Explanatory notes
… coal, coke, gas, fuel oil), for heating houses, flats, factories, workshops, greenhouses, etc., by circulation of … water levels, taps, cocks, burners and similar parts or accessories. Hot water boilers, even if also capable of … or chambers ( heading 73.09 , 73.10 or 84.79 ). (c) Furnace burners ( heading 84.16 ). (d) Steam or hot water …