Really good video. When I was an apprentice with SEGAS in 1968, we we're taught that it was a circulator and not a pump lol😂

Thanks for your wisdom derek well explained! Extra videos would be good about pump sizing+ setting pump speeds eg123 automatic bypass set up precedure + w plan + c plan etc 👍🏻

Nice one Derick..thanks for your efforts and sharing your experience 🙏💯

Excellent video Derek very well explained

Thanks Derek great video 👍

Great vid as usual

Hi Derek very good as usual, have seen some great one, ie the vent pipe going up nearly to the top off the roof and back down😂 or the vent below the tank water level, a good video would be noise in central heating, ie clicking , rushing, banging , pump speed to high or low

Thanks again for your ever great videos. Based on the comments, please make a video about how to set correct speed for the pump and I found a Wilo pump a customer wanted to replace and found setting up the correct settings very hard.

Many thanks Derek...yet again another cracking video!! 👍 a chance you could do something on closed couple tees on splan with underfloor heating pump??? Many thanks again 🙂

Another great tutorial. Looking at the comments, a common theme is what pump speed setting, how to set ABV up in the real world, balancing etc.If you are fitting a new modulating CH pump as opposed to an old fixed speed (with speed 3 settings) do you set up your ABV differently?. Thanks again.Keep em comin👍

Well one hundred homes , was always a building site a hundred ohms is a measure of electrical resistance . LOL . Nice video , I live in a bungalow the boiler is on the garage wall and the pump is in the airing cupboard ? vent off the boiler straight to the EXPANSION TANK IN THE ROOF . Cold feed direct to the boiler , 🤔

I was taught 35 years ago. 22mm pipe from flow all the way up and over the fe. Tank. Then 22mm cold feed down and no further than 150mm apart. But bring it back down to middle of airing cupboard. There you can put the pump on what we call a. H. Pump pulls down on cold feed. Loads of systems I see are piped up wrong. And pumps left on 3. Which pump over and draw air in.

Please could you do some videos on lpg? Tightness testing etc 👍

Thanks

Very nice. I have installed a sealed system but vaillant pure heat only has changed the flow and return. Flow is normally left. Now the system is not working? Do I have to change flow and return, please? (I know punp is pushing the other way around, but in heat only boilers, it shouldn't matter. Please show some light on it. (Flow and retun on heat only boilers doesnit matter) Kind regards Indy Singh

Fountain of knowledge here. Will you ever do wiring videos? Combis / S plan / y plan / hives / nests. Multiple zones. Wiring & fault finding is the biggest enemy of gas engineers.

Good one Del, may teach these young Pups & Combi slingers a thing or two. Perhaps I suggest a video going more into system design in relation to circulation pumps. Index Circuits etc etc.

Brillant video Derek, would you recommend same principle with solid fuel stove on a 2 pipe syestem as in 1 flow and 1 return. Thanks Donal.

Will a combi system boiler 24k. Work a 2 bed terraced and a loft bed room. Thank you

👍👍👍👍👍👍

British Gas seem to have a procedure where they remove the overflow and allow the expansion through the feed pipe. Is this a good idea and and what problems can it cause.

Do you remember SMC Admiral and Cadet pumps

Tom can you do a video on zone value on a combination boiler

The problem with these Alpha “ smart “ pumps on old large systems that may be a bit sludged up is that it will sense the resistance and decrease in power leaving the furthest rads Luke warm or cold , that’s why I will always fit a 25-60 130 3 speed as a replacement on these bigger 3 foor type systems otherwise I know that I will get the dreaded phone call to tell me some rads are cold..... 👍

Excellent advice Tom, I find alot of old s plan systems with no automatic bypass, the customer gets a new boiler installed and wonders why it always overheats, I go to alot of jobs where the pump has been replaced and set at speed 3 or speed 1 and further issues arise, radiators constantly needing to be bled or overflow pipes dripping are a sure sign of a badly installed pump or other issues such as no bypass or some customers get a trv fitted to the bypass rad not knowing the true purpose of that rads use, sludged up systems is my biggest problem when trying to explain to a customer that they might need a very expensive power flush, I go to alot of old open vented system that have been converted to a pressurised system and new rads have been installed but one or two rads never heat up, usually down to the balancing of the system, can you provide a video on how to properly balance different systems, thanks Tom, keep the videos coming mate!… 👍👍👍👍

16:30 on a Y plan system, you will need an auto by-pass if all the rads have TRV's fitted. (I have seen a few systems like that - all TRV/smart TRV). good vid tho, keep up the good work.

With regards to an automatic bypass using an Erp pump will the modulating pump have enough oomph to open the bypass at the end of the heating cycle being that the pump will have lowered it's speed?

Hello thank you sir for good explian but i would like if your have any online teaching class attending about that if possible make another vedeio about underfloor heating system how that pump work thank you

Could I be cheeky and ask for a video on C Plan systems?

Well explained and lots of detail. I would take issue with you saying water in the pump lubricates it . Water has no lubrication qualities whatsoever.

I find modern pumps dont work aswell on very old systems. Also i hate how most have done away with the central screwpoint, u cant ram a screwdriver in anymore

why are you demonstrating a outdated pump and not the new low energy pump