advice needed - new boiler installation

[Jobo74]

I recently had a kitchen extension done meaning I needed to re-site the boiler from its original position. The old boiler was around 18yrs old so decided to go for a new one.

I wanted to keep all the tanks so got a plumber out went through want I wanted and agreed on a price for fitting a new boiler and re piping as need to fit into the old system.

My expectation was that he would fit a system boiler, however he has fitted a bosch greenstar 24 junior combi boiler which he seems to have run as a system boiler i.e it heats the hot water in the tank.

Is this usual to do this? The installation was last june no real problems with and it works fine just seems like an odd thing to do. Also not had any building regs certs for the work (he is gas safe registered) chased him a number of times but seems uninterested/unwilling to provide

any advice welcomed

 

[ecowarm]

does the combi supply at least one tap?
And welcom to the forum

 

[Jobo74]

No, no taps. just one pipe in and one out to hot water cylinder/heating there is a two way valve in the airing cupboard. Pressure reader is at 0

 

[SafeGasInstall]

seems odd , have you been to www.gassafe.co.uk

 

[Jobo74]

yes have checked out gas safe nothing on this specific issue but he is registered on there.

 

[Billy Bob Bob]

it is possible to use a combi like this but normally at least one tap comes off it

 

[GQuigley67]

one pipe out and one pipe in ??? doesnt sound like a combi to me, a combi should have 6 pipes which are condensate, flow, hot, gas, cold, return(worcester junior order from left to right)

 

[gassafe]

one pipe out and one pipe in ??? doesnt sound like a combi to me, a combi should have 6 pipes which are condensate, flow, hot, gas, cold, return(worcester junior order from left to right)

... 7 if you include the safety relief pipe =]

 

[SafeGasInstall]

can you get as a image please .

 

[GQuigley67]

yes but safety pipe goes straight outside usually so i left that one out