Marine water heater manufacturer

Marine Water Heater Supplier

Certificate: CCS, GL, BV certificate, etc.
Delivery Time: 15 days
Place of Origin: China
Packing Details: Export standard packaging.

Category:

ZDR Series Marine Water Heater Supplier

Welcome to the future of marine domestic hot water systems. The ZDR Series Steam-Electric Heating Hot Water Tank is a premium, dual-power marine water heater designed to provide a continuous and reliable supply of hot water for all types of vessels and offshore platforms. Whether for crew accommodation, galley services, or sanitary facilities, this advanced hot water tank ensures operational redundancy by seamlessly integrating both electric and steam heating technologies.

Engineered to withstand the corrosive marine environment, the ZDR Series is constructed from high-grade materials and features intelligent control systems. It guarantees efficient thermal performance while fully complying with the rigorous standards set by international maritime classification societies. If you are looking for a robust, certified marine sanitation heater or a dual-purpose hot water generator, the ZDR Series is the industry-leading choice.

Key Features & Benefits

  • Dual Heating Technology: Combines electric heating elements with a steam heating coil, offering unparalleled operational flexibility and backup redundancy for critical marine operations.

  • Versatile Capacity Range: Available in sizes from 0.12 to 1.5 m³, making it suitable for a wide spectrum of vessels, from small workboats to large commercial ships.

  • Intelligent Temperature Control: Equipped with WTZK-50-C controllers for automatic temperature regulation, maintaining optimal water temperatures between 50°C and 65°C without manual intervention.

  • Comprehensive Safety Systems: Includes a pressure relief safety valve calibrated at 0.42 MPa and a dry-fire protection system (float level switch) to prevent damage to heating elements.

  • High Thermal Efficiency: Features a 40mm thick insulation layer clad in 0.7mm galvanized steel, minimizing heat loss and reducing energy consumption.

  • Global Power Compatibility: Designed for international use with support for AC380V/50Hz/3φ or AC440V/60Hz/3φ electrical systems.

  • IMO & Class Approved: Fully certified by all major classification societies, ensuring compliance with global shipping standards.

Technical Specifications

Our marine electric water heaters and steam-heated tanks are precision-engineered for performance. Below are the detailed specifications for the ZDR Series:

Model Capacity (m³) Electric Power (kW) Steam Pressure Electric Output Steam Output Steam Consumption
ZDR-0.12 0.12 6 kW 0.3 MPa 90 kg/h 275 kg/h 27.5 kg/h
ZDR-0.2 0.2 9 kW 0.3 MPa 140 kg/h 450 kg/h 45 kg/h
ZDR-0.3 0.3 12 kW 0.3 MPa 180 kg/h 750 kg/h 75 kg/h
ZDR-0.5 0.5 18 kW 0.3 MPa 280 kg/h 1200 kg/h 120 kg/h
ZDR-1.0 1.0 24 kW 0.3 MPa 360 kg/h 3250 kg/h 325 kg/h
ZDR-1.5 1.5 36 kW 0.3 MPa 540 kg/h 3259 kg/h 325 kg/h

Pressure & Temperature Ratings:

  • Working Pressure: 0.4 MPa (at 60°C)

  • Design Pressure: 0.44 MPa

  • Test Pressure: 0.68 MPa

  • Safety Valve Setting: 0.42 MPa

  • Inlet/Outlet Temperature: 15°C / 65°C

  • Design Temperature: 80°C

Operating Principle & Control System

The ZDR Series utilizes a sophisticated control logic to manage its dual heating modes, ensuring energy efficiency and constant hot water availability:

  • Electric Heating Mode: Automatically activates when the water temperature drops below 50°C and shuts down upon reaching 65°C.

  • Steam Heating Mode: A temperature regulating valve precisely controls the flow of steam through the heating coil to maintain a temperature range of 50°C-60°C.

  • Automatic Switching: The system intelligently selects the most efficient heating source based on current shipboard availability and operational requirements.

Safety & Monitoring Systems:

  • Dual WTZK-50-C Temperature Controllers: Provide redundant and precise temperature regulation to prevent overheating.

  • Float Level Switch: A critical dry-fire protection device that cuts power to the electric heaters if the water level drops too low.

  • Pressure Gauge & Thermometer: Allow for real-time monitoring of system pressure and temperature.

  • Safety Valve: Calibrated to relieve pressure at 0.42 MPa, ensuring the tank operates within safe limits.

Installation & Operation Guidelines

System Setup:

  1. Temperature Calibration: Set the regulating valve to maintain a range of 50°C to 60°C.

  2. Controller Configuration: Program the WTZK-50-C temperature controllers for a high-limit shutoff between 50°C and 65°C.

  3. Safety Valve Setting: Ensure the safety valve is calibrated to open at 0.42 MPa to prevent overpressure.

  4. Pipe Connection: Verify correct flow direction and proper installation orientation as per the manual.

Normal Operation:

  • In Electric Mode, the marine boiler replacement function ensures the tank heats automatically when idle.

  • In Steam Mode, the temperature regulating valve modulates to maintain consistent heat.

  • The system features Automatic Shutdown when preset temperature limits are reached.

Frequently Asked Questions (FAQ)

1. Why choose a combined steam and electric marine water heater over a single-source system?
A dual-purpose hot water tank, like the ZDR Series, provides critical redundancy. In the event of a boiler failure or electrical outage, the alternate heating source ensures the crew still has access to hot water for sanitation and comfort. It also offers flexibility to utilize whatever energy source is most economical or available on the vessel at any given time, enhancing overall shipboard efficiency.

2. What maintenance is required for a marine hot water tank to ensure longevity?
Regular maintenance is key. This includes inspecting and cleaning the steam regulating valve, checking capillary tubes for damage, and verifying temperature controller calibration. For the electric side, heating elements should be examined periodically for scale buildup (especially in areas with hard water) and their resistance tested (minimum 1MΩ). The sacrificial anode (if fitted) and safety valves should also be checked annually.

3. How does the dry-fire protection feature work in these marine water heaters?
The dry-fire protection system relies on a float level switch inside the tank. If the water level drops below the top of the electric heating element, the float switch sends a signal to the control panel to immediately cut power to the heating elements. This prevents the elements from overheating and burning out in seconds, which is a common failure in tanks without this safety feature.

4. Are these hot water tanks certified for international shipping?
Yes, absolutely. The ZDR Series holds comprehensive certifications from all major International Association of Classification Societies (IACS) members, including DNV GL, ABS, Lloyd’s Register (LR), Bureau Veritas (BV), and CCS. This ensures the equipment meets the strict safety and construction standards required for international voyages and simplifies the approval process during new builds or retrofits.

5. Can the ZDR Series be used for purposes other than crew accommodation hot water?
While primarily designed for domestic hot water (washing, galley, cleaning), the system’s robust construction and high output make it suitable for various marine service operations. It can provide heated water for deck washing, tank cleaning, and other sanitary purposes where a reliable supply of hot water is required on offshore platforms and vessels.

Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.

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