All radiators different temp in different areas

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Hi,

I have recently moved in to a new house which has some different types of radiators, some 2 bars deep, some only one. The house is over two floors and I have a combi boiler - Vaillant Eco Pro 24.

The pressure was lowish but I have increased it so it is mid way up the gauge by reading other advice. I have read the other posts and think I might have to flush them out as none of them are very hot at all.

One pipe in is warm (not hot though) and the other bottom pipe is cold.

There is some warmth at the top of the radiator, and a little on the same side as the warm pipe going in but the rest is cold or tepid at best.

What do I need to do? Is it sludge or something to do with the exit pipe being cold?...The one radiator which works best (but has a sofa in front of it) has both in and out pipes hot!

Ideally a cheap fix as having an extension soon and boiler will need to be moved as a result!

Cheers!

Hamish
 
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Sounds like the system could do with powerflushing. Cheaper alternative is to introduce a de-sludger ( sentinel X400) into system as per instructions on bottle and see if that works...
 
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Magna flush is 3x more effective than a power flush and the results can be seen. Still, might just need balancing. A quick test to see if it does need balancing would be to blast each rad with pump pressure individually and to see if each rad gets warm all the way though top to bottom.
 
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Magna flush is 3x more effective than a power flush

What the hell is a Magna flush? and how does that differ from a Power flush?

And is this 3x figure universal?

I only ask as flushing as a whole is a rare necessity.

Very often it is poor system layout, poor balancing, or a dying pump.

Not that a total sludge up is off the cards...


That boiler was over 30 years old though; and plumbed in terrible.
 
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Magna flush is 3x more effective than a power flush

What the hell is a Magna flush? and how does that differ from a Power flush?

And is this 3x figure universal?

I only ask as flushing as a whole is a rare necessity.

Very often it is poor system layout, poor balancing, or a dying pump.

Not that a total sludge up is off the cards...

Sorry I meant magna cleanse not "flush". Those pictures are great, where were they cut out?


That boiler was over 30 years old though; and plumbed in terrible.
 
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:LOL: :LOL: :LOL:


My pics were from an old Kingfisher that was in a bad way. Two pumps, with no zone valves, one pipe heating system mashed in with a two-pipe (different floors). No proper control wiring - in fact, even though we had looked after it for 15 years and replaced bits; and even when stripping it all out for the conversion to a combi... I never figured out exactly how it was supposed to work :rolleyes:

Found some real comedy plumbing in the eaves for the one-pipe rads.

the pics were actually un-characteristic of the system as a whole. The pipework was the feed and vent tees on the cylinder below the F&E tank - about 10 straight feet up.


*edit* that pipe wasn't cut out. the nuts on compression joints were undone either side - the solder fitting actually fell apart when we took the pipe out of the undone compressions fittings. One careless knock putting anything in the cupboard would have ended - wet and rusty :LOL:



the rest of the system was fairly clear - and once the helter skelter pipes feeding some of the one-pipe rads was tidied up, the customer has never been happier.

Magnaclean gets nice collection every year. Enough to justify its presence, but no where near enough to warrant any further intervention.
 
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:LOL: :LOL: :LOL:


My pics were from an old Kingfisher that was in a bad way. Two pumps, with no zone valves, one pipe heating system mashed in with a two-pipe (different floors). No proper control wiring - in fact, even though we had looked after it for 15 years and replaced bits; and even when stripping it all out for the conversion to a combi... I never figured out exactly how it was supposed to work :rolleyes:

Found some real comedy plumbing in the eaves for the one-pipe rads.

the pics were actually un-characteristic of the system as a whole. The pipework was the feed and vent tees on the cylinder below the F&E tank - about 10 straight feet up.


*edit* that pipe wasn't cut out. the nuts on compression joints were undone either side - the solder fitting actually fell apart when we took the pipe out of the undone compressions fittings. One careless knock putting anything in the cupboard would have ended - wet and rusty :LOL:



the rest of the system was fairly clear - and once the helter skelter pipes feeding some of the one-pipe rads was tidied up, the customer has never been happier.

Magnaclean gets nice collection every year. Enough to justify its presence, but no where near enough to warrant any further intervention.

Very true, but you should of seen the magnets the other day on a magna cleanse job I did, they were full of black sludge.

Ive upgraded a lot of systems to fully pumped, and used the old 28mm circs to save on cost but haven't seen any quite that bad. If they were even a little clogged up I'd run new circs. So basically that system was a ticking time bomb too,ha.
 
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This lot was mainly ¾" - spunked a lot on olives an E/f adapters on that job, but now it is sealed, the top floor is still one-pipe, and it all works perfectly bar one rad.

Like I said, I had to take out a bizarre pair of looped pipe might even have a pic somewhere) and there was hardly any much in it.

I have thought about buying a Magna-what's-it to do gentle "system running naturally" flushes, but frankly, with the boilers we fit, 95% of the time it is unnecessary, and for the odd few each year where it is bad, we get a specialist in who will do it without trying to flog other things to the customer. If there are any subsequent problems, we just call them back.

Which has been once in three years IIRC.
 
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All you RGI`s should get together and sign a Magna ( cleanse) Carta :rolleyes: You could then go for a Ruby Murray - and agree to stop arguing :LOL:
 
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