Nautic â?? therm L ( 12 liter capacity ) water temperature approx. 70°C ( at approx. 1 hour heating-up time ). 230V/500 W. Standard equipment: relieve valve up to 3 bar, water drain valve for winter cleanout and robust fastening. Measures approx. l44 x w30 x h30 cm. Weight approx. 5,5 kg. Connection: sanitary water 10mm pipe nozzle, air hose Ã? 60 - 100 mm. Type L: will be connected at the circulating air heating and the water will be heated by the implemented heat exchanger.