Fill/drain port placement

[Mercutio]

Just a quick check...

Not going to be able to move my case around as one normally would for filling/etc (remotely possible if there's no other way).

Would I be right in assuming that a pipe, routed so it goes from the highest to the lowest part of the loop would work for both? Basically have it so when I'm filling I can have the liquid source I'm filling from "higher" than any part of the system (with the cap missing from the res that's otherwise at the highest point so air can escape ofc) feeding into this pipe and fill the loop from the bottom up.
When I want to drain it, drop this pipe in a bucket so it's the lowest point and... bar a bit of liquid left in blocks/etc it should happily empty the loop?

I guess there'd be a bit of a problem with air bubbles in radiators?

Standard mavity and "water finds it's own level" ideas at work... just checking I've not missed an obvious flaw in my plan.


Crude picture to maybe explain better:

https://i.imgur.com/t5O9s9O.png

 

[Hades]

I'm a novice at this so take my advice with a pinch of salt. But personally I think you'd get a lot of trapped air in the radiators doing that, unless there is a cap you could open on the res?

 

[LuckyBenski]

You're going to want to move the loop around, full stop. The drain pipe idea is a pretty interesting one though, it keeps all the fiddling to one area. But you can fill directly into the reservoir really because there's a worst case scenario: if you get some kind of air lock and your filling pipe is full, but won't flow back into your res. In that case the res will be dry and you can't turn the pump on to move things along.

Thinking about it, if you turn the pump on while filling, it might blast water out the top of the filling tube. Maybe safer to fill the reservoir directly.

Certainly will need to move the parts around to remove air bubbles though. Or just run it with them in but that could be noisy and/or inefficient (hot).