High Boiler Pressure

Posted by corcak on January 19, 2006, 7:11 am

My Central Heating Boiler usually runs @ 1 to 2bar but now is @ 4 bar.
How do I reduce the pressure.

--
corcak

Posted by Edwin Pawlowski on January 19, 2006, 11:44 am

> My Central Heating Boiler usually runs @ 1 to 2bar but now is @ 4 bar.
> How do I reduce the pressure.

I hope you mean 0.4 bar and not 4 bar. Most residential heaters are
supposed to be less than a bar. Shut it down and call a repairman. Thee is
a pressure switch that may be out of adjustment or may have gone bad and
needs replacing. If It is 0.4 bar, you are in safe limits, if it is 4 bar,
the pressure relief valve should have gone off.

Posted by Speedy Jim on January 19, 2006, 1:58 pm

corcak wrote:

> My Central Heating Boiler usually runs @ 1 to 2bar but now is @ 4 bar.
> How do I reduce the pressure.
>
>

Post to this group: UK.D-I-Y

Posted by Sir Topham Hatt on January 20, 2006, 12:10 am

Probably a bad expansion tank or pressure reduction valve.

>My Central Heating Boiler usually runs @ 1 to 2bar but now is @ 4 bar.
>How do I reduce the pressure.

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