MIZUDO 11kW
Manual do usuario do quentador de auga eléctrico sen tanque MIZUDO de 11 kW e 240 V
Model: 11kW
1. Introdución
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your MIZUDO 11kW 240V Electric Tankless Water Heater. Please read it thoroughly before installation and use, and keep it for future reference.

Figure 1: MIZUDO 11kW 240V Electric Tankless Water Heater
Video 1: MIZUDO Electric Tankless Water Heater Overview. This video highlights the main features and benefits of the MIZUDO tankless water heater.
2. Información importante de seguridade
Failure to follow these instructions could result in property damage, serious injury, or death. This appliance must be installed by a qualified electrician and plumber in accordance with all local and national codes.
2.1 Características de seguridade
- Certificado ETL: Asegura o cumprimento das normas de seguridade norteamericanas.
- Protección contra fugas: Designed to prevent water leaks.
- Protección contra sobretemperatura: Automatically shuts off if water temperature exceeds safe limits.
- Dry-heating Protection: Evita danos se a unidade funciona sen auga.
- Impermeable IPX4: Ofrece protección contra salpicaduras de auga.
- Scald Prevention: Helps maintain stable output temperature to prevent scalding.
- Flame-retardant Shell: Constructed with materials resistant to fire.
- Low Flow Protection: Ensures proper operation and safety under low water flow conditions.
- Voltage Protección: Safeguards against electrical voltage flutuacións.

Figure 2: ETL Certified with 6-Stage Seguridade
3. Características do produto
The MIZUDO 11kW Tankless Water Heater offers advanced technology for efficient and reliable hot water supply.
- Calefacción instantánea: Heats water in approximately 3 seconds, providing on-demand hot water.
- Alta eficiencia enerxética: Boasts 98% thermal efficiency, reducing electricity costs by up to 60% compared to traditional tank heaters.
- Caudal: Delivers up to 2.6 GPM (Gallons Per Minute), suitable for 1-2 points of use simultaneously.
- Control de temperatura estable: A smart system fine-tunes heating power 20,000 times per second to maintain temperature within ±1°F.
- Deseño compacto: Measures 14.2"H x 9.5"L x 2.8"W, saving over 50% space compared to tank-style heaters.
- Pantalla dixital LED: Allows easy temperature setting between 86°F and 140°F.

Figure 3: Key Features of the MIZUDO Tankless Water Heater

Figure 4: Internal Components and Performance

Figure 5: Stable Constant Temperature for a Comfortable Experience

Figure 6: Endless Hot Water on Demand for Multiple Uses
4. Especificacións técnicas
| Especificación | Valor |
|---|---|
| Marca | MIZUDO |
| Número de modelo | 11 kW |
| Fonte de enerxía | Hard Wiring Required |
| Dimensións do produto | 9.5" de ancho x 14.2" de alto x 2.8" de fondo |
| Cor | Branco |
| Wattage | 11 KW |
| Voltage | 240 voltios (CA) |
| Tipo de montaxe | Muro |
| Peso do elemento | 11.62 libras |
| Requisito de interruptor de circuito | 1 x 50 Amp Two-Pole Breaker |
| Wire Size Requirement | 1 x 8 AWG |
| Conexións de auga | 1/2" NPT |
| Presión de operación | Máx. 150 PSI |
| Clasificación impermeable | IPX4 |

Figure 7: Product Parameters and Installation Guide

Figure 8: North America Ground Water Temperature Map and Usage Guide
5. Guía de instalación
Proper installation is crucial for the safe and efficient operation of your MIZUDO tankless water heater. It is highly recommended that installation be performed by a qualified professional.
5.1 Lista de comprobación previa á instalación
- Ensure you have a 50 AMP two-pole breaker and 8 AWG wires.
- Verify 1/2" NPT water connections are available.
- Confirm the installation location is suitable, considering the unit's compact size (14.2"H x 9.5"L x 2.8"W).
- Turn off all power to the installation area at the main breaker panel.
5.2 Installation Steps (Refer to Video)
For a detailed visual guide, please watch the official installation video below. The video covers unboxing, mounting, water connections, and electrical connections.
Video 2: Installation of MIZUDO 11kW Electric Tankless Water Heater. This video provides a step-by-step guide for unboxing, mounting the unit, connecting water lines, and making electrical connections to ensure proper setup.
- Desembalaxe: Carefully open the package and remove the water heater and accessories.
- Montaxe: Use the provided template to mark and drill holes. Insert wall anchors and partially fasten screws. Hang the unit and secure it by tightening the screws.
- Conexións de auga: Connect the inlet and outlet water pipes (1/2" NPT) to the unit. Ensure sealing rings are properly placed and connections are tight.
- Conexións eléctricas: CAUTION: Ensure power is OFF before connecting wires. Connect the 8 AWG wires to the appropriate terminals (L1, L2, Ground) within the unit and to the 50 Amp two-pole breaker in your electrical panel.
- Water Line Air Purge: Before powering on, open a hot water faucet to purge all air from the water lines. This prevents dry-heating damage.
- Encendido: Once water lines are purged and all connections are secure, turn on the circuit breaker.
6. Funcionamento
Your MIZUDO tankless water heater features an intuitive LED digital display for easy temperature control.

Figure 9: Digital Display & Touch Control Panel
- Encendido/apagado: Press the power button (usually indicated by a circle with a vertical line) on the touch display to turn the unit on or off.
- Temperatura establecida: Use the up and down arrow buttons on the display to adjust your desired water temperature. The temperature range is typically 86°F to 140°F.
- Conversión de unidades de temperatura: If available, press the F/C button to switch between Fahrenheit and Celsius display.
- Water Flow Signal: The display may show a water flow signal when hot water is being drawn, indicating active heating.
The unit will automatically heat water to your set temperature as soon as water flow is detected.
7. Mantemento
Regular maintenance ensures the longevity and optimal performance of your tankless water heater.
- Descalcificación: Depending on your water hardness, periodic descaling (flushing with a descaling solution) may be necessary to prevent mineral buildup. Consult a professional for this service.
- Limpeza da malla do filtro: Check and clean the inlet filter screen periodically to ensure unrestricted water flow.
- Limpeza exterior: Limpe o exterior da unidade cun suave, damp pano. Non use produtos de limpeza abrasivos.
- Safety Thermal Cut-off Reset: If the unit stops working due to a safety thermal cut-off, follow the instructions below to reset it.
7.1 Safety Thermal Cut-off Reset Instructions
Warning: Please ensure to operate under power-off conditions.
- Remove the outer shell: Carefully detach the front cover of the water heater.
- Locate the safety thermal cut-off: Identify the reset button, typically a small red button, on the internal components.
- Press the reset button with a screwdriver: Gently press the button until it clicks.
- Install the outer shell: Vuelva a colocar a tapa frontal de forma segura.
To determine if the safety thermal cut-off has tripped, check if the display screen shows nothing, if the municipal power supply is normal (test other appliances), and if the circuit breaker connected to the water heater has not tripped. If these conditions are met, the product limiter may have tripped.

Figure 10: Safety Thermal Cut-off Reset Procedure
8 Solución de problemas
If you encounter issues with your MIZUDO tankless water heater, refer to the common problems and solutions below. For persistent issues, contact customer support.
| Problema | Causa posible | Solución |
|---|---|---|
| Sen auga quente / A unidade non se acende | No power, tripped circuit breaker, safety thermal cut-off tripped, no water flow. | Check power supply. Reset circuit breaker. Refer to Section 7.1 Safety Thermal Cut-off Reset Instructions. Ensure water supply is on and flowing. |
| Water not hot enough / Fluctuating temperature | Inlet water temperature too low, excessive flow rate, mineral buildup, incorrect temperature setting. | Adjust temperature setting higher. Reduce water flow at the faucet. Consider professional descaling. Refer to Figure 8 for GPM vs. inlet temperature. |
| Fuga de auga | Loose connections, damaged pipes or seals. | Turn off water supply and power immediately. Check all water connections for tightness. Inspect pipes and seals for damage. Contact a qualified plumber. |
| Código de erro na pantalla | Fallo interno ou problema do sensor. | Note the error code and consult the full user manual (if provided separately) or contact MIZUDO customer support. |
9. Garantía e soporte
MIZUDO provides long-term return & exchange services along with professional technical consulting support for your product.
For warranty claims, technical assistance, or any questions regarding your MIZUDO 11kW Electric Tankless Water Heater, please contact MIZUDO customer service through the retailer where you purchased the product or visit the official MIZUDO websitio para información de contacto.
MIZUDO Store: Visit the MIZUDO Store on Amazon
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