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I'm also using this combination: Honeywell Chronoterm Vision thermostat + UM7206 - Universal X10 receiver and it works fine. Sending B15 ON switches the Chronoterm into the preconfigured mode (18 degrees in my case).

</DJ>

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by DJF3-2</i>
<br />I'm also using this combination: Honeywell Chronoterm Vision thermostat + UM7206 - Universal X10 receiver and it works fine. Sending B15 ON switches the Chronoterm into the preconfigured mode (18 degrees in my case).

</DJ>
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">I don't have a lot of time and my city heating system isn't functioning very good at the time. So not really made any progress here. But since I do want control of the temperature and not too many different components I am thinking about buying the TXB16 http://shop.hal-europe.com/product_info ... cts_id=103.

It is the only X10 thermostat I can find which can operate by itself and which allows a temperature to be set using X10.

A thermostat like the digimax only transmits the selected temperature. It can not be set using X10.

I find the disadvantage in the system you also use, is that the heating fails when the X10 system fails.

The TXB16 is an independent wired system which can be used in itself. But can also be used to read the current thermostat temperature and set a new temperature. This way, I can automate it using the computer but when the computer fails I can still use the thermostat as a 'normal' thermostat. So no extra min/max thermostats are necessary.

One drawback is the price of nearly 300 [:(]. So it might take me some time to purchase it [:D]

It could work in case of cityheating , but if you have an opentherm system this sets you back a lot
If you replace the Honeywell with the TBX16 you are missing the schedules you can set like with the Honeywell.
Scheduling can be done from within Homeseer over the X10 but then your back to initial problem!

I don't know the opentherm protocol so I wouldn't know [:)] In my case, cityheating, it will work.

It will solve my problem. I agree that I have no longer the possibility of a schedule programmed in the thermostat instelf like the Honeywell does. But the schedule can be programmed in software (be it Homeseer or homewritten) with much more possibilities than the Honeywell can provide for.

And should the software fail, I can still operate the heating manually using the thermostat. This would only allow for one temperature, but that would be sufficient until the domotica server has been repaired/replaced.

I thought it would be nice to share my findinds for others in the same situation. It took me quite some figuring out and searching the internet before I came across the TXB16 which suits my needs.

X10 (or software controlled) thermostats which can work on their own are rare it seems.

But if the X10 fails (like you told can happen) and you are not at home, the heating stays On or Off.
But you can make some safety options in the software or something like that.

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Bwired</i>
<br />But if the X10 fails (like you told can happen) and you are not at home, the heating stays On or Off.
But you can make some safety options in the software or something like that.
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

No, that is what the TXB16 is all about and why it is my choice for the moment. It is not only a X10 thermostat, it is also an independent thermostat!

If X10 fails, the heating stays on the latest configured temperature and not just on/off. Because the thermostat is wired to the heating and can operate without X10 [:)]