As the naming says, it's a H-configuration and not a X. Hence it's constructed by use of Jumo 213 -parts and not by combining two of the V-engines!
The engine is an Arsenal 24H, something like a double-Jumo 213, if I understand correctly:
BTW: Damn it! I scrolled a listing of all French aviation engines through in the search, but was focused on the 'X' and something recalls remembrance around the '24H' in the list! Close, but no cigar :-(
Edited by Armand, 12 July 2016 - 06:03 PM.