High efficiency flat solar collector made of top quality materials starting externally with the sturdy anthracite-coloured aluminium frame treated for protection against corrosion, stone wool insulation inside that is able to keeps its insulating characteristics over time, single foil aluminium absorber that ensures high performance with its highly selective BLUETEC titanium collection surface, single harp internal copper circuitry made up of 2 horizontal distribution tubes and 10 ultrasound-welded vertical tubes. Due to its nature, the hydraulic circuitry is characterised by low pressure drop values, which allow the creation of strings of up to 8 collectors and reduce the consumption of the system circulator with subsequent energy savings.

External connections with 4 ¾’’ couplings with sealing o-rings to be created using water connection accessories:

• UNIKO-P21/KSF-P26 idra basic set needed at the end of each string and made up of 1 brass body including probe-holder fitting with seal, manual air venting and ¾’’ coupling with sealing o-ring for connection to the hot side return and 2 string closure caps;
• UNIKO-P21/KSF-P26 idra plus set needed to combine two collectors in series, comprised of 2 corrugated stainless steel expansion joints with ¾’’F swivel joint;
• H UNIKO-P21/KSF-P26 hydra plus set needed to combine two collectors in series horizontally, comprised of 1 corrugated stainless steel completely insulated section with ¾’’F swivel joints and 2 closing caps.

Cover with 3.2 mm anti-reflective glass with high mechanical strength and low iron content to ensure maximum light transmission, capable of capturing as much energy as possible as well as being treated internally to reflect the infrared rays generated by the absorber, thus retaining the heat otherwise emitted externally by the heated glass. The cover has a moulded seal made of EPDM that is resistant to UV radiation and high temperatures.

The UNIKO-P21 collector is reversible for vertical or horizontal installation thanks to the hydraulic accessories, while screw or hook mounting systems are available for a pitched roof (upon request, a raised system for all roofs with low pitches that can increase the inclination angle of the collector up to 15°) and a flat roof, and with Universal Flush Mount for all types of roofs. the UNIKO-P21 collector is light, easy to install, extremely heat efficient, and reliable over time. Ideal for large and small domestic hot water systems.