Hi.
I need to get a gas pipe run from the kitchen to the joined garage for a new boiler install. The gas rate is 3.5m2/h, and looking at the calculations here it seems like 22mm should be fine:
http://www.cda.org.uk/megab2/build/pub124/sec3.htm
Including bends the length of run is going to be around 8.25 to 9.25m (depending on bends) but I've seen some people say that the calculations can be over optimistic so you're looking at around half that in reality. If so, some of the pipework will need to be in 28mm.
The pipe size from the meter is 3/4, and that will go to 22mm copper for a short run before it can go to 28mm, but how much in your experience will need to be run in 28mm for the run to be considered OK for the boiler? It would be a pain to have to rerun again if the supply is found to not be adequate when tested. The only other appliance that will be on the gas supply will be a 4 ring gas hob.
TIA
I need to get a gas pipe run from the kitchen to the joined garage for a new boiler install. The gas rate is 3.5m2/h, and looking at the calculations here it seems like 22mm should be fine:
http://www.cda.org.uk/megab2/build/pub124/sec3.htm
Including bends the length of run is going to be around 8.25 to 9.25m (depending on bends) but I've seen some people say that the calculations can be over optimistic so you're looking at around half that in reality. If so, some of the pipework will need to be in 28mm.
The pipe size from the meter is 3/4, and that will go to 22mm copper for a short run before it can go to 28mm, but how much in your experience will need to be run in 28mm for the run to be considered OK for the boiler? It would be a pain to have to rerun again if the supply is found to not be adequate when tested. The only other appliance that will be on the gas supply will be a 4 ring gas hob.
TIA