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Post by rocketmanbkk on Dec 17, 2019 10:36:47 GMT
Hello
Is there anyway to identify a one pipe system without taking floors up please?
Cheers all
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Post by tomplum on Dec 17, 2019 12:56:30 GMT
Its very rare to see a one pipe system today , only on a old 40 year old system with a back boiler or a cast iron boiler with no controls at all, because you can't control a one pipe system because it would take more work putting 'link up' pipes in that it would to repipe it all together, Having said that, there are always exceptions to the rule, So the only 100% sure is to know , the pipe going into the rads is the same pipe coming out, if you can't see that on the surface because the pipe come out of the floor, you'll have to find the easiest to get a board up and check it from there,,  |
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Post by rocketmanbkk on Dec 17, 2019 13:10:08 GMT
Its very rare to see a one pipe system today , only on a old 40 year old system with a back boiler or a cast iron boiler with no controls at all, because you can't control a one pipe system because it would take more work putting 'link up' pipes in that it would to repipe it all together, Having said that, there are always exceptions to the rule, So the only 100% sure is to know , the pipe going into the rads is the same pipe coming out, if you can't see that on the surface because the pipe come out of the floor, you'll have to find the easiest to get a board up and check it from there,, Ok cheers Tom I think I’ve got one. Back boiler & house had nothing done since the 70’s it looks like. |
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Post by rocketmanbkk on Dec 17, 2019 13:11:40 GMT
Sorry, do if I turn a rad off, both valves, will they still be able to get hot water from the back boiler. I say yes as it’s separate water but someone is telling me no
What do you think?
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Post by tomplum on Dec 17, 2019 16:13:50 GMT
yes you'll get hot water, the water and heating are totally separate, If its a back boiler, the hot water will work off gravity and the heating will work off a pump, turning one rad off SHOULD not affect anything, even on a one pipe system because, the heating water will be tee'd into each rad so if one rad is turned off, the others can still work,
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Post by crowsfoot on Dec 17, 2019 17:21:08 GMT
One pipers normally warm up in turn, a 1st 2nd 3rd 4th all the radiators following each other to heat up, whilst on a 2 piper the radiators should all warm up at the same time if it's been balanced.
A lot of 1 pipe systems don't have a lock-shield valve on the radiators either.
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Post by endfeed on Dec 17, 2019 18:24:47 GMT
I came across a one pipe system on a combi boiler few years ago, and it all ran well. On the plumbing commercial side the flow is at the top of radiator and flow out at bottom of radiation, I guess this helps circulation. The last rad struggles to get hot. I think they have to have there own special trv too, rocky.hope this helps 👍
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Post by rocketmanbkk on Dec 17, 2019 18:49:29 GMT
Thx all
Much appreciated
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Post by tomplum on Dec 17, 2019 19:25:29 GMT
I came across a one pipe system on a combi boiler few years ago, and it all ran well. On the plumbing commercial side the flow is at the top of radiator and flow out at bottom of radiation, I guess this helps circulation. The last rad struggles to get hot. I think they have to have there own special trv too, rocky.hope this helps 👍 that was a common way to pipe rads in the early days of central heating, even in domestic properties, the big problem with that was, if a rad was collecting air, it stopped the circulation because the pipe feeding the top of the rad now had a gap, If the pump was powerful enough and on the flow it would force the water into the rad and you would hear a waterfall sound, it was a very good feature in a bedroom as the couple were having sex on a water bed in candle light to the sound of trickling water,,  |
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Post by endfeed on Dec 17, 2019 20:09:55 GMT
If a water bed pops/leaks is it a plumbers job to repair,😂😂😂
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Post by arfur chrysaik on Dec 17, 2019 22:21:49 GMT
If a water bed pops/leaks is it a plumbers job to repair,😂😂😂
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