MIZUDO 1.5 Gallon Electric Mini Tank Water Heater User Manual

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your MIZUDO 1.5 Gallon Electric Mini Tank Water Heater. Please read all instructions carefully before use and retain this manual for future reference.

The MIZUDO 1.5 Gallon Electric Mini Tank Water Heater is designed to provide hot water at a single point of use, such as under a sink in a kitchen, bathroom, or laundry area. Its compact design allows for flexible installation in various settings, including homes, RVs, and food trucks.

2. Safety Information

Important Safety Instructions:

• This appliance is CSA Certified, ensuring compliance with safety standards.
• The water heater is equipped with a high-temperature limiting device that automatically shuts off heating if the water temperature reaches 167°F (75°C) to prevent scalding.
• The temperature is adjustable within a range of 55°F to 145°F (13°C to 63°C).
• A recommended circuit breaker specification of 15 AMPS is required for complete electrical safety.
• The included Temperature and Pressure (T&P) relief valve must be installed to protect the water heater from excessive water pressure and temperature.
• Do not supply power to the water heater until it is completely filled with water. Failure to do so can damage the heating element.
• Ensure the unit is installed in a location where water frequently accumulates under the water heater for an extended period.
• Do not use the water heater if the water depth exceeds 0.8 inches (2 cm).

3. Product Features

• Rapid Heating and Recovery: The MIZUDO water heater features a 1440W heating element and an L-shaped heating rod made of 310S stainless steel, providing a larger heat exchange area for efficient and rapid temperature recovery.
• Compact and Space-Saving Design: With product dimensions of 10.1"W x 15.8"H x 10.9"D, its streamlined design allows for installation in tight spaces such as under-sink cabinets in kitchens, bathrooms, or laundry rooms.
• Durable Construction: The tank is coated with a 0.8 mm thick layer of German-made enamel, offering corrosion resistance, rust protection, and leak prevention. A built-in magnesium rod further protects the tank.
• Versatile Application: This IPX4 waterproof-tested unit is suitable for various small-scale applications, including homes, RVs, food trucks, and can be easily installed for caravan camping or picnic sinks.
• Comprehensive Safety: Includes multiple security protections such as leak-proof, splash-proof, scald-proof, corrosion-resistant, pressure-resistant, and dry-burn protection.

Image: Comparison of MIZUDO Etech-Mini Water Heater with a Traditional Mini Tank Water Heater, highlighting lower risk of leaks, good insulation, and less space occupation for the MIZUDO unit.

Image: MIZUDO mini tank water heater installed under a kitchen sink, demonstrating its compact size and under-counter placement.

Image: Diagram showing the internal heating element of the MIZUDO water heater, illustrating 1440W fast heating and rapid temperature recovery.

4. Specifications

5. Setup and Installation

The MIZUDO Electric Mini Tank Water Heater is designed for easy installation, typically floor-mounted in a discreet location such as under a sink. Ensure you have the necessary tools and follow all local plumbing and electrical codes.

5.1 Pre-Installation Steps

• Unpack the water heater and inspect for any shipping damage.
• Ensure all included accessories are present: User Manual, T&P Relief Valve, Drain Pipe, Hose Connector, and Silicone Pads.
• Select a suitable location for installation, ensuring adequate space and access for maintenance. The unit can be floor-mounted.

5.2 Plumbing Connections

1. Wrap Teflon tape around the threaded connections of the T&P relief valve at least 15 times to ensure a watertight seal.
2. Install the T&P relief valve into the designated opening on the top of the water heater. Tighten securely.
3. Attach the hose connector to the T&P relief valve.
4. Plug the drain pipe tightly onto the hose connector. The drain pipe should lead to an appropriate drainage point.
5. Connect the hot water outlet pipe (red ring) to your hot water tapping.
6. Connect the cold water inlet pipe (blue ring) to your cold water supply.

5.3 Filling the Heater

CAUTION: DO NOT supply power to the water heater until it is filled with water.

1. Open the supply valve for the water heater to allow it to fill with water.
2. Open the hot water tap(s) supplied by the water heater to purge air out of the system. Once a steady stream of water flows from the tap, indicating all air is purged, close the hot water tap.
3. Visually check all connections for any leaks. Address any leaks before proceeding.

5.4 Electrical Connection

1. Ensure the water heater is completely filled with water as described above.
2. Plug the power cord into a properly grounded 120V (AC) outlet with a dedicated 15 AMP circuit breaker.

Image: Diagram showing the product information, dimensions, and included accessories: drain pipe, pressure relief valve, silicone pads, and instruction manual.

Image: Diagram illustrating multiple connection methods for the MIZUDO water heater, showing connections to a single sink and connections to a main water heater for boosted hot water.

6. Operation

1. After successful installation and filling, ensure the unit is plugged into a suitable power outlet.
2. Turn the temperature control knob on the front of the unit to your desired setting. The temperature can be adjusted between 55°F and 145°F (13°C to 63°C).
3. The indicator light will illuminate when the unit is actively heating. It will turn off once the set temperature is reached.
4. Hot water will be available at your point of use. The 1.5-gallon capacity provides instant hot water for tasks like washing hands, dishes, or face.

Image: Infographic showing instant hot water availability for various tasks: brushing teeth, washing dishes, and washing face at optimal temperatures.

7. Maintenance

Regular maintenance helps ensure the longevity and efficient operation of your water heater.

• T&P Valve Check: Periodically check the T&P relief valve to ensure it is not obstructed and is functioning correctly. Refer to the T&P valve manufacturer's instructions for specific testing procedures.
• Drainage: If the unit is to be left unused for an extended period or in an area subject to freezing temperatures, drain the tank completely to prevent damage.
• Magnesium Rod: The built-in magnesium rod helps protect the tank from corrosion. Its lifespan depends on water quality. Consult a qualified technician for inspection and replacement if necessary.
• Cleaning: Clean the exterior of the unit with a soft, damp cloth. Do not use abrasive cleaners or solvents.

8. Troubleshooting

If you encounter issues with your MIZUDO water heater, please refer to the following common troubleshooting steps:

• No Hot Water:
  • Check if the unit is plugged in and the power outlet is active.
  • Verify the circuit breaker has not tripped.
  • Ensure the temperature setting is not set to 'OFF' or too low.
  • Confirm the water supply valve is fully open.
• Water Not Hot Enough:
  • Adjust the temperature control knob to a higher setting.
  • Allow sufficient time for the water to heat up, especially after initial fill or heavy use.
• Leaking:
  • Check all plumbing connections for tightness.
  • Inspect the T&P relief valve for proper installation and function. A small amount of discharge from the T&P valve is normal during heating cycles; however, continuous or excessive leaking may indicate an issue.
• Unusual Noises:
  • Minor noises during heating are normal. Loud or persistent noises may indicate sediment buildup. Consult a qualified technician.

For issues not resolved by these steps, please contact MIZUDO customer support.

9. Warranty and Support

MIZUDO products are designed for quality and reliability. For specific warranty details, please refer to the warranty card included with your product or visit the official MIZUDO website.

If you have any product questions, require technical assistance, or need to consult our after-sales team, please feel free to contact MIZUDO customer support. Our team is available to assist you with any inquiries.

Contact Information: (Please refer to your product packaging or the official MIZUDO website for the most current contact details.)