MIZUDO 6 Gallon Electric Mini Tank Water Heater

Introduction

This manual provides essential information for the safe installation, operation, and maintenance of your MIZUDO 6 Gallon Electric Mini Tank Water Heater, Model Etech Pro 6 Gallon. This compact, point-of-use water heater is designed to provide hot water efficiently for various applications. Please read this manual thoroughly before installation and use, and retain it for future reference.

Safety Information

Your MIZUDO water heater is UL Listed, ensuring it meets recognized safety standards. However, proper installation and adherence to safety guidelines are crucial to prevent injury or property damage.

• Always ensure the unit is properly grounded.
• A Temperature and Pressure (T&P) relief valve is included and must be installed to regulate internal pressure and temperature. Do not operate the unit without a properly installed T&P valve.
• Do not block or tamper with the T&P relief valve.
• Ensure the installation location is protected from freezing temperatures.
• This appliance is designed for indoor use only.
• For hardwired installations, it is recommended to consult a qualified electrician.
• The unit features Dry Combustion Protection, High Water Pressure Protection, Anti-Freezing Protection, and Overheat Protection.

Image: Comprehensive Safety Protection features of the MIZUDO water heater, including UL certification and various protective mechanisms.

Setup and Installation

The MIZUDO 6 Gallon Electric Mini Tank Water Heater is designed for easy installation. It can be installed as a plug-in unit or hardwired, depending on your electrical setup. The unit requires 3/4" NPT water connections and operates on 120V AC.

Installation Steps:

1. Choose Location: Select a suitable location that can accommodate the unit's dimensions (14.8" W x 20.7" H) and is close to the point of use for optimal efficiency. Ensure adequate clearance for maintenance.
2. Mounting: The unit is designed for floor mounting. Ensure the surface is level and capable of supporting the weight of the water heater when full.
3. Water Connections: Connect the cold water inlet and hot water outlet using 3/4" NPT fittings. Install the included T&P relief valve into the designated port on the top of the unit. Ensure all connections are watertight.
4. Electrical Connection:
   • Plug-in: If using the included power cord, ensure a compatible 120V outlet is available.
   • Hardwired: For hardwired installations, a 16 AWG hardwired connection is required (not included). This should be performed by a qualified professional to ensure compliance with local electrical codes.
5. Fill Tank: Before powering on, open a hot water faucet to allow air to escape and the tank to fill completely with water. Close the faucet once water flows steadily.
6. Power On: Once the tank is full, connect the power supply.

Image: Illustration of the two wiring options for the MIZUDO water heater: plug-in with an included power cord and hardwired requiring a 16 AWG connection.

Image: Product Information diagram detailing the dimensions (14.8" W x 19.09" H) and key components of the MIZUDO 6 Gallon water heater, along with included accessories.

Operating Instructions

Once installed and powered, your MIZUDO water heater is ready for use. The unit features an adjustable thermostat to set your desired water temperature.

Temperature Adjustment:

• The adjustable thermostat allows you to set the water temperature between 90°F and 150°F.
• Access the thermostat dial, typically located behind a protective cover on the front of the unit.
• Turn the dial to your desired temperature setting. Higher settings will provide hotter water but consume more energy.
• The unit is designed for rapid temperature recovery, providing hot water in approximately 50 minutes for the 6-gallon capacity.

Image: Illustration of the thermostat control panel, showing the reset button, thermostat dial pointer, and thermostat protective cover, with an adjustable temperature range of 90-150°F.

Typical Applications:

This 6-gallon unit is ideal for single-point use, providing hot water for:

• Kitchens: Washing dishes, utensils, fruits, and vegetables.
• Bathrooms: Handwashing, personal hygiene.
• RVs and Boats: Compact hot water supply.
• Garages and Workshops: Cleaning equipment, general utility.

Image: Examples of ideal single-point use for the MIZUDO water heater, including kitchen tasks, bathroom hygiene, laundry, and garage cleaning.

Maintenance

Regular maintenance ensures the longevity and efficient operation of your MIZUDO water heater.

• Anode Rod Inspection/Replacement: The built-in anode rod provides corrosion protection. Inspect it periodically (e.g., annually) and replace it when significantly depleted to extend the tank's service life.
• Drain Valve: The unit includes a drain valve for periodic flushing of sediment or for draining the tank if the unit will be unused for an extended period or in freezing conditions.
• T&P Valve: Test the T&P relief valve at least once a year by lifting the lever. Ensure water flows freely and then reseat the lever. If it does not reseat properly or leaks, replace it immediately.
• Exterior Cleaning: Clean the exterior with a damp cloth. Do not use abrasive cleaners.

The tank features a smooth enamel coating for durability and a 1.20" insulation layer to minimize heat loss and improve energy efficiency.

Image: Diagram illustrating the 360° wrapped 1.20-inch insulation layer designed to reduce energy loss and maintain water temperature.

Troubleshooting

If you experience issues with your water heater, refer to the following basic troubleshooting steps. For complex problems, contact a qualified technician or MIZUDO customer support.

• No Hot Water: Check if the unit is powered on and the circuit breaker has not tripped. Ensure the thermostat is set to a desired temperature. Verify the tank is full of water.
• Insufficient Hot Water: The 6-gallon capacity is designed for point-of-use applications. If demand exceeds capacity, consider adjusting usage patterns or the thermostat setting.
• Water Leaks: Immediately turn off the power and water supply to the unit. Check all connections for tightness. Inspect the T&P valve for proper seating or damage. Do not attempt to repair leaks yourself if unsure.
• Unusual Noises: Sediment buildup can cause rumbling noises. Draining and flushing the tank may resolve this.

Specifications

Image: Specification table for various MIZUDO water heater models, including the 6 Gallon Etech Pro, detailing capacity, dimensions, electrical requirements, and temperature range.

Warranty and Support

Your MIZUDO water heater comes with the following warranty:

• 1 Year Warranty for the Whole Unit.
• 3 Year Warranty for the Inner Tank.

For technical assistance, warranty claims, or further information, please refer to the official MIZUDO website or contact their customer support directly. Keep your purchase receipt for warranty validation.