Kastom Solar 300Ltrs Non Pressurized Solar Water Heater – 

Kastom Solar 300Ltrs Non Pressurized Solar Water Heater is a gravity‑flow (open‑loop) system designed for areas with low or no mains water pressure. It operates entirely without electricity using the natural thermosiphon principle: cold water from a roof‑mounted header tank (or borehole storage tank) flows into the solar collectors, heats up, becomes less dense, and rises into the 300‑litre storage tank. Cooler water from the tank descends back to the collectors, creating a continuous circulation loop. Hot water is then delivered to taps, showers, or appliances by gravity only – no pump, no controller, no moving parts.

This model is ideal for off‑grid homes, rural schools, small lodges, and facilities where mains pressure is unreliable or below 0.5 bar. The large 300L capacity serves 8–9 people comfortably.

Key Features

• Gravity flow operation – No mains pressure required; works with a header tank elevated at least 1 metre above the heater.
• Non‑pressurized tank – Operates at near‑atmospheric pressure; simple, reliable, and safe.
• Collector type – Typically evacuated tubes (standard for gravity systems), though flat plate may be available on request. Evacuated tubes provide excellent insulation and work well in low sun.
• Tank construction – Inner tank: SUS304 stainless steel (food grade, 1.2mm thickness). Outer tank: UV‑stabilised steel with white or shiny metallic finish.
• Insulation – High‑density polyurethane foam (50–60mm thick, 32–40 kg/m³) – outstanding heat retention, keeps water hot for 48–72 hours.
• Zero electricity – No pump, no controller, no backup element required (though an optional 2kW AC element can be added).
• WARMA compliant – Approved for consumable borehole water in Kenya (Water Resources Authority).
• Durable mounting frame – Heavy‑duty galvanised steel (1.5mm thickness), suitable for flat or inclined roofs.
• Complete package – Includes tank, solar collectors, mounting frame, flex connectors, TP valve (temperature & pressure relief), and optional electric backup.

Technical Specifications

Best Used For

• Gravity‑fed systems – Homes, schools, clinics, lodges without mains pressure.
• Off‑grid installations – No grid electricity required.
• Borehole water – Suitable with optional corrosion protection (SUS316 tank or sacrificial anode).
• Large households – 8–9 people, or small commercial setups (e.g., staff quarters, small hotels with 2–3 rooms).
• Rural and peri‑urban areas – Where water pressure is low or intermittent.

Advantages & Benefits

1. Zero electricity cost – No pump, controller, or moving parts; operates on solar thermal alone.
2. Strong corrosion resistance – SUS304 stainless steel tank resists rust, even with borehole water.
3. Superior heat retention – Polyurethane foam keeps water hot overnight and into the next day.
4. Low maintenance – Only occasional cleaning of glass tubes and checking of connections.
5. Simple, reliable thermosiphon – No mechanical failures; lasts for decades.
6. WARMA approved – Legal and safe for borehole water consumption.
7. Large 300L capacity – Enough hot water for peak morning/evening usage.
8. 5‑year warranty – Backed by local East African support and spare parts.

Installation Requirements

• Header tank – A cold water storage tank (e.g., plastic or galvanised) must be installed at least 1 metre above the solar heater’s top connection. Typically placed on the roof or a raised platform.
• Roof structure – Must support the weight of 300L water (~300 kg) plus tank and collectors (~50–70 kg). Reinforce if necessary.
• Piping – Use standard UPVC or copper pipes sized for gravity flow (minimum ¾ inch). Insulate exposed pipes.
• Collector orientation – Facing north (in the southern hemisphere) or south (in the northern hemisphere) at an angle equal to local latitude (±10°).

Warranty & Support (Across East Africa)

• 5 years – On tank and solar collector (manufacturing defects).
• Genuine spare parts – Locally available (tubes, tanks, pipes, valves).
• Professional servicing and repair – Trained technicians.
• Expert installation support – Guidance and on‑site services.
• Countrywide delivery – Kenya, Uganda, Tanzania, Rwanda, Burundi, South Sudan.

Contact

Kreatives.co.ke
Call/WhatsApp: +254 790 108845 | +254 703 163326