central heating help - pressure.

psd99

psd99

psd99

Soldato
Joined
7 Sep 2008
Posts
5,776
so I got up in the morning and the hot water or heating wasn't working.

I got this boiler called the inhibitor x100 sentinel.

The error message think it was e119.

Anyway I remember seeing it before and the problem was there was not enough pressure in the system. That bar was like below 1 maybe today it was 0.3 or something very low.

I had a quick google and worked out how to put pressure into the system.

Their is a valve I needed to open which is on flexible pipe.
I turned valve for a moment and the heating system turned on and I could heat water going into the system or air.
That bar went from 0.3 to around 1.5 which I then stopped the valve.

The heating worked okay but
I'm really worried now because that pressure gage went up to 2.0 I know this cuz my mum told me that when she rang me earlier. She said it went to 1.75 and then 2.0 - at the point where she turned the heating off but it took ages to go off I hear. It is OFF NOW.

is that too much pressure?

also when the system gets hotter will the pressure begin to rise?

how do I release the pressure?

help I'm really worried.
 
In this situation I'd normally request all your stuff once you were dead but your stuff will be blown to bits with everything else including You :eek:
Best just pack up your stuff & send it me now then at least I can make use of it. :cool:
 
The pressure should go up bettween 0.25 and 0.5 bar when the heating is operating anymore than that tends to point towards a problem with your expansion vessel either it's broken needs re-pressurising or it's not big enough.

Fill it up to about 1.5 bar and then run the heating watch the guage to see when it settles down if it goes much over 2 bar and keeps rising call a plumber too check the pressure vessel.
 
Most have pressure relief valve or some other form of device such as a pressure vessel built in so that if the pressure is too high it doesn't cause damage.
 
a1ex2001 said:
The pressure should go up bettween 0.25 and 0.5 bar when the heating is operating anymore than that tends to point towards a problem with your expansion vessel either it's broken needs re-pressurising or it's not big enough.

Fill it up to about 1.5 bar and then run the heating watch the guage to see when it settles down if it goes much over 2 bar and keeps rising call a plumber too check the pressure vessel.
Click to expand...

yer 0.25 to about 0.5 sounded right but the heating was only on for 30 minutes - I fear it will go above if left on longer. Generally the pressure is at 0.5-1.0 but like I said it is not 1.5 - 2.0. I don't think there is a problem with pressure vessel like the pressure might drop once in 6 months.

4T5 said:
In this situation I'd normally request all your stuff once you were dead but your stuff will be blown to bits with everything else including You :eek:
Best just pack up your stuff & send it me now then at least I can make use of it. :cool:
Click to expand...

shut up!

Mr Men said:
will be fine :D

bleeding the radiators will probably drop the pressure
Click to expand...

thanks so if I want to bleed - does the system need to be off?

which radiator shall I go for first? all of them as well?
 
Kol said:
Most have pressure relief valve or some other form of device such as a pressure vessel built in so that if the pressure is too high it doesn't cause damage.
Click to expand...

thanks I know it is a new system so it should have this but not certain it does.
 
Don't worry the heating loop will have a safety pressure release valve if it gets too high. Like others said, bleed the radiators as that will lower the pressure.
 
psd99 said:
yer 0.25 to about 0.5 sounded right but the heating was only on for 30 minutes - I fear it will go above if left on longer. Generally the pressure is at 0.5-1.0 but like I said it is not 1.5 - 2.0. I don't think there is a problem with pressure vessel like the pressure might drop once in 6 months.
Click to expand...

Not sure you understood me.

Your boiler should be between 1 and 1.5 bar when cold. When inoperation this should increase by between 0.25 and 0.5 bar so when operating your boiler should be bettween 1.5 and 2 bar (apporximately).

If the pressure is increasing significantly over 2 bar and more importantly not stopping rising then you have a fault on the system that will not be fixed by bleeding your radiators (This could infact make the problem worse as any air in the radiators will be acting as an expansion vessel). The most likely cause of this behaviour is a faulty expansion vessel but there are others.

Follow my previous advice to work out what is actually happeneing, preesurise the system to bettween 1 and 1.5 bar and then run the heating while watching the guage if it goes up bettween 0.25 and 0.5 bar and then settles out you are ok if it increases more than this an doesn't appear to be stopping you have a problem that needs investigation. You system should not blow up once you get over about 2.5 bar the preesure release valve will start to leak and if you get near 3 bar it will vent water rapidly.
 
a1ex2001 said:
Follow my previous advice to work out what is actually happeneing, preesurise the system to bettween 1 and 1.5 bar and then run the heating while watching the guage if it goes up bettween 0.25 and 0.5 bar and then settles out you are ok if it increases more than this an doesn't appear to be stopping you have a problem that needs investigation. You system should not blow up once you get over about 2.5 bar the preesure release valve will start to leak and if you get near 3 bar it will vent water rapidly.
Click to expand...

+1
 
Our system sits at 1.5bar when idle. 2bar when running.

To the OP - you can come out from your pillow fort and take the collender off your head. You're going to be ok
 
BunnyKillBot said:
Have the radiators been bled for air lately? Give it a go and the pressure will drop to nothing again :p
Click to expand...

nope haven't for ages afaik

I might not even need to bleed them

what I don't totally understand is how is having say 2.0 pressure better than 1.0? will the system heatup faster with 2.0?
 
To hijack the thread like a boss my self and my mum have made a huge mess of our heating system and need some help thinking how to fix it.

Basically we installed a new shower 2 weekends ago, which went swimmingly, but forgot to turn our gas boiler off whilst the water was off. So what I think has happened is that the boiler has tried to put pressure into the heating system from the mains water and just pumped a lot of air into it. Now we are stuck with the upstairs not heating up properly and the boiler not having any pressure in it for the heating :(

Is there a fix that I can do this afternoon as the bathroom is cold and sitting on a cold toilet seat makes the event less good....
 
I shouldn't worry about it. I presurised our boiler a couple of years ago but didn't turn the valve off completely when I was finished. When I got back from work the next day water was trickling from the overflow pipe outside the house, but I don't think any lasting damage was done. The boiler still works now, anyway!

I just tightened up the valve and let some water out of one of the radiators until the presure dropped.
 
You must log in or register to reply here.
Back
Top Bottom