Those TRV packs are ok. Will do the job. You don’t want them turning down to zero as this is frost protection should temperatures really plummet. As long as the valves are bidirectional it doesn’t matter which way you have them round
Thank you for the input. Could you explain why bi directional valves make it ok to switch sides. I do believe you, I'm simply curious as to why it works.
I haven't yet fully understood how the heating system works. For example, one radiator doesn't lead on to the next because i can take off a radiator and still keep the heating system flowing.
Obviously this means there are pipes that carry the heating system past the radiators regardless of their connection but I simply haven't designed my own system and therefore cannot seem to fully imagine or understand it.
Do you have any good literature to hand?
Or know any software programmes that allow you to make such a simulation?