Sunpower SPT-470 Series Non-Pressure Solar Water Heater (300L)

The Sunpower SPT-470 series represents a reliable and efficient solar water heating solution for residential use. Designed with a non-pressure operating principle, this system offers a simple, durable, and cost-effective way to harness solar energy for your daily hot water needs, significantly reducing electricity consumption and environmental impact.

Key Benefits & Features

• Food-Grade Water Quality: Inner tank and water shell are welded by argon arc using 0.4mm SUS304 stainless steel (made in Korea). This ensures the water remains pure, clean, and drinkable.
• High-Efficiency Vacuum Tubes: Utilizes super hard borax and silica glass vacuum tubes with an absorption rate of ≥93% and thermal radiation rate of ≥90% (at 100°C). Tubes can reach 250°C when exposed to sun without water.
• Superior Insulation: Features a 55mm thick polyurethane foam insulation layer made with materials from Germany Bayer. This ensures excellent heat retention, keeping water hot for extended periods, especially during cloudy days or overnight.
• Durable Construction: Outer tank is made of 0.4mm color steel, and the frame is constructed from 1.5mm zinc-coated steel for excellent corrosion resistance and structural integrity, with a lifespan of up to 20 years.
• Reliable Sealing: Uses high-quality silicone rings to connect and seal the vacuum tubes, preventing leaks and ensuring long-term, maintenance-free operation.

Technical Specifications

Product Dimensions & Packaging

• Product Dimensions (L×W×H): Approx. 2750 × 1740 × 1820 mm (Estimated based on 24-tube configuration)
• Lighting Area: Approx. 4.42 m²
• Gross Weight: Approx. 134 kg
• Container Loading (20′): 58 Units

Application Scenarios

• Family Homes: Ideal for households with 5-8 members requiring consistent hot water for bathing, cleaning, and kitchen use.
• Villas & Duplexes: Provides an eco-friendly primary hot water source, reducing electricity bills significantly.
• Hostels & Small Guesthouses: Reliable and low-maintenance solution for providing hot water to guests.
• Changing Rooms & Sports Facilities: Cost-effective way to supply hot water for showers.

Key Advantages

• Energy Saving: Drastically reduces electricity or gas consumption for water heating.
• Pure Water Quality: Stainless steel inner tank ensures no rust or contamination, keeping water fresh and drinkable.
• Simple Operation: No complex controls or pumps required; operates on simple thermal dynamics.
• Low Maintenance: Durable construction with high-quality silicone rings and zinc-coated frame minimizes upkeep.
• Eco-Friendly: 100% renewable solar energy utilization reduces your carbon footprint.

Safety Notes

• Electrical Backup: If the system includes an electrical heating element for backup, please ensure the power supply is switched off before bathing to avoid electrical hazards.
• Temperature Warning: Always test water temperature before use to avoid scalding, as water can become very hot on sunny days.