Product Overview
The Ranein WarmSlim 4 Gallon Electric Mini Tank Water Heater is designed for point-of-use applications, providing rapid hot water for sinks, RVs, and compact spaces. Its compact design allows for under-sink or wall-mounted installation.
Key Features
- Rapid Temperature Delivery: Features a 1440W molybdenum-gold heating rod for up to 99% heating efficiency. Provides quick hot water and rapid temperature recovery. The adjustable temperature range is from 86°F (30°C) to 167°F (75°C).
- Compact Design: Unlike traditional tank water heaters, this model adopts a long and slim design, fitting efficiently under a kitchen sink or within a cabinet. It supports both wall-mounted and under-sink installation. Product dimensions are 20"W x 10"H x 10"D.
- Durable Construction: Utilizes a three-layer inner tank structure consisting of an Enamel layer, Density layer, and Decarburized steel plate layer. This construction ensures corrosion resistance, rust resistance, and leak-proof performance, contributing to a longer lifespan.
- Multiple Safety Protections: Equipped with IPX4 waterproofing and designed to withstand high temperatures and pressures. It also incorporates resistance against dry burning and leakage for enhanced safety.
Safety Information
Read all instructions thoroughly before installation and use. Failure to follow these instructions may result in property damage, personal injury, or death. Keep this manual for future reference.
- Electrical Safety: Ensure the electrical supply matches the unit's requirements (120 Volts AC, 1440 Watts). A dedicated 15 AMP circuit breaker is recommended to ensure complete electrical safety. Do not use extension cords.
- Water Pressure: The maximum water pressure for this unit is 150 PSI. Do not exceed this pressure. Install a pressure reducing valve if your household water pressure exceeds 80 PSI.
- Temperature Settings: Hot water can cause severe burns instantly. Set the temperature carefully, especially in households with children, elderly, or individuals with disabilities. Test water temperature before use.
- Installation: This appliance must be installed by a qualified professional in accordance with all local plumbing and electrical codes. Improper installation can void the warranty and create hazards.
- Maintenance: Regular maintenance, including inspection of the pressure relief valve, is essential for safe and efficient operation.
Image: Diagram illustrating the multiple safety features integrated into the water heater design, such as resistance to high temperature, dry burning, leakage, corrosion, IPX4 waterproofing, and high pressure.
Components Included
The Ranein WarmSlim 4 Gallon Electric Mini Tank Water Heater package typically includes:
- 1 x Ranein WarmSlim 4 Gallon Electric Mini Tank Water Heater unit
- Pressure Relief Valve (PRV)
- Power cord (approximately 43 inches)
- User Manual (this document)
Specifications
| Specification | Value |
|---|---|
| Brand | Ranein |
| Model | RC40G-FU02 (WarmSlim 4) |
| Capacity | 4 Gallons |
| Power Source | Electric |
| Voltage | 120 Volts |
| Wattage | 1440 Watts |
| Product Dimensions (W x H x D) | 20" x 10" x 10" |
| Item Weight | 13 pounds |
| Maximum Temperature | 167°F (75°C) |
| Minimum Temperature | 86°F (30°C) |
| Heating Efficiency | Up to 99% |
| Water Connection | 1/2" NPT |
| Maximum Water Pressure | 150 PSI |
| Recommended Circuit Breaker | 15 AMPS |
| Mounting Type | Wall-mounted or Under-sink |
| Waterproof Rating | IPX4 |
Image: An installation diagram of the Ranein water heater, displaying its dimensions (20"W x 10"H) and a table detailing its technical specifications.
Installation
Pre-Installation Checklist
- Verify that the electrical supply meets the heater's requirements (120V, 1440W).
- Ensure a dedicated 15 AMP circuit breaker is available for the unit.
- Confirm water pressure is within the acceptable range (max 150 PSI).
- Gather necessary tools: pipe wrench, Teflon tape, screwdriver, drill (if wall mounting), and appropriate fasteners.
- Choose a location that is easily accessible for maintenance and protected from freezing temperatures.
Mounting Options
The Ranein WarmSlim water heater can be installed either under a sink or wall-mounted. Ensure the chosen location can support the weight of the unit when full of water.
Under-Sink Installation
- Position the heater in the desired location under the sink, ensuring adequate clearance for plumbing connections and future maintenance.
- Secure the unit to the cabinet floor or wall using appropriate fasteners (not included) to prevent movement.
Wall-Mounted Installation
- Mark the mounting points on the wall, ensuring the unit will be level and securely supported.
- Drill pilot holes and install appropriate wall anchors (if necessary) and mounting screws, leaving them slightly extended.
- Carefully lift the water heater and hang it onto the mounting screws, then tighten the screws to secure the unit.
Plumbing Connections
- Turn off the main water supply to the installation area.
- Connect the cold water inlet (marked with a blue cap) to the cold water supply line using 1/2" NPT fittings and Teflon tape for a watertight seal.
- Connect the hot water outlet (marked with a red cap) to the hot water faucet line using 1/2" NPT fittings and Teflon tape.
- Install the pressure relief valve (PRV) into the designated port on the top of the unit. Apply Teflon tape to the threads and tighten securely.
- Route the PRV discharge pipe to an open drain, ensuring it has a continuous downward slope and is not obstructed.
Electrical Connection
- Ensure all plumbing connections are complete and checked for leaks before connecting power.
- Securely plug the water heater's power cord into a grounded 120V electrical outlet.
- Verify that the circuit breaker for this outlet is rated for 15 AMPS.
Image: A detailed view of the top of the water heater, highlighting the connections for hot water outlet, pressure relief valve, and cold water inlet, each clearly marked.
Image: The Ranein mini tank water heater neatly installed under a kitchen sink, demonstrating its compact size and how it fits into a typical under-sink cabinet space.
Operation
Initial Startup
- After all plumbing connections are complete, slowly open the cold water supply valve to the water heater.
- Open a hot water faucet in your system (e.g., kitchen sink) to allow air to escape from the tank.
- Once water flows steadily from the hot water faucet without sputtering, close the faucet. This indicates the tank is full.
- Plug in the water heater or turn on the circuit breaker to supply power to the unit.
Temperature Adjustment
The water heater features a digital display and a rotary knob for precise temperature control.
- The digital display will show the current water temperature inside the tank.
- Rotate the knob to adjust the desired temperature. The temperature can be set between 86°F (30°C) and 167°F (75°C).
- The unit will begin heating to the set temperature. The "Heating" indicator light will illuminate during this process.
- Once the set temperature is reached, the "Insulation" indicator light will illuminate, and the unit will maintain the water temperature.
Image: A detailed view of the water heater's control panel, featuring a digital screen that displays the temperature and a rotary knob for precise temperature adjustment.
Video: This video demonstrates the Ranein Mini Tank Water Heater, showcasing its design and how to adjust the temperature using the control knob.
Maintenance
Regular maintenance ensures optimal performance, energy efficiency, and extends the lifespan of your water heater. Always disconnect power before performing any maintenance.
Draining the Tank
If the unit will be unused for an extended period, or if there is a risk of freezing temperatures, it is recommended to drain the tank:
- Turn off the power supply to the water heater at the circuit breaker.
- Turn off the cold water supply valve to the heater.
- Open a hot water faucet in your system to relieve internal pressure.
- Carefully open the pressure relief valve to allow the tank to drain. Ensure the discharge pipe is directed to a suitable drain.
- Once drained, close the PRV and hot water faucet.
Cleaning
Periodically wipe down the exterior of the unit with a damp cloth. Do not use abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.
Anode Rod Inspection (if applicable)
For models equipped with an anode rod, consult a qualified technician for periodic inspection and replacement. The frequency of replacement typically ranges from every 1 to 3 years, depending on local water quality and usage.
Troubleshooting
Before contacting customer support, please refer to the following table for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water | No power to the unit; Thermostat set too low; Heating element failure; Tripped circuit breaker. | Check power supply and circuit breaker; Adjust thermostat to a higher setting; If issues persist, contact customer support. |
| Water not hot enough | Thermostat set too low; High hot water demand exceeding recovery rate; Cold water mixing with hot water. | Increase thermostat setting; Allow more time for the unit to recover between uses; Check for proper plumbing connections. |
| Water leaking from unit or connections | Loose plumbing connections; Faulty pressure relief valve; Tank leak. | Tighten all plumbing connections (use Teflon tape); Inspect and test the PRV, replace if faulty; If the tank is leaking, immediately turn off water and power and contact customer support. |
| Noisy operation (e.g., rumbling, popping) | Sediment buildup in the tank; Loose internal components. | Consult a qualified technician to flush the tank and remove sediment; Check for any loose parts if accessible, otherwise contact support. |
Warranty and Support
The Ranein WarmSlim 4 Gallon Electric Mini Tank Water Heater comes with a 3-year warranty from the date of purchase, covering defects in materials and workmanship under normal use and service.
For technical assistance, warranty claims, or any product-related inquiries, please contact our professional customer service team. Our team is dedicated to providing installation guidance and product consultation.
- Website: www.ranein.net
- Phone: (424) 452-2630
Image: A Ranein customer service representative assisting a customer, highlighting the company's commitment to support, including a professional after-sales team, installation guidance, and product consultation.
Note: While some promotional materials may indicate a 2-year warranty, the product description specifies a 3-year warranty. Please refer to your official product documentation or contact customer support for the most accurate and up-to-date warranty information.
