the gas feed for my new uninstalled combi is 22mm but to save time and expense would it be possible to tee off a 15mm gas pipe and then increase it to 22mm or would this create any problems.
gas pipe
- Thread starter tonyten
- Start date
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mate, i'd put your flame suit on right about now.
Have it done properly by a trained person who belongs to Argi/Corgi 
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pixey a little knowledge can be dangerous,your advice could kill i would suggest you go to college do the acs then come back and tell us how wrong you were with your advice,unless the pipe is sized correctly you will not get the performance from your boiler or correct combustion
i'm not doing it myself but i am paying so i want as much expert advice as i can get
I went to a combi boiler not working and the customer complained that when he ran hot water the gas hob would nearly go out all gas pipework was in 15mm and the bioler was purchased from B&Q when I asked who installed it he could not remember. YEE HA
thanks for the advice i will make sure it is taken from the 22mm pipe even though it may cost a bit more as it is in an awkward position, better to be safe than sorry.
In short you have to have pipes sufficiently sized to only drop 1 mBar pressure across the pipework when your combi is heating hot water full kilt and all your other appliances are on acording some full blast some proportionately depending what the appliance is.
If the pipework isn't correctly sized one or more appliance could be dangerous, and some won't work very well, you hot water performance would be affected.
Most situations would entail 22mm all the way to a 28kw combi. Some equivalent lengths require 28mm pipework.
If the pipework isn't correctly sized one or more appliance could be dangerous, and some won't work very well, you hot water performance would be affected.
Most situations would entail 22mm all the way to a 28kw combi. Some equivalent lengths require 28mm pipework.
Did nobody spot the plug?
Bahco said:Did nobody spot the plug?
They should extend their name to Association of Registered Gas Installers (British Association of Registered Gas Installers).
Then your acronym would be argi (bargi). Much
. Ho Hum. I'll get my coat.DIYnot Local
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