The solar radiation is absorbed by Flat Plate Collectors which consist of an insulated outer metallic box covered on the top with glass sheet. Inside there are blackened metallic absorber (selectively coated) sheets with built in channels or riser tubes to carry water. The absorber absorbs the solar radiation and transfers the heat to the
flowing water.

  • Suitable for domestic(Home)applications.
  • Boiler Grade Galvanized/Stainless Steel with enamel Coated Inner Tank.
  • Superior Quality PUF Insulation.
  • Pure Polyester Powder Coated Galvanized Outer Cladding.
  • BIS Marked Copper to Copper Absorber.
  • NALSUN-Selective Coated Copper Fins for Higher Efficiency.
  • Weather Proof Collector Box.
  • Pure Polyester Powder Coated Stands & Support with White, Orange & Green Combination.
  • 4mm Toughened and Tempered Glass Glazing.
  • Indirect heating- Heat Exchanger type and Pressurized.
  • Application systems are also available.

Specification- FPC Hot Water Storage Tank

Description Specification
Material Boiler Grade Galvanized/Stainless Steel.
Type Cylindrical – horizontally assembled.
Insulation PUF 40-50mm.
Outer Cladding Pre coated galvanized Steel/Aluminum.
Outer Finishing Pure Polyester Powder Coating finish.
Outer Finish Color White Green & Orange Combination.
Back up Heater 2 KW With thermostat control 230V AC.
Tank Supports All Die Cut Fabricated Galvanized steel.
Tank Testing Factory pressure tested for normal systems is at 1 Kg/cm².
Normal Working pressure of the system Less than 0.3 Kg/cm²
Interconnection Tank and Collector EPDM Pipe

FPC – Collector Technical Specification

Description Specification
Type Copper, selectively coated with “NALSUN” Black Chrome coating
Size 2030mm L x 1030mm W x 95mm H
Absorber Material Copper – Copper absorber
No. of Fins 9 No’s per collector
Header Tubes Copper, Ø25 mm, 22 SWG
Riser Tubes Copper, Ø12.5 mm, 24 SWG
Header Protective coating Polyurethane based coating
Riser to Fin Joining Ultra Sonic Metal welding
Collector Box Aluminum
Glass retaining angle / Aluminum 25mm Pure Polyester Powder coated – Black
Collector back sheet Aluminum Screwed to the frame
Back, Corner Sealing Non Acidic Silicon sealant through corners and screw joint
Top Cover/Glazing Toughened glass, 4mm thick
Glass Beading High quality EPDM Rubber – Single Piece
Absorber Flanges 4 mm Thick Machined brass flanges, 63 mm dia, 4 bolt holes
Gaskets and Grommets High quality EPDM special shaped full Gaskets and Grommets
Insulation Bottom Rock wool, 50 mm 48 kg/m³ density
Insulation Side Rock wool, 25 mm 48 Kg/m³ density
Reflective foil Aluminum 50 microns thick for bottom and 0.45 mm for sides
Collector Supports Fabricated and Duly powder coated Mild Steel Sections