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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Can anybody recognise this plumbing item. I think it may be a de-aerator
I have this item in my central heating system and want to confirm what
it does. is it a de-aerator? Does anybody recognise the manufacturer and which is the inlet/outlet port, upper or lower. http://www.tecno.demon.co.uk/_photo/plumbing_item.jpg |
#2
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Sun, 02 Apr 2006 19:23:08 +0100, Tim
wrote: I have this item in my central heating system and want to confirm what it does. is it a de-aerator? Does anybody recognise the manufacturer and which is the inlet/outlet port, upper or lower. http://www.tecno.demon.co.uk/_photo/plumbing_item.jpg Yes that's exactly what it is. I'm not sure who the manufacturer of this one is, but the concept is the same as the Myson Aerjec. Look at www.bes.ltd.uk part number 11334 On yours, the feed expansion pipe would connect at the left (15mm pipe) and the vent goes where you have marked it. The purpose is to get the FE and vent pipes close together; then the other 22mm pipes are on the main circuit. The water swirls in the cylindrical pot and even fairly fine air bubbles will tend to rise up and out at the vent. -- ..andy |
#3
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Sun, 02 Apr 2006 19:23:08 +0100, Tim
wrote: I have this item in my central heating system and want to confirm what it does. is it a de-aerator? It is a de-aerator for a vented home central heating system.. I had an identical one. There were others. Does anybody recognise the manufacturer It was bought unboxed from a builders merchant. Maybe 25 years ago.The manufacturer was not indicated. and which is the inlet/outlet port, upper or lower. I'd guess in at the top, out at the bottom so that the flow from the inlet doesn't sweep the bubbles up and around the outlet such that some go with the flow. Probably doesn't make a lot of difference unless air is continually entering the system which cannot be tolerated anyway. They seem to have been de-emphasised now with the advance of sealed systems and a better understanding of pumping -over. DG |
#4
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Can anybody recognise this plumbing item. I think it may be a de-aerator
They seem to have been de-emphasised now with the advance of sealed
systems and a better understanding of pumping -over. Thanks Andy & Derek. Curiously the heating installation had this deaerator and a couple of those ball float designs, which seemed a bit redundant to me. Derek, I am curious of your remark about the 'better understanding of pumping'. Could you clarify this or point me to a URL please? Best Tim |
#5
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Sun, 02 Apr 2006 22:55:32 +0100, Tim
wrote: They seem to have been de-emphasised now with the advance of sealed systems and a better understanding of pumping -over. Thanks Andy & Derek. Curiously the heating installation had this deaerator and a couple of those ball float designs, which seemed a bit redundant to me. Derek, I am curious of your remark about the 'better understanding of pumping'. Could you clarify this or point me to a URL please? I also had the Myson one that Andy mentioned. That one was new and boxed and came with an propaganda leaflet that illustrated all the myriad possible "wrong" ways of setting up the feed and expansion, flow and return piping, and the siting of the pump in order to avoid such nasties as "pumping - over" or negative pressure in parts of the system. The leaflet implied the one sure fire way of avoiding all the problems was by using a Myson Aerjec. Apparently this was an issue of concern at the time, this was 25 years ago. Since one encounters these things so infrequently and most new build houses since then have been built with wet c/h without a proprietory de-aerator, I presume that eventually the optimum set up became the norm. I could find no mention of de-aerators on the Myson site and their piping layout diagrams don't include them. DG |
#6
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Mon, 03 Apr 2006 09:27:44 +0100, Derek Geldard
wrote: On Sun, 02 Apr 2006 22:55:32 +0100, Tim wrote: They seem to have been de-emphasised now with the advance of sealed systems and a better understanding of pumping -over. Thanks Andy & Derek. Curiously the heating installation had this deaerator and a couple of those ball float designs, which seemed a bit redundant to me. Derek, I am curious of your remark about the 'better understanding of pumping'. Could you clarify this or point me to a URL please? I also had the Myson one that Andy mentioned. That one was new and boxed and came with an propaganda leaflet that illustrated all the myriad possible "wrong" ways of setting up the feed and expansion, flow and return piping, and the siting of the pump in order to avoid such nasties as "pumping - over" or negative pressure in parts of the system. The leaflet implied the one sure fire way of avoiding all the problems was by using a Myson Aerjec. Apparently this was an issue of concern at the time, this was 25 years ago. Since one encounters these things so infrequently and most new build houses since then have been built with wet c/h without a proprietory de-aerator, I presume that eventually the optimum set up became the norm. I could find no mention of de-aerators on the Myson site and their piping layout diagrams don't include them. DG Yes, in terms of avoiding sucking down or pumping over, positioning the vent pipe and FE pipe within 150mm of one another on the circuit avoids the problem. However, some people managed and still do manage to put one on each side of the boiler (wrong because of boiler flow resistance) or worse still on either side of the pump. Air separators effectively force the plumbing to be done correctly. The second aspect is that the design of the pot swirls the water and helps get the air out after initial filling. I fitted one on a system a few years ago that had has the FE and vent pipes simply connected to the circuit within 150mm and it did make an improvement, although not a vast one. Better yet is to convert the system to sealed operation if the boiler is OK for that. -- ..andy |
#7
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Can anybody recognise this plumbing item. I think it may be a de-aerator
In uk.d-i-y, Derek Geldard wrote:
On Sun, 02 Apr 2006 22:55:32 +0100, Tim wrote: They seem to have been de-emphasised now with the advance of sealed systems and a better understanding of pumping -over. Thanks Andy & Derek. Curiously the heating installation had this deaerator and a couple of those ball float designs, which seemed a bit redundant to me. Derek, I am curious of your remark about the 'better understanding of pumping'. Could you clarify this or point me to a URL please? I also had the Myson one that Andy mentioned. That one was new and boxed and came with an propaganda leaflet that illustrated all the myriad possible "wrong" ways of setting up the feed and expansion, flow and return piping, and the siting of the pump in order to avoid such nasties as "pumping - over" or negative pressure in parts of the system. The leaflet implied the one sure fire way of avoiding all the problems was by using a Myson Aerjec. Apparently this was an issue of concern at the time, this was 25 years ago. Since one encounters these things so infrequently and most new build houses since then have been built with wet c/h without a proprietory de-aerator, I presume that eventually the optimum set up became the norm. We had one fitted here, in about 1997. We were having a new boiler installed in a different room and going from a gravity-fed-hot-water system to a fully pumped system. Pipe-routing and space considerations meant that the layout was not what the plumber would consider ideal, and the pump had to be located upstairs in the airing cupboard rather than down by the boiler. The plumber expressed reservations about all this, muttering something about air bubbles, and recommended a de-aerator. This could all be complete ******** of course, but it made some kind of sense to me in that a pump operating in "pull" mode instead of "push" mode might cause air induction or make air come out of solution. Anyway it's no trouble, and I don't imagine it cost very much. The boiler has always made quite a lot of air-bubbling noises, though. -- Mike Barnes |
#8
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Can anybody recognise this plumbing item. I think it may be a de-aerator
Better yet is to convert the system to sealed operation if the boiler
is OK for that. I am not sure if I am up to that task just yet! I found the manufacture of the device. It's a Tower Airjet Air Seperator and there's a PDF app note with its manufacturer detail he http://www.tfc-group.co.uk/~sa_webapp/run.asp?page=200 |
#9
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Derek ^" wrote in message ... On Sun, 02 Apr 2006 19:23:08 +0100, Tim wrote: I have this item in my central heating system and want to confirm what it does. is it a de-aerator? It is a de-aerator for a vented home central heating system.. I had an identical one. There were others. Does anybody recognise the manufacturer It was bought unboxed from a builders merchant. Maybe 25 years ago.The manufacturer was not indicated. and which is the inlet/outlet port, upper or lower. I'd guess in at the top, out at the bottom so that the flow from the inlet doesn't sweep the bubbles up and around the outlet such that some go with the flow. Probably doesn't make a lot of difference unless air is continually entering the system which cannot be tolerated anyway. They seem to have been de-emphasised now with the advance of sealed systems and a better understanding of pumping -over. Nope. They were not liked as they could accumulate sludge and block up. Also, many did not understand how they worked which was the main problem. This 3 port type, as opposed to the 4 port type, is used a lot with combined vent and feed pipe systems (one 22mm pipe into the bottom of the F&E tank and no vent pipe over the top). On boilers capable of being sealed systems, combined feed and vent pipes can be used and I prefer them to two-pipe feed and vent (no pump over or air being sucked in. Some boilers makers, such as Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. |
#10
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Can anybody recognise this plumbing item. I think it may be ade-aerator
Doctor Drivel wrote:
"Derek ^" wrote... Tim wrote: I have this item in my central heating system and want to confirm what it does. is it a de-aerator? It is a de-aerator for a vented home central heating system.. they could accumulate sludge and block up. They do that. I have had to remove a blockage in the top pipe of one of these with a drill, it was totally blocked. Cut pipe, drill out blockage, recouple. PITA. |
#11
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Chris Bacon" wrote in message ... Doctor Drivel wrote: "Derek ^" wrote... Tim wrote: I have this item in my central heating system and want to confirm what it does. is it a de-aerator? It is a de-aerator for a vented home central heating system.. they could accumulate sludge and block up. They do that. I have had to remove a blockage in the top pipe of one of these with a drill, it was totally blocked. Cut pipe, drill out blockage, recouple. PITA. Best to have the 4 port with the pipe out of the bottom. extend the bottom and have removable cap to clear out sludge and debris. Solids will drop to the bottom. |
#12
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Mon, 3 Apr 2006 14:59:13 +0100, "Doctor Drivel"
wrote: "Derek ^" wrote in message They seem to have been de-emphasised now with the advance of sealed systems and a better understanding of pumping -over. Nope. They were not liked as they could accumulate sludge and block up. Also, many did not understand how they worked which was the main problem. This 3 port type, as opposed to the 4 port type, is used a lot with combined vent and feed pipe systems (one 22mm pipe into the bottom of the F&E tank and no vent pipe over the top). On boilers capable of being sealed systems, combined feed and vent pipes can be used and I prefer them to two-pipe feed and vent (no pump over or air being sucked in. Some boilers makers, such as Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. -- ..andy |
#13
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Tue, 4 Apr 2006 10:19:03 +0100, "Doctor Drivel"
wrote: Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. If a system is badly sludged, then just using desludger is not good enough anyway. It needs to be powerflushed or some equivalent to that. When a boiler is changed, it should be done using the Benchmark procedures and these include filling with inhibitor. I do not believe that that only amounts to 5% of installations. 3/10. Must try harder. -- ..andy |
#14
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Andy Hall" aka Matt wrote in message ... On Tue, 4 Apr 2006 10:19:03 +0100, "Doctor Drivel" wrote: Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? ** snip appalling Mattness ** |
#15
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Tue, 4 Apr 2006 21:48:49 +0100, "Doctor Drivel"
wrote: "Andy Hall" aka Matt wrote in message .. . On Tue, 4 Apr 2006 10:19:03 +0100, "Doctor Drivel" wrote: Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? I don't buy that either. You are pulling numbers from parts of your anatomy from whence the sun don't shine.... -- ..andy |
#16
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Andy Hall" aka Matt wrote in message news On Tue, 4 Apr 2006 21:48:49 +0100, "Doctor Drivel" wrote: "Andy Hall" aka Matt wrote in message . .. On Tue, 4 Apr 2006 10:19:03 +0100, "Doctor Drivel" wrote: Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? I don't buy that either. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? |
#17
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Wed, 5 Apr 2006 00:45:30 +0100, "Doctor Drivel"
wrote: "Andy Hall" aka Matt wrote in message news On Tue, 4 Apr 2006 21:48:49 +0100, "Doctor Drivel" wrote: "Andy Hall" aka Matt wrote in message ... On Tue, 4 Apr 2006 10:19:03 +0100, "Doctor Drivel" wrote: Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? I don't buy that either. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? Do you really think, in your wildest dreams that if somebody isn't going to be bothered to have their system correctly dosed with inhibitor that they will bother with one of these or that the type of fitter that they are likely to employ will bother either? You're going to have to try a lot harder to win that promotional flight of ducks set for your living room wall. Don't forget that it's a new month now and time for a new boiler of the month... -- ..andy |
#18
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Andy Hall" aka Matt wrote in message ... On Wed, 5 Apr 2006 00:45:30 +0100, "Doctor Drivel" wrote: "Andy Hall" aka Matt wrote in message news On Tue, 4 Apr 2006 21:48:49 +0100, "Doctor Drivel" wrote: "Andy Hall" aka Matt wrote in message m... On Tue, 4 Apr 2006 10:19:03 +0100, "Doctor Drivel" wrote: Baxi and Potterton, stipulate that these air ejectors should be on the combined feed and vent pipe to expel air. They work very well. With combined feed and vent a very low head can be obtained, so ideal for loft fitting of boilers. To alleviate fears of sludge accumulating in the air ejectors it is best to fit a Maganclean on the boiler return pipe, which grabs magnetite that causes sludge. The Magnaclean protects the whole system too. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? I don't buy that either. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? Do you really think, in your wildest dreams that if somebody isn't going to be bothered to have their system correctly dosed with inhibitor that they will bother with one of these or that the type of fitter that they are likely to employ will bother either? Matt, most people don't know that you need to redose, hence descaling and powerflushing is big business. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? |
#19
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Wed, 5 Apr 2006 13:18:33 +0100, "Doctor Drivel"
wrote: "Andy Hall" aka Matt wrote in message .. There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? I don't buy that either. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? Do you really think, in your wildest dreams that if somebody isn't going to be bothered to have their system correctly dosed with inhibitor that they will bother with one of these or that the type of fitter that they are likely to employ will bother either? Matt, most people don't know that you need to redose, hence descaling and powerflushing is big business. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? No and neither have you. -- ..andy |
#20
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Andy Hall" aka Matt wrote in message ... On Wed, 5 Apr 2006 13:18:33 +0100, "Doctor Drivel" wrote: "Andy Hall" aka Matt wrote in message . There is no reason that this problem should happen or one of these devices needed as long as the system is correctly dosed with inhibitor. It is dealing with the problem in the wrong way. Matt, on a boiler change a Maganclean I would say is essential as desludger never gets it all out. If the system is not re-dosed, and 95% are not , then the Magnaclean prevents blockages. Got it? This is bull****. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages. Got it? I don't buy that either. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? Do you really think, in your wildest dreams that if somebody isn't going to be bothered to have their system correctly dosed with inhibitor that they will bother with one of these or that the type of fitter that they are likely to employ will bother either? Matt, most people don't know that you need to redose, hence descaling and powerflushing is big business. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? No and neither have you. Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? |
#21
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Can anybody recognise this plumbing item. I think it may be a de-aerator
Matt, again..."If the system is not re-dosed, and 95% are not, then the
Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. Christian. |
#22
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How any service engineers replace inhibitor? How many bother to check if it has been replaced? |
#23
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How any service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I think many would agree in principle that inhibitor is often overlooked, nevertheless inhibitor is only lost through leaks or work which required draining where it wasn't replaced through negligence. I cannot believe that only 5% of systems have sufficient inhibitor to prevent corrosion. |
#24
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Fred" wrote in message ... "Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How many service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I haven't quoted ant stats. I think many would agree in principle that inhibitor is often overlooked, nevertheless inhibitor is only lost through leaks or work which required draining where it wasn't replaced through negligence. I cannot believe that only 5% of systems have sufficient inhibitor to prevent corrosion. As you seen to think inhibitor has an amazing life expectancy, can you put a time of its usefulness before it requires replacing? 10 years, 20 years, 30 years? And will you back this up please. |
#25
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Thu, 6 Apr 2006 18:00:04 +0100, "Doctor Drivel"
wrote: "Fred" wrote in message ... "Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How many service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I haven't quoted ant stats. Yes you have. You said that 95% are not. Where is your source for this statistic? -- ..andy |
#26
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Thu, 06 Apr 2006 16:07:20 +0100, Fred wrote:
"Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How any service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I think many would agree in principle that inhibitor is often overlooked, nevertheless inhibitor is only lost through leaks or work which required draining where it wasn't replaced through negligence. I cannot believe that only 5% of systems have sufficient inhibitor to prevent corrosion. IME probably 20% have inhibitor (i.e I can detect it by the look and smell when I drain down). I'd about 10-20% of systems have dire faults and serious corrosion, usually brought about by wrong pipework or a failed expansion vessel. That leaves a large number which have neither faults nor inhibitor, generally these don't seem to come to a lot of harm unless electrolytic corrosion begins. -- Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at http://www.diyfaq.org.uk Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html |
#27
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Andy Hall" wrote in message ... On Thu, 6 Apr 2006 18:00:04 +0100, "Doctor Drivel" wrote: "Fred" wrote in message .. . "Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How many service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I haven't quoted ant stats. Yes you have. You said that 95% are not. Where is your source for this statistic? Me. I know these things. |
#28
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Can anybody recognise this plumbing item. I think it may be a de-aerator
On Thu, 6 Apr 2006 20:47:31 +0100, "Doctor Drivel"
wrote: I haven't quoted ant stats. Yes you have. You said that 95% are not. Where is your source for this statistic? Me. I know these things. Oh I see. I think you are confusing knowing and being known. It's a similar concept to "some men are discovered, others are found out". You might be confusing all of this with the conversation that you had with Frau Farbissina. Next time the magnawotsit rep comes in tell him that you're going to place him in an easily escapable situation involving an overly elaborate and exotic death. See whether he's willing to swap the Crackerjack pencil that he's currently offering for a puffy anorak. Realistically, on current sales volumes, even with bogus ststistics, the marketing budget is not going to run to that holiday in Eyebyeza that you so badly want. You could try sticking out for the iPod Nano, but that is probably push and go. -- ..andy |
#29
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Andy Hall" wrote in message ... On Thu, 6 Apr 2006 20:47:31 +0100, "Doctor Drivel" wrote: I haven't quoted ant stats. Yes you have. You said that 95% are not. Where is your source for this statistic? Me. I know these things. Oh I see. That's better |
#30
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Doctor Drivel" wrote in message reenews.net... "Andy Hall" wrote in message ... On Thu, 6 Apr 2006 18:00:04 +0100, "Doctor Drivel" wrote: "Fred" wrote in message . .. "Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How many service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I haven't quoted ant stats. Yes you have. You said that 95% are not. Where is your source for this statistic? Me. I know these things. They say 82% of statistics are made up on the spot. |
#31
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Can anybody recognise this plumbing item. I think it may be a de-aerator
"Fred" wrote in message ... "Doctor Drivel" wrote in message reenews.net... "Andy Hall" wrote in message ... On Thu, 6 Apr 2006 18:00:04 +0100, "Doctor Drivel" wrote: "Fred" wrote in message .. . "Doctor Drivel" wrote in message reenews.net... "Christian McArdle" wrote in message ... Matt, again..."If the system is not re-dosed, and 95% are not, then the Magnaclean prevents blockages". Got it? The same ignorance that would cause people not to replenish their inhibitor will predicate against the use of an expensive alternative. If it is fitted on a boiler change or new installation then it is there, even when the house changes hands and the new owners are ignorant of inhibitor. How many service engineers replace inhibitor? How many bother to check if it has been replaced? Given that in reality inhibitor should last many years despite what it recommends on labels, the statistics you quote bear little resemblance to reality. I haven't quoted ant stats. Yes you have. You said that 95% are not. Where is your source for this statistic? Me. I know these things. They say 82% of statistics are made up on the spot. They don't. You made that up. |
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