Air trapped in boiler - help please!

Kim_2

Hi,
I have a maxol microturbo 40h boiler. I think there is air trapped inside as it is making a terrible banging noise before switching itself off.

I currently have no heating or hot water!

I found an air vent at the very top of the boiler, so I bled this and only a tiny amount of air came out.

Anyone know how I bleed the boiler properly?

Thanks
Kim

Ken_40

Which side of the \"pond\"

do you reside in?

That's a Brit boiler. How many pounds of pressure does the gage say?

gman_4

sorry i dont even know this boiler,can i get a site?

Kim_2

boiler

I am in the UK. Thought this was a Uk site - sorry!

Pressure gauge has 2 hands red one is on 1 black one is on 1.5

Ken_40

No problem,

at least we speak the same language (sometimes)(;-o)

One of the hands is pressure in atmospheres (possibly Kpa or Yank: PSI's), the other is temperature. If the boiler is piped properly, and not leaking somehwere, you should have at least 1 whole atmosphere of pressure, and with the boiler acting as it is, should be OFF, showing whatever the temperature is in the area surronding the boiler; 55-70F?

An air "bleeder" should be on or near the top of the boiler as you already suggested. If the pressure is low, there's a reason for that, that needs to be fixed. You cannot bleed the air out (which you believe is the problem already - and are probably correct), until the water pressure inside reaches one atmosphere (14.7 Yank p.s.i)

Perhaps a local service company would be the best bet?

Let us know how it works out, please.

Kim_2

thanks

Thanks for all your help, think I will call in the pro's!!