Hydraulic Separator - HVAC

It is like bypass when needed?

Any negatives to combining the flow/return headers with a separator? Not seen this setup specified in systems and wondered if there was a reason. (not that often I design multi zoned systems though)

What is "full load" and "partial load" stands for? Could you explain it please.

I'm doing a boiler install with radiators and snow melt.
I'm thinking of using a heat exchanger for.the snow melt do you recommend a sep 4?

This is an excellent graphic. Thank you for the upload.

А если поставить насосы  на обратку - то это позволит работать им в более щадящем режиме и  сама работа  будет более плавнее .

Good on commercial systems where zones must be pumped individually. Nice video and quiet. I like that. Decoupling hydraulics, separating air and dirt in one fixture is a good idea. 

Ever here of an ECM pump?

Nope, no voiceover, no sound: to avoid bothering.

No sound?