Posted by in Plumber Talk, on April 25, 2017

Underfloor heating explained in part two of our installation video. We show you how a manifold is installed, how the underfloor heating system works, why the screed or floor is so important and how to balance the underfloor heating system out. DIY!

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Hold tight and welcome to today’s plumberparts.co.uk video. This is the second part of a series of films that we’re doing about an underfloor heating system that we’re installing at my poor house behind us. In the first video we showed you how the Wavin Manifold works, which is the particular Manifold that we’re fitting on this job. We also showed you how we decided where we were gonna site the Manifold which was kind of a difficult one. Every job is different so we had a bit of trouble figuring out where we were gonna put it. But we figured that one out now. Then we showed you also how to instal the actual pipe work which was a stapled system, to our Celotex or our Kingspan floor insulation. After that it’s going to be a mil screed put over the top of all that, but that’ll be done later on. The next bit that I’m gonna show you is actually us piping up the manifold into the heating system and also showing you how to pipe up the individual loops that you’ve got into the manifold. So I hope you enjoy today’s video. Please follow us on Twitter and Facebook and if you need any more help, then please do let us know through those social media channels. We post loads of photos every week and loads of videos as well, stuff like that, anything you’ve got send it to us and we will send it out to the plumbing fraternity, the world. Anyway, I hope you enjoy today’s video and remember everyone, to hold tight!
So as you can see it’s not really position A when it comes to where you’d actually usually instal a Manifold but we covered that as I said in the video beforehand. So what I’ve got to do now is I’ve got my heating flow and return here. That’s my flow pipe, that’s my return pipe. They’ve gotta go into these two valves just here. So your flow will go into there and your return will go into there. Then we’ve got our two loops that need to go into our two manifolds just here. It’s very important as well, so that our flow loop goes out there and our return loop comes back up there. Because I’ve only got two loops and they’re both to the same room it’s really simple for me to find out which one is which. I mean, really, if I just blow down that one there, I can feel air come out of that one so I know that I’ve got my flow return loop there, and then obviously with a bit of detective work I know that’s the other two loops I’ve got. If you’re installing in a really, really big house, there’s different rooms and all that, you’ll have to tape up and mark out which returns and flows go to which so then you’ll know later on. Then you can actually mark the manifold accordingly at the end of the job. So what I’m gonna do, because at the moment this job is a bit of a nightmare in here really, there’s been a few different plumbers coming in over the years and do different random bits and bobs. So what I’m gonna do is I’m gonna board across the back here try and make this look as nice and as aesthetically pleasing as possible.
So hopefully once we’ve got it all piped up and done it looks a little bit like this and as you can see, we’ve made the best of a pretty bad situation. We’ve managed to get this system in, making it look nice with a lovely little bit of pullover across the back there. Gives the whole installation a nice neat appearance, and also, if you look closely, you can see that we’ve hidden most of our wires that lead to our head actuators, and to our pump and also to our two port valve. They’re all hidden away behind there, they can’t get pulled about or anything. As you can also see, we’ve got our control wiring centre in there now. So now let’s have a closer look at the system and show you how it works and also I’ll show you the screed that’s been in for about six weeks. So now that we’ve got all this installed we can have a really good look at how these systems actually work and also how the various components communicate with each other to tell the system to run or to not run. Firstly, we’ve got our flow coming in from the boiler here.

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