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400 LPD Radian Hitech Solar

40,000.00 35,000.00

Superior Efficiency: 94% sun tracking from sunrise to sunset and no heat loss in cold weather with vacuum insulation
Reliable: No scaling or corrosion due to borosilicate glass
Easy Maintenance: Easy on-site cleaning of glass and tank system
Glass materials (ETC tubes) do not carry any warranty coverage
5 year replacement warranty on tanks and stands
Extended warranty available on request

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ATTENTION: First-time Buyers for solar water heaters, Please Click here and read the solar guide before buying a solar water heater.  Or Call for a site visit before purchase for evaluating the site status which is chargeble and refunded back when placing the order.  Plumbing Cost is not included in solar water heater price 


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Product Description

400 LPD Radian Hitech Solar water heater of non-pressurized ETC systems can be used in residential and commercial installations and work well to fulfill domestic water heating, hospitals, hotels and textile, chemical plants, brewing and dairy industry requirements. The Radian line of systems is designed to work under gravity water flow and comes with an insulated water storage tank and tank/ glass tube support structures.

Technical Specifications

Technical Details Capacity Of Tanks400 LPD
TypeNon pressurized
Inner Tank Material1.2mm GI (Galvanized iron)
InsulationPUF 50mm
Outer TankPPGI (Pre painted Galvanized iron) or Stainless steel
Tank SupportsMS powder coated sheet
Tank TestingFactory pressure tested for normal systems is at 1 kg/cm²
Outer Tube Diameter58±0.5mm
Inner Tube Diameter47±0.5mm
Number Of Tubes28 No’s, 2100mm
Type Of Tube Selective CoatingGraded Al-Ni with copper under coating
Tube In Tank SealMade of silicon rubber
Other Rubber PartsEPDM
Configuration Of Glass TubesTwo concentric Boro-silicate glass tube, absorptance>93%, emittance<6%(@85°c)
Area RequiredN-S = 2 m , E-W=1 m

Evacuated Tube Collector Specifications:

Our ETC systems consist of tubes with borosilicate glass conforming to the ISO 3585 specification. The tube specifications are as follows

  • Outer Tube Diameter : 58 mm  +/-   0.7  mm
  • Inner Tube  Diameter : 47 mm  +/-   0.7  mm
  • Tube length : 1800 mm +/- 5.0 mm
  • Absorber coating        :  Outer side of inner tube coated with three target Cu/SS/AlNi selective coating by magnetron sputtering vacuum slashing process
  • Absorptance > 93%, Emittance  < 6 % (@ 85° C)


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