greenstar 30si boiler too high pressure

[oztraxed]

Hi all, how are you? Name's Ed, and I have a self made problem I wondered if you guys can help me with. My boiler's 3 years old, past warrenty free service etc, and normally all I ever have to do is increase the pressure a bit til 1.2 or 1.5.

But tonight wasn't paying attention and got it into the red. Simple question i am sure, how do I decrease it again please? Looked everywhere on the net and all they show is how to increase it, but no one else sees to have made my mistake of putting it too high!!

help!!!

don't want my boiler to blow a gasket/fuse or whatever it does, I have turned the central heating off just in case, and it's getting cold!!

thanks

Ed

 

[Dannypipe]

Ed, look for a drain point in your system, and let a little water out. You won't need to let much out as water doesn't compress, and thus it takes very little to lose quite a bit of pressure on the guage.

Don't panic about the boiler blowing up. It is fitted with a pressure relief valve, which will automatically eject water from the rear of the boiler to outside, should the pressure in the system get too high.

Don't rely on this though, and drain a little from a drain off point.

 

[Puddle]

Or

Get a old towel and vent one of the rads until system pressure falls to required level

imho

 

[Dannypipe]

Look for one of these by a radiator tail. Or any where in the system. Use a spanner on the square head and with a tub, catch some of the water. There are other options if you can't find one of these.

 

[oztraxed]

Guys thanks!!! What a doofus i am!!! I opened one of the bleed values on a rad, and pressure dropped! So simple, well it is once someone tells ya!!!

Didn't see anything obvious by the boiler which was why I did the rad. I feel such an idiot!! thanks for the prompt and reassuring answers!!!

Merry Xmas to all!!!

 

[Dannypipe]

Well done, merry Christmas.

 

[PaulW]

Re: greenstar 30si boiler too high pressure - but with a slight difference

Hi,


This is a similar question to Ed’s of two years ago!


Only difference is that when I overpressurised the boiler it went to just over 2 bar, so still in the green zone.


We had a Parkray system replaced with this combi boiler only last August. My gut instinct is just to leave this alone.
But is that safe and sensible? Is there good reason to get it back down now into the 1.0 to 1.5 bar range?


Grateful for any comments and advice on this.


Cheers

Paul

 

[Dotty]

It's better if you release a bit of pressure. Do this when the system is cold.

 

[PaulW]

Re: greenstar 30si boiler too high pressure - but with a slight difference

Hi croppie,

Cheers for this advice. I'll give bleeding a radiator a go.