... Solar water heater 2. SRCC, CSA, Solar Keymark, AS/NZS 2712 certified 3. Continuously improved design solar, solar water heater, solar collector, evacuated tube & heat pipe, solar ... / 80" Apricus AP range of evacuated tube solar collectors are suitable for both residential and commercial applications ... three main parts:Evacuated Tube (ET)Absorbs solar energy and converts it to usable heat. Vacuum ...