Non-Pressurized

Non-Pressurized Solar Water Heater S02 Series (UNP-S02-6 to 50)

Non-pressurized vacuum tube heater, 60-500L.

Economical choice for warm climates.

Parameter Value
Models UNP-S02-6 to UNP-S02-50 (13 models)
Tank Capacity 60L / 80L / 100L / 120L / 150L / 180L / 200L / 240L / 250L / 300L / 360L / 400L / 500L
Tubes 6 / 8 / 10 / 12 / 15 / 18 / 20 / 24 / 25 / 30 / 36 / 40 / 50 tubes
Tube Spec 58/1800 Three Layers Coating
Tank Inner Diameter 360 mm
Tank Outer Diameter 450 mm
Insulation 45 mm PU Foam (31 kg/m³)
Inner Tank 304 Stainless Steel 0.4 mm
Outer Tank 201 Stainless Steel 0.31 mm
Absorber Area 0.48 to 6.59 m²
Frame U-type, 20/27°, 201 SS 1.0 mm
Working Temperature 15 to 45 degree Celsius
Loading Qty 19-116 / 40-241 / 48-286 (20GP/40GP/40HQ)

Available Customizations & Accessories

We offer flexible customization options to meet your specific project requirements.

  • OEM / Private Label available (brand, logo, packaging)
  • Custom outer tank color (RAL colors available)
  • Frame angle customization for different latitudes
  • Electric heating element (thermonate, adjustable)
  • WiFi controller with remote monitoring
  • Custom packaging and branding for export

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