Boiler pressure

kam1977

Hi yesterday Scottish Water fixed a leak in my supply pipe and the plumber said he was surprised I had been getting any water to my house as pressure was so low. . Rightly or wrongly I thought the increase in pressure had effected my boiler so I bled my radiators to bring the pressure down. After that I thought the problem was solved but next time I looked at pressure gauge it was down at 0 , I thought maybe safety valve had been released and sure enough the area under my condensation pipe was wet. I topped up the boiler but by time I went to bed it was down at 0 again. I filled it up again and I have had to do it again this morning. Is it normal for the boiler to need topping up a few times after bleeding radiators or do I need to call someone out?

Fire_Fox

Bleeding the radiators is to vent air, improve flow of hot water, so each room gets warm ... I think?? It's been ovee a decade since I was 'cooking on gas'.

Then you adjust the thermostatic valves on each rad. So you don't boil alive. I think ...

Don't remember bleeding to reduce boiler pressure.

Norman_Castle

kam1977 wrote: »

Hi yesterday Scottish Water fixed a leak in my supply pipe and the plumber said he was surprised I had been getting any water to my house as pressure was so low. . Rightly or wrongly I thought the increase in pressure had effected my boiler so I bled my radiators to bring the pressure down. After that I thought the problem was solved but next time I looked at pressure gauge it was down at 0 , I thought maybe safety valve had been released and sure enough the area under my condensation pipe was wet. I topped up the boiler but by time I went to bed it was down at 0 again. I filled it up again and I have had to do it again this morning. Is it normal for the boiler to need topping up a few times after bleeding radiators or do I need to call someone out?

An increase in mains water pressure shouldn’t affect the heating systems pressure. The gauge will tell you if the pressure is high or low.


The safety valve releases through an overflow pipe, not the condensate pipe.

Southend1

Norman_Castle wrote: »

An increase in mains water pressure shouldn’t affect the heating systems pressure. The gauge will tell you if the pressure is high or low.


The safety valve releases through an overflow pipe, not the condensate pipe.

Some boilers have a combined condensate/PRV outlet