Gas rating using a g4 meter, ACS REVISION IN LESS THAN 10 MINUTES (hopefully) part 4 how to gas rate

[@s.l669]

Great revision video! Been doing gas for about 8yrs now, and yes it's easy to get lazy and just use the apps. always good to jog the memory and go back to basics.

[@MussoliniLondon]

What apps do you use

[@kelvinjones1995]

Just a quick text to Thank You Derek- "an old dog" can learn new tricks- with you help just passed my initial ACS.

[@tomkatgastraining]

Congratulations 👍🏻

[@Loonzartist]

You make learning easy but I gas rate a different way don’t worry it’s not off my phone .086x3600divide120=2.58 2.58x38.76divide3.6=27.77 27.77divide1.11=25.01 gross to net I love this way because it’s easier and you come up with the same answer

[@mohammednadeem7274]

Great video Derek, well done bang on under 10 minutes video.. 👍👍😀🎉

[@viran8121]

For someone like me...I like to know where every value and number comes from or how it is derived. You have great explanations and vids 💪🏾💪🏾

[@lmcm7311]

A really useful guild set out by Derek at Tomkat for anyone training to go into the Gas Industry or for those who are coming up to re-assessment

[@ashokrawal3820]

Hello Sir Your videos are always great knowledgeable., it's really help for everyone. Thank you very much for sharing. Regards 🙏🙏

[@piotrmarchwacki3414]

Wow. You’ve done it in less than 10min. Well done Derek. 😃👍

[@salmansarwar9977]

I must say you are a big help thank you so much for sharing knowledge

[@hafizimran6021]

Thanks Derek making informative video

[@jasongittoes7299]

Thanks for the video it’s a good reference to have before you go on a portfolio day

[@mickx09]

Hiya great vid, another way and much easier is 0.197 minus O.111 = 0.086 x 321 = 27.60 kw gross then usual divide by 1.11 works every time,

[@aaronjoyce1980]

Thanks for the vid Derek 👍 just watched 😁

[@NeilRidley1]

I’m in Channel Islands and have to go to U.K. mainland to do ACS, it’s a pain as our mains gas is radically different and so none of the figures are relevant to my daily work, 26.7MJ/m3 13.75mb operating pressure, relative density of 1.21 Lel-Hel 4-40%

[@rivkiroyde4362]

Thanks Derek great video 👍🙏

[@marcinmasalski4183]

Marcin Masalski Great video👍

[@terenceclark4441]

Love you gas rating videos, I did use the a pen and paper method until the apps came out . So great to get a reminder. But is it possible for you to show the different type of meters where you need to push buttons to get a reading on them for fingers to do you gas rate. Thx

[@tomkatgastraining]

I have already done one check out the channel

[@terenceclark4441]

@@tomkatgastraining . Many thx for quick reply.

[@plumbingheatingandgas8545]

Great video Derek help alot specially for beginners can you pls do short version videon on ventilation, fluesany thanks

[@tomkatgastraining]

Coming soon

[@manxago]

Hi Derek, first of all I would like to say all your videos I find highly educational and very helpful. You doing a great job. This my really fist comment after I have been watching many time your video. I have one very important question. I know to how to do the gas in all the types of the meters, the most difficult I find is the one you have to press 3 times 9, the problem I have is when I do gas rate is the time it takes. When I do gas rates if it is gas hob I turn all the rings and if it is free standing I turn the grill and oven and I compare with the total that is displayed on data badge. Even with one gas rate for the whole cooker I find it time consuming can you imagine If have to do this 6 times (4 x rings + grill + oven) for one appliance that is at list 18 minutes if add one minute between every gas rate. How others gas engineers do the gas safety for two appliance in half hour or how can you apply for job when the company ask you to do 10 to 11 gas safety a day?

[@tomkatgastraining]

You will find the guys doing the 8 to 10 services a day don’t gas rate because as you say it takes too long. They use regulation 26 9 which says heat input or operating pressure or both so they just do operating pressure because it’s quicker. Also mate when you gas rate you should do them independently so you can see the correct rate. Thanks for you comment and try to keep the high standards 👍🏻

[@dvsnbanda]

Davison: I'm starting to understand how to gas rate. Thank you!!

[@Mastergas-r7n]

Question In above calculation what does the 3.6 represent??? Dan n.ireland

[@tomkatgastraining]

There are 3.6 mega joules in a kw

[@Mastergas-r7n]

Topclass

[@Mastergas-r7n]

Question So if an appliance is manufactured after the year 2000, should our final kw per hr gas rate, not already be net value? So on a new combi boiler ie ideal logic it’s on the back net !! So after a rate we still need to use our 1.11 to net the net ??? lol Hope you get me lol

[@tomkatgastraining]

When we gas rate we use the gross calorific value of natural gas and the gross mega joules so that’s why we need to divide by 1.11 to turn it to net so we can then check the results on the data badge. Before 2000 we didn’t need to divide by 1.11 because the gas rate is gross and so was the data badge.

[@hussaingonoo8408]

Another outstanding video Derek, great revision only one thing I got to say the 30 in your equation I thought it was 3600s (there 3600s in an hour) divided by 120s to give you the 30 but apart from that hope to see more short video 👍🏽

[@tomkatgastraining]

You have already done 2 minutes so just x by 30 to = m3/ hr less numbers to remember 👍🏻

[@kevj1964]

Hi Derek another great vid, ive watched some vid's on gas rating and they Gas Rate on High fire service mode rather than running a hot tap. i do what you do run the tap. \Do you do service mode high fire on a system boiler?

[@tomkatgastraining]

No high and low tells you it’s maximum and minimum rates it doesn’t tell you what the boiler is doing . High and low is for flue gas analysing. Remember non condensing boilers don’t have a high and low setting and a lot of old condensing boilers don’t have them either.

[@tommyblackman7119]

Good video Derek, totally understand gas rating from my ACS , I WAS TAUGHT THE SHORTCUT WAY... just a question, what if gas rate is wrong say data badge says 7.8kw for a gas hob, you gas rate hob an only get 5.5kw, but flame picture is fine What would you do then? Pass or fail appliance

[@tomkatgastraining]

You would only fail it if you were getting incomplete combustion or the flame went out if you turned it to low

[@johng4635]

really helpful video to remember

[@richardhodgson7443]

Hi Derek can you do a 10 minute revision video on both flues and also ventilation if that is possible, thanks

[@tomkatgastraining]

3 ventilation videos coming soon

[@Anonymous0-g8m]

Hi, I hope you can clarify one issue, Worcester Bosch 8000 states the appliance needs to be operating for 10mins to measure Gas Rate and to look at the tech specs to get the figure which states. Natural GAS - “Gas flowing maximum rate 10min from lighting” - Unit - 3.2 m3/h - I would assume 3.2 m3/h is the gross figure not net ? I would appreciate if you can clarify thanks.

[@tomkatgastraining]

@@Anonymous0-g8m when you gas rate it’s the gross kw that’s why you decide by 1.11 for the net figure

[@Anonymous0-g8m]

@@tomkatgastraining Really appreciate the fast reply 👍, Just to clarify we are talking about the technical specification provided by manufacture which states gas rate m3/h the KW is in DHW. My understanding from what you are saying any spec provided by manufacturers states in m3/h it’s measured in gross which needs to be converted to net 1.11?

[@tomkatgastraining]

@@Anonymous0-g8m after the year 200 the manufacturers give the reading in net but when we gas rate we have the gross gas rate but turn it into net kw

[@Anonymous0-g8m]

@@tomkatgastraining Thanks much appreciated 👍

[@benregler9872]

I was told on my last reassessment to.... measure gas used in 2 mins x 321 = KW Gross then divide by 1.1 to get Net

[@monikanader9454]

Thanks for useful video👍👍👍

[@chrisjones4500]

Thanks Derek

[@rayhurrell1722]

Ray Hurrell brilliant

[@slendermanRblx]

How about gas rating with an old meter that measures in cubic ft as opposed to cubic m?

[@tomkatgastraining]

Next Monday’s video

[@mj0n4id36]

Brilliant. I’ll stick with learning the full calculation rather than the short cut method. Thanks Derek 👍🏻 Asian Jon. Training.

[@billyoliver3785]

How Important is it to gas rate and why?

[@jamesllaw3201]

Hi Derek, I get to the figure 0.086 x 317 =27. 262kw, That's the way I was taught!!, So am I doing it the correct way?, Cheers.

[@tomkatgastraining]

There are lots of ways of gas rating the way I do it shows you how to do it and understand where the figures come from ie cv of gas and how many mega joules in a kw. Not sure what you have been taught but if it gives the same answers as my way and you are happy with it then carry on 👍🏻

[@wasimshaikh400]

Hello darek I got acs exam on Monday any tips Thankyou Your video really helpful.👍

[@tomkatgastraining]

Watching my videos on pipe sizing purging and ventilation will help you a lot. Good luck with your exams let me know how you go on 👍🏻

[@wasimshaikh400]

@@tomkatgastraining Hello darek I pass my acs exam today Thankyou for video that’s help me a lot 👍🙏🙏🙏

[@tomkatgastraining]

@@wasimshaikh400 well done 💪🏻👍🏻

[@happychappychappy]

In the ACS exam is it possible to use a conversion chart once the usage value has been achieved? Thanks

[@tomkatgastraining]

If it’s in your training manual then yes

[@happychappychappy]

It is, thanks for the reply Derek

[@manjsingh6500]

Thank you Brilliant 😊

[@AnEyeScream]

Thank you, Nikola Ditsov

[@johng4635]

can u do a ventilation video tomcat?

[@tomkatgastraining]

Check out the playlist on the channel I have done quite a few videos on ventilation

[@bryanwilliams3827]

Informative

[@plumbertime]

Lgsc please. Just what’s legal requirement for each said appliance. Think I do too much 😂

[@tomkatgastraining]

Just filming the difference between landlords report and a service so look out for that soon

[@willlomas2725]

Cheers pal....

[@suewarrington8155]

👍Sue Warrington

[@samchappell233]

👍👍

[@raul835]

Love it

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👍

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[@neverlessgaming5756]

Kaiormston 👍

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Tomkat👍🏻

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