The heat exchanger is suitable for air heaters AUTOTERM Air 9D with starting serial numbers:
AUTOTERM Air 9D 12V version 47960000363 and higher/newer
AUTOTERM Air 9D 24V version 47910000701 and higher/newer
If this heat exchanger is used as a replacement instead of an old type heat exchanger EU/3684, it is mandatory to replace also an adapter to EU/P5705 alongside with combustion chamber gaskets EU/P5703 & adapter gasket EU/P5704.
