Heating Help

Placement of expansion tank/feed water/air separator

I am retrofitting a Triangle Tube Solo with a Caleffi hydro separator into a an existing install.

Would it be ok to place the make up water/expansion tank/Spirovent on the out put side of the boiler on the IDHW side prior to the IDHW circulator pump? 

Physically I am not working with a lot of space and it sure would fit better...