Hey Derek, genuinely thankfully for these. I've got my ACS in a few weeks and these are helping greatly with my preparation. I'm in for 2 days training before hand, but reading books can be very dull. Just a comment you probably won't even see as it's an old video. Just thought I'd let you know your work is really appreciated by us engineers. 🙏
THANK YOU. very very helpful!!! you are not only a professional gas engineer , but you are also a good teacher who make me understand unclear things i had...lucky to watch the videos free of charge
Hi Derek I’ve noticed at 15 minutes when explaining open flue ventilation in a room , your final calculations are( 135 cm free area ) you didn’t take off the 7kw adventatious air! Shouldn’t it be 100.13 cm squared Love your dedication to educate new & old timers like me. very clear explanation of the regulations and why there implemented. All the best Rob👍🏻
Very helpful and made it easy to understand, but not sure how the calculation on the first example added up. Open flue ventilation. The 20.02 x 5= 100.13. On your example it added up to 135.13cm2. Which ones correct please. Keep up the good work as its very informative and helps with my training no end.
Derek you are the best teacher anyone can come across i am very lucky to come across your video i was in the middle of my gas training and i was so confuse and i almost gave up from continuing the training and i told my centre i dont want to continue with gas rather i want to plumbing instead but they refuse and i had to continue with very little courage on the training but watching your video for the first time has restored my confidence as every thing is very clear with your explanation. Bless u man
Precise and clear explanation. I wish tutorials like this were about when I 1st sat my Acs. Flueing and ventilation was a pretty heavy subject as was pipe sizing 👌. The more you practice the easier it becomes. Like learning how to ride a bike, 2nd. nature. Plenty heating engineers use apps or vent calculation gauges now. 👍
Derek thank you very much for taking time to make this video for us. I was doing ventilation yesterday and could not get my head around it but after watching your amazing video i have a better understanging now you made it look so simple . I can not thank you egnough for your efforts 👍your a champian mate dnt let tail bearers put you down they are selfish people who dont want people to learn once again thank you sir👍.
Thank you for your help your video was very helpful! but on the example you gave us for the open flu cross boiler 30kw, the calculation doesn't seem right because 20.02 x 5= 100.13
Excellent much easier to watch your videos than trolling through technical manuals. This subject is less relevant than it used to be with less open flues about so its good to get a refresher with an inspection looming.
These videos are helping so much. Using them to try and get ahead for my classes. Just need to find an engineer in my area. Looking for anyone in the Edinburgh area who are willing to to take me out.
Another well presented video with valuable and well explained information, always enjoy watching these videos as helps us to gain more knowledge through your explanation rather than reading and trying to understand it in the book, your explanation is much more understandable.. 👍👍😁😁
Fantastic thanks Derick doing my re sit at M65 (company's choice not mine) your explanation is far easier and less confusing keep the great videos coming 😎
Great video. Very helpful to understand why you would require an outside vent. Whilst it’s important to understand the figures, I’m assuming in 2021, most people will be looking to purchase an appliance that does not require an external vent, especially in Winer!
Most water heating appliances now are room sealed so no need to put holes in walls ! The conflict is trying to insulate your house as much as possible which does not support putting big holes in the walls so there is nice cold fresh air coming in for a gas appliacne ! But those type, though still to be found in older instatllation, are no longer made. Gas fires however can demand a lot of air, so it may be necessary to put vents in to the outside.
What a great explanation! Look forward to every Wednesday. Will you do any videos on gas controls or going through filling out documentation on a job for example a service or landlord safety certificates. It's one thing being good at your job but to be able to pass that information on to other people in an easy to understand way is extremely difficult. Please keep up the great work.
Thank you very much for these videos Derek. I'm filling out home work book and your videos are so helpful no rather copy but to learn and take in important information. Definitely would recommend TOMKAT GAS for new enteraces. 😁
Hi Bro you explain everything proper way and nicely, Many of the instructors out their don't explain the hole Sanario like in this video you explain number 5 where it's coming from . Thanks Bro for further training I will definitely contact you.
Excellent. Very well explained, clear and precise. Only 3 1/2 stars because that music is very irritating, and makes it difficult to concentrate on what you are saying.
Great help derek just revising for my acs next week and was struggling remembering the ventilation calcs and room vent sizes etc keep up the good work 👍
If your coming into the industry now, open flue appliances with vents are going to be few and far between. The last one I attended was about 4 years ago, In my experience its the cause of the most amount of friction with customers. The one I mentioned was a Baxi Boston boiler installed in a kitchen with no air vent fitted. The customer just about threw me out of the house after saying I didn’t know what I was talking about after I advised him it was unsafe to use the boiler. On another occasion with another customer, I got into another argument after a kitchen fitter had fitted a new kitchen, removing the air vent that had been fitted for the boiler and then boxing the boiler in tightly without any compartment ventilation. The boiler in question was an open flue Glowworm Hideaway. In many respects I don’t miss them.
Hi many thank to your great work . some thing to explain : 30/1.11= 27.027 30 - 11%= 26.7 the number should be 1.11 and not 11% please check and correct . then 5 cm2 for every KW after the first 7KW ??? so if we have 9 KW 9 - 7 = 2 * 5 = 10cm2 ????? please correct me . great respect Thank you
is it just me or is the calculation on the board at 12.37 wrong i get 20 decided by 1.11 = 27.02 27.02 minus 7 = 20.02 20.02 times 5 = 100.1cm2 it could just be me
You mentioned if appliance does not specify if it is gross or net, to take it as Gross, problem we have here is, it means you will make it even smaller by dividing the gross by 1.11. So we should assume its Net not gross. Am i right???
Many thanks derek I think I need to watch this every week to keep up to scratch with it also never use your phone as it can and does mess up calculations
am referring to your calculation you made on free air required, 20.02 * 5 =100.1 cm sq not 135..cm sq, I might be calculating it wrong. (open vent calculation on 30kw gross)
i know this is an old video but, if the data badge doesnt state wether its gross or net output, you said assume its gross. shouldnt we assume its net? as not dividing by 1.1 yeilds a higher free air area meaning its the safest option? these videos are excellent. sitting my initial acs this month.
You are correct but I said gross for my trainees because they kept getting a certain question wrong in the exams I didn’t think anyone else would watch my videos. How wrong was I 😂
@@tomkatgastraining no theyve been great. very informative and really helping settle nerves for the assessments this month. any tips for what subjects to really get stuck into would be appriciated.
Hi a little help. You've got the sums on the white board but at the bottom you have 20.02x5 =135.13 but it's 100.1 and when you point at the 0.2 you say it's 25 which doesn't calculate out either
@@Whatsonvinyl the figures don’t matter in the video because you’re numbers will be different so as long as you know the formula that’s what matters. I know you are not being smart it’s just I get lots of comments about it but I did it so I can quiz my trainees to see if they have watched the video👍🏻
Yeh I know and like I have said to lots of comments is I did it to see if my trainees understood what is going on and they could see the mistake but thanks anyway
Hey Derek, genuinely thankfully for these. I've got my ACS in a few weeks and these are helping greatly with my preparation. I'm in for 2 days training before hand, but reading books can be very dull. Just a comment you probably won't even see as it's an old video. Just thought I'd let you know your work is really appreciated by us engineers. 🙏
THANK YOU. very very helpful!!! you are not only a professional gas engineer , but you are also a good teacher who make me understand unclear things i had...lucky to watch the videos free of charge
ARIAN XHEBRAJ thanks for watching cheers
Could at least show vents you can use
Hi Derek
I’ve noticed at 15 minutes when explaining open flue ventilation in a room ,
your final calculations are( 135 cm free area ) you didn’t take off the 7kw adventatious air! Shouldn’t it be 100.13 cm squared
Love your dedication to educate new & old timers like me.
very clear explanation of the regulations and why there implemented.
All the best
Rob👍🏻
Felt like I was losing my mind there 😂
Very helpful and made it easy to understand, but not sure how the calculation on the first example added up. Open flue ventilation. The 20.02 x 5= 100.13. On your example it added up to 135.13cm2. Which ones correct please. Keep up the good work as its very informative and helps with my training no end.
i was thinking same, i think they've made a mistake. it should def be 100.13
Derek you are the best teacher anyone can come across i am very lucky to come across your video i was in the middle of my gas training and i was so confuse and i almost gave up from continuing the training and i told my centre i dont want to continue with gas rather i want to plumbing instead but they refuse and i had to continue with very little courage on the training but watching your video for the first time has restored my confidence as every thing is very clear with your explanation. Bless u man
Thanks for watching cheers
Precise and clear explanation. I wish tutorials like this were about when I 1st sat my Acs. Flueing and ventilation was a pretty heavy subject as was pipe sizing 👌. The more you practice the easier it becomes. Like learning how to ride a bike, 2nd. nature. Plenty heating engineers use apps or vent calculation gauges now. 👍
Derek thank you very much for taking time to make this video for us. I was doing ventilation yesterday and could not get my head around it but after watching your amazing video i have a better understanging now you made it look so simple . I can not thank you egnough for your efforts 👍your a champian mate dnt let tail bearers put you down they are selfish people who dont want people to learn once again thank you sir👍.
These training videos help so much and give you a much better understanding than just going through the books only 👍🏻
Got my ACS reassessment in a month and I found your video extremely thorough and helpful.Carry on.Well done
Thank you for your help your video was very helpful! but on the example you gave us for the open flu cross boiler 30kw, the calculation doesn't seem right because 20.02 x 5= 100.13
Correct I did it to see if my trainees understand it but they say nothing and everyone else tells me it’s wrong 🙄😜👍🏻
I watched this again because it’s brilliant. So easy to follow. Even for people like me. Thanks Derek
Asian Jon. Training.
Excellent much easier to watch your videos than trolling through technical manuals. This subject is less relevant than it used to be with less open flues about so its good to get a refresher with an inspection looming.
Thanks Derek. I am currently doing ACS course and your videos are brilliant and clearly explained. Thank you so much. Keep up the good work.
Hope you have had a go at winning the tools 😁
I'm in training at the moment and I struggled with the vent in series your videos are really helping so thanks
Great video, moving through them slowly. Clear and well explained, so helpful, thanks!
Ryan Bowers thanks for watching cheers 👍🏻
Absolutely amazing! 🤩
“I might be wrong... but I doubt it” 😂
Well explained good refresher 👏🏿👏🏿👏🏿👏🏿
These videos are helping so much. Using them to try and get ahead for my classes. Just need to find an engineer in my area. Looking for anyone in the Edinburgh area who are willing to to take me out.
Excellent video Derek. 😊
You are great! Very clear and sound.THANK YOU!
Nice and simple explanations. Thanks Derek 👍🏻
Asian Jon. Training
A very good explanation for new beginners into the gas industry and also for experienced operatives who work on gas.
Another well presented video with valuable and well explained information, always enjoy watching these videos as helps us to gain more knowledge through your explanation rather than reading and trying to understand it in the book, your explanation is much more understandable.. 👍👍😁😁
Unfortunately the math is incorrect.... 20.02 x 5 = 100.10
god bless you Derek robins 👏💙👏❤️ I learnt a lot
Once again a fantastic video...cheers fella.
Derek watched all ure videos and what a help it was for my acs re assessment which I passed last week keep up the good work 👍
Alex Weir well done with passing and thanks for watching cheers
Fantastic thanks Derick doing my re sit at M65 (company's choice not mine) your explanation is far easier and less confusing keep the great videos coming 😎
Good luck they are a good bunch at m65 👍🏻
Great video. Very helpful to understand why you would require an outside vent.
Whilst it’s important to understand the figures, I’m assuming in 2021, most people will be looking to purchase an appliance that does not require an external vent, especially in Winer!
Most water heating appliances now are room sealed so no need to put holes in walls ! The conflict is trying to insulate your house as much as possible which does not support putting big holes in the walls so there is nice cold fresh air coming in for a gas appliacne ! But those type, though still to be found in older instatllation, are no longer made. Gas fires however can demand a lot of air, so it may be necessary to put vents in to the outside.
What a great explanation! Look forward to every Wednesday. Will you do any videos on gas controls or going through filling out documentation on a job for example a service or landlord safety certificates.
It's one thing being good at your job but to be able to pass that information on to other people in an easy to understand way is extremely difficult. Please keep up the great work.
1Monaghan great idea I will have a look I am definitely doing a controls one as I have started filming it lol. Thanks for watching
Thank you very much for these videos Derek. I'm filling out home work book and your videos are so helpful no rather copy but to learn and take in important information. Definitely would recommend TOMKAT GAS for new enteraces. 😁
Great video, very useful information and very helpful for us new trainees.
Tomkat gas trainee.
Hi Bro you explain everything proper way and nicely, Many of the instructors out their don't explain the hole Sanario like in this video you explain number 5 where it's coming from . Thanks Bro for further training I will definitely contact you.
Excellent. Very well explained, clear and precise. Only 3 1/2 stars because that music is very irritating, and makes it difficult to concentrate on what you are saying.
This video is really helpful to clear concepts
Good job! Nice tutorial!
Great vid for revision
Kamal Training 👍
Great help derek just revising for my acs next week and was struggling remembering the ventilation calcs and room vent sizes etc keep up the good work 👍
Good luck next week with the ACS 👍🏻
@@tomkatgastraining cheers pal
Good tutorial as usual Derek thanks 👍
Very very useful tutorial video for new gas students.
Thank you very much sir.
Thanks for watching 👍🏻
Great tutorial, very well explained!👍Abdi
brilliant guidance, so important to know basic when goling to look a gas appliance
Mohammed Nazir. Excellence video.
If your coming into the industry now, open flue appliances with vents are going to be few and far between. The last one I attended was about 4 years ago, In my experience its the cause of the most amount of friction with customers. The one I mentioned was a Baxi Boston boiler installed in a kitchen with no air vent fitted. The customer just about threw me out of the house after saying I didn’t know what I was talking about after I advised him it was unsafe to use the boiler. On another occasion with another customer, I got into another argument after a kitchen fitter had fitted a new kitchen, removing the air vent that had been fitted for the boiler and then boxing the boiler in tightly without any compartment ventilation. The boiler in question was an open flue Glowworm Hideaway. In many respects I don’t miss them.
The shit we go through every 5 years just to be told by an unqualified person that we're wrong... its unreal lol.
Very useful video. Thanks Derek.
Polish Peter - trainee at TomKat😀
Please don’t remove sir
It’s 1000% is best explanation it’s really helping me sir
Many thanks
Thanks for watching cheers
Very informative video, keep up the good work 👍🏽
These are great videos. With ducts though what are the rules/regulations regarding gas pipe work run in ducts?
Depends on the size of the duct depends on the vent size. Also needs a vent top and bottom of the duct
A big thank you to you once again.
Evergreen presentation.... well-done Mate
First class Video ☝️👍Connor
Hi
many thank to your great work .
some thing to explain :
30/1.11= 27.027
30 - 11%= 26.7
the number should be 1.11 and not 11%
please check and correct .
then 5 cm2 for every KW after the first 7KW ???
so if we have 9 KW
9 - 7 = 2 * 5 = 10cm2 ?????
please correct me .
great respect
Thank you
Great stuff for helping me with my revision. Mo
P.E.R.F.E.C.T ...Thank you a lot !!!
Great video thank you for sharing your experience Bro
Nice video but just one thing, you state 30kw but the data badge says 23.45 where you getting 30 from?
brilliant, I would have love to renew my ACS with you guys, unfortunately live nearly 300 miles away.
is it just me or is the calculation on the board at 12.37 wrong i get
20 decided by 1.11 = 27.02
27.02 minus 7 = 20.02
20.02 times 5 = 100.1cm2
it could just be me
Super excellent 10 out of 10
i think the 1st calculation was wrong but I know you did it to check we are watching, well done, enthrawling, cant stop watching, great teacher.
20 x 5 isn’t 135? It’s 100. Plus the adventitious air of 35 to get 135cm3.
Great Education
👍 👍 another brilliant video
You mentioned if appliance does not specify if it is gross or net, to take it as Gross, problem we have here is, it means you will make it even smaller by dividing the gross by 1.11. So we should assume its Net not gross. Am i right???
Hey , I like your videos but how is 20.02 x 5 =135.13 ? Ain't it 100.1 ??? 27x5 would be 135 is in it ?
Many thanks derek I think I need to watch this every week to keep up to scratch with it also never use your phone as it can and does mess up calculations
I think I'll resit the ventilation exam tomorrow Derrick haha!
What did we have before GasSafe ? why and when did gas safety regulations come in ? asking as a non gas safe person , thanks.
@@mike-s8n8y we had corgi before gas safe . engineers have had to be registered from 1991 and gas safe took over from corgi in 2009
@@tomkatgastraining Thanks for reply ,
Brilliant series of videos as always Derek . Only suggestion is to lose the background music while doing the explanations.
The music has gone in all my new videos 👍🏻
@@tomkatgastraining Nice one Derek. Much appreciate the quick response have a good weekend 😊
Thank you bast teacher ever 🎉🎉
Thank you Derek 😊
Useful vid.
This video is wicked, thank you
Hi Derek,
Why should we duct a cavity wall to join an inner and outer vent?
Thank you
So the air passes from outside to inside and not up the cavity
Brilliant example 👏
very informative
Excellent u should make videos about chimney
thanks mate do you ever link the documentation you use in the videos? stuff like the classifications could be helpful.cheers again
eazyrat sorry no as most have to be paid for so no link can be added. Thanks for watching and your comment cheers
Very informative 👍
perfect explanation
Brilliant 👍👍
Thank you Derek
Really helpful video, thank you
Very well explained 👏
am referring to your calculation you made on free air required, 20.02 * 5 =100.1 cm sq not 135..cm sq, I might be calculating it wrong. (open vent calculation on 30kw gross)
Did I say it or write it
Ray Hurrell fantastic
Thank you Derek, Mohamed Hassan
i know this is an old video but, if the data badge doesnt state wether its gross or net output, you said assume its gross. shouldnt we assume its net? as not dividing by 1.1 yeilds a higher free air area meaning its the safest option? these videos are excellent. sitting my initial acs this month.
You are correct but I said gross for my trainees because they kept getting a certain question wrong in the exams I didn’t think anyone else would watch my videos. How wrong was I 😂
@@tomkatgastraining no theyve been great. very informative and really helping settle nerves for the assessments this month. any tips for what subjects to really get stuck into would be appriciated.
@@Mr1anmu77ay we are logic and they have quite a few questions on CO alarms and shared flue systems so have a look at them
Thanks Derek..
👍 Well explained
Hi a little help. You've got the sums on the white board but at the bottom you have 20.02x5 =135.13 but it's 100.1 and when you point at the 0.2 you say it's 25 which doesn't calculate out either
Yeh I know but thanks anyway
@@tomkatgastraining I wasn't being smart I was just confused I was doing it wrong. Thanks
Videos are great and a lot of help
@@Whatsonvinyl the figures don’t matter in the video because you’re numbers will be different so as long as you know the formula that’s what matters. I know you are not being smart it’s just I get lots of comments about it but I did it so I can quiz my trainees to see if they have watched the video👍🏻
Tom. Your first Open flue Ventilation Calculation is wrong. '20.02 x 5= 100.1 Not.... 135.13 ????
Yeh I know and like I have said to lots of comments is I did it to see if my trainees understood what is going on and they could see the mistake but thanks anyway
Thanks Derek 🙏 Benny
Thanks for this found very helpful 👍
thanks Derek . Ion Vitiu (Nick)
Davison here..thanks for this video
Pot on explenation mate thanks 👍
At what size is a compartment, no longer a compartment, but a room?
Only becomes a room if it has a window and is habitable. Nothing to do with size
@@tomkatgastraining Thanks. I call where my boiler is a store room. It has a window but is only about 1m x 2m x 2.5 height. Habitable ??
Hi
How we ventilation on flueless tumber dryer.