2006-10-27 12:03:46 · 8 answers · asked by NIcole 1 in Home & Garden ➔ Maintenance & Repairs
I presume you have a combi boiler.
You will need to bleed some water off from the radiators if the system is overpressurised.
You need a rad key to undo the bleed valve (in the top of the rad at one end) which is square shaped.
Drain off water while somone watches the gauge until your pressure drops to the recommended setting.
Hope this helps
2006-10-27 12:14:29 · answer #1 · answered by jixer 3 · 3⤊ 0⤋
Are you sure the pressure is at 4 bar? The pressure relief valve should blow the water out of the boiler (through a pipe that goes through the wall to outside) when the pressure goes above 3 bar. Some older pressure gauges have a pointer on them that is there just as an indicator of what the pressure is set at, if the middle of the pointer is through the gauge and has a screwdriver slot in it, this is what it is. If not you have a problem.
If you or someone else has recently repressurised the system, make sure that one of the valves on the filling loop has not been left on, also remove the filling loop (and keep it somewhere safe!) so this can't happen. Jixters answer is the easiest way to relieve the pressure but make sure your heating is off when you do it, and have a towel handy! Also make sure the heating system is cold when you do it, as the pressure increases when it's hot and you need to know when you've got 1.5 bar.
2006-10-28 16:02:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You have to either bleed a lot of water froma radiator, till it drops to the required pressure, usually 1.5 bar. Or is you can find the blow off/ pressure relief valve, a small lever or knob below the boiler, open this slowly for a few seconds watching the gauge at the same time.
2006-10-27 22:17:53 · answer #3 · answered by jayktee96 7 · 0⤊ 0⤋
For Gawds sake don't take any notice of Flash mp1!! Ipresume you are in the UK, as this is a UK and Ireland site. So you will not have steam heating as suggested by Rashirley, and so I presume you have a combi boiler system and the pressure gauge will be reading in bar NOT lb. per sq. in. Read Jixer's answer. That's the best. Need to drop it to between 1½ and 2 bar when cold. Pressure will rise when system is heated up.
2006-10-27 20:47:09 · answer #4 · answered by Anonymous · 0⤊ 1⤋
As a heating tech, I employ you to follow these steps.
A lot depends on what type of heating system you have.
Is it steam or hot water?
Is this a high or low pressure system?
Do you have in floor heat, or radiators?
How old is this system?
If you do not know what your doing, you could seriously damage the system, and either hurt, or even kill some one.
This is not a toy or something to fool with if do not know what you are doing.
Play it safe, and spend a coupe of hundred dollars to have a professional heating tech come out and check your system.
Have the tech show what, if any thing, you can do to keep the system running smooth.
Good Luck.
2006-10-27 16:46:25 · answer #5 · answered by USMC Rando 5 · 0⤊ 0⤋
It should be on 1.5 bar, I think you need to bleed your radiators& then re-charge your system. If that doesen't work ring your local heating engineer.
2006-10-27 12:12:32 · answer #6 · answered by Anonymous · 0⤊ 1⤋
the pressre in your system should be about 2 bar, it really depends on what bolier you have
2006-10-27 12:12:27 · answer #7 · answered by Anonymous · 0⤊ 0⤋
your pressure needs to be 10-15 lbs....
raise the pressure not lower it.. assuming your in canada...
if your in the uk different stuff for different folks.. calla tech dont come here
2006-10-27 16:11:29 · answer #8 · answered by flashmp1 3 · 0⤊ 3⤋