How To Flush Central Heating System and Why - Leeds Plumber
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- Опубликовано: 31 май 2024
- Why does my new Boiler Need Flushing. My Plumber has told me the central heating needs a flush.
Will he do a Powerflush or a mains flush.
Plumber gives secret tips on flushing central heating radiators.
Mains Flush. Flushing a heating system without a powerflush machine.
Leeds Plumber showing the different ways to flush a heating system.
Plumbers tips for newly qualified plumbers / Trainee Plumber. 
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This guy is great. Really wants to help people and make things clear.
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Allen you really helping out plumbers with your videos mate .I really appreciate your effort .Thanks a lot
Thanks.
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Yes I am subscribed to your channel
Thanks
Allen would you help with more fault finding Videos and wiring up S and y plan if you would do underfloor heating wiring to system and combi and would be great
Cracking content Alan and very useful for gas engineers coming and who can’t afford a power flush 👍👍👍
Thanks for the work you're doing to help people.
GREAT video Allen, once again.
Very informative.
REALLY appreciate all your hard work in doing these videos.
Thank you.
Excellent video.... I agree time is against you when flushing /boiler fitting ..
I always visit the job a week before to add chemicals an let them use heating as Normal.. go back the day before and give the system an bloody good flushing, mains flushing back and forward until water is is clear.. reconnect up to existing boiler
Return next day and swap boiler an works .. then give a final hot flush an then add inhibitor ... hope that’s enough to be suffice for benchmark
Thanks.
Nice info. Great job. Many thanks. Just ordered new pump, prv and diverter cartridge. Will now fully flush the system and fit magna filter.
Thanks helped me understand the operation, when my plumber did it. Great videos.
Allen, many thanks for your efforts. Very useful video.
Great job Allen thanks for taking the time to help people
Our pleasure!
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Even though you live near France I've been watching your videos.
Thanks for watching but i live in Leeds ( UK )
@@AllenHart999 yes close to France. I've been getting more confident servicing my Baxi 310 FI because of channels like yours. I live in The Bronx NY(yes,lots of killings and shootings) and these boilers are unicorns. No one knows anything about them. I'm crippled in the winter time scared to leave due to them shutting down at worse times.
Comment of the year 👍🏻
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Absolutely amazing. Much appreciated!
Another great video! Keep ‘em coming!
Great again. Love the car engine oil analogy!
Great in depth explanation thsnks Allen
VERY NICELY DONE. IT WAS GREAT THAT HE USED DRAWING ON THE WHITE BOARD TO SHOW AND TO EXPLAIN THE WORKING OF THE BOILER, WHICH I'D SAY REALLY COMPREHENSIVE. I DON'T REALLY GIVE THUMBS UP OR DOWN OR EVEN MAKE ANY COMMENTS BUT I JUST COULDN'T RESIST FROM DOING SO COS IT WAS EXCELLENTLY AND VERY CLEARLY EXPLAINED.L, SO CHEERS MATE ,KEEP THESE SORT OF VID'S FORTHCOMING.
Great effort as usual Allen 🙏 many thanks
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Thanks Andrew a really helpful video
Thankyou. Very well explained. Some tips I learned of you.
Allen another brilliant video, you are really helping many plumber's out there bud.🌟🔥
Hi David. Thanks so much for your kind words.
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Thanks Alan. A massive help and very informative.
Very welcome
Great Video Allen , really good information
Fours years in Ans so obvious yet overlooked. Thanks mate !!
Thanks.
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Allen great video bro, love your work and content!
Thank You.
Nice explanation of the flushing process Allen , ive recently purchased a new tool made by Fernox , it looks like a painters roller about 200 mm in length and is used to roll up and down on the rads to agitate the magnetite inside the rad and help to remove it while flushing , basically its a rubber roller with a very strong magnate inside and you use it the same way you would if you where roller painting a wall , from what ive seen it seems to help a lot in the removal of the built up sediment inside the rad....
Cheers Allen
Have you used the Fernox Tool yet? I have seen it but didn’t really see the point. Be interesting to see how you get on with it. Thanks.
Thanks Allen for guide.
Thanks.
Well explained thanks. Top guy, keep on the good work of sharing the knowledge.
Thanks
Thank you so much.
Thank you for the video!!
Alwayz brilliant videos Allen thank you
Thanks.
@@AllenHart999 Allen is it possible to do a mians flush on a vented indirect system?if so can you make a video showing a diagram like this one as you have made it very easy to understand? Thank you once agian
If the existing boilers functional. I prefer to do a hot flush balance the filling loop with the drain off and keep the boiler running on full. If I can tap into the flow then I will. In most cases I'll always reccomend a magnaclense if the system water looks particularly dirty. The powerflush comes out as a last resort. Or if the customer requests. I'm pretty sure adey with replace your rad agitator if you send them a pic of your broken one. That piece comes with a lifetime warranty. Brilliant work Allen, appreciate your hard efforts. 👍
Thanks for the feedback.
Excellent video !
Thank you very much!
Great video - clearly explained a credit to the city of Leeds! I have a radiator need to patio door and outside drain that has a drain tap on it. Presumably it would be best to use this to connect the hose pipe to drain off rather than connecting to the flow?
Very informative video thanks
Glad it was helpful!
Great content as usual. Thanks mate.
Glad you enjoyed it
Very helpful Alln
Great video. I always try work like this. Rather than been stood around i try have a good work flow. While one this is been done I do something else etc 'work smarter not harder'
Thanks for sharing!
Hi Allen ive got a 10 mm microbore system with a potterton profile boiler 30 yrs old now still going and serviced every year. I asked the guywho just done a service about a powerflush as the system has never been drained he said its no good for microbore.
Any thoughts ive got a few cold spots on the rads and boiler is a bit noisy at times.any advice would be appreciated
Great video thanks
Thanks this video was very helpfull.
You're welcome!
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Superb 👍👍👍 really helpful
Thanks.
Thank you
Have to say Allen was doing that 50 years ago ! Particularly with the advent of the low water content boilers, but a good video mate!
Thank You.
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Great, great video, thanks a lot🙏
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Hi Allen. Here's a comment so RUclips knows your channel is awesome!!
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@@AllenHart999 Already am ; )
@@keitho77 Thank You.
Good honest guy, Thanks
Thank you very much.
Brilliant video 👍🏻
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@@AllenHart999 already subscribed 👍🏻 great videos, really helpful to me and many others. Keep up the great work. Cheers
Does this flushing process work for an older type non pressurised heating system? What is to stop the flushing water going into the feed/expansion tank and overflowing from there? I did find some useful ideas to help flush my system, so thanks for that!
I always do a cold flush but never used a power flush machine, would be great if you could do a video doing a demo with a power flush machine. Don’t know which one to buy so would probably buy the one you demo 👍🏻 Also you’re never babbling mate don’t worry you’re helping a lot of lads out. Take care 👍🏻
I have done loads of videos on power flushing. Just type my name in the search and powerflush . Thanks
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No worries mate! I’m already a subscriber think I subscribed when you had about 10K subs. Cheers for that I’ll have a look at your power flush vids now 👍🏻
Hi Allen. Thanks for another good video. How do I get the diverter valve in my baxi duo Tec to stay in CH mode to flush through filling loop? Cheers.
great video.. thank you.
Thanks.
You doing well please keep going. 😊
Thanks Allen 👍👍💐
Thanks.
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Thanks Alan . Great idea to save time by running two jobs at once
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Im planning of changing my 20years old rads to new rads, together with new boiler, which flush is required to be done first, main or power, by British standard regulation 2019? This I hope for the benefit of homeowners.
Thanks Allan for all your videos. Highly educational👍🏼💫👨🔧
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Superb please keep it up
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Cheer Allen, you are worth your salt 👍
Hi Tom. Thank you for watching.
Great video as always, but you have missed out something which non professionals might not know: to do a flush, any motorized valves controlling the heating, and cylinder if this needs a flush, must be open, otherwise the water won't circulate. I made this mistake on my system, which uses motorized valves on flow and return: when the electricity is powered off, the valves default to closed position.
Hi John. Thank you for the comment, This video is aimed at new plumbers really, Just showing a different way. Thanks.
Allen, can you also please explain a mains water flush process for an open vent heat only system, and the best way to plug the water inlet and expansion over flow. Regards
Yes, I will talk about it on the end of my next video, Magnacleanse video, Tried to do it live today but poor signal. Thanks.
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Great content Allen. Quick question. If flushing the system this way, is the boiler supposed to be on or off? Also on the Omega filter, are both valves supposed to be in the open position (just like normal)? Would appreciate your knowledge!
Another great video have you ever used the Thoroughflush mains flushing unit? Great piece of kit.
I don’t really have a need for the Thoroughflush, Thanks
Hi Allen, can I flush using the maga clean connections so not to disturb any piping in and out of the boiler, obviously this means flushing though the boiler? Thanks
Great video,Allen have you come across any magnetic filters that have started leaking or any that have just popped off the nut fittings?
E K 😂😂😂
Great video. You clarify my most of my questions. I will be grateful if you coudl answer me about two motorised valves (actuators) for heating upstairs and downstairs, so if I want to perform water flush I should switch boiler off and open both valves in the same time?
Thank you for effort while recording this video. All the best for you
Yes and yes
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Like the boost your productivity idea Allen, while getting on with other things, really useful for the unexpected emergency changeovers, where time is always against you. Cheers.
Little tip back for you: Get a small funnel and adapt it with a fitting to fit onto the filter, much easier to put the chemical into the filter without spilling any. same funnel with a bent 1/2" male iron is good for dosing chems into a rad on open vent system with no filter. HTH
On a side note mate: You look much happier and relaxed of late with is good to see. :-) Take care.
Hi Julian, I have one in van lol... Too lazy to get it. Thanks.
I had a boiler installation Engineer wouldn't care that radiators are 20 years old . He wouldn't even bother with flushing the system.
Luckily I apply common sense and done it prior installation.
Radiators change and flush done ✔
So, isolate boiler, blast thru system at mains pressure, each rad sequentially, whilst you have a few ciggies n brews and take the old bolier offa the wall? I've done that b4. Meks sense.
Got dragged out today to a 3 rad, vented system with a small HW storage cylinder on a canal barge. Pump was running off a 12V supply. Had a log burner fitted and a secondary diesel heat source for summer added later. f&e tank was the size of a matchbox. Had to admit defeat. R. Don was frozen. Few dead fish trapped in the ice. Grabbed a couple. So, at least only had to buy a bag of chips fromt chippy on way home for mi tea. Happy new year, pal!
Happy New Year.
Legend!!
Great information - Thanks Allen. A couple Questions for you: I have an older system boiler with header tank and have found the drain valve. Problem I want to sort out is two radiators wont heat up fully, all rads have been bled. I don't think there has been a power flush done for over 10 years. I have just connected the hose pipe to the drain valve and done a manual flush until water comes out clean. 1) should I add any cleanser or inhibitor ? 2) Should I fit a MagFilter 3) Do I need a power flush ?
Hi Hemant. It’s very hard to give advice without seeing the issue. Maybe you could do a water sample?
Hi I have the same problem as you and same system with a drain to the outside also couple of rads not warming up properly how did you solve the problem. thanks
Allen, when doing a mains flush, but not fitting a new boiler,. A Combi with a magnaclean fitted,.
Do you isolate one of the valves on magna clean,. ?
Just had a new boiler fitted, one rad wasn't working, the installer has fitted a new TRV head and valve, but it's still cold. I've also used an infrared thermometer to check the working rads and they are approximately 10 degrees colder at the bottom than the top. Does that mean that the system hasn't been flushed sufficiently on install and needs a power flush?
Brilliant as per usual, would be nice to see visuals, just to be a bit clearer
Very well explained and extremely helpful. Thank you.
Hi Dean. Thank You for watching.
Hi Allen 👋 great video , I sort of feel a fool that I haven't been using that flushing method as it makes perfect sense on maximising work production. Thanks for that tip 👍
My 1 and only question to you is regarding the radiator cleaning. The sequence ect im fine with and totally understand but what I would like to know is do you partially fill the radiators with water or do you fill them full and vent? Which in your opinion is best effective?
I know Adey advise to partially fill rads then use their aggerater on the drill to move most dirt sat inside.
Kind regards
Aaron
(AMJPLUMBING)
This channel is all about learning. Hopefully we can all learn things together. Partially filled rads make sense but takes more time. This is to show a faster way to flush while still doing the rest of the work. Hope that makes sense. Thanks.
@@AllenHart999 thanks geezer 👍
Excellent vid again . Can you explain the method for an old vented system Potterton suprima ( not combi ). Cheers
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Hello, I wanted to ask a question: In my boiler I hear a bubbling noise as if it is boiling inside the primary exchanger.
Could you please help me understand the problem?
Thank you
Thank you so much. Flushed through system and cleared out a lot of crap. Can you advise about the setting of the Lockshield valve? Every rad has a TRV and the some people where saying close the Lockshield right off then half turn on, is this correct?
Thank You
Is this for a combination boiler as apposed to a condending boiler and hot water cylinder. would you have cold water system connected to your boiler on a latter type.
I pressurise my system at a small red tank next to my hot water storage cylinder .
Also
I have a radiator flush point near my front door.
Is this normal
Im not a plumber but this makes sense to me 👏👏
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I have a magnetic MagnaClean Prof 2 ADEY filter installed for my GRANT combi boiler. I cleaned the element with water, some kind of solvent to remove the sludge and mechanically removed the metallic particles from the element. I am going to run the boiler with a cleaner and afterwards I am going to add the protector chemical in the filters bowl. do I have to flush the system's water to completely remove the cleaner before I fill the filter' bowl with the protector chemical?
Hi Elen. Very good question. I would always advise to remove as much of the cleaner as possible, The more clean water you flush through the better. Hope this helped. Thanks.
goodman 👍
Have you ever compromised the water tightness of the rads by cleaning off all the sludge inside? I know I have. Two rads pinholed shortly after flushing.
I have flushed hundreds and hundreds of systems and had maybe 3 rads pinholed. Thanks.
hi Allen. I am currently trying to flush out a combi system.Boiler switched off, drain hose on end of line, opened but nothing draining.what is causing the lock out
I wonder why the system cannot be flushed out while the old boiler is still in situ, if it still works of course but is just on it’s last legs so to speak? Then nothing will go into the new boiler at all as everything will have been removed before it is fitted. Am I missing something as I know nothing about boilers but want to learn as mine will need replacing soon. Would you recommend the Viessmann Vitodens 200-W from both a performance and ease of service point of view, for a 3 bed detached with 1 bathroom and 1 shower room and 10 rads?
it can. but it would cost you more as it takes more time and you also need to flush the new boiler. Thanks.
Where are the camp locks from mate ?
I now normally have a tee with iso valves on the flow and return of the new pipework for the boiler
Remember we need to use a back flow prevention device when filling. Cam loc came with magnacleanse. Thanks.
Great video well explained
Is this the same for my old system that has a hot water tank
When I replaced radiators I put a cleaner in for a week then just drained the system and refilled a few times till the water ran clear
I also took the radiators that I didn't replace outside and flushed them out with a hose till all the black water was gone
Thanks
Not really. This is when changing a combi boiler. Thanks.
@@AllenHart999 thanks for the reply
Would you have to go up to the loft to connect a hose to the pipe coming from the small tank
Or could you do it via one of the First radiator pipes on the system
Thanks
@@tommyneil303 to do what exactly?
@@simonstones1918 flush all the sludge out
Or would refilling after and putting a cleaner in and draining a few times
@@tommyneil303 oh I see! Yes either option to get the cleaner into the System 👍
Hi Allen I'm arranging with my plumber to fit new combi boiler replacing old gravity boiler late summer, I will need to also replace a load of seized rad valves would it be beneficial to remove the rads at same time and flush out in the garden with hose pipe higher pressure ? also in you're opinion should I have thermostatic valves fitted, hoping to do this prior to the plumber coming to save him time and me money thoughts please.
You would need to speak to your plumber. I would personally charge for a flush anyway. Thanks.
Does the new thorough flush replace the magna cleanse or not ?? Cheers allan , great video as usual x
Thanks for the question. The thorough flush is just a mains flush no better than this in my view,
Great vid, easy to understand. I still think its easier ti change the rads then doing a power flush. For £300 (average per house) you can have all new rads and do a quick mini flush and you will be good to go for atleast another 5 years. What do you think Allen?
New rads still need flushing. Thanks.
New rads for 300 quid..dream on!
Small house if you can get all rads for £300!
New rads still need flushing
I always drain the system and add clean water into the system with cleaner ill have the boiler running for a couple of hours to make sure all the magnetite breaks up and ill go round each radiator and use a rubber sds mallet to remove any sludge that's stuck to the rad. After this ill close each radiator individually to make sure each rad is getting a good solid clean. After this ill turn the boiler off. Ill then flush all the cleaner out of the system and re instate the system with fresh water and inhibitor. Ill then balance the system so that the system is working efficiently again. Usually takes me half a day. To do a flush alone. If its a new install I usually take a full day.
Hi. Im thinking of replacing my boiler soon. I gave a lot of time so rather than flush it the way you've said can i take out each radiator and flush them with a hose outside and the reconnect them and use a connection to flow and return and do a final drain from the lowest point using the lowest point radiator drain?
You can take the rads of and flush but you still need to flush the pipes. Thanks.
@AllenHart999 yes thats why i said after you take the rads of and flush them you need to replace them and run water through the whole system
HI mate good video how are you controlling the water pressure? As this may over pressure the system and cause leaks . Thanks
Very good question. It’s a bit of guess work really. It’s always worked well for me and I have never had an issue. Thanks.
Can leave pressure the boiler and keep boiler on and use the hot outlet to flush through boiler with hot water
No unfortunately not. Thanks.
@Allen Hart @Allen Hart @Allen Hart is it almost mandatory to do a chemical flush on a install job? 2. @ 12.33 mins you said return to boiler do you mean the muck going out of the drain off near boiler?
3. @ 12.49mins you said about chemical flush and no option but to push it through boiler ( you actually mean the muck gets pushed through boiler.?)
You are star
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Do you turn off both lock shield and TRV side or just TRV side when flushing?
Normally do the lock shield. Also take TRV off and make sure the pin isn’t stuck down. Thanks
Alan Can you please do a video how to install a shower and a pump from the main central heating system ? Thank you
I will see what i can do.
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Thank you very much . You are brilliant
@@AllenHart999 Thank you very much 😊
@@AllenHart999 Thank you very much Mr Allen 🙏
If i have british gas comming fitting a new boiler, should they be flushing my system without additional costs due to new part L of building regs?
Most companies charge extra.
do I need a bottle of cleaner for each radiator when we do flushing the radiators one by one and isolating all the others?
Depends on the size of system and the chemical you use but I normally use 2 tubs when flushing. Thanks.
I got one of them omega adapters. Only problem is it don’t fit the fernox TF1 sigma filter
Could same be done on a radiator
hello Allen, can i connect my power flush machine on radiator flow and return away from the boiler?
You could but i wouldn't personally. Thanks.