Heating Help

Please critique system

Hi all,
Piping Buderus gas cast iron boiler in primary/secondary. The manual gives no piping diagrams like on many other boilers. How's this look? Thanks for any feedback.
Steve

Why primary secondary?

Why not just supply and return?

r

gonna add one more zone on manifold for total of 3 and stub seprate short loop for future indirect. zones are small and just wanted to be on safe side

Buderus is fine with

lower return water temps so primary secondary is not used. The design of the return port makes primary secondary piping redundant. Save the price of the pump for the third zone and just pipe it feed and return, unless you have some really cold return temps.