Pipes left from cylinder removal

[T.iveson]

So I’ve had my hot water cylinder removed as I’ve changed over to combi and this has opened up a lot of space which I can make part of the bathroom. But I need to hide these pipes shown in the picture. Are they important? Could I just hind them under the floor. Or do they need to be accessible. I see you release air from them. I’m not a plumber and I will get one to do this. I just want to know if it’s doable and is it a big job. Thanks in advance

 

[Gasmk1]

they can go under floor but require a lot of work i would say not a diy as you need to drain sustem cut boards trace pipes reconnect flow to flow and return to return, refill system and check operation

 

[centralheatking]

When we used to fit combis ..it was a great after sales pitch to suggest that those pipes you show could be made to supply a separate shower cubicle with little extra work on our behalf. So think on
We did loads thus way. centralheatking

 

[moonlight]

Looks like they are the flow and return of your heating circuit, easily go under the floor. They only have vents on them because the extend so high out of the floor and would create air locks otherwise.

 

[T.iveson]

Yes it is the flow and return.I can actually access these pipes without taking the floor up as the garage is below so that’s handy. So basically I can cut them back, remove air valves and loop them back up under floor. Il get a plumber to do it. I just like to know what needs doing so he doesn’t try and fleece me. Thanks
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Also solder or push fit? Thanks

 

[ShaunCorbs]

solder as its under the floor