Recent content by brighton68

Condensing Boiler Type WB2B 8.8-35.0 kW The required boiler output from your link is 13.37kW

D_Hailsham - It's a Vitodens 200-W. TRV's are always on max because none of the rooms ever get too warm...its a Victorian Mid Terrace, so not eco insulated like todays houses - guess I shouldnt have bothered with TRV's

Alec1 - the replacement boiler was connected to an existing system, some of it looks like 22mm, but I think thats the Hot Water Circuit.

I'm guessing so.....i've not got as far as lifting carpets/floorboards etc at this stage.

I have followed these instructions implicitly. When I fire up the boiler all the radiators heat up except four of the five on the lower ground floor. If I close the LS valves on all the radiators on the 3 higher floors, those 4 then heat up (though very slowly) - Any ideas?

I have a Viessmann Boiler installed (on the lower ground floor) that provides for 14 Radiators (all fitted with TRV's - that are always on max anyway) of various sizes throughout a 4 Storey House. 5 on the lower ground floor, 5 on the ground, 2 on 1st, 2 on 2nd. The bathroom radiator runs...

I have two of these that appear to be stuck ie the rad heats up even when the TRV is switched off. The problem is, I cant see a way to remove the cap etc. to un-jam the pin. Any ideas?

Problem solved! I have now refitted the aav with an elbow so its sits vertically and hey presto, the system operates fine. I was wrongly advised in the plumbing merchants that "this one just screws straight into the rad" Thanks for your posts, Dave(gas4you).

I replaced the aav with a new one but this has not resolved the problem of the upper half of the rad remaining cold. Any suggestions as to what to try next?

I think it's a sealed system (there is a red expansion chamber next to the boiler) I isolated all the other rads in the house except the one with the aav (in a dormer bedroom) ran the system for an hour and the top half still stays cold) Does this mean the top of the rad is just full of air? -...

This one has a screw on metal cap - I guess it might be quite old. Sounds like it should maybe be replaced. Is it as simple as turning off both valves, unscrewing it and screwing a new one in?

Why do I have a Flamco Flexvent in place of a bleed valve on one of my radiators? The radiator in question needs bleeding ie its warm at the bottom and cold at the top, but clearly there is no way to bleed it...