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FS20 protocol.

Does everything your after.

Cheaper on ebay.de than on the conrad website.

Fon

You can save a lot of money going down the FS20 route.

Completely open using FHEM

Iv been running it for two years, and after the initial teething problems, its rock solid.

Fon

Having gone through this with several rooms, and a heat sensor I can move around the house, I realised it was trial and error.

I would move it, then offset the temperature, then move it again,...

Just make sure you buy the fht80 units for each room. You will also need an fht8r for each rad. Then you will know the temperature, and also be able to set it for each room.

You can get these...

The Conrad (ELV) system using FHT8R zone controllers post above is the fs20 system that I also posted , and WILL do what you want if you use FHEM

Fon

You could achieve this with an fs20 based system, but you would have to write your own module in a free app called Fhem.

The only way I can see of setting the top temperature would be to write a...

I have never known this to happen, but I did replace all of my valves with ones that didnt require the plastic adapter.

Maybe some paper on top of the rod will help?

Fon

The easiest way to install the fht8w is just to put it where your house thermostat is. It will just need the same wiring (in my case)

Iv never had problems with the fht8w hearing that it needs to...

They key is possitioning.

If you can get your central PC interface in the middle, and move all the room stats, you can get good coverage.

I personally have 6 room stats, and 7 rads.
...

I wouldnt chance 15 room stats with the conrad system,

Its starts really buckling at 10.

Fon

PS, all of this stuff can be found cheaper on ebay.de. But your have to find someone willing to post to the uk.

Fon

Take it one step at a time.

You need one of these packs for each room, ...

I use fhem (free) as my server, andfhem(free) as my app on my phone, and use wireless actuators that are fs20 based. All works very well, and very cheap.

Search this site for conrad fht theres...

I have the boiler interlock, its a peice of cake. Just wire it where your current thermostat is, and dont use the thermostat any more.

Fon

Good luck with that!

My system struggles with more than 8 FHT 8's. The problem is the radio frequency gets really busy and latency becomes a problem.

Have a look at the Cul devices from...

Read the article I posted above in full again.

It will explain how to test if the device is working, and when it is working under windows, it will tell you how to install the serial port in perl....

Guys try this in your config txt file

define WEB FHEMWEB 8083 global

Then in your browser open you local IP, with :8083 at the end.

Heres the best guide I found to setting it up.
...

It could also be that your TRV's are old, and the pin is sticking down,

Fon

Are you sure your radiators are balanced?

Take all the equipment off the radiators and make sure they all get hot at the same time, If they dont google balancing central heating.

Fon

Sounds knackered then mate,

Fon

Mine communicate fine at a far distance.

I do recall that after the units were paired, there was a period of time (up to 5 mins) where the the FHT8W would flash the number that had just been...

There about as loud as a mobile phone ringing on silent mode and vibrating on a table, maybe slightly quieter, but that should give you an idea.

Im very sensitive to noise, but have got used to...

Hi,

Iv been reading this thread and others for a long while, tested the conrads out in one room, was very happy and have done the whole house including the boiler connect.

I got a lot of info...