... day, the water in the tank is gradually heated.Solar Collector Technical Specification: Manifold Casing Material: AluminumFrame Material ... Silicon Rubber Test Pressure: 10 bar Collector Mounting Flat Roof/Inclined Roof Mounting Angle: 15-50C Model ... *355*275CertificateEN12975-SOLAR KEYMARK,SRCC,EN12975-SOLAR KEYMARK,SRCC,EN12975-SOLAR KEYMARK,SRCC,EN12975-SOLAR KEYMARK,SRCC,EN12975-SOLAR KEYMARK,SRCC, ...