If it wasn’t for viva training academy I wouldn’t hardly know anything the detail that yous go in is superb and by superior to what i get taught in college
Thank you for updating this very useful information with excellent explanation. Unfortunately I have hearing impairment so it was a bit difficult to me to hear this gentleman. Can you please doing something about it. Regards A Musheri
great video! wanted to ask if the the flame goes out on the byepass for the cooker, does the the gas continuously flow? doesnt the gas get completely shut as its not sensing a flame. Thanks
If there is an interruption to the gas the flame will go out, if gas is reestablished it will flow into the burner unlit through the bypass. It's unlikely to create an explosive atmosphere though because of ventilation requirements for cookers. Saying that a thermoelectric FSD is better than a liquid expansion because it will shut off gas to the burner in case of flame failure.
A liquid expansion flame supervision device never fully shuts off gas flow (unlike other FSDs). If the flame fails, the valve partially closes to a very low flow rate that should not cause explosive build-up of unburnt gas. When you light the oven, you see a very low flame. Then, once the liquid expansion phial heats up, the flame suddenly goes to full height. The low flow rate can be thought of as a bypass rate for the FSD, but do not confuse it with the oven thermostat bypass which takes over when the oven reaches setting temperature. They are two different things.
The second section with the multifunctional control, Once the thermocouple is heated and allows gas through the valve, it goes through the simple regulator and to the solenoid which is operated via the thermoelectric switch. My question, how does the switch know when to send electricity to the solenoid to open the valve?
I'm having a thick moment: if the thermostat valve closes when reaching temperature and cuts off the gas flow, how can the gas get through to feed the bypass low flame? OOPS, you explained later, thanks, Great explanation thanks!
Hi Allen Technology has moved on and I just can’t understand that why the old methods are still in ACS requirements..advanced methods should be introduced …Std efficiency boilers are dying out as you know… Open to opinion 👍
They're still in the exams and practical assessment. They're obviously a key aspect of the safety of an appliance. For reassessments, they just shorten the list of ones you have to cover.
facebook.com/groups/Gas999/
If it wasn’t for viva training academy I wouldn’t hardly know anything the detail that yous go in is superb and by superior to what i get taught in college
Russ took me on my very first commercial acs at Blackburn college. Top bloke.
This explanation of gas controls could not be more detailed. Amazing stuff!
Thanks very much for your comment, please consider subscribing to support the channel 🙂
its Russel, he did my ACS for commercial catering at Blackburn college, he's brilliant
Thanks very much for your comment, please consider subscribing to support the channel 🙂
This is a fantastic explanation of gas controls! The diagrams made total sense of them for me. Thanks! 👍🏼👍🏼👍🏼
Thank You
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Thanks for adding me, Allen. Booked to do my ccn1 in September.
Your video's are brilliant.
Cheers Allen
Thank You
Allen...every day you prove you are the master of gas boilers
Thank You
These acs videos are great, thank you for making them. I’ve got my 3rd acs coming up in a few months so starting to go over everything again.
Glad you like them! Thanks
Excellent video. I read it in the book and don't really get it. Watch your videos and it all makes sense. Thanks 👍
Thanks for sharing this video, very clear instructions and well delivered lesson 👍
This video is gold dust for me. thanks for the upload!
Thank You
Brilliant. lots of detail, perfect for me learning the trade very slowly ☺️ thank you
Thank You
Thanks, Alan. the more ACS stuff the better.
Thank You
That was brilliantly explained, thank you!
Thank You
Great video well explained and easy to understand
Thanks mate
Glad you liked it!
Hey Allen, please make more videos like this
Its Gold mate
Another brilliant video.. keep em coming
Thank You
Excellent explanation. Thanks.
Thank You
First time Good knowledge video. Thanks
Glad it was helpful!
Thank you for updating this very useful information with excellent explanation.
Unfortunately I have hearing impairment so it was a bit difficult to me to hear this gentleman.
Can you please doing something about it.
Regards
A Musheri
Turn your phone volume up
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Brilliant explanation
great video! wanted to ask if the the flame goes out on the byepass for the cooker, does the the gas continuously flow? doesnt the gas get completely shut as its not sensing a flame. Thanks
If there is an interruption to the gas the flame will go out, if gas is reestablished it will flow into the burner unlit through the bypass. It's unlikely to create an explosive atmosphere though because of ventilation requirements for cookers. Saying that a thermoelectric FSD is better than a liquid expansion because it will shut off gas to the burner in case of flame failure.
@@MSKChess thanks
@@abdulh63 Most welcome bhai
A liquid expansion flame supervision device never fully shuts off gas flow (unlike other FSDs). If the flame fails, the valve partially closes to a very low flow rate that should not cause explosive build-up of unburnt gas. When you light the oven, you see a very low flame. Then, once the liquid expansion phial heats up, the flame suddenly goes to full height. The low flow rate can be thought of as a bypass rate for the FSD, but do not confuse it with the oven thermostat bypass which takes over when the oven reaches setting temperature. They are two different things.
Brilliant thank you 👍👍👍
Thank You
Good explanation
The second section with the multifunctional control, Once the thermocouple is heated and allows gas through the valve, it goes through the simple regulator and to the solenoid which is operated via the thermoelectric switch. My question, how does the switch know when to send electricity to the solenoid to open the valve?
Thank You
Fantastic and informative video, more like this please Al. It would be great if we could get one on ventilation and flues :):)
I have some more to edit, They will be uploaded soon. Thanks.
really really good vidio
Thank You
Thank you so much for this
Thank You
I'm looking into getting into gas engineering in Manchester any training courses going
Is there any more videos on controls, flame rectification, vitiation sensing device, thermoelectric FSD etc etc
We have loads of videos on the viva training academy playlist. Thank You
I'm having a thick moment: if the thermostat valve closes when reaching temperature and cuts off the gas flow, how can the gas get through to feed the bypass low flame? OOPS, you explained later, thanks, Great explanation thanks!
The main gas valve is closed but there is a small bypass which a small amount of gas goes through
Great
Thank You
I have some problems, and need your help. Is it possible to talk with you?
yes
Hi Allen
Technology has moved on and I just can’t understand that why the old methods are still in ACS requirements..advanced methods should be introduced …Std efficiency boilers are dying out as you know…
Open to opinion 👍
I agree to a certain extent but it’s still good to know just in case. Thanks.
Thanks bro
Welcome
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Can’t remember, last time I changed a TC
i haven’t done one for a lot of years. Thanks.
Wanna study Gas engineering.where in south Africa.?
Thank You
Just when I thought John Virgo knew it all
💝💝💝
👍🏼
Thank You
👍🤓👍
Thank You
You only touched on thermocouple at the end out of nowhere, not really covered it .
FSD - Flame Supervising (not SENSING) Device
SUPERVISION, not supervising
👍
Thank You
Sounds like max off max & paddy
Hot water fluctuations
There not in exams anymore are they ? They have taken them out of the exams
They're still in the exams and practical assessment. They're obviously a key aspect of the safety of an appliance. For reassessments, they just shorten the list of ones you have to cover.
👍🏻
Thank You