DIFF Subgroup
F24H 1/101 Full Title
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters (steam boilers F22B) > Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.