VETUS WHD 31L Water Heater Gray-black

Whilst conventional calorifiers use a spiral tube to heat the water, these calorifiers use a very efficient double wall principle. Thanks to this double wall principle, the VETUS double wall calorifiers have a heating surface, which is much greater than that of a conventional heating spiral tube. This means that the double walled calorifiers will heat the water significant faster than conventional calorifiers. Specifications: - Inner tank: Duplex stainless steel - Outer tank: stainless steel AISI 304 - Insulation: Polyester foam with S/S jacket - Connection engine coolant: G 1/2 - Connection fresh water: G 1/2 - Connection heating element: G 1/2 - Setting of relief valve fresh water: 6 bar (87 lbs / sq.inch) - Contents of fresh water (litres): 31 - Contents of coolant (litres): 3