... delivery. 4>1% free spear parts. 5>setup optional Gas water heater technical specification descriptions:1> Product name: constant temp. gas ... : 6L/min, 7L/min, 8L/min, 9L/min, 10L/min.9> Suitable water pressure: 0.025 to 1.0mpa.10> Net weight ... , 8L/9.6kg, 9L/9.9kg, 10L/10.5kg.Gas water heater function descriptions:1> Zero water pressure available.2> Anti-dry-burning protection ...