Hot Water Boilers
- High-quality, safe products utilizing the latest global technology.
- Comprehensive warranty and after-sales service for all products.
- Nationwide shipping across Iran and exports to neighboring countries.
- 20+ years of manufacturing expertise
- BokharSazeh Hot Water Boilers are engineered in strict compliance with the international BS 855 standard and the ISIRI 7911 national standard. Ideal for heating systems in commercial buildings, industrial factories, and swimming pool facilities. We provide nationwide delivery and export support. Contact us today for professional consultation and a detailed quotation.
What is a Hot Water Boiler?
A steel hot water boiler is a critical component of central heating systems and boiler rooms. It utilizes a burner and efficient heat exchange processes to heat water to the required temperature, which is then distributed throughout buildings or industrial facilities. These boilers are generally categorized into fire-tube and water-tube types and are compatible with standard fuels such as gas and diesel. Our engineered design, combined with the use of high-grade fire-resistant steel, ensures maximum thermal efficiency, safety, and a long service life. Selecting the appropriate capacity and operating pressure is essential for optimizing energy consumption and reducing long-term maintenance costs.
BokharSazeh Hot Water Boiler Models:
- Two-Pass Hot Water Boiler
- Three-Pass Hot Water Boiler
- Reverse Flame Hot Water Boiler
- Coal-Fired Hot Water Boiler
Technical Specifications:
- Advanced Thermal Insulation: The boiler body is insulated with 100mm thick mineral wool (density of 80 kg/m³), finished with a colored galvanized steel jacket for durability and aesthetics.
- Pressure Vessel Steel: Pressure-bearing components are constructed using high-quality fire-resistant steel (DIN 17155-17Mn4).
- High-Resistance Heat Tubes: Seamless fire-resistant tubes (DIN 17175-St35.8) certified with chemical analysis and mechanical test reports.
- Standardized Welding: All welding is performed via submerged arc welding, strictly following EN288 standards. WPS and PQR procedures are approved, and welds are rigorously controlled via UT (Ultrasonic) and VT (Visual) testing.
- Electrodes: Root passes are executed with E6010 electrodes, and completion passes with E7018.
- Quality Control & Testing: All pressure-bearing weld lines undergo non-destructive testing (RT, UT, and MT). Each boiler concludes with a hydrostatic test at 1.5 times the design pressure.
- Performance Metrics: Maximum operating temperature is 90°C (194°F), and all flanges are PN16 rated.
“Why Choose BokharSazeh Hot Water Boilers?”
“The competitive edge of BokharSazeh hot water boilers lies in our uncompromising commitment to quality control and multi-stage testing protocols. This meticulous approach to manufacturing and supervision has made BokharSazeh a trusted partner for boiler rooms, residential complexes, industrial facilities, and large-scale projects. Our boilers are engineered for durability, superior thermal efficiency, and absolute operational safety.”
Photos of manufactured hot water boilers
Unit of measurement and thermal capacity of hot water boiler
The thermal capacity of a steel hot water boiler is measured in kcal/hr (kilocalories per hour), representing the total heat output of the unit. In some technical specifications, kW/hr (kilowatts per hour) is also used to indicate the boiler’s capacity. Selecting the appropriate capacity is crucial for ensuring optimal performance and maximizing energy efficiency
Main components of the engine room hot water boiler
For safe operation and high efficiency, the hot water boiler components include:
- Boiler Shell: The main body of the unit.
- Furnace (Combustion Chamber): The primary area for fuel burning.
- Front and Rear Tube Sheets: Essential for structural integrity and tube support.
- 2-Pass and 3-Pass Fire Tubes: Engineered for optimal heat transfer.
- Front and Rear Doors: Designed for easy inspection and maintenance.
- Flue Gas Stack (Chimney) and Ladder: For safe exhaust and accessibility.
- Base Frame (Skid): Provides stability and facilitates installation.
- Water Inlet and Outlet Connections.
- Safety Valve and Control Ports: Dedicated mounting points for safety devices.
Essential Accessories for Hot Water Boilers:
- Gate Valves: For controlling water inlet and outlet flow.
- Thermostat / Aquastat: For precise temperature control.
- Safety Relief Valve: A critical component for pressure protection.
- High-Efficiency Burner.
- Thermomanometer and Control Panel (Electrical Board).
Production and assembly stages of a hot water boiler
- Design & Dimensioning: Engineering blueprints and precise structural dimensioning.
- Plate & Pipe Preparation: Cutting, rolling, and drilling of sheets and tubes to exact specifications.
- Initial Assembly & Standard Welding: Primary assembly followed by certified welding procedures.
- Tubing & Final Assembly: Precision tube installation and structural completion.
- Connection Port Fabrication: Precise machining of inlet and outlet ports.
- Finishing: Industrial coating (painting), high-quality insulation, and cladding (casing) installation.
- Accessory Installation & Commissioning Readiness: Final component integration and pre-startup checks.
Setting up a hot water boiler
Once the boiler is positioned in the boiler room, complete the necessary utility connections, including water supply, gas line for the burner, and electrical wiring for the control panel. After filling the unit with water and verifying that all connections and valves are securely tightened, proceed to ignite the burner.
Once the water reaches the desired temperature and pressure, use the installed thermostats to calibrate the settings accordingly. With the hot water supply lines open, the system is ready to distribute hot water to the required areas as needed.
Applications of Hot Water Boilers
BokharSazeh Steel Hot Water Boilers are the ideal solution for central heating systems, building climate control, as well as pool, sauna, and spa facilities. Our boilers are widely utilized in:
- Hotels & Hospitality Complexes
- Hospitals & Healthcare Facilities
- High-rise Residential Towers & Apartment Buildings
- Sports Complexes & Water Parks (Specialized Pool & Spa Heating)
- Banquet Halls & Restaurants
- Government Offices & Educational Institutions
- Military Bases & Recreational Centers
Operational Guidelines & Maintenance Best Practices
To ensure safe operation, peak performance, and an extended service life for your hot water boiler, please observe the following guidelines:
- Water Quality Control: Use low-hardness (treated) water to minimize scale buildup and mineral deposits.
- Gas Pressure Regulation: Ensure the gas pressure is strictly calibrated to the burner’s specifications.
- Certified Accessories: Only use standard, high-quality fittings and safety accessories.
- Pre-Startup Verification: Ensure the unit is completely filled with water before igniting the burner.
- Qualified Personnel Only: Operation must be managed solely by trained and authorized staff.
- Integrity of Controls: Do not modify or tamper with electrical wiring or control systems.
- Clear Circulation Path: Verify that the water circulation circuit is fully open and free of any obstructions.
- Ventilation Standards: Ensure the boiler room meets all necessary ventilation and airflow standards.
Safety Considerations and Risk Mitigation
While hot water boilers inherently present lower risks compared to high-pressure steam boilers, strict adherence to safety protocols is essential:
- Pressure Relief Valve Failure: Ensure regular inspections to prevent pressure buildup beyond the designated limits.
- Burner Safety: Minimize risks such as gas accumulation or combustion failure, which could lead to ignition issues.
- Controlled Environment: Since our hot water boilers operate in a closed-loop system at low working pressures, potential risks are minimal and easily manageable with proper maintenance.
Smart Buying Guide: Choosing the Right Hot Water Boiler
To make an informed investment and ensure long-term satisfaction, we recommend considering the following factors before purchasing:
- Expert Consultation: Consult with experienced engineers to determine the exact capacity and design required for your specific application.
- Reputable Manufacturing: Purchase exclusively from established manufacturers that adhere to recognized quality and safety standards.
- Comprehensive Documentation: Always request a formal quotation (Proforma Invoice) alongside detailed technical specifications for the unit.
- Quality of Materials: Evaluate the brand and quality of raw materials used, particularly the steel plates and boiler tubes, to ensure durability.
- Component Compatibility: Verify the quality, brand, and compatibility of all installed accessories (burners, valves, and control systems).
Hot Water Boiler Pricing
The price of a hot water boiler is determined by several key factors:
- Boiler Type: Fire-tube vs. Water-tube designs.
- Thermal Capacity: The total heating output required for your specific application.
- Manufacturer Quality & Brand: Engineering expertise, fabrication standards, and brand reputation.
- Accessories & Instrumentation: The quality and type of installed safety valves, burners, and control systems.
Investing in Value:
When purchasing a hot water boiler, prioritize long-term performance, safety, and after-sales support over the initial price tag. At BokharSazeh, we pride ourselves on delivering premium-quality equipment at competitive prices, ensuring you receive the best value for your investment.
Get a Professional Consultation:
Contact our engineering team for a free consultation. By discussing your requirements with our experts, you can receive detailed technical specifications and a formal quotation, allowing you to make an informed and confident purchasing decision.
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