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- 5 Feb 2006
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Hi
Firstly thanks again for help in previous posts. This board is really great for folk like me.
Our CH system is I think a fairly standard S plan system with FE tank in the loft and HW, 2 MVs in the airing cupboard below. The FE has a 22m expansion pipe which rises up over the FE tank and a 15mm feed coming from the bottom of the tank.
Whilst clearing out the loft I noticed that the 15feed from the bottom of the FE tank went down to the loft floor and then had been cut. One part of the cut had been capped off, and the second was joined to the 22m expansion pipe. I'm guessing the reason for this was some time in the past a blockage where the original 15mm feed meets a 28mm pipe down in the airing cupboard.
Two questions arise for me:
1/ The pipe that starts in the airing cupboard from a 28mm pipe, now rises up to the top of the airing cupboard and along the loft before being capped. I've had a lot of problems with air in the system. Purging air out after draining down takes hours and even weeks later the pump doesn't run consistently quietly. Could this long, dead pipe be a cause?
2/ Is it ok to connect the 15mm feed to the 22m as described above? Perhaps I should investigate whether there really is a blockage, clear it and restore the pipework to the original (independent 15mm feed plus 22m expansion).
Thanks again in advance for any suggestions.
Firstly thanks again for help in previous posts. This board is really great for folk like me.
Our CH system is I think a fairly standard S plan system with FE tank in the loft and HW, 2 MVs in the airing cupboard below. The FE has a 22m expansion pipe which rises up over the FE tank and a 15mm feed coming from the bottom of the tank.
Whilst clearing out the loft I noticed that the 15feed from the bottom of the FE tank went down to the loft floor and then had been cut. One part of the cut had been capped off, and the second was joined to the 22m expansion pipe. I'm guessing the reason for this was some time in the past a blockage where the original 15mm feed meets a 28mm pipe down in the airing cupboard.
Two questions arise for me:
1/ The pipe that starts in the airing cupboard from a 28mm pipe, now rises up to the top of the airing cupboard and along the loft before being capped. I've had a lot of problems with air in the system. Purging air out after draining down takes hours and even weeks later the pump doesn't run consistently quietly. Could this long, dead pipe be a cause?
2/ Is it ok to connect the 15mm feed to the 22m as described above? Perhaps I should investigate whether there really is a blockage, clear it and restore the pipework to the original (independent 15mm feed plus 22m expansion).
Thanks again in advance for any suggestions.