- Joined
- 17 Feb 2006
- Messages
- 373
- Reaction score
- 1
- Country
Boiler is a Vaillant Eco Tec Plus 831 Combi. Fitted about 5 years ago. Serviced by Vaillant, last time last June.
There's a filling loop which I use, and was shown how to use by the installer. Here's a few pictures:
I'm only having to top the boiler up every few months. The last Vaillant chap said not to worry about that.
This filling loop is fitted between the cold mains and the CH return. The leak is, I think coming from the actual black tap itself.
So I read the Installers Instructions:
http://www.vaillant.co.uk/stepone2/data/downloads/d7/42/00/ecoTEC_installation_and_servicing.pdf
Especially the stuff around page 31 about how my version of this boiler should have been supplied with a filling loop. Looked closer, and saw it had, just that you don't really notice looking at the boiler from the front, as it's underneath:
That's fitted between cold mains and CH Flow.
So questions:
1. Should I have been using the 'built in' filling loop to top up the boiler? The User's instructions are a bit naff, they tell you to top it up if the pressure's low, but don't say how.
2. Why have I got a second filling loop? I suppose it might be useful for flushing the system, but did it just make it easier for the engineers to install? Which is fine.
3. What do I need to replace it? Do I need something with a tap at each end of the loop? And it needs a non return valve to comply with WRAS? A Screwfix link to the right one would be handy.
4. Or as it seems superfluous, can I just take it off and solder 15mm caps on the end. I've done heaps of plumbing/CH in this house, and avoid compression joints wherever I can, especially if it's connected to the mains.
Many thanks in advance.
There's a filling loop which I use, and was shown how to use by the installer. Here's a few pictures:
I'm only having to top the boiler up every few months. The last Vaillant chap said not to worry about that.
This filling loop is fitted between the cold mains and the CH return. The leak is, I think coming from the actual black tap itself.
So I read the Installers Instructions:
http://www.vaillant.co.uk/stepone2/data/downloads/d7/42/00/ecoTEC_installation_and_servicing.pdf
Especially the stuff around page 31 about how my version of this boiler should have been supplied with a filling loop. Looked closer, and saw it had, just that you don't really notice looking at the boiler from the front, as it's underneath:
That's fitted between cold mains and CH Flow.
So questions:
1. Should I have been using the 'built in' filling loop to top up the boiler? The User's instructions are a bit naff, they tell you to top it up if the pressure's low, but don't say how.
2. Why have I got a second filling loop? I suppose it might be useful for flushing the system, but did it just make it easier for the engineers to install? Which is fine.
3. What do I need to replace it? Do I need something with a tap at each end of the loop? And it needs a non return valve to comply with WRAS? A Screwfix link to the right one would be handy.
4. Or as it seems superfluous, can I just take it off and solder 15mm caps on the end. I've done heaps of plumbing/CH in this house, and avoid compression joints wherever I can, especially if it's connected to the mains.
Many thanks in advance.