.
Our tankless electric water heaters not only provide a constant flow of hot water, they also optimize space, save time, reduce costs and help reduce energy and water consumption. Meet North American safety standards for a safe and reliable hot water solution.
Technologically advanced Ranein products are designed to be globally versatile, meeting the needs of a wide range of applications from homes of any size to dynamic commercial environments such as offices, restaurants and even recreational vehicles. Easy installation, reliable performance and strong customer support are the hallmarks of every Ranein tankless electric water heater.
Discover the warmth, efficiency and global adaptability of Ranein tankless electric water heaters with us. Redefine your hot water experience and make every moment comfortable and sustainable.
Spreading Cozy Comfort Across Your Entire Residence
Experience the comforting warmth of Ranein tankless electric water heaters whether you're in the shower, washing dishes, doing laundry, working in the garage, or enjoying a refreshing splash in your pool.
Ranein ensures your happiness by providing a continuous, consistent, and on-demand supply of warm water. With Ranein, you have the assurance that the warmth you expect is readily available, allowing you to effortlessly reduce water and energy waste. It's a feeling of warmth that permeates every aspect of your daily life!
How tankless electric water heaters work
1. Water enters the system through the cold water inlet pipe.
2. Flow sensor detects the gallons-per-minute flow rate and sends the information to the control board.
3. Inlet thermostat reads the temperature of the incoming water.
4. Control board calculates the incoming temperature and flow rate to determine the appropriate power output to reach the set temperature point.
5. Triacs send the necessary voltage to the heating elements to achieve the correct power output.
6. Heating elements activate and heat the outgoing water to the appropriate temperature.
Application Types:
- Whole House: ? Provides hot water to your entire home
- Point-of-Use: ? Endless hot water for your kitchen or bathroom
- Room: ? Provide multiple points of hot water for your room. Suitable for bathrooms or beauty treatments, etc.
Point-of-Use RE4.5K
Discover the Ranein RE4.5K point-of-use model, featuring 4.5kW power for on-demand and continuous hot water, tailored specifically for single-sink handwashing applications. Ideal for various settings, including bathrooms, wet bars, offices, recreational vehicles, and remote use. Non-thermostatic with digital displays for output temperature, Ranein water heaters are renowned for their durability, compact design.
| Voltage | 120 V~ |
|---|---|
| Power | 4.5 kW |
| Min. Required Circuit Breaker Size | 1x40 AMP |
| Max. Amperage | 37.5 A |
| Recommended Wire Size | 10 AWG |
| Min. Water Flow to Activate the Unit | 0.32 GPM (1.2 L/min) |
| Safe Operating Pressure | 2.9 PSI - 87.02 PSI |
| Water Connections | 1/2" NPT |
| Installation | Wall mounted |
| Temperature Setting | Digital Panel |
| Temp. Increase Per GPM | 0.8 GPM: 57°F, 1.0 GPM: 47°F, 1.2 GPM: 42°F, 1.5 GPM: 33°F |
| Dimensions | 8.66"×6.7"×2.34" |
| Weight | 3.5 lbs |
Room Models: RE6.5K, RE9K, RE11K
Introducing the Ranein RE6.5K, RE9K, RE11K point-of-use models with 6.5kW, 9kW, and 11kW power respectively, equipped with self-modulating technology for energy-efficient use. Ideal for handwashing in cooler climates, these tankless electric water heaters are perfect for bathrooms, wet bars, or office breakrooms. In warmer climates, the RE6.5K, RE9K, RE11K can supply two small sinks simultaneously or one larger sink application (1 gallon per minute). Digital displays with adjustable output temperatures in 1-degree increments enhance user control. Ranein water heaters offer durability, compactness, and easy installation.
| Model | Voltage | Power | Min. Required Circuit Breaker Size | Max. Amperage | Recommended Wire Size | Min. Water Flow to Activate the Unit | Safe Operating Pressure | Water Connections | Installation | Temperature Setting | Temp. Increase Per GPM | Dimensions | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RE6.5K | 240 V~ | 6.5 kW | 1x30 AMP | 27 A | 12 AWG | 0.475 GPM (1.8 L/min) | 2.9 PSI - 87.02 PSI | 1/2" NPT | Wall mounted | Digital Panel | 0.8 GPM: 57°F, 1.0 GPM: 47°F, 1.2 GPM: 42°F, 1.5 GPM: 33°F | 14"×8 4/5"×3" | 5.5 lbs |
| RE9K | 240 V~ | 9 kW | 1x40 AMP | 37.5 A | 10 AWG | 0.475 GPM (1.8 L/min) | 2.9 PSI - 87.02 PSI | 1/2" NPT | Wall mounted | Digital Panel | 0.8 GPM: 79°F, 1.0 GPM: 66°F, 1.2 GPM: 56°F, 1.5 GPM: 42°F | 14"×8 4/5"×3" | 5.8 lbs |
| RE11K | 240 V~ | 11 kW | 1x60 AMP | 45.8 A | 8 AWG | 0.475 GPM (1.8 L/min) | 2.9 PSI - 87.02 PSI | 1/2" NPT | Wall mounted | Digital Panel | 0.8 GPM: 98°F, 1.0 GPM: 83°F, 1.2 GPM: 67°F, 1.5 GPM: 49°F | 14"×8 4/5"×3" | 6.5 lbs |
Whole House Models: RE18K, RE27K
Explore the versatility of Ranein RE18K, RE27K, perfect for handwashing in cooler climates and suitable for bathrooms, small sinks, or office breakrooms. RE9K supports applications requiring 0.5 to 1.0 gallon per minute when used as a point-of-use water heater. In warmer climates, the RE18K, RE27K delivers continuous hot water at up to 2.6 gallons per minute, supporting bathroom showers or kitchen sinks. Both models feature digital displays with adjustable output temperatures in 1-degree increments. Ranein water heaters are durable, compact, and easy to install.
| Model | Voltage | Power | Min. Required Circuit Breaker Size | Max. Amperage | Recommended Wire Size | Min. Water Flow to Activate the Unit | Safe Operating Pressure | Water Connections | Installation | Temperature Setting | Temp. Increase Per GPM | Dimensions | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RE18K | 240 V~ | 18 kW | 2x38 AMP | 2x40 A | 2x8 AWG | 0.66 GPM (2.5 L/min) | 2.9 PSI - 87.02 PSI | 3/4" NPT | Wall mounted | Digital Panel | 0.8 GPM: 176°F, 1.0 GPM: 132°F, 1.2 GPM: 111°F, 1.5 GPM: 93°F | 13.8"×18.7"×3.15" | 15 lbs |
| RE27K | 240 V~ | 27 kW | 3x38 AMP | 3x40 A | 3x8 AWG | 0.79 GPM (3 L/min) | 2.9 PSI - 87.02 PSI | 3/4" NPT | Wall mounted | Digital Panel | 0.8 GPM: 248°F, 1.0 GPM: 198°F, 1.2 GPM: 166°F, 1.5 GPM: 139°F | 13.8"×18.7"×3.15" | 15 lbs |
Tankless vs. Tank Water Heater Comparison
| Feature | Tankless Electric Water Heater | Tank Water Heater |
|---|---|---|
| Size | 90% smaller than traditional water heater | Need quite a bit of room to install (1.5K-3KW) |
| Power Supply | 4.5, 6.5, 9, 11, 18, 27 KW | (Not specified for tank) |
| Performance | Water is heated on demand, not stored in a tank | Only holds a fixed amount of hot water |
| Energy Use | Save 50% on water heating | Holds heated water all-day |
| Installation | Can be installed anywhere as long as cold and hot water pipes are installed in advance | Needs to be installed on the load-bearing wall |
| Cleaning & Maintenance | Non-scaling, so no special maintenance is required | Must flush tank twice a year to remove sediment and mineral scale |
Benefits:
- ? Save space
- ⚡ Save energy
- ? Endless hot water
- ⏱️ Save time
- ? Save money
3 Smart Steps for Endless Hot Water Sizing
Choosing the right Ranein tankless electric water heater depends on your climate. Refer to our map, chart, and key to determine which model best suits.
The flow rate for each symbol is represented in the GPM (gallons-per-minute) column of the Application Key. The Range column indicates variations in GPM for faucets and showers based on manufacturer and style.
Application Key
| Description | GPM | Range |
|---|---|---|
| Low Flow Faucet | 0.5 | 0.5 - 0.9 |
| Bathroom Faucet | 1 | 0.5 - 1.3 |
| Kitchen Faucet | 1.5 | 1.0 - 2.2 |
| Shower | 2 | 1.5 - 2.5 |
Sizing Chart
Match your location color on the map to the corresponding chart below to determine unit capacity, or how many faucets and showers can be supported simultaneously.
| Model | Inlet Temp: 37°F | Inlet Temp: 42°F | Inlet Temp: 47°F | Inlet Temp: 52°F | Inlet Temp: 57°F | Inlet Temp: 62°F | Inlet Temp: 67°F | Inlet Temp: 72°F | Inlet Temp: 77°F | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | kW | GPM Approx Usage | |
| RE6.5K | 6.5 | 0.7 | 6.5 | 0.7 | 6.5 | 0.8 | 6.5 | 0.8 | 6.5 | 0.8 | 6.5 | 0.8 | 6.5 | 1.0 | 6.5 | 1.3 | 6.5 | 1.5 |
| RE9K | 9 | 0.9 | 9 | 1.0 | 9 | 1.1 | 9 | 1.2 | 9 | 1.3 | 9 | 1.4 | 9 | 1.6 | 9 | 1.9 | 9 | 2.2 |
| RE11K | 11 | 1.1 | 11 | 1.4 | 11 | 1.5 | 11 | 1.7 | 11 | 1.8 | 11 | 2.0 | 11 | 2.3 | 11 | 2.7 | 11 | 3.1 |
| RE18K | 18 | 1.8 | 18 | 1.9 | 18 | 2.1 | 18 | 2.3 | 18 | 2.5 | 18 | 2.8 | 18 | 3.2 | 18 | 3.7 | 18 | 4.3 |
| RE27K | 27 | 2.7 | 27 | 2.9 | 27 | 3.1 | 27 | 3.4 | 27 | 3.8 | 27 | 4.2 | 27 | 4.8 | 27 | 5.5 | 27 | 6.5 |
| RE4.5K | 4.5 | 0.6 | 4.5 | 0.7 | 4.5 | 0.8 | 4.5 | 0.9 | 4.5 | 1.0 | ||||||||
