Another house saved from a combi

[@jimtaylor431]

The pipework you do is like a work of art, honestly! I'd open my cupboards regularly just to admire that installation!

[@UrbanPlumbers]

I always tell my clients to change the doors for glass ones. No one listens :(

[@mcDarkD]

not just the pipework imagine having to put that back together. kitchen fitter did ok. better than most.

[@mufuliramark]

The fact that you film your work and discuss your plan immediately gives me confidence in you as a skilled engineer.

[@nigelsears7191]

nice to see you actually ask the customer what they want from the system , then you can tell them what is possible and with any luck at the end they are happy , well done nice install

[@johnoconnor9742]

Its great to watch a professional work, especially one that cares about his customers, I really enjoy your videos

[@UrbanPlumbers]

Thanks 👍

[@pspr33]

Absolutely second this sentiment. I've turned to doing 90% of the jobs that need doing on the house we moved into 6 months ago because most trades people we've had in don't give any hoots about the work they do, they just do bare minimum and run. I'd rather do jobs to my best ability than paying a trades person to do a job to the least of their abilities.

[@hoshm5496]

I think most people would have just said “well put electric showers in then” so I’m impressed with your proper professional solution and clearly quality workmanship 👍

[@UrbanPlumbers]

There already was an electric shower there, so they could see how hopeless it was

[@hoshm5496]

Exactly my point, you found an actual useable solution to the problem and did a great job of it. You are a credit to the trade keep up the great work my man 👍

[@stevel5504]

I love your technical knowledge! Never even heard of an x plan system before. Great video man. Wish I could come and do some work experience with you.

[@UrbanPlumbers]

Where are you based? Nothing is impossible, just ask?

[@stevel5504]

@@UrbanPlumbers I’m based in Oxford.

[@ursula662]

love watching stuff like this, not a tradesman but always a pleasure watching people who know their craft so well they can explain it and educate you as they do.

[@UrbanPlumbers]

Thanks for watching

[@mariaanderson505]

I very much enjoy watching your videos. I have no intention of ever doing any plumbing but your videos explain to me how much work is involved and how you solve a problem. Gold standard plumbing for sure and very interesting

[@kevinpickett7249]

Well been a sparky for 40 yrs and wired nearly every system going but I have to say that’s using your brains and not going the easy route with a combi 👍

[@efrygasservices6169]

I have never fitted, nor seen a hot water priority system believe it or not. Thanks for your videos showing how it works 👍 A nice neat job.

[@UrbanPlumbers]

Try it! It gives better hot water reheat times, better efficiency on heating. You can also install much smaller cylinders. If you were to pair a 30kW intergas boiler with a 125L high gain cylinder ( joule for example) you can have under 12 minutes reheat times, meaning you can never run out of hot water when using one outlet , pretty much like using a combi but with much better flow rates. You will also stand out from your competition when quoting.

[@silvervanmanfly]

Neither have I, this is the first I've heard of it. Interesting.

[@MegaBambooboy]

That's the benefit of an intergas boiler, PDHW.

[@b-m-c]

​@@UrbanPlumbers hi great videos! I have a 30Kw System gas boiler (not priority set up) and a 250L indirect Gledhill. With UFH to ground and RADS to upper floors, what flow rate would you advise temp to be set at to best heat tank to temp, and be as efficient as i can with this set up? Keep up the good work!!

[@richydowner7183]

When I retired from plumbing in 2005, push-fit was just starting to come in. I’ve never really used it, it was galvanised threaded pipework, soldered joints, bronze welding or arc welding plant room headers. Being Corgi registered was a real ball-ache, push-fit looks like a dream to use. No blow lamps or benders required.

[@Steve_T14]

Can cause a lot of hassle as the fittings can sometimes pop off if fitted incorrectly or faulty and it doesn’t look as nice as copper, also can’t install plastic too close to the boiler, needs to have a minimum 1 meter run before using plastic because the boiler can melt it, but is definitely easier to install and cheaper because of how expensive copper is right now

[@springtown24]

you surely mean PRESS fit not push fit.

[@praefectus6492]

Dude your by far the best plumber I've seen. Good job man keep up.thr good work

[@UrbanPlumbers]

Far from it, there is loads better guys out there. Bbt thank you for a nice comment.

[@pbrobotspbrobots1710]

hats off to you for taking the time to do these videos and show customers just what is going on in the world of plumbing and heating. as for the combi boilers, aaahhh. everyone thinks they are the answer to every refit.

[@UrbanPlumbers]

Yep - that is the case. Thank you for your comment

[@topgazza]

You are such a talented plumber it's unreal. Love this channel

[@UrbanPlumbers]

cheers mate!

[@davidellis279]

The pipe work he installed was beautifully done ✅ in fact the whole job was done in a very professional way,the crap in that system was unbelievable,I’ve fitted my own Combination Boiler a couple of times over the last 20 years,after flushing the system I’ve always put Bluecol antifreeze in the system instead of the chemicals they use,I did this because we have two houses in different areas one of which is a holiday home and doesn’t get used much in winter so the risk of freezing up is minimal if the frost stat fails,the water in my systems is as clear as it was the day I filled it with no sediments at all,I’m Not a plumber but a truck mechanic and you Never see muck like that in a truck cooling system that has had antifreeze in it continuously so I decided to give it a try and have Never had any problems with boiler or pipe work in all these years,no corrosion at all in the steel radiator’s,good as new after inside after 12 years.

[@djenson]

Can't wait for the next heat-pump vid. Our has been an absolute mess. First off they put the included thermostat that does outdoor+indoor compensation in a cupboard, and installed a wireless on/off thermostat with no compensation (was set to a fixed flow temp of 50*C), Was multiple leaks when the system was installed. Manage to fix most issues, moved the thermostat out and enabled temperature compensation, Is now costing a 1/3 of the money to heat the house and its much more comfortable.

[@UrbanPlumbers]

Glad you had it set up in the end!

[@rainbm]

@@UrbanPlumbers I’ve been a heating engineer for 16 years now and I love your technical knowledge, positive attitude, insistence on doing things right. You think like I do 😊. I called Intergas tech support a couple of days ago with a view to using one of their boilers for Two weather compensated heating zones and an unvented cylinder…. The guy I spoke to said it wasn’t possible…. I’m not sure I believe him! I’d love to have a chat with you some time. Mark

[@UrbanPlumbers]

@@rainbm it is possible

[@borisapantelic7186]

I love your videos man! Your technical knowledge is excellent! I suppose like you said in the video you find out what the customers expectations are and try and accommodate that in the install.

[@UrbanPlumbers]

thanks for a nice comment mate

[@jimmyslev]

Great stuff man, work is so solid and thanks for taking the time to show us how and why you’re doing what you’re doing. 👍🏻

[@UrbanPlumbers]

No worries. Thanks for watching!

[@user-te1le7ck6b]

Mate the fact you actually bothered to modulate the boiler properly for your client is a miracle in this day and age , well done for showing the lazy engineers how its done properly.

[@JasperJanssen]

As a customer I have long since taken to doing the command and control myself because no installer has ever done an adequate job, certainly not after thermostats were just bang-bang controls on a Honeywell round with a bimetallic strip. Our installers back in the day put thermostatic valves on all the radiators (and I mean all) without a bypass. And they were very miffed when we had them install one (we paid for it and all.)

[@user-te1le7ck6b]

@@JasperJanssen wish i was as adept but sadly modern boilers are more very complex systems

[@UrbanPlumbers]

proper boiler set up and modulating controls whould be a must on all jobs. A lot of cheap boilers (Ideal, Worcester Bosch, etc) do not even let you set the boiler or the pump correctly - meaning that those boiler never condesne and run with low efficiencies - and there is nothing you can do about it!

[@user-te1le7ck6b]

@@UrbanPlumbers like an idiot I went with a valiant 838 plus cause of bad installer advice for a 1 bath and 1 toilet property , mind you there are 8 rads and a towel heater but that’s how I know about modulation , the service guy promises he set it up best he could but god knows if it’s gonna help my gas bills glad I avoided those names at least , what’s your charge for a boiler service ?

[@mikehurst647]

Another smart installation,theirs slot to be said for using mapp press👍

[@patrickoregan7102]

Brilliant stuff mate. Your the best!! Always a pleasure to watch.

[@UrbanPlumbers]

Thanks again!

[@POUSEaroundtheHOUSE]

Love your videos, great detail and great workmanship. If I ever change my boiler and you fancy a trip to Wales then I'll be in touch! Best of luck with the channel 👍

[@UrbanPlumbers]

looking at your channel I should do it FOC!

[@POUSEaroundtheHOUSE]

@@UrbanPlumbers I might hold you that!

[@rickycunningham6368]

Love your content mate, makes us home owners learn more about the plumbing systems and fault find them, learnt so much from your channel, stay safe and well dude. Look forward to the next installment lol

[@UrbanPlumbers]

Thanks 👍

[@rickycunningham6368]

@@UrbanPlumbers no worries, you should do a video about the worst plumbing you've seen and plumbing disasters lol

[@grumpygit447]

Your work is first class Stay away from useless heat pumps

[@UrbanPlumbers]

Heat pumps are awesome !

[@Thorocious]

Long time lurker first time talker. Having done a plumbing course as a kid and not going forward with it as it didn't really interest me, I don't really have an interest in plumbing in general. But your videos are so good and those installs are so prestine I'm actually hooked on watching. Ohh and my brother-in-law has one of those press-fits... Just done a complete install in his house, I couldn't believe how well the finish was, really sets it off.

[@billytaj7708]

Great video. I know nothing about plumbing but this is very interesting. Also I really like the way you took what the customer wants into consideration whereas I find most trades people just want to do the easiest job for themselves.

[@paullaviolette2610]

Wow I just love watching your videos. Not that I am ever going to have a system like these installed here in British Columbia but it’s great to watch someone that knows what he is doing. I have been getting advice on heat pumps and sure wish I could come across someone with your skills. I just need to replace my forst air gas furnace that is working just fine with an electric furnace/heatpump. It would be nice to just add a heatpump system to my furnace but I was told it was built in 1993 making it too old so you need one of our new ones. I just don’t know what to believe anymore.

[@stephenrichards5386]

What a great looking finish

[@UrbanPlumbers]

Thank you!

[@replevideo6096]

When I needed a new boiler I chose a comventional one so I could keep the hot water cylinder. The old boiler could not be used because the heat exchanger was leaking and I had to wait a few weeks for the new one to be installed. If I had a combi boiler that would have been weeks with no hot water. I was able to heat the rooms with electric heaters. Also the new boiler was a straight swap except for the addition of a condensate pipe, making the installation easy and quick. which no doubt cut the labour cost.

[@leonardbalint4930]

another great video, thank you

[@UrbanPlumbers]

You are welcome!

[@ktm-bc1dw]

Again great work. Rocking it FairPlay

[@karelvvv]

In my appartement (1950's with double glazing, floor, wals and ceiling insulation0 I used to have an Intergas system you've installed, and oh boy that is an efficient one, in my current house (new built in 2018) on council heat I pay twice the price for the same KJ of heat energy, I'd wish my house was still on gas and could use a Intergas system again...

[@UrbanPlumbers]

I love Intergas boilers, the most versitale boiler ever made, let down however by the company that runs INtergas in UK big time.

[@karelvvv]

@@UrbanPlumbers I read the installation booklet, you can add hot water tanks and solar collectors, etc... Yes indeed very versatile...

[@sip5574]

@@UrbanPlumbers I know an engineer/trainer who was a Intergas technical lecturer and he left as he was fed up with the way Intergas were run in the UK. He still loves the boilers though.

[@deanfakes5314]

Good to actually see a plumber who uses a bender , the amount of 90 elbows i usually see, is unreal

[@UrbanPlumbers]

Cheers !

[@paulf2898]

"would you like something to drink? Err wine...Expresso ,cocktail?? I make it right back there myself...with a little lemon twist,it's good you should try it" 😜

[@peterryan7827]

Brilliant job and technically excellent work so clean and tidy , with full flush.

[@timhancock6626]

That is a Gold Standard installation.

[@UrbanPlumbers]

Thank you !

[@GeorgeCox]

really enjoyed this. you just got me as a future customer.

[@UrbanPlumbers]

Great to hear!

[@allanhughes7859]

Well there are plumbers and then there are plumbers and then there is you my friend I am speachles so so good at what you do !!!!!!!!!!!!!!!!

[@UrbanPlumbers]

Thank you so much!

[@Kulvinder1974]

Another well described video. Love it.

[@taylorwadeson2074]

Can I come work for you!? I'm a plumber unfortunately not into the heating/cooling side yet. You sir are a true tradesman.

[@gegwen7440]

Very tidy work & thats a fact !

[@UrbanPlumbers]

Thanks !

[@neo_265]

Great video and please ditch your southern clients for a few days and pop up north to fit a new boiler for me….love the look of the new 2023 Vaillant Ecotec Plus. Have you fitted yours yet? Looking forward to seeing how it performs.

[@fredjennings9268]

Top notch as always.🛠🏆

[@UrbanPlumbers]

thanks !

[@commuterbranchline8132]

Excellent work and video! Gas is complex, I glad I don’t have it installed.

[@UrbanPlumbers]

Gas is actually very forgiving and easy. Renewables are more complicated

[@k20aa]

Yet another lovely job .Great work 👌👍👍👍

[@UrbanPlumbers]

Thank you! Cheers!

[@ramodiebel9939]

Firstly, never been a fan of combi-boilers especially in London & South East so it's wonderful to see a like mind It feels a lonely conversation with customers/ clients regularly urged to go in that direction The equation to balance; accommodation, draw-off points, water quality & flow rate is only possible in a few UK locations & for specific projects Secondly, it's a rare & welcome experience to see a combination of design, technical & craft skills these days I hope your enthusiasm isn't drained/ diluted (forgive the pun) over time! Best, R

[@UrbanPlumbers]

Thank you for your comment. I am blessed with my clients who mostly trust my judgement and allow me to design their systems. There is a big lack of awareness among customers and engineers when it comes to efficient and well performing systems sadly.

[@13run]

Can you post a diagrams of how your wired the hot water NTC with the high limit stat please. Thanks

[@UrbanPlumbers]

I will do a full video about wiring with NTC and Intergas

[@13run]

@@UrbanPlumbers Thanks. You will find different wiring’s. Iv been working on One Xplan that Intergas say I have to speak with the designer. We also had an issue with a new boiler PCB. That was headache too. Then the flue was wrong 😂

[@UrbanPlumbers]

There is a lot of ways you can wiire x plan! I know of at least 4 ways to do it. I am working on a video that will cover it in full detail including NTC and high limit stat with NC and NO positions

[@UrbanPlumbers]

Generally you wire both NTC and High limit stat straight back to boiler. High limit stat is wired Common and normally open back to NTC connections on boiler PCB

[@13run]

@@UrbanPlumbers one diagram said wire in series the other was like what you have said. After asking around the manufactures changed the data sheet to on parallel. Let me see if I can find the diagram.

[@joelawton123]

Great install, so good to see someone that would never question staying until the job is done. When I had a new system installed a couple of years ago all they were interested in was getting to the next job as quickly as possible. We had two small children and a new born in a house without heating for three weeks because they couldn’t be bothered to work out the right way to integrate the new system with the existing pipe work or spend the couple of hours after the install making sure it was all working. Also, press fit is the future! Why doesn’t everyone use it??

[@UrbanPlumbers]

Leaving a client with a non-working installation for a week is pretty bad! I am sorry you had to go through that. Next time, chose your installer more carefully.

[@tonydization]

Quite high initial costs, press fit machines with all the different sized heads all in are easily over £1K and the fittings are much more expensive, relatively.

[@joelawton123]

@@tonydization I would look at the time saving to build value but I understand your point

[@tonydization]

@@joelawton123 I agree but as UP admitted he wan't sure on the relative merits but has become a convert as am I.

[@alemgas]

The machine costs about £1500 puts a lot of installers off

[@jonathanlanglois2742]

Those systems are so much more complicated when compared to what you find in the typical North American home. I'm from Québec, so almost all heating is done using electricity. The only place where you will find hot water central heating is large buildings such as hospitals and universities. Filters are rare. Most systems don't have any pumps as city water pressure is usually high enough. That also means we don't have any return, or circulation loops. That's one thing that I do think we could really learn from. Must be nice to have hot water almost right away when turning on the tap. We don't pay for water, so wasting a few litters waiting for hot water isn't a huge concern. The vast majority of North American homes only have a hot and cold pipe with an electric hot water tank that needs to be replaced every 10 years.

[@UrbanPlumbers]

Heating with direct electrics would be very expensive in Europe. However, this can change quickly with current Russian situation.

[@alexmorgan3435]

I know little about heating systems but by chance YT algorithm recommended yours. A+++. Now sub'd.

[@UrbanPlumbers]

Great! Thanks for watching !

[@stephendoherty8291]

Why would a 30Kw combi not be able to deliver priority DHW for 2 showers when each shower is not going to delivering a mix of hot water vs the heated boiler HW anyway (and some aerator taps would cut that HW demands for taps and perhaps an 2 water efficient shower heads?). How can the old boiler be expected to have ever worked if never power flushed or looked to have been serviced (whats the point of fitting a magclean if never cleaned out either). Any reason the client went for Nest over a other controls (like intertec ones) and were TRVs and weather compensator fitted?

[@paulplumb1648]

Now that's entertainment. Great video. Great work. Thanks 👍

[@UrbanPlumbers]

Glad you enjoyed it

[@garywright8846]

I’m amazed how the trade has moved on since I “escaped” the industry in 1995. When I started installing heating in 1974 the wall boilers were so heavy, I loved how you just picked this one up and passed it to your mate, the old Potterton Netaheats I used to install were a two man lift in the early models. Great vids, do you still need to be licensed to install an unvented system, I recall when they first came out, I was one of a very few who did the coarse and had the licence, that must of been in the late 80s. Love the flushing machine. Keep up the good work, how are your knees holding up?

[@UrbanPlumbers]

Yes you need a qualification form unvented that has to be renewed every 5 years.

[@cloud12274]

@@UrbanPlumbers not in Scotland, once you do it it stays with u forever

[@UrbanPlumbers]

@@cloud12274 here they caught on to the fact that they can charge you £200 every 5 years

[@cloud12274]

@@UrbanPlumbers it's all about the money m8

[@colinmiles1052]

The old boilers were heavy but lasted. Its all a trade off. Personally I don't like Combi Boilers - On - Off -On -Off but I'm just old and can't see it. Nice work.

[@truxton1000]

This guy is good!

[@UrbanPlumbers]

oh thank you

[@LarsEelke]

Love your work 👍 Intergas doesn’t allow their boilers to be placed in unventilated spaces under 5 kubic meters though. Their electronics fail at room temperatures above 40 degrees.

[@ratgrot3184]

That Novopress is a piece of miracle technology. Also It's still weird to me to see hot water cylinders. Only having a single 28kw combi boiler for everything in a 3 bed house.

[@jsmid]

Interesting stuff X plan that's new to me

[@UrbanPlumbers]

Yep, you can also do it with a standard 3 port valve with closed port to the cylinder. It is called D plan.

[@deniscudahy4549]

Excellent work 👍👍

[@UrbanPlumbers]

Thank you sir !

[@stevecharles8202]

You have convinced me that X plan, hot water priority on unvented cylinder (with variable output boiler) is the way to go... although I could accommodate a bigger cylinder.... Your final comments leads me to think there is a better option? Great videos btw! 👍

[@UrbanPlumbers]

I would recommend Vaillant 6 series with Senso Comfort Controls or Viessmann 200 on 4 pipe over Intergas. too much wiring and non-standard solutions are needed with Intergas. Viessmann and Vaillant are much more streamlined products with better modulation.

[@stevecharles8202]

@@UrbanPlumbers amazing thanks 👍 what about compatibility for controls - opentherm on multi zone heating? (Rads + separate UFH) - although the full weather comp seems a good / simpler option for the modulation? Thanks

[@UrbanPlumbers]

@@stevecharles8202 just use weather comp and no zoning unless you have UFH and rads. If you have UFH and rads then it is best to do what I did here: kzbin.info/www/bejne/hXibnXSKhamjjZY

[@GrahamF]

Excellent video, thanks! It's convinced me to change to an unvented HW cylinder when I get a new boiler. One question; I have Hive fitted, & not overly keen on it, as it's not really "smart", & would like to swap to Nest open therm. However, intend moving boiler to garage, which is next to current location of boiler where all the electrical connections are. Would it be a complete nightmare to move all the electrics to the garage? Plus, any recommendations for a heat only boiler would be appreciated. Thanks 👍

[@jimwoods9551]

All plumbers and sparks I've seen on KZbin moan about the quality of previous installations for 98% of their videos, afraid I guess to show how good they are (not?). Nice to see a very competent installer at work.

[@UrbanPlumbers]

oh trust me - I moan a lot about that too, I just cut it out from my videos, as it does not make for a great viewing ;)

[@copperskills3973]

I’ve only ever fitted Vaillant with pdhw and unless you use there cylinder the ntc sensor can give you a headache. Very expensive with vaillant too.

[@UrbanPlumbers]

Yes Vaillant PDHW costs a bit, true.

[@kevinjackson6387]

Lovely job there mate,I have just had a solar system fitted 3.2 array +3 battery’s x7.8kw,in a 2 bed house ,have a gas combi to heat 6 rads and hot water.I’m now thinking of changing combie as it’s coming to 10 years old ,but I’m not sure what is the best way to go now I have the solar ,I do have a electric shower but want to also want to change this to come off hot water .what would do if you were me ,many thanks

[@UrbanPlumbers]

Unvented cylinder with solar diverter and system boiler or air source heat pump

[@kevinjackson6387]

@@UrbanPlumbers thanks for coming back to me ,would you use a electric boiler in stead of gas

[@UrbanPlumbers]

​@@kevinjackson6387Definitely not an electric boiler! It will cost 4 times more to run than a heat pump and usually give awful hot water performance if it is a combi. Gas or heat pump only with unvented and solar diverter.

[@kevinjackson6387]

@@UrbanPlumbers thanks for that

[@atapplumbinginquiriesandre3557]

wow very impressive clearly really know your stuff :)

[@msc_uk]

Great video and detail 👍🏻

[@UrbanPlumbers]

thank you!

[@singlendhot8628]

Tado have relaunched their modulating thermostats if purchased via their website. Much better option than a Nest?

[@UrbanPlumbers]

I will be testing it on Jan if I have enough time

[@pauls826]

So when your flushing do you not go in forward and reverse to loosen sludge is that intagas filter made by fernox

[@UrbanPlumbers]

yes, flow reversal is great for picking up more debri, however I have found that some boiler can only be flushed one way. I don't know who makes Intergas filter. It does look a bit like fernox.

[@pauls826]

@@UrbanPlumbers I gathered so as you’ve got the adaptor for them one of my friends puts tees on his pipework for flushing in future it’s a good idea just takes up a little space

[@jorkirasalas2726]

Is X-plan limited to Intergas boilers? Ive just had a Viessman 100-W system boiler, unvented cylinder and Hive controller fitted as S plan. Hadn’t realised this doesnt allow OpenTherm control for efficient boiler modulation on room heating & with current fuel prices wondering how to achieve OT without getting plumber back to convert to 4 pipe DHW priority system.

[@UrbanPlumbers]

Viessman can be done x plan or 4 pipe. Installing Viessmann on S plan - hmmmm

[@jorkirasalas2726]

Ah, that’s good to hear, many thanks! Do you have a link to a wiring diagram for Viessman on X plan?

[@TheLegend-nx3mm]

Excellent video Simon. Have a new boiler installation plus power flush, radiator upgrade in Lincolnshire in April May if your still interested? Kind regards Danny

[@UrbanPlumbers]

yes, got your email, let me know when you are ready

[@j.b.boilerservices6491]

Nice workmanship, nice to see! Only point on here is your use of a normally open zone valve on an unvented cylinder 🙁. Part G of the building regs 3.31states “motorised valve, the device should operate to interrupt the supply of energy if the electrical power is disconnected”. This is why a normally closed valve is always supplied with the cylinder. This is one of the 3 major safety devices on unvented cylinders.

[@UrbanPlumbers]

NO is on heating!

[@SNORKYMEDIA]

2:55 the state of that bath!

[@UrbanPlumbers]

Decorators. Doesn’t matter, bathroom gets redone in next few weeks

[@johndevlin980]

Another great video and explanation, brilliant 👍

[@UrbanPlumbers]

Many thanks!

[@nevillethumbcatch5691]

I wouldnt fit another telford cylinder. Theyre the only cylinder that requires you to fit a 22mm gate valve across the coil. If youdont fit it it you get insane vibrations through the house as the cylinder heats up. Its due to them using a flexible coil in the cylinnder rather than a hard pipe.

[@UrbanPlumbers]

I actually never had a problem with the coil. All my gate valves are fully shut on those cylinders and only installed in case I may need them.

[@nevillethumbcatch5691]

@@UrbanPlumbers i never knew it was an issue till i fitted one in my own house and ended up with the coil noise buzzing tthrough the house. Ive since fitted these in other propertys and always had to adjust the gate valve to silence the noise. I stick to installing joule cylinders now. Im surprised to hear you havent had an issue with it!

[@UrbanPlumbers]

And there are other cylinders that I come across that also require a gate valve due to resonance

[@UrbanPlumbers]

@@nevillethumbcatch5691 yes I like joule but couldn’t get one as this was a very short notice job

[@nevillethumbcatch5691]

@@UrbanPlumbers not come across any other cylinders ive had this issue with. Im assuming the ones you have, have also had the flexi pioe used for the coil?

[@Skydiver1000]

So you have used the normally open 2 port valve on the heat feed to the unvented cylinder? Or did I hear that incorrectly. UK regs require the valve to close if there is any kind of input temperature run away via the over temp trip cutting the power and then the valve closes on its own.

[@UrbanPlumbers]

The other way round. Normally open is on CH

[@funcle8572]

No valve on the air vent in case the air vent fails as they eventually do?

[@UrbanPlumbers]

Air vents are not meant to be left open. That’s why the fail.

[@Pucwyczes]

what is max soft copper pipe size you can get over there? Looks like 28mm od on video ?

[@UrbanPlumbers]

108mm

[@stevenkirton6887]

great video, where do you buy your dust sheets from.

[@BigAL0074]

A 40kwatt combi boiler will easy run two showers, mine does, not sure it would fit in that cupboard though :)

[@scottweisel3640]

What is the brand and model number of the purge cart you used?

[@jazzblue5197]

Hi, Great pipe work for sure. Do you then insulate the pipework?

[@UrbanPlumbers]

yes.

[@ChiefBrianIrons]

Hi I was wondering if you could help me. I have a choice between the WB Greenstar i system boiler 18 kW, sadly 4000 is not going to release to Irish until next year or the viessmann 100 w 19kw. Both offer 10 years warranty but WB customer service is way better and respond lot faster i.e within two days than viessmann since they use third party to manage boiler issues. I know that build quality isn't the greatest on WB compare to viessmann. I am really struggling to decide which one plus need to make decisions fast as old boiler is dead. The gas installers told me it way easier to deal with WB compare to other companies that why they recommend WB also they told if you regularly service it they cause no real major issues but saying that looks it base on opinions as well.

[@UrbanPlumbers]

I would go with viessman on hot water priorityset up.

[@sm2907]

Thermal stores are good alternatives to moving unvented cylinders when faced with D2 pipework issues; they don't have D2 pipework, and still provide mains hot water. Is there a reason why this wasn't considered?

[@Saaj2]

Not a heating engineer, what is D2 pipework? I agree, thermal stores are also great from an efficiency point of view. Also you get the good flow rate of an unvented cylinder and the unlimited hot water of a combi.

[@UrbanPlumbers]

They wanted under the stairs space empty. Also, heat stores are more expensive.

[@davem4131]

Never really thought about offering intragas as an option to customers. I guess because it’s not a well m I’m own brand .but they look decent

[@UrbanPlumbers]

Great boilers, combis will need scale protection though and not those little silver whatsits either!

[@arturassmirnovas2375]

Great video, I’ve noticed on some jobs you solder and on another you using press fit. Do you give the customer the option or you decide what to use where? I’m asking because of the cost is different. Thanks

[@UrbanPlumbers]

No, same price. Press is more expensive but much quicker so it works out about the same.

[@metallitech]

Isn't this enough for two showers? : Viesmann 200W: max power 35kW, max flow rate 14.3 l/min .

[@UrbanPlumbers]

You only get 7l per shower at 35c temp rise and you would have to upgrade the gas in my case to 28mm I am getting 20l/min at 45c rise so way better got water performance on a boiler that costs half of what 200w

[@paraflop]

How do you change the bottom immersion heater element if it fails? It doesn’t look like there’s enough room.

[@UrbanPlumbers]

It may not look like it, but there is enough space. It is a relatively short element and once undone you can move it to the side. I made sure that it was possible by trying it before final position of the cylinder was set. However to take it out you still need to drain the cylinder, so undoing 4 compression fittings and twisting cylinder to the side is also relatively easy.

[@tommytanswell4187]

What's the base like on them headphones 🎧 🤔 😆

[@UrbanPlumbers]

Very muted

[@Sam.147]

Great video! Just curious, why did you use a different type of two port valve for the heating?

[@UrbanPlumbers]

The valve for heating is normally open - so when there is heating demand both valves are in resting position. When there is hot water demand both valves get energised. Heating valve closes, hot water valve opens. Hot water fires at much higher output to quickly reheat the cylinder. Heating works with load compensation and low modulation. If both valves were open you would lose a lot of efficiency on CH.

[@igorchuchro4991]

I always carry air compressor for bigger installs to check for leaks before I put water in but I don’t do as many installs so never had need of buying press gun yet. Would you recommend it ?

[@UrbanPlumbers]

press fit is great. Never use a compressor to check for leaks. Air compresses easily and if a fitting ever blows off a pipe it can kill you.

[@Lutonman2010]

Great real world install video. 👍🏻👍🏻👍🏻👍🏻

[@UrbanPlumbers]

Thank you mate !

[@foolishcreations2259]

I’m from Toronto canada and was trying to wrap my head around your terminology but I now realize your tankless hot water tank does “space heating/Radiant” and you have high temp heating going into your domestic heat exchanger up stairs to give them the water for showers etc. I find it crazy that these are always in kitchens in Europe. I guess most of these houses do not have basements like we do. That is usually where all residential heating/mechanical equipment is located.

[@UrbanPlumbers]

Basement installation are very tricky here. For starters, most basement do not have drainage and all condensate from condensing boiler has to be pumped. Also, cylinders have a safety valves to realise boiling water in case of overheating or high pressure - this also has to be pumped. Pumps for those cylinders are very expensive, as they have to be able to handle very hot water (boiling) in a continuous fashion.

[@foolishcreations2259]

@@UrbanPlumbers all of our sanitary and storm drains exit in our basement slabs so ideally there would be a floor drain in the mechanical room. For the acidic condensate we just put a neutralizer on them and right down the floor drain. As far as safety relief valves are concerned those get hard piped to the concrete floor min 6” min 12” maximum. If your Temp and pressure relief or pressure relief valve is always dumping you’ve got some issues lol. I’m assuming your sanitary exits on the main floor which is why you are referring to sanitary pumps.

[@millomweb]

Why go for 2 zone valves instead of a diverter valve ? What was the third pipe with no valve on, going to ?

[@UrbanPlumbers]

You could use diverter for sure. In this design however the valves are in the resting position most of the time, so it is quite reliable. 3rd pipe goes to an auto bypass.

[@millomweb]

@@UrbanPlumbers It's the first I've heard of a NO zone valve ! When we moved in here, only one zone valve, DHW was a permanent circuit in half inch pipe. That's 15mm to you :) I've 5 zones now. Only one with TRVs - so the ABV is only on the TRV zone. I'd rather not have it but Veissmann boiler is not happy with low flows !

[@user-bu9nb8wr6e]

Why does it need a power flush then? If that boiler hasn't been serviced that magnaclean is pretty clean. You only need to do a powerflush on a system if the system is showing signs of needing it. Taking a magnaclean apart and showing how dirty it is is not a sign of sludge build up. The system will need a clean if the radiators are cold in the middle at the bottom or if sludge is seen when draining the system from the bottom drain off. Just having a dirty magnetic filter means that the filter is doing its job.

[@UrbanPlumbers]

Magan clean is pretty clean? You are having a laugh, mate. The system was filthy as hell and needed a full flush 100%.

[@JasperJanssen]

Why use two separate NO/NC valves on a T in parallel instead of a three way valve that selects between two pipes?

[@UrbanPlumbers]

You can use a 3 port with NC position towards the cylinder. It is called a D plan. There is really not much difference between the 2, and they are wired in almost identical way. Just whatever your preference is or whatever type of valve you have available. My next video will have a similar set-up using 3 port. I would use 3 port when there is more than 1 heating zone.

[@lk291139]

Hello great vid. Got question about adding chemicals to the system. Can you mix different brands ? I want to add to my 3 year old combi boiler system but I don't know brand that was used earlier. Also is there any limitations of how much chemical can you use in system? Great work thanks

[@UrbanPlumbers]

I don’t know regarding mixing chemicals.

[@user-te1le7ck6b]

Best tl drain down and refill mate stick to fernox as they are quality but cheap stuff lile senital is also fine

[@sip5574]

There have been tests done that prove mixing inhibitors can accelerate corrosion in heating systems. As G mentions best to drain it down and refill with a fresh inhibitor. I’d only use Fernox, Adey or Sentinel. I wouldn’t bother with a brand different than that. There are other ways to treat system water, but it gets quite in depth. If your interested check out de-mineralising based on a German standard VDI 2035, it’s quite interesting.

[@mistermikeanson]

That magnaclean was well choked!! Love your neat pipework. Those crimp fittings are really good, but probably have to be cut off if you need to change pipe layout?

[@alemgas]

Same as soldered fittings

[@Man_v_Cars]

Watched this as I struggle to keep my Ideal Isar HE30 working. 🤦🏻‍♂️ 16 years old and a nightmare after the warranty ran out.

[@tonydization]

Time to replace, Isars had a terrible rep so you've done well to keep it going so long.

[@UrbanPlumbers]

16 years with that boiler is a real achievement. Do yourself a favour and get it replaced.

[@Man_v_Cars]

@@UrbanPlumbers If only I could afford to. 🤷🏻‍♂️

[@mgbroadsterJ]

If you aren't fitting a combi ,do you always do a hot water priority system ?

[@UrbanPlumbers]

yes, never fit S plans, they are not very good.

[@antoinec1066]

Great video. I wish I could have opentherm but this seems difficult with a Worcester green star boiler even with evohome….

[@UrbanPlumbers]

You can get a module for a worcester that will allow OT

[@antoinec1066]

@@UrbanPlumbers thanks for your response. I know but people who have used them have removed them afterward telling that this does not work but I am unsure if they were using the Worcester’s modules which are recent it seems. I need to do more digging into this question.

[@UrbanPlumbers]

@maximusg88 it also works with boiler that support PDHW but only with 1 heating zone.

[@Chequr_Prostate]

Should the boiler be bonded to earth and cross bonded?

[@UrbanPlumbers]

no, there is no requirement to do that