Boiler water pressure

timmyj

Hello,

no idea if this is the right forum, but there seem to be a few similar-ish queries, so wondered if anyone here would know.

Domestic combi boiler was working fine, paranoid housemate decided 2 bar of pressure was too much when the heating was on, so turned the little tap to "release" some water...

And now, there is no pressure in the system at all. So not heating or hot water. Not exactly ideal at this time of year.

Anyone know what I need to fiddle with to repressurise?

Unit is approx 10 years old, a Celtic "FF" it reads on the front, and Celtic "plus" inside. I've found a "user manual" at http://www.chaffoteaux.co.uk/uploads/img4296e5e815d481.pdf

but it doesn't tell me how to repressurise the system.

Any ideas !?!?

Thanks,

Tim

lomb

tap in the hotpress cuboard probably, if u turn it anti clockwise and its the correct tap, ul hear a hiss and the system repressurising.
alternatively it mite b near the boiler, turn all taps on all pipes u can find anticlockwise till u hear the hiss.

the only other thing is that some older houses dont have a tap, but have a tap with a water outlet and a valve that takes water, useually in hotpress or beside boiler. u connect the two with a filling loop(esentially a 1 foot flexible pipe ) and open the tap and the water will fill the circuit. then u disconnect the pipe. this was done for some safety reason. if u have this set up ul know it, when u open the tap water will gush out.. buy a loop tomorrow in band q etc if its this set up.

ul need to bleed the rads of air later to fully fix the system. but finding and opening the tap is the key tbh.

also try under the sink or in the attic if all else fails. but the hotpress is where it should be 99% of the time. just open all taps u find, they should all be open anyway so finding it shouldnt be hard. u can then leave it open or close it after the system is full, either way has advantages and disadvantages..

timmyj

Cheers for the swift response,

turned the only thing that would go clockwise, and according to the manual it was the gas supply... WHoops.

Any ideas how I get the pilot light back on? Switch turned back to "on", and there's an ignition switch which the manual (linky shown in last post) says will fire after it's been held in for a few seconds.

No it doesn't !

Ideas on that one !??!

timmyj

Bodging has got the pilot lit, now just off to find the pressure valve!

greglo23

the pressure in your system is produced by air as you cannot pressurise a liquid so maybe your pal left the air out of the tank !

JamesM

greglo23 wrote:

the pressure in your system is produced by air as you cannot pressurise a liquid so maybe your pal left the air out of the tank !

Tim,
The system is pressurised by letting in some water.
Listen to Lomb up above and try to pressurise your system that way.
Jim.

lomb

timmyj wrote:

turned the only thing that would go clockwise, and according to the manual it was the gas supply... WHoops.

i did say anticlockwise not clockwise, u need to relight the pilot light probably:D
if the yoke is not reigniting, its shagged. unless u feel comfortable around gas boilers its probably time to call bord gais repair dept, they are very reasonable and will fix ur pressure problem also.