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Thanks All for replies - I phoned the service company who were a little bit cagey, so phoned the manufacturer end-user technical line and after a few emails and phone calls, unearthed some interesting information as follows - RE casing insulation - as I understand the tech. support chap -...

Hi All, My parents boiler recently had an at risk warning/advice note from the service engineer due to the front casing insulation being incomplete i.e. it has perished. I had a look at it myself, and it has indeed perished where it is in close proximity to the burner, but as far as I can...

Russell, If it is like a standard 3-way diverting valve, from memory, I think it turns through 90 Degrees stroke to stroke, at one extreme it is on hot water only, at the other extreme it is central heating onlly and at mid-posiiton (I believe this is what you are describing as 12 o' clock)...

Replaced tap, like for like, no more hammering! :D Thanks again. Didn't try hitting them with a plumber's bill, the lady on returns was too nice, and I couldn't get into irrate customer mode!

Hi Russell, Sounds like the valve should go all the way over to W if only hot water demand is present, as you suggest. Assuming your system is "Y-Plan" i.e. hot water from the boiler is diverted to the rads or cylinder or both, depending on demand, by your Ikon 3-position diverter valve, I...

Ok, I'll give it a go! Thanks again.

Thanks Cider, looked at a tap at a commercial clients site today and it too has "float" i.e. you can reduce the water flow by pushing down on the stem, but it works fine with much higher pressure water with no hammering at all. Trip back to B & Q I guess, but first I'll have to clean all the...

Hi All, Just replaced hot and cold taps on really old basin, but new cold tap does odd things - a) When turned on to low flow it lets water out then stops water flow on its own accord, b) On certain settings and when turning off it hammers On closer inspection, the new tap, which is...

Hi All, I'm looking at having a lean to garage installed down the side of my house. I've laid a concrete slab before, but the querie is - can I leave the existing sloping concrete drive in place and simply lay a level concrete slab on top? I assume the driveway was intended for cars as it...

Thanks for the info Simon.

Agreed, but we're talking about a few weeks in this case.

Don't think it's anything to do with heating capacity of boiler, should be plenty for 3 bed flat anyway as far as central heating is concerned (hot water capacity is another issue). A leak from anywhere in the system would cause the problem (boiler, rads, pipework) so have a good look around...

Simon/Dave You're absolutely right, I've just seen the "Max. Advance Heating Time" setting in the manual. I don't know why they don't big up the optimisation function more in the sales literature, I would say it is as big a selling point as compensation. It also doesn't mention it in the...

Thanks Simon, good advice as we are going to extend soon. I had a good look at the VRC430 instructions and couldn't see anything RE optimisation, will have another look, maybe I'm reading it wrong. I was thinking of fitting it in the boiler and using the RF stat to save cabling but I can...

I've got a similar system and fitted a 28mm zone valve to DHW cylinder (they are quite pricey BTW). Works OK. Also fitted a Danfoss wireless control pack at the same time which works well. I also fitted an electric immersion heater to the cylinder which we use in the summer because - a)...

Thanks for the reply. I understand what you're saying, but I was specifically thinking about in the morning when it's cold and the heating needs to pre-empt the start time in order get to temperature before people get up. I suppose you could set the compensator to always start 1/2 hour before...

Hi all! First thread, please be gentle with me! I'm in the process of choosing a new combi to replace a Baxi Bermuda back boiler (which is still going strong after goodness knows how many years) I'm thinking of ordering a Vaillant EcoTec and would like to fit an outside sensor and...