Marine Calorifier

DRG Series Marine Electric Heating Calorifier – Ship & Offshore Platform Hot Water System

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Product Overview
The DRG Series Marine Electric Heating Calorifier is a high-efficiency marine water heating solution designed for ships and offshore platforms. This advanced hot water tank system provides reliable heated fresh water for crew accommodations, galley services, and sanitation facilities. Featuring robust construction with marine-grade materials and intelligent temperature control, our electric calorifier ensures consistent hot water supply while meeting stringent marine safety standards. Ideal for vessel operators seeking energy-efficient and low-maintenance water heating solutions.

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Key Features & Benefits
• Marine-Grade Construction – 316L stainless steel valves and CCS-B certified components
• Intelligent Temperature Control – Automatic heating between 50°C-65°C with dual WTZK-50-C controllers
• Safety Protection Systems – Float level switch prevents dry heating, safety valve prevents overpressure
• Energy Efficient Operation – Segmented heating technology reduces power consumption
• Multiple Capacity Options – 0.12 to 1.0 m³ models available for various vessel sizes
• Dual Power Compatibility – AC380V/50Hz/3φ or AC440V/60Hz/3φ operation
• Thermal Insulation – 40mm insulation layer with 0.7mm galvanized steel outer cover

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Technical Specifications

Calorifier Performance Data

Pressure & Temperature Ratings

• Working Pressure: 0.4 MPa at 60°C

• Design Pressure: 0.44 MPa

• Test Pressure: 0.66 MPa

• Safety Valve Setting: 0.42 MPa

• Working Temperature: 0-65°C

• Design Temperature: 80°C

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System Components & Materials

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Operating Principle & Control System

Automatic Temperature Management:

• Heating Activation: Automatically starts at water temperatures below 50°C

• Heating Deactivation: Automatically stops at water temperatures above 65°C

• Segmented Heating: Large-capacity models use sequential heating to reduce power load

• Safety Interlock: Float switch prevents operation when water level is low

Control Modes:

• Manual Operation: Direct control for maintenance and testing

• Automatic Operation: Intelligent temperature-based control

• Safety Overrides: Multiple protection systems ensure safe operation

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Connection Interfaces

Piping System Configuration:

• Cold Water Inlet: Connects to freshwater pressure tank (0.36-0.38 MPa)

• Hot Water Outlet: Supplies heated water to vessel distribution system

• Return Interface: Connects to hot water return for circulation heating

• Safety Valve Outlet: Discharges to bilge for overpressure protection

• Discharge Outlet: Connects to bilge for complete tank drainage

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Maintenance & Service Guide

Regular Maintenance:

• Inspect heating elements for scale buildup and clean regularly

• Verify temperature controller calibration and operation

• Check all safety devices including pressure relief valve and float switch

• Examine thermal insulation integrity and outer coating condition

Periodic Service:

• Interior tank cleaning and inspection

• Heating element resistance testing (minimum 1MΩ)

• Exterior anti-corrosion coating maintenance

• Replacement of wear parts during scheduled dry docking

Safety Precautions:

• Never obstruct safety valve inlet with tape or sealants

• Ensure capillary tubes are properly secured and protected

• Maintain minimum 50mm bending radius for capillary tubes

• Follow lockout/tagout procedures during maintenance

The description/sizes may be different with goods, please check with us when order.

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