Very Puzzling

[bri8]

Hope someone can help.

My combi boiler (which had been losing pressure) was serviced last week. The engineer replaced a prv(?) and charged the expansion vessel. I had a radiator removed today. A few hours after the radiator was removed, there is no pressure in my central heating system. Each time I try to increase the pressure, it momentarily rises and then quickly falls back to zero. Any ideas?

 

[bab]

The water u are puttin in is goin smoewhere . Find it & your half way there.

 

[ollski]

Who drained the system to fit the rad?, I'll bet it was done through your new prv....take a look at the little copper pipe outside, if it's dripping then it's time to get another new one fitted

 

[bri8]

Thanks for the replies. My joiner removed the rad and I'm not sure how he drained it. Each time I try to add pressure the water is draining from the pipe on the outside wall. Why would removing a rad have this effect - are Vokera combi's so senstive?

 

[bab]

Sounds like i may have let the pressure off with the pressure releif valve isde bottom of boiler . ask him. if u can find it try turning it untill it jumps then repressure system.

 

[Paul Barker]

ollski just told you, read his post again. New prv AGAIN, and next time don't let a joiner near it.

 

[bab]

Its flowing down the wall not dripping!

 

[bri8]

Thanks again for the replies. Much appreciated.

When my joiner removed the rad, he never went near the combi bolier. He just closed the valves on the rad, removed it, and blanked the pipes off. Why would this have caused a problem with the boiler?

 

[bab]

Thanks again for the replies. Much appreciated.

When my joiner removed the rad, he never went near the combi bolier. He just closed the valves on the rad, removed it, and blanked the pipes off. Why would this have caused a problem with the boiler?

If that is what he did there should be no reason why that should cause what has happened. does the rad he took off have a thermostat on it . do all other rads have thermostats on them.?

 

[bri8]

There are no thermostats on any of the rads in my house. The rad that the joiner removed was in an internal box room and had not been on in eight years.

 

[bab]

well point in question is why is the pressure relief valve p.i.s.s.i.n.g down the wall. hav u tried turnning the knob on the valve to reset it,

 

[kevplumb]

or try taking the fill loop offf

 

[bri8]

How would I reset the PRV and how do I find it? Thanks again.

 

[bri8]

How would I take the fill loop off? Thanks again.

 

[kevplumb]

unscrew it from the valves