Solar Water Heater 300 Litre

Advantages:

1. 316 stainless steel tank – superior anti-corrosion for coastal areas

2. Flat plate collector with Blue Titanium coating – high efficiency even in low light

3. Aluminum stand – lightweight, rust-proof, easy installation

4. Custom capacity 100L-300L – flexible for homes & small hotels

5. Pressurized operation – constant, comfortable water flow

Product Details

I. Product Introduction

The 300L flat plate solar water heater (Flat Plate Solar Water Heater) is specially designed for households and small commercial facilities in Central and South America, such as villas, small hotels, restaurants, clinics, and farms in countries like Brazil, Mexico, Argentina, Chile, Peru, and Colombia. The system features efficient flat plate collectors, 316 stainless steel pressure vessels, and aluminum alloy supports, offering high heat collection efficiency, strong corrosion resistance, and easy installation. The capacity can be customized from 100L to 300L as per demand, meeting the continuous water usage needs of 3 to 10 people. 

The flat plate collector is equipped with a high-strength aluminum alloy frame and low iron tempered glass. The interior features a full copper flow channel, and the surface is coated with a blue titanium selective heat absorption coating (with an absorption rate of ≥ 95% and an emissivity of ≤ 5%). Even under low light conditions, it remains highly efficient. The appearance is smooth and modern, enabling solar energy integration with buildings (BIPV/T). It has obtained international certifications such as Solar Keymark and CE. 

The inner liner of the water tank is made of 316 stainless steel, which has a stronger resistance to chloride ion corrosion compared to 304. It is particularly suitable for the long coastlines in Central and South America (such as Rio de Janeiro in Brazil, Cancun in Mexico, and Valparaiso in Chile) and areas with hard water. It is equipped with an aluminum alloy bracket, which is lightweight, does not rust, and is easy to install, significantly reducing the roof load. 



II. Technical Parameter Table

Product Model FPS-150 / FPS-200 / FPS-300

Capacity Range 100L, 150L, 200L, 300L (Customizable)

Certification Solar Keymark, CE, ISO9001 (Can assist with INMETRO/SEC certification) 

Flat Plate Solar Collector

Collector

BTE2.0-2

BTE2.5-2

Overall area (m2)

2.0

2.5

Aperture area

1.87

2.34

L x W x H (mm)

2000x1000x80

2000x1250x80

Optical performance

78%

Absorber sheet

Al, highly selective coating

Frame

Aluminium


Stainless steel direct solar water heater

Model

BTE-ET-150

BTE-ET-200

BTE-ET-300

Collector

BTE2.0-2(x1)

BTE2.5-2(x1)

BTE2.0-2(x2)

Tank(L)

150

200

300

Dimensions

Φ520*1200

Φ580*1225

Φ580*1775

Insulation

PU foam 50 mm

Working pressure

7 bar

Inner tank material

SUS 304 / SUS 316L

Outer tank material

Powder-coated steel

Auxiliary heating

1.5 KW

2.0 KW

2.0 KW

Corrosion protection

Magnesium anode

Mounting material

0°/ 25°/ 45° Galvanized sheet

 

Solar Water Heater Roof System


Enamel direct solar water heater

Model

BTE-ET-150

BTE-ET-200

BTE-ET-300

Collector

STK2.0-2(x1)

STK2.5-2(x1)

STK2.0-2(x2)

Tank(L)

150

200

300

Dimensions

Φ520*1300

Φ580*1310

Φ580*1830

Insulation

PU foam 50 mm

Working pressure

7 bar

Inner tank material

2.0mm

2.5mm enamelled

Outer tank material

Powder-coated steel

Auxiliary heating

1.5 KW

2.0 KW

2.0 KW

Corrosion protection

Magnesium anode

Mounting material

0°/ 25°/ 45° Galvanized sheet



Enamel indirect solar water heater

Model

BTE-ET-150

BTE-ET-200

BTE-ET-300

Collector

BTE2.0-2(x1)

BTE2.5-2(x1)

BTE2.0-2(x2)

Tank(L)

150

200

300

Dimensions

Φ520*1300

Φ580*1310

Φ580*1830

Insulation

PU foam 50 mm

Jacket Layer working pressure

2 bar

Working pressure

7 bar

Heat transfer medium

Glycol / water mixture

Inner tank material

2.0mm

2.5mm enamelled

Outer tank material

Powder-coated steel

Auxiliary heating

1.5 KW

2.0 KW

2.0 KW

Corrosion protection

Magnesium anode

Mounting material

0°/ 25°/ 45° Galvanized sheet



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III. Working Principle

The flat solar water heater adopts the principle of forced circulation indirect heat exchange: The flat collector absorbs sunlight, and the blue titanium film coating converts the light energy into heat energy, heating the anti-freezing medium in the heating channel; when the temperature of the collector is 5-8℃ higher than that of the water tank bottom, the intelligent controller starts the circulation pump, pumping the high-temperature medium into the built-in coil of the water tank, and transferring the heat to the domestic water. The system supports electric auxiliary heating, and automatically replenishes heat on rainy days. The 316 stainless steel water tank is directly connected to the tap water, with a pressure of 0.6 MPa, and the water pressure is constant. The aluminum alloy support is lightweight and durable, and is suitable for diverse roof structures in Central and South America (concrete flat roofs, tile roofs, metal plates, etc.). 


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IV. Product Advantages

316 Stainless Steel Water Tank, Exceptionally Strong Corrosion Resistance: The inner liner made of 316 stainless steel is resistant to chloride ion corrosion, making it particularly suitable for coastal areas in Central and South America with high salt spray conditions and hard water regions. The lifespan can exceed 15 years. 

1. Flat plate collectors, efficient and elegant: The blue titanium film coating is highly efficient in low light conditions, does not burst the pipes, is easy to maintain, and can achieve integration of solar energy with buildings, conforming to modern architectural aesthetics. 

2. Aluminum alloy support, lightweight and corrosion-resistant: The matching aluminum alloy support is non-corrosive, lightweight, easy to install, significantly reducing the roof's load-bearing capacity. It is particularly suitable for the high-humidity climate in Central and South America. 

3. Capacity: 100L - 300L, customizable as needed: Flexible customization from 100L to 300L. Multiple units can be connected in parallel for expansion, perfectly suitable for various scenarios such as households, small hotels, restaurants, etc. 

4. Intelligent control, energy-saving and hassle-free: Solar power priority, automatic switching for auxiliary heating, annual energy cost savings of 60%-80%, optional Wi-Fi remote monitoring. 

5. Constant temperature under pressure, stable and comfortable: The system can withstand a pressure of 0.6 MPa, and the water pressure is the same as that of tap water. The bathing experience is comfortable, meeting the requirements of users in Central and South America for hot water pressure. 


Solar Water Heater Roof System


V. Factory Advantages

Our company has been dedicated to the research and manufacturing of flat-panel solar water heaters for 15 years and is a professional OEM/ODM supplier targeting the markets of Central and South America. 

1. International certifications: ISO9001, Solar Keymark, CE certification. Products are exported to over 50 countries. We can assist customers in obtaining local certifications in Brazil (INMETRO - NBR 15747), Mexico (NOM), Chile (SEC), etc. We also provide technical document support. 

2. Core self-production: Fully automatic production line for flat plate collectors, 316 stainless steel water tank welding and high-pressure foaming line, with controllable quality. 

Specialties for Central and South America: Optimized for the high UV radiation in this region, the high salt fog along the coast, the hard water quality in some areas, and the voltage fluctuation of the power grid (220V/60Hz). 

3. Customization capabilities: The capacity can range from 100L to 300L, the size of the collector, and the auxiliary heating power can all be customized as per requirements. 

4. After-sales guarantee: The entire machine is covered by a 2-year warranty, and the 316 inner liner is covered by a 5-year warranty. Spanish/Portuguese manuals, installation videos, and remote guidance are provided. 


Solar Water Heater Roof System


Solar Water Heater Roof System


VI. List of Accessories

Flat plate collectors (2-4 sets, configured according to capacity), 316 stainless steel pressure vessels (customized capacity ranging from 100 to 300 liters), aluminum alloy supports (with adjustable inclination) 


BTE 7.jpg


VII. Installation Precautions

1. Orientation and Angle: In the Southern Hemisphere (Brazil, Argentina, Chile, Peru, etc.), the collector faces north; in the Northern Hemisphere (Mexico, Colombia, etc.), it faces south. The inclination angle is ±10° of the local latitude.

2. Water Tank Position: Place it in an indoor load-bearing area. A 300L water tank filled to capacity weighs approximately 350kg. Confirm the roof's load-bearing capacity.

3. Pipeline Insulation: The insulation of the circulation pipeline should be ≥ 30mm. In high-altitude or southern frost-prone areas, a supplementary heating system should be added.

4. Support Fixation: Use aluminum alloy supports to firmly connect to the roof, with a wind resistance grade of ≥ 12.

5. Water Quality Treatment: In some parts of Central and South America, the water quality is relatively hard. It is recommended to install a pre-softening device or replace the magnesium rods regularly.

6. Electrical Safety: Install an earth leakage protection switch. The controller should be compatible with the local voltage (220V/60Hz). 


VIII. Application Cases

Family villas, small hotels and guesthouses, restaurants, offices, schools, rural clinics, farms, etc. 



IX. Market Development Trends in Central and South America

1. Rapid Market Growth: The solar thermal utilization market in Central and South America is growing at an annual rate of over 10%. There is strong demand in countries such as Brazil, Mexico, Chile, and Colombia. Flat plate collectors have gained market share due to their aesthetic appeal, safety, and ease of maintenance.

2. Policy Support: The mandatory implementation of INMETRO certification in Brazil promotes the popularization of high-quality products; the green mortgage program in Mexico; the SEC energy efficiency label in Chile encourages energy-saving equipment.

3. 316 Stainless Steel Becomes the Mainstream: In coastal and high-humidity environments, the corrosion resistance of 316 stainless steel water tanks is significantly superior, and it is gradually replacing 304 as the standard for the middle and high-end market.

4. Aluminum Alloy Supports Become Popular: Lightweight and non-corrosive aluminum alloy supports have replaced traditional galvanized steel in coastal and humid areas, reducing installation difficulty and long-term maintenance costs.

5. Smart and Multi-energy Complementarity: Wi-Fi remote monitoring, solar + heat pump/electric heating combined systems have become trends, adapting to regions with unstable power supply in Central and South America.

6. Deepening Building Integration: Flat plate collectors are integrated with roofs, balconies, and sunshades to enhance architectural aesthetics and energy self-sufficiency. 

Decision Focus: 316 stainless steel for corrosion resistance (suitable for coastal and hard water areas), anti-freezing solution (for high-altitude areas in the south), controller supports 220V/60Hz and Spanish/Portuguese interfaces. It is expected to receive full process technical support from selection to commissioning, as well as successful case studies in the same climate zone.

Summary: The 300L flat plate solar water heater, with the efficient and aesthetic flat collector, the super corrosion resistance of the 316 stainless steel water tank, the lightweight and durable aluminum alloy support, and the flexible customization for 100L-300L full capacity, has become an ideal energy-saving choice for families and small commercial spaces in Central and South America. Seizing the dual opportunities of policies and the market, we sincerely invite distributors, distributors, and engineering contractors in Central and South America to join hands and cooperate! 

Contact us immediately to obtain the exclusive solutions for Central and South America, export quotations and channel cooperation policies!


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