HOW TO GAS RATE (no apps required) using a g4 and u6 meters, also covers the new smart meters TB 112

[@paulgannon3261]

Brilliant. I do remember on a Corgi inspection in the late 80s being asked to input test a boiler by my inspector. When doing the calculation my inspector informed me I should be able to do this in my head. I was a little embarrassed and looked painfully at the inspector who said" 3600 x the calorific value of the gas equals" and whilst doing this reached into his jacket pocket and took out his calculator, looked at me and said " gotcha". Real people doing what we do

[@rayc1503]

Reg 26.9 is pretty damn important if you cover as many aspects of it as you can you'll sleep easy. As an engineer it's in your court to make sure the appliance is operating safely and within manufacturers given tolerances. Gas rating only takes a few moments and the outcome can show you if the appliance is under/over gassed. It really isn't that difficult to calculate. I've noticed many engineers using the apps it maybe a little quicker. However come the time of your re-assement you'll struggle. Seems to be the case for ventilation requirements and pipe sizing too. Don't get stuck in your lazy ways people 😜

[@leetaaprayzaanio4751]

Thanks for this vid, very informative. Got my ACS resits coming up and have always used apps so need to brush up on my old school gas rating, this video was ideal for this.

[@mj0n4id36]

Awesome. The steps and calculations is now nailed in my head and I’m unlikely to forget. Really easy to follow and makes perfect sense. I have only really come across non smart g4 and u6 meters onsite so I found it really useful because you gave us the chance to see the different types of smart meters and how to work them for gas rating. Thanks Derek 👍🏻 Asian Jon. Training

[@Skeletoncrew46and2]

From your videos,I'm learning loads, i realise how much i don't know.! Really well explained and nice little bits of knowledge of why it is we do such test and that the gas rate is not the be and end all. Keep it up Tom!

[@gladyslips1557]

I have got an Answer to my own question. 1 Cubic meter = 10.55 kWh approximately. Please correct me if I'm off course. Thanks

[@mohammedchoudhary6953]

Fantastic video

[@andrewpedder3974]

great vids..however on smart meter with buttons no need, run appliance max load ie hot water press 0 button 4 times and itl calculate gas rate for you!

[@liborjelinek2070]

Hi Derek, when you gas ratings combi boiler in hot water do you put the temperature on maximum with one or more tap running because sometimes the water flow is problem, thanks

[@jasongittoes7299]

Many thanks for the video on smart meters it’s a real help while doing my portfolio

[@yussufalabi5316]

Am lucky to come across your video thanks bro, Yussuf

[@meganjb10]

Why complicate the whole thing people want to know how many units you have used on your meter how much is a unit ,

[@leehurst3006]

Using 1.1 instead of 1.11 wouldn’t make you a full 1% out.

[@tariqmahmood3552]

Thanks very good video information also good knowledge fo me thanks ag

[@gladyslips1557]

Good day, please could you help me answer this question, my gas meter is an old ACTARIS, it has an "8 figure display" '3 in the red' and '5 regular. If my meter reads :| 50000/000 Then it goes up to. 50001/000 Is that '1kwh' In the meantime I'll keep watching your Video to see if I can understand it. I have mental health issues as a result of seizures and find it very difficult to grasp things. Thanks very much.

[@tomkatgastraining]

Correct that is 1 kw/ hr

[@MrBestEditing]

Great Video Pal 👍🏻 But Aren’t you suppose to Gas Rate It on 3 Bigger Burners ??

[@tomkatgastraining]

MurtyBurty no that’s working pressure at the meter 👍🏻

[@chrisjones4500]

👍👍

[@bilalm18]

👍🏼

[@patricktuite9284]

👍

[@dts9770]

Dave Thompson

[@AnEyeScream]

Thank you, Nikola Ditsov

[@all4heatinggaslimited40]

Thank you Derek

[@CommercialGasEngineerVideos]

How this guy hasn't got 100 to 500 thousand subscribers confuses me. This is gold dust.

[@saidhissoufi277]

Hi Derek you multiplied 0.3 by 38.7 CV of gas but you mentioned in the beginning cv of gas is 38.76 is it OK or was it a slip of the pen thanks

[@gasman1473]

Nice D..just wandering you say theres no book to give this phantom figure of allowance..my assessor says is now the standard 5-10% who's right..great vids by t way..

[@johnburns4017]

The smart meter. It knows when the maintap (ECV) is turned off - *_0_* or *_1._* So the meter records gas pressures?

[@arianxhebraj6107]

Sir,to gas rate a cooker do we have to light 3 rings of the hob up or just the largest one..Thank you and keep up with the great video..

[@tomkatgastraining]

ARIAN XHEBRAJ 3 biggest rings is working pressure at the meter for a cooker, to gas rate the cooker you do all rings oven and grill separately and the add them together for the total

[@arianxhebraj6107]

@@tomkatgastraining Thank you very much and i do really mean it..

[@pshemax]

Great video, Thanks! and here is another way of gas rating: the difference in reading ex. 0.095 x 3600 (sec in 1h) x 10.77 (Cv of gas) divided by 120 sec (test time) = 30.69kW Gross. / 1.11= 27.65.

[@aliebrahimi974]

Ali👌👌👍👍👍

[@kevincharles6231]

10 years working offshore and feel like a career change. This brings me back to my college days hopefully resit this again. Brilliant video.

[@georgereynolds6497]

Another good video, your other videos really helped me pass my ACS initial assessment exams 2 weeks ago

[@tomkatgastraining]

GEORGE REYNOLDS well done on passing your ACS and thanks for watching cheers

[@michaelrose5040]

Brilliant as usual, so helpful for me with the ACS exam getting nearer Cheers Derek

[@tomkatgastraining]

Michael Rose good luck with your exams let me know how you do 👍🏻

[@piotrek5341]

why is there 0.01m2 i think should be 0.01m3

[@tomkatgastraining]

Yeh I think you can see it is a small mistake as I correct it later on but thanks for pointing it out

[@piotrmarchwacki3414]

Very good video. Fantastic explanation. Thanks Derek. And you know, as usual - Polish Peter 😆

[@danielcarragher6628]

Daniel carragher

[@hyuseinkyoybashiev4753]

Great videos, every one of them. As a trainee would like to say - Thanks a lot for your time and effort Sir! Just a little question though - at 12:38 you have noted 2.58x38.7 = 100.0 MJ per cubic meter, I believe you meant 100.00 MJ per hour at this rate - 2,58 cubic meters per hour, am I right? As the calorific value is already given - 38.7 MJ per cubic meter? And the numbers always differ slightly between different centres and books. Which, unfortunately is a bit confusing! I have been thought that the calorific value is 38.6, which changes slightly the calculations!... Anyways, also would like to say thanks for your time reading this comment in advance. Regards.

[@chrisjones4500]

Thanks Derek..

[@dwhyte3392]

Press ‘0’ 4 times on the Liberty, the “load” is your heat input in kw 👍

[@shetuhamhomesandproperties5759]

Great video

[@secondchance4498]

Chris taylor

[@jon-paulward4580]

Jon-Paul Ward

[@terenceclark4441]

Thx found this section. Really appreciate the time you have taken to put these together. It's been a great help. Plz keep these coming 🙏

[@suewarrington8155]

👍Thank you

[@borninwashingmachine4582]

sorry Tom, your result from reading is in m2 instead m3, why your result is in square meter?

[@mikefahy4960]

Mike Fahy

[@IANRPARKER]

You must have been asked before but do meters malfunction? My m3 consumption has gone up by as much as x4 times. I turned off the smart meter for a day and it still logged 17m3. It uses TOF measurement but what could go wrong? And how can it fix itself?

[@tomkatgastraining]

If you are worried your meter has malfunctioned get in touch with your gas supplier they will sort it for you because the meter belongs to the supplier.

[@dvsnbanda]

Davison here..doing my gas. Thank you for the videos

[@alirezajamshidyfard8184]

Thanks 👍

[@andrewevans9514]

Very helpful recap and useful with all the different so called smart ! Meters out there Cheers!!!

[@lmcm7311]

Great training videos as always from Tomkat 👍🏻

[@mikejohnson3789]

Your videos are so informative. They make life so much easier to taking the assessment and gives me confidence in passing. Thank you very much. Michael Johnson.

[@bhartidasani5358]

Derick could you explain to an interested not gas registered person ..... Why do you equate 3.6 MJ in 1Kw !!! I fully understand a cu mtr of gas contains this amount of energy ( 38,760,000) joules . A watt is a rate of work not joules , a Kwatt X hour is the amount of energy ( 1j = 1watt X 1 second ) therefore I understand that 1cu mtr of gas equates to 38,760,000 watt X seconds , or 38,760 Kwatt X seconds there must be a time component somewhere...please what am I missing

[@tomkatgastraining]

When we gas rate we have to follow a standard. The appliance manufacturers and gas engineers have to follow the same standards. We gas rate for 2 minutes to give us a m3 figure for 2 minutes so we x that by 30 to give us m3/hr but we need kw so we x by the Cv of gas which is an average of the country and a gross figure of 38.76 but we just use 38.7 we then divide this figure by 3.6 because again this is an average and a standard of 3.6 mega joules in a kw and then finally because it’s gross and we need net we decide by 1.11 for Nat gas.

[@rohitmadhar5181]

Please Add a video about pipe sizing, combustion,

[@geoffreyhammock7082]

I find the content and the way that you get the content across is great Geoff

[@manjsingh6500]

Thanks. Great video. Very informative

[@shakeit5642]

Stanimir popov

[@djhvideo]

Minor error. Calorific value in megajoules is a unit of energy. A kilowatt is a unit of power. A kilowatt-hour is a unit of energy. Therefore the line on your board should read "MJ = 3.6MJ in 1 KWh" ie a Kilowatt-hour equals 3.6 megajoules. Also technically you should quote the calorific value is at the nominal domestic appliance pressure of 22 millibars.

[@tomkatgastraining]

djhvideo thanks for your comment some things are just better off not said thanks for watching cheers

[@jasonbetts9249]

good videos mate, a good refresher, confident instruction. Gas Safe TB141 Acceptable tolerances (+5% -10%) might be worth a read

[@tomkatgastraining]

Jason Betts we use these tolerances but there is nothing in any manufacturers instructions or regulations that mentioned these figures. Thanks for watching cheers

[@bestdeals2978]

Best video out there explains how to rate on nearly all meters thanks 🙏🏾

[@darrenhoffman3649]

shud you gas rate the two biggest appliances to gether to find out if you have incomplete Combustion say if you had open flue applance ?

[@tomkatgastraining]

No you gas rate appliances separately

[@darrenhoffman3649]

even if you got two boilers on system and think the pipework might be inapropret

[@tomkatgastraining]

@@darrenhoffman3649 you do inlet pressure at the appliances if you think your gas pipe is undersized not gas rate

[@andrewthomas332]

Excellent Video Derek very imformative. Andy T

[@mohammednazir8307]

Really good video - very helpful and really well explained 😁

[@alexandrosgkikas8576]

There is something I have to say. You are the best 👌

[@QuarryGasOxford]

Love this-great lesson, well presented

[@ashokrawal3820]

Hello Sir Very good lesson for everyone. Thank you very much

[@chohanchohan8208]

Wicked Video...thanks so much

[@jeffburr7426]

very good video from ex gas enginner retired

[@aaronjoyce1980]

Good vid Derek. Aaron Joyce

[@willlomas2725]

love the formula cheers Derek.

[@cidosales9513]

Derek thank so much for your videos, I could say what a talent my friend You the best Keep the good work

[@tomkatgastraining]

Cheers 😁

[@hdhanji8006]

Thanks for covering the latest smart meters Derek 😃 Hussain

[@timeyre9985]

gas rating difficult enough, Real Problem is the smart meters

[@tomkatgastraining]

Why is gas rating difficult ?

[@samir0007085]

ThAnk you sir ur amazing never gone beat you sir

[@lukeshriane2496]

Luke Shriane

[@len5509]

Thanks resit in a couple of months need all the refreshment available very helpful.

[@tomkatgastraining]

Good luck with the exams 👍🏻

[@lostinthoughtscalminsilenc8167]

Do you need only the appliance you are testing on? So if you have 2 appliances you would do two tests?

[@tomkatgastraining]

Yes you do need to do them independently

[@kasimrehman2918]

Hi Derek, will gas rates on smart meters be included in the ACS?

[@tomkatgastraining]

Only questions not practical with us can’t say for every centre

[@Mrbobwaters]

Please can you do a tightness test on a medium pressure U16 meter? Would be really appreciated as needed for my end point assessment coming up! Many thanks👍

[@tomkatgastraining]

It’s on the cards to do thanks for watching cheers

[@martinb6079]

its a open book exam. i dont go to every service and use this calculation. i just use my viper manual and ill be taking it into my resit

[@tomkatgastraining]

Do you not think a gas engineer should be able to gas rate without using books? Would you use your books to help you carry out a tightness test?. When your under a reassessment your assessor would expect you to do the fundamentals of being a gas engineer without books so tightness test, purging, gas rating and ventilation would come under that. Good luck in your assessment and thanks for watching cheers

[@user-nm7sj7ns6l]

All best Tamkat💙🌹👏

[@danielevans4244]

Thanks Tom make it look so easy

[@fruitbread3250]

Is gas rate and heat input two different things

[@tomkatgastraining]

The gas rate tells you the heat input or are you going to tell me something different

[@fruitbread3250]

@@tomkatgastraining ok I was a bit confused with my book there. Thanks so much.

[@enowtakowdaniel5290]

Hell Derick, Thanks a lot for this, pls i have one question, Why do we multiply the meter index reading by 30 instead of 60?

[@tomkatgastraining]

Because we time it for 2 minutes and we want m3 per hour so 2x30= 60 so m3 per hour

[@enowtakowdaniel5290]

@@tomkatgastraining I get t know, there are 3600sec in an hour and we have time if for 2min which is also 120seconds. Therefore, 3600sec/120sec = 30 in m3 per hour. Thanks Derick

[@ceejay911do2]

Amazing video again mate 👍👌Connor

[@salvatorpalalej8754]

Thanks master

[@rayhurrell1722]

Iim training and this was extremely helpful

[@rayhurrell1722]

Ray hurrell

[@richardhodgson7443]

Hi, very quick question as I am a trainee. Looking at your calculation can I ask why multiply by 30 and not 36 for M3/hour? once we deduct first reading by second reading, thanks. Rich.

[@tomkatgastraining]

Because your reading is over 2 minutes and not an hour so 2 x30= 60 minutes so m3/ hr

[@richardhodgson7443]

Tomkat Gas Training yes of course.now it makes sense, sorry and thanks 🙏

[@michaelrose5040]

Thanks Derek With do

[@k.l7524]

First Class Derek, Thank you

[@jordansiddall6235]

Jordan 👍🏻

[@wrappedldn2545]

Have a look at TB 141 Derek

[@sxphie5440]

👍

[@jasongittoes7299]

Afternoon derek are all the smart meters purged in 2dm2 ?

[@tomkatgastraining]

No mate it still depends on the meter

[@nazirmohammed7285]

Excellent 👌

[@smellslikethinice1107]

Thank You

[@ziaminhas9564]

Well explained

[@craigstephens61]

caLoRific!

[@ldosanjh2070]

Another great video Derek. Keep up the good work. If there is no info on whether the gas rate in MI is in gross or net, should we assume gross or should we assume net?

[@tomkatgastraining]

L Dosanjh if the appliance was manufactured before 2000 it would normally be a gross figure but after 2000 it should be net figure

[@ldosanjh2070]

Thanks mate 👍🏽

[@1Monaghan]

I have been watching these training videos over and over for about 3 hours every couple of nights. I hope the initial ACS is all open book just incase i forget anything. Going to get back to the viper book tomorrow for unsafe situations next and then watch the video on here. Sooo much information to try and memorise.

[@tomkatgastraining]

It is all open book for the logic course. Good luck and thanks for watching cheers

[@mindspirit179]

Is there any help available with the cost of the course ?

[@tomkatgastraining]

@@mindspirit179 there is no government help through our course but we do a payment plan for our trainees over 12 months.

[@letsfixit782]

Hi. So if the badge says 25kw on my boiler is it gross or net? I thought if it doesn't say anything we need to take it as gross

[@tomkatgastraining]

If the boiler was made before 2000 it would be gross after 2000 should be net.

[@letsfixit782]

@@tomkatgastraining Ok thank you. Where can I find this? in MI's ?

[@tomkatgastraining]

@@letsfixit782 the MIs will tell you if it is gross or net if you don’t know the year of manufacture also the data badge will say gross or net

[@tomkatgastraining]

The reason why they say to assume it’s gross is so you don’t undersize the ventilation as a gross vent will be larger than a net vent

[@letsfixit782]

@@tomkatgastraining Thank you for your help.