Description
350L High Pressure Solar Water Heater Overview
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Mains Pressure Performance: Delivers hot water at full household mains pressure (0.6MPa / 6 bar) for powerful showers and efficient commercial appliance feeding .
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Substantial 350L Storage: Ideal for large families (8-10+ persons), multi-generational homes, guest houses with multiple units, staff quarters, restaurants, salons, and other commercial applications .
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Advanced Heat Pipe Technology: Utilizes copper heat pipes for rapid heat transfer, maintaining high efficiency even in cold conditions down to -35°C .
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Indirect Heating Design: Water never enters the glass tubes—only heat is transferred via copper condensers, eliminating leakage risks and ensuring long-term reliability .
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Superior Insulation: High-density polyurethane foam (50-55mm) ensures minimal overnight temperature drop, so hot water is ready whenever you need it .
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Durable Construction: Built with food-grade inner tank material and a powder-coated outer frame designed to withstand local weather conditions and provide decades of service .
350L High Pressure Solar Water Heater Technical Specifications
| Component | Specification |
|---|---|
| Tank Capacity | 350 Litres |
| System Type | Pressurized / High Pressure |
| Working Pressure | 0.6 MPa (6 bar / approx. 87 PSI) |
| Test Pressure | 1.2 MPa (12 bar) |
| Inner Tank | High-grade material with 1.2-1.5mm thickness |
| Insulation | 50-55mm High-Density Polyurethane Foam |
| Temperature Drop | ≤3°C overnight (12 hours) |
| Heat Pipe | Copper heat pipe with one-way thermal diode, operates at -35°C |
| Tube Type | Evacuated glass vacuum tubes with heat pipe, 58mm x 1800mm |
| Tube Quantity | 30-36 tubes (typical configuration) |
| Absorption Rate | >92% |
| Connections | G 3/4″ standard inlet/outlet (recommended for commercial applications) |
| Full System Weight | Approx. 150kg (dry) / 500kg (when full) |
How It Works
The 350L high pressure system delivers commercial-grade hot water through a proven, efficient process:
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Solar Collection: Evacuated glass tubes absorb solar radiation, converting sunlight into heat energy through high-efficiency selective coating .
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Heat Transfer: Inside each tube, a sealed copper heat pipe contains a special fluid that vaporizes at low temperatures. The vapor rapidly rises to the condenser tip at the top of the tube .
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Water Heating: The hot condenser tip transfers heat to the water inside the pressurized tank through a heat exchanger jacket. Water never enters the tubes themselves .
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Pressurized Delivery: Because the tank is sealed and connected to mains pressure, hot water flows forcefully to your taps, showers, and appliances on demand—no header tank or gravity feed required .
Why Choose a 350L High Pressure System?
The 350L capacity represents the highest tier of standard residential/commercial solar water heating and is specifically engineered for properties with exceptional demand:
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Large Families: 8-10+ members can shower, run kitchen tasks, and use appliances without ever exhausting hot water .
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Multi-Generational Homes: Extended families living under one roof require the substantial reserve this system provides .
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Guest Houses & Lodges: Properties with 4-6 guest rooms plus owner accommodation maintain consistent hot water availability for all occupants .
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Commercial Kitchens: Restaurants and catering businesses require reliable hot water for dishwashing, cleaning, and food preparation throughout operating hours .
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Salons & Spas: High hot water consumption for washing, treatments, and client comfort demands a system that can keep up .
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Staff Quarters: Properties with dedicated staff accommodation can serve both main house and quarters from a single system .
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Large Bathtubs & Jacuzzis: If your property features a large soaking tub, jacuzzi, or multiple bathtubs, the 350L capacity ensures enough hot water for luxurious bathing without leaving others cold .
Local Installation Considerations
For large properties and businesses in our service area, proper installation is critical to ensure your 350L system delivers maximum performance throughout the year. Key considerations include:
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Roof Orientation: Panels should face true north (in the Southern Hemisphere) for optimal year-round sun exposure. Our installers use compass alignment rather than assuming roof square .
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Structural Requirements: A full 350L system weighs approximately 500kg—half a ton. Your roof structure must be professionally assessed by a structural engineer if there is any doubt about load-bearing capacity. Ground mounting on a reinforced concrete base is often the preferred solution for properties with unsuitable or complex roofs .
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Plumbing Infrastructure: Commercial and large residential applications typically require 3/4″ piping to handle the increased flow capacity. Our team will assess your existing pipework and recommend upgrades where necessary .
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Water Quality & Treatment: For properties in areas with hard water, we strongly recommend commercial-grade scale inhibition systems to protect the heat exchanger and maintain efficiency over the system’s lifespan .
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Electrical Backup Configuration: For commercial applications requiring guaranteed hot water 24/7, we can configure the system with appropriately sized electrical backup elements and timers to suit your operational hours .
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Installation Timeline: A 350L system installation typically requires a full day (6-8 hours). Our experienced team handles all lifting equipment, plumbing modifications, and electrical connections .
Installation Summary
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Site Assessment: Professional evaluation of roof structure, orientation, and existing plumbing .
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Mounting: Securely fix the heavy-duty frame on a north-facing roof or ground stand. For roof installations, flashing and waterproofing are installed to prevent leaks .
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Tank Placement: Position the tank level on the frame using appropriate lifting equipment. The tank must be perfectly level for proper operation .
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Tube Installation: Insert heat pipe tubes gently into tank ports with a twisting motion. Secure bottoms in the frame holder .
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Plumbing: Connect to mains cold water supply. Install pressure relief valve, temperature relief valve, and expansion tank as mandatory safety components .
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Final Check: Fill system before sun exposure to prevent tube damage. Pressure test all connections and check for leaks .
350L High Pressure Solar Water Heater Maintenance
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Clean glass tubes every 6 months for commercial applications, annually for residential use .
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Test pressure relief valve operation every 6 months (discharge water will be extremely hot—exercise caution) .
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Inspect tubes monthly for condensation inside glass (indicates broken vacuum requiring replacement) .
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Check system pressure gauge weekly for commercial installations .
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For properties with hard water, schedule professional descaling every 2 years to maintain heat transfer efficiency .
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Annual professional inspection recommended for commercial systems .
350L High Pressure Solar Water Heater Applications
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Large residential homes (8-10+ persons)
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Multi-generational family compounds
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Guest houses and lodges (4-6 rooms)
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Restaurants and commercial kitchens
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Salons and spas
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Staff quarters and domestic worker accommodation
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Small hotels and B&Bs
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Community centers and religious facilities
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Agricultural operations requiring hot water
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Light industrial applications
Contact Us
Ready to eliminate electricity bills and enjoy commercial-grade solar hot water for your large property or business? Contact our team today for expert advice, a free site assessment, or to schedule your installation.
📞 Call / WhatsApp: 0794485343
📧 Email: info@globussolar.com
🌐 Web: www.globussolar.com







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