Oil fired aga combined feed and vent

[exedon2]

Re-boilering large property found existing 45kw oil boiler and oil aga shares same feed tank
Aga is on a combined feed and vent
My inclination is to change it thoughts?

 

[SJB060685]

I was under the impression combined feed and vents were only acceptable on appliances with thermostatic control and latching over heat stats which a vapourising burner doesn't have
For piece of mind I would redo.

Edit: I'm going to check with an associate for you.