This stainless steel water heater from SIGMAR works by recovering heat from the engine´s cooling circuit, using 220 V power from the shore or a generator.The tank and heat exchanger of the SIGMAR water heater are made from AISI 316 stainless steel.The water heaters in this range have a 50 mm thick injected polyurethane foam to reduce heat loss.They can be mounted horizontally or vertically.Several water capacities are available.The 20 L model weighs 7.8 kg and delivers 800 W of power.It is 43 cm high, 36.6 cm long and 35.8 cm high.The others are 30 L, 40 L and 60 L.The thermostat can be adjusted between 40 and 80°C.The water heater connects to 1/2´´ male BSP connectors.The brand has developed this range of water heaters specifically for pleasure boating.The brand has developed this range of water heaters specifically for pleasure boating, making them ideal for all types of craft where there is space for a water heater.