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Discuss Low hot water pressure in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

Ric2013

Plumber
Messages
2,672
Questions to Indi_s - is it 15mm all the way, or just a short section? How many metres (approximately) of 15mm pipe is the gas running through in order to reach the boiler to the meter?

Question to RGIs - can a registered gas installer legally undersize a gas pipe due to difficult installation circumstances?
 

cjg

Plumber
Messages
270
also with yours only being 24kw, and the very cold weather it will not bring the cold up as far as normal,
28kw boiler would do better, if you turn your dhw control to full and slow the flow down at the tap you will get hotter water..
still think that 15mm gas should be checked by g. r . engineer.
 
Messages
11
also with yours only being 24kw, and the very cold weather it will not bring the cold up as far as normal,
28kw boiler would do better, if you turn your dhw control to full and slow the flow down at the tap you will get hotter water..
still think that 15mm gas should be checked by g. r . engineer.
The 15mm gas pipe runs all the way about 10 meters maybe
 

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer
Messages
26,947
Yes can be dangerous the old boiler might of been ok the new ones these days are gas hungry and need more than the old ones hence most of the time needing to upgrade to 28mm pipes depending on run etc
 
Messages
11
Yes can be dangerous the old boiler might of been ok the new ones these days are gas hungry and need more than the old ones hence most of the time needing to upgrade to 28mm pipes depending on run etc
You have got me worried ! I will get a Registered Gas Engineer to come out and have a look
 

Ric2013

Plumber
Messages
2,672
To Indi_s You could probably get Gas Safe to come out (for free?). May be worth giving them a phone call and explain the situation.
Yes can be dangerous the old boiler might of been ok the new ones these days are gas hungry and need more than the old ones hence most of the time needing to upgrade to 28mm pipes depending on run etc
If we are assuming the old bpiler was 28kW and this one is 24kW, why would the old one need less gas than this one? It's counter-logical - but my logic may be wrong.
 

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