passyourgas.blogspot.com/ These are the types of gas fire you may encounter on your assessment. There is a description of each type and an explanation telling you how to calculate the ventilation needed.
@@passyourgas Thank you, appreciate the time taken to make these videos. Would love to see video on chimneys/flues for for open flue appliance. Maybe explaining when twin walls flues are Required. Also clearances around fire and fireplace requirements. Would be great help, thank you
EXCELLENT video!!! But what does the '45w/m3 of heated space' mean? It's beneath 'MAX HEAT INPUT NET' heading. I took that to mean you can't have a flueless fixed space heater which exceeds 45 watts of net heat input per m3 of the room but that can't be right. Any help would be greatly appreciated.
Hi, thanks for commenting. It means that you’re only allowed to have 45 watts of heat for every metre cubed of space in the room…so if you were fitting a 4.5kw heater (4500w) it would be illegal to fit it in a room less than 10m3. It’s to stop you fitting a fire that’s too powerful for the room..I hope that helps 🙏😁
@@passyourgas Thank you for the reply! But 45watts x 10 = 450watts. So does that not mean an appliance over 450watt is illegal in a 10 M3 room. That is what's confusing me, sorry. Only 45 watts for every M3 seems extremely low to me. Sorry again, where am I going wrong here. 😂
Sorry..typo! Should read 100m3 room. A 10m3 would be approximately 2mx2mx2m so that’s tiny..you’ve got to remember that this was all put in place because landlords were putting standard 7kw in tiny student flats. As you know the poc’s from unventilated appliances go back into the room and there comes a point where the fire is so big and the room so small that it will overcome any reasonable amount of ventilation..that point is 45w per m3. I hope that clears things up…if not let me know…however don’t get too hung up on it, you won’t get tested on it!😁 Just remember it if you have to fit a fire!
@@passyourgas Ah I see. I think I also was overestimating the size of a 10m3 room as well. Thank you so much for your help mate. This is the best gas RU-vid channel I've found by a mile 😁😁 Cheers again!!!
Hi again shredder. There are a few technical reasons because a dfe, unlike an ilfe sits under a flue rather than being attached to a flue. It might help to explain a quick history of dfe’s. In order to make them look like a “real” fire (I.e wood or coal) you have to make the blue gas flame burn yellow. As you’ll be aware from your combustion of gas lessons, methane can only burn yellow if it is creating carbon monoxide! So, back in the day there were lots of these fires being made which created CO and there were a lot of deaths..and the best answer the gas safety council could find was to give them loads of ventilation to prevent the deaths. That’s the simple answer. The more complex answer goes into flue throat size and shape and some heavy calculations that, quite frankly, you will never need to refer to. I hope that helps. Cheers
@@passyourgas thank you 🙏 this info has been very helpful indeed, by the way, gas tumble dryers are a rare appliance to come across but was curious to know how u work out the ventilation for them, any help would be much appreciated, thanks
@@shredder8000 thanks for your input. I’ve just finished a water heater video which should be up in the next day or two. I’ll make a quick one for tumble dryers next week..
