Pressurized Flat Panel Solar Water Heater

Product Introduction

Welcome to learn about this 300L Pressurized Flat Panel Solar Water Heater - a high-quality solar water heater specially designed for modern households and commercial establishments that value long-lasting durability and high energy efficiency. 

The most core advantage of this product lies in its outstanding corrosion resistance design. The water tank is equipped with a high-quality enamel inner liner, which is formed through a high-temperature sintering process into a smooth and dense enamel layer. This completely prevents the contact between water and the inner steel plate, eliminating the risks of corrosion and leakage at the source and ensuring clean and hygienic water quality. The service life of this product far exceeds that of ordinary stainless steel liners. The outer shell is made of high-strength color-coated sheet, with a uniform surface coating and extremely strong weather resistance. Even when exposed to harsh environments such as prolonged sunlight and rain, it does not fade or rust, achieving a perfect combination of architectural aesthetics and practical protection. 

As a pressure-type flat panel solar water heating system, this product is directly connected to the tap water, with strong and stable water pressure. It enables you to enjoy a comfortable shower. Combined with efficient flat-panel collectors, it is the preferred solar equipment for you to achieve energy conservation and environmental protection, and to enjoy a green lifestyle. 

Technical Specifications

Product Model: 300L Pressurized Flat Panel Solar Water Heater

Flat Plate Solar Collector

Enamel direct solar water heater

Enamel indirect solar water heater

Stainless steel direct solar water heater

Technical Principle

This product operates based on the thermal principle and belongs to a passive solar system. The metal heat-absorbing plates inside the flat collector are coated with selective absorption coatings, which efficiently absorb solar radiation and convert it into thermal energy. The heat is conducted to the copper tube flow channels closely connected to the heat-absorbing plates, heating the medium inside the tubes. The heated medium has a reduced density and naturally rises, flowing through the upper circulation pipe into the enamel inner tank water tank; the cooler medium then flows through the lower circulation pipe into the bottom of the collector, forming a natural circulation. This process repeats continuously, gradually heating all the water in the water tank. As a pressurized system, the water tank is directly connected to the tap water, and the water pressure is equivalent to that of the water supply network, meeting the demand for simultaneous use by multiple users. 

Factory Advantages

1. Professional manufacturing experience: We have over 15 years of experience in manufacturing solar water heaters, specializing in pressurized flat plate solar technology, with mature and stable techniques. 

2. Fully automated production line: We have introduced an automated laminating production line for flat plate collectors, an enameling inner tank sintering line, and a polyurethane foaming equipment to ensure product accuracy and consistency in quality. 

3. Strict quality control system: Implementing full-process quality management including incoming material inspection, process control, and finished product testing. Every 300L flat-panel solar water heater undergoes strict pressure testing before leaving the factory. 

4. Customization service capabilities: Support OEM/ODM customization. We can provide personalized services such as color customization for coated sheet shells and logo printing, to meet various market demands. 

Product Advantages

1. Enamel Inner Tank Water Tank: The tank is made of enamel material. Through high-temperature sintering, a smooth and dense enamel layer is formed, completely preventing water from coming into contact with the inner steel plate. It has excellent anti-corrosion and leak-proof properties, ensuring clean and hygienic water quality. 

2. Color-coated panel enclosure: The color-coated panel enclosure has uniform color and excellent weather resistance. Even when exposed to harsh conditions such as sun and rain for a long time, it will not fade or rust, and can seamlessly blend with the architectural appearance. 

3. Outstanding corrosion resistance, long service life: The inner enamel layer and the outer decorative coated plate form a dual corrosion protection system, effectively resisting corrosion and aging. The overall design service life of this product exceeds 15 years. The durability of the pressurized flat plate solar water heater far exceeds industry standards. Once invested, it brings long-term benefits. 

4. High-pressure pressure-bearing design: The pressure-bearing system is directly connected to the tap water, providing strong and stable water pressure. No booster pump is required, and it can meet the simultaneous water usage demands of multiple users. 

5. Efficient Flat Plate Collector: Equipped with black chrome/blue film coating, it has an absorption rate of up to 95%. Even on cloudy days, it can efficiently collect heat and provide stable hot water supply throughout the year. 

6. Outstanding insulation performance: 55mm polyurethane is fully foamed, with a temperature drop of less than 5℃ within 24 hours. It can continuously supply hot water at night, reducing heat loss. 

Application Scenarios

1. Residential Homes: The 300L flat-panel solar water heater can meet the daily bathing and kitchen hot water needs of a family of 6 to 10 people. 

2. Villa/Detached House: The flat collector can be integrated with the building design, and is complemented by a colored coated panel shell, presenting a beautiful and elegant appearance. 

3. Small-scale businesses: Hot water supply for places such as restaurants, barber shops, and small hotels, reducing operating costs. 

4. School/Dormitory: Centralized hot water supply system, energy-saving and environmentally friendly. 

5. Remote areas: No electricity required, continuously provides hot water, suitable for use in areas without electricity. 

Certification

Our pressure-type flat-panel solar water heaters have obtained multiple international certifications, ensuring their high quality and reliability. 

1. EU Solar Keymark Certification: Compliant with European Standards 2. CE certification: Compliant with EU safety requirements 

3. ISO 9001: International Quality Management System Certification 

4. CCC Certification: China Compulsory Product Certification 

Installation Precautions

To ensure the long-term stable operation of the 300L flat-panel solar water heater and to achieve the best energy-saving effect, please pay close attention to the following matters during installation: 

1. Installation location selection

The flat plate collector should be installed facing south or 10-15 degrees westward to ensure full exposure to sunlight. Surrounding areas should avoid being obstructed by tall buildings or trees to prevent any shadow coverage throughout the year. Pressure-type flat plate solar water heaters have high requirements for light, and proper site selection directly affects the heat collection efficiency. 

2. Roof load check

After being filled with water, the total weight of this product is approximately 400-500 kg. Before installation, it is necessary to confirm that the roof's load-bearing capacity meets the requirements. It is recommended to install it on load-bearing beams or walls. If necessary, reinforcement measures should be taken to ensure safety. The weight of the enamel inner tank water tank is relatively heavy after being filled with water, and it is strictly prohibited from being installed in non-load-bearing positions. 

3. The support is firmly fixed

The support must be securely fastened to the roof or the ground, using expansion bolts or pre-installed components. The painted steel sheet shell is aesthetically pleasing but requires a stable support structure. The wind resistance rating should be above level 8. In areas prone to typhoons, additional reinforcement is necessary. 

4. Pipeline insulation and anti-freezing

The outdoor pipelines must be covered with high-quality insulation cotton (with a recommended thickness of more than 20mm). The outer layer should be wrapped with aluminum foil or waterproof tape to prevent heat loss. In cold regions, heating tapes or anti-freezing circulation functions should be installed to prevent the pipelines from freezing and affecting the use of the solar water heater. 

5. Installation of Safety Relief Valve

Pressure-resistant solar water heaters must be equipped with a safety relief valve and connected to a drainage pipe that leads to a floor drain or an outdoor location. It is strictly prohibited to block or modify the relief valve opening privately. Ensure that the system can automatically relieve pressure when it is overpressured, protecting the safety of the enamel inner tank. 

6. Professional Installers

This product involves waterway connections, circuit wiring (such as heating tapes) and rooftop high-altitude operations. It must be installed and debugged by professionals. Non-professional installation may lead to water leakage, freezing cracks or safety accidents, affecting the service life.

Conclusion

Choosing our 300L flat-panel solar water heater is choosing an efficient, energy-saving and environmentally friendly green lifestyle. As a professional solar water heater manufacturer, we are committed to providing high-quality solar water heating solutions for global customers. The enamel inner tank ensures clean water quality, and the painted steel plate shell remains shiny over time. Contact us immediately to get a quote and enjoy the all-day comfort of hot water provided by the pressure-type flat-panel solar system!