I would NOT put it in the central htg system! CH boilers are expecting the low volatility of a heptane ring not the bang power of an octane one.
MJ: JetA-1 and htg paraffin come out of the refinery as DPK - dual purpose kero, as it can go to the airport or into a htg system.
Putting Avgas into a burner unit can have disasterous effects. As villagers found out when the "kero" they thought they had "liberated" from a trans-sub-Saharan pipeline was actually Avgas. Fifty eight dead and 32 rondavels razed to the ground. Nampula Province 1992/3.