Installing the JG Underfloor Manifold

JG Underfloor pre-assembled manifold, with adjustable flow meters and thermostatic actuators. Includes drain/bleed valves, auto air vent, and fixing bracket.
The JG Underfloor manifold connects and centralises underfloor (UFH) pipework in one place and distributes warm water through the pipe circuits to provide even and comfortable heat.

[@msangwan7]

If UF heating manifold is located on ground floor can I use same ground floor manifold to provide first floor underfloor heating also in 3 seperate rooms. I am worried about air being accumulated in first floor pipe loops .