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who me? I get it.

eh? No I don't get it! Surely the system is on a loop? In (trv) - out (locksheild) Boiler fires up when a temp difference between flow and return matches co-effiicent for set temp, thus the need for balancing.

ok got that, but why when the TRV was closed then opened did the flow warm up from the lock sheild valve side? If the locksheild is connect to the the return then that means that water is running in the reverse order surely, as there needs to be a feed to flow through the radiator. In this...

Thanks. So what do the lockshields do then?

Cheers, They are a drayton with arrows at 90 deg right angles - pointing down and to the rad. "The reverse flow body allows vertical or horizontal flow or return mounting."

What exactly do they do? My understanding was that they restricted the flow on the return. I have had the heating on today and was experimenting with my TRV's. I turned them off then on. The radiator heated from the oposite end to the trv. Is this right or has my plumber got it all the...

Thanks for pointing that out Agile. So.... this is a known problem if you know that it lasts 3 secs? Is there anything that can be done? I can understand a bit of motor noise, but the grinding is rediculous.

I find my quarter turns are only noisy when water is not at full. Makes a hell of a racket. Ballofix is that the same as this? http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=100121&ts=41704&id=16505

sounds more like the diverter valve? My vaillant ecotec does this and vaillant "Engineer" says they all do that. What a load of ******.

why is this please?

What but that will reduce my pressure, or, will it?

so do focus.

OK! :roll: Just to complicate things I have a timer t140 on the boiler. This vrt230 thing seems to do the bizness, can I loose the t140?

up to 1.5 m can be 15 mm any more will have to be 22mm

Thanks. Was it on their property? Cheers

yep, chers. trouble is the tacks split the quad.

Has anyone had this problem before? I can't seem to get Vaillant to acknowledge there's a problem. I can here the piezo motors then the grinding. IT AINT RIGHT I'M TELLING YO!

Sine I have an old thermostat I don't think the ebus bizness is of any usefulness is it? I dunno, I just want a gadget to control my heating from the living room instead of having to dart in a dark cupboard and fumble with the lack of a backlit disply (what an oversight on a modern appliance)...

Hi, What is the best way of fixing quadrant to woodblock arnished flooring and painted kitchen kirting? Will no more nails do, or would pva be better?

I've done alot of late shifts lately. I don't even want a 360 its a 230 I need! :oops: Better install instructions... Don't ask me where I got 3 & 4 from, I just read the manual again :oops: Man.... :lol: