No hot water following draining of combi boiler

[katewest]

Hi
Having been installing a kitchen with friends.
When we came to looking at the plumbing it became apparent that when they did the kitchen before they had not installed any isolator valvles or the like.
I have an oldish combi boiler - IKON23.

My friend who has done lots of plumbing was helping with this and he is not sure what to do now.

we drained the water from the taps after turning of the main inlet to the flat and then we have fitted new pipes with isolator valves ect.

when the mains were turned on again the boiler no longer fires up when you turn the hot tap on, in addition there seem to be pressure building up in the hot tap so you get high pressure initially which then reduce over 1-2 mins.

Just a note - the boiler haapily fires up when you turn the heating on.

Any ideas what to do or will this be a very expensive kitchen???

Thanks

Kate
PS - my mum is arriving from Denmark today and it looks like we have have to relocate to a hotel ....

 

[greemyamochop]

Sounds possibly like you might have the hot and colds wrong going to the boiler from what you have said, follow the main from where it comes into your flat and triple check it goes onto the inlet side of your boiler

 

[twgas]

When you say the pressure reduces do you mean it all but stops?

 

[katewest]

Hi again,

There is theroretical possibility that we could have got it wronmg, but my friends dad triple. Checks every thing.
And no it flow does not stop completely, and you can hear water going through the boiler.

Kate

 

[greemyamochop]

It is the most logical out come to me from what youve said about the work done there.

Ive known established engineers get it wrong who should know better so dont rule it out.

Have a look and get back...

 

[corgiman]

are all the hot taps affected?

does the cold tap in the kitchen have a drop in pressure as well?