Can't find UFH manifold vent/drain valve

[Cat3527]

Hi all,

I can't locate the vent/drain valve on this manifold.
My manifold resembles the "UFH Manifold RUB-RT1tm4" model on this webpage: https://www.thermo-floor.co.uk/underfloor-heating-manifolds.html

I an intending to replace on the the actuator pin-valves and I think I need to drain (or at least depressurise) the manifold to do this. I see a bleed valve on on the top left, but I think I need a valve on the bottom of the manifold to allow it to drain.

Is it possible for anyone to help me with this?

Many thanks,

 

[ShaunCorbs]

Bottom of the pump air tap / drain

Top left air tap to vent

 

[Cat3527]

Bottom of the pump air tap / drain

Top left air tap to vent

Thanks ShaunCorbs, will try that this weekend.