This is gold. Every single step of the commission process well explained and easy to digest. Thanks for demonstrating how a radiator should be balanced. Found it very informative. Thanks Derek 👍🏻 Asian Jon. Training.

As always, the high standard of teaching. Thank you very much Derek. 👍😀. Polish Peter - trainee at TomKat.

A brilliant video Derek, step by step tutorial on the boiler commissioning, following this video we definitely can't go wrong. Following the PROFESSIONAL.. Nice one.. 👍👍👌😀

Thanks Derek it is a brilliant video and well explained on boiler commissioning, it releases some of the pressure and stress as it has a lot of steps to cover in the process. An excellent video.👍👍😀😀

Another Excellent video Derek.

Thanks that was an excellent informative guide, I picked up some good points that I will add to my commissioning routine

What a great and detailed information about analysing, u r diamond sir!

thanks Derek, always brilliant

Another great video Derek and thanks for allowing me to inform your viewers, who may not be aware, that you can also turn these readings, from the SP620 & DC710, into unique, GPS tagged reports, title them as you wish, collate them into a single Job including creating an LGSR and e-mail them all out, in one go, to multiple recipients, at no extra cost, all part of the FREE TPI View app for Android or Apple Phones or Tablets. Cheers!!

Wow brilliant lesson from a brilliant teacher 👍, I was trained in plumbing about 17 years ago at Tameside college by derek and Matt absolutely brilliant teachers I honestly finished my course knowing absolutely everything about plumbing thank you 👍, just to compare in the last 10 years I have had about 12 different” fully qualified nvq2 plumbers“ that I had work alongside me just after they qualified to show them the ropes ? (Nobody shown me the ropes when I qualified) and they are all from different colleges and that I also ended up having to retrain them myself from scratch as they had no clue in plumbing 😶😶honestly not one of them knew even the basics of stuff like what’s the difference between a bs1212 part 1 and 2 🤨 🤣🤣 . Any way really glad your still teaching derek good on you lad 👍👍, Chris

Another quality video mate

Great video Very well explained Commissioning piece of cake after watching this video

Brilliant video again. 🙂

Brilliant Derek 👍

Quality video TC 👍

Great lesson video Thank you very much sir 🙏🙏

I bet its been years since you done a propper "Drop Test?" lol @15.01, i liked your close up, of your Wera screwdriver. Very nice bit of kit.

Thanx Derek great video

Good video to watch before I go Worcester course

Thanks Derek

Great stuff👍👍

Really useful video

Good video thanks

Thomas Bradwell Thanks Derek

Very helpful video Derek 😁 nice1 👍 Aaron trainee

Hi amazing detailed work ..can you advise what device you used for the tests

Very helpfull

derek top class training, your a legend but do you want me to buy you a shaver just let me know haha

Great video mate, what analyser are you using?

👍👍👍Del

@Tomkat Gas Training Hi Derek, excellent videos as normal but whilst watching your video - have you a typo at 1:24> where you are discussing the let by results, as you were discussing the 0.04mb increase start to finish on your test output as your wording on the screen in yellow then shows 0.025 to two decimal places. All the best √

How come you need to do a gas Rate if you have done a working pressure on DHW and CH? Would it not be one or the other?

Hi Tom is this generally the same process for every combi boiler? Thank you

Can you not purge the gas then do the tightness test that would make more sense to me ?

You can actually put the boiler in max hot water in service mode with them Aristons.

As a meter fitter we are not allowed to use digital manometers. But i have no idea why.

👍🏼

👍 Naveed

D Thompson. 👍🏻

Great videos.👍 What app are you using please.

Tomkat 👍🏻

👍🏿👍🏿

CH 👍

👍 Chris tanker

Callum Collins - Tomkat Training

chris Taylor

Luke Shriane

Natnael

steve ward

Love your videos. You got a little confused on your radiator dt's. The faster the flow through a radiator the greater the output for any given mean water temperature. Measuring dt is a dark art. The dt will change as the external temperature changes if flow is constant. If you are on face book it would be great to have you join us on the heating design forum. facebook.com/groups/1283670701667577/?ref=share

Umair safdar

Mike Fahy

tomkat

The "rain fuel" ad with this clip is a con or what?

ECV falls to on position! Tsk tsk tsk!!!

Brilliant Derek 👍