Special heavy duty boilers. Electric with heat exchanger. Their properties are : quality of material that gives a long life and resistance. Heat exchanger of large surface to assure constant warm water. It is possible to have warm water also with an electric resistance equipped with an adjustable thermostat. High heat insulation obtained with expanded polyurethane foam with closed cells. Easy inspection through a brass flange. Protected from electrolysis with magnesium anode. Equipped with a valve to drain water from boiler when not in use. Easily wall mounted or on the floor. Outside Surface In Anodized Aluminium, Varnished In White Color. Inner Tank Surface In Porcelain Glass 1 - Cold water inlet 1/ 2” 2 - Warm water outlet 1/ 2” 3 - Water back to engine cooler line 1/ 2” 4 - Warm water from engine cooler line inlet 1/ 2”