THZ / LWZ Tecalor Stiebel Eltron Heizung

[Jakl]

Who have also an inside temperature sensor installed, not the inside controller? Or does anybody know, which low cost sensor I can install? Link?

[houseowner123]

Not sure what you mean with controler. But I order and successfully installed this one.

http://www.sensorshop24.de/Sonderposten/Kabelfuehler-mit-verschiedenen-Sensoren/Kabelfuehler-mit-KTY/Kabelfuehler-mit-Knickschutzfeder-6x30-KTY-81-210-2-5-Meter-PVC.html?listtype=search&searchparam=SO617

It doesn't get much cheaper unless you want to solder the sensor yourself onto a cable.

Tom

[houseowner123]

heating curve is visible again after update to 0.100. Red dot fits curve perfectly - at least with currently warm outside temps.

I never see the red dot. The red dot point seems to fixed for me at 8°C. Since it is not heating time rihgt now, I am not worried about it.

[immi]

Dear all

v0.101 has been uploaded, you can download tomorrow.
- no new features
- lots of clean up
- logs in verbose 5 implemented.
- buffer overflow (caused by sGlobal for LWZ 303 firmware 3.19). has been fixed.

Lots of code has been improved, based on the precious feedback from Jakl.
Please test all feature that you can.

If I get positive feeback, more upgrade are on the pipeline.
Jakl has suggested some more changes, which will make 00_THZ more reliable and efficient.
thanks again for helping.
immi

[micomat]

just updated the wiki.
unfortunately there is less time at the moment, so i just added info from 0.099 to 0.101

thanks for the work @ll

[immi]

Dear all
I noticed that Tom installed a inside room temperature sensor.
With this sensor makes very sense to use the P15 different from 0.
Willy uses P15 = 50%.

Now both Tom and I have P19  at 30%, ( normal setting with thermostates)
What happens if we set both P19 and P15 to a value different from 0.
Apocalypse,  frogs falling from the sky?

immi

[micomat]

Apocalypse,  frogs falling from the sky?

immi

Tell me if so Sounds like great Fun!
by the Way i miss the Parameter to Set the Solar temp (60° default). any Chance to find it?

markus

[willybauss]

I have P19  at 30% as well. Don't know if it makes sense to change it. Setting it to 30% means that 70% of the heatTemp calculation are influenced by return temperature, 30% by flow temperature. I believe that the return temp is a better indicator for the *real* temperature of the stone floor than flow temp. Therefore the 30% setting makes sense.

@ immi:

Setting P15 to anything different from 0 doesn'tmake sense as long as there's no inside temp measurement available. Worst case the calculation takes the default value (-60°C) into account ... 

[immi]

Setting P15 to anything different from 0 doesn'tmake sense as long as there's no inside temp measurement available. Worst case the calculation takes the default value (-60°C) into account ... 

I know, I did not mention that I am going to buy a temp sensor this winter.

p.s. have you tried v0.101? do you see anything strange?
immi

[willybauss]

p.s. have you tried v0.101? do you see anything strange?

Sorry, I didn't update yet. Will try within next few days.

[Jakl]

Not sure what you mean with controler. But I order and successfully installed this one.

http://www.sensorshop24.de/Sonderposten/Kabelfuehler-mit-verschiedenen-Sensoren/Kabelfuehler-mit-KTY/Kabelfuehler-mit-Knickschutzfeder-6x30-KTY-81-210-2-5-Meter-PVC.html?listtype=search&searchparam=SO617

It doesn't get much cheaper unless you want to solder the sensor yourself onto a cable.

Tom

Hi Tom,

must it be a KTY sensor? Can I find this information anywhere in the documentation of the THZ/LWZ?
I think to use one of these:
http://www.fuehlersysteme.de/raumtemperaturfuhler.html
or
http://www.fuehlersysteme.de/unterputz-raumtemperaturfuhler.html

Jakl

[micomat]

0.101 installed, runs without any problems

[willybauss]

Hi Tom,

must it be a KTY sensor? Can I find this information anywhere in the documentation of the THZ/LWZ?
I think to use one of these:
http://www.fuehlersysteme.de/raumtemperaturfuhler.html
or
http://www.fuehlersysteme.de/unterputz-raumtemperaturfuhler.html

Jakl

No matter what you use mechanically, BUT electrically it has to have the same characteristics (= resistance vs. temperature diagram) than the one mentioned by Tom (KTY 81- 210). Otherwise the measured temperatures are wrong.

[Jakl]

No matter what you use mechanically, BUT electrically it has to have the same characteristics (= resistance vs. temperature diagram) than the one mentioned by Tom (KTY 81- 210). Otherwise the measured temperatures are wrong.

Hi willybauss, hi Tom,

I asked Stiebel Eltron and they told me, I should connect a PT1000. But the PT1000 have different resistance then a KTY 81-210. So when Tom uses a KTY 81-210 and it works, should I order a KTY 81-210?
Do I also need to take care off the cabels or is it ok if I use a simple 2-wire cable like that: http://www.sensorshop24.de/Kabel-Leitungen/PVC-Leitung-2-Leiter-35-C-bis-105-C.html
Best regards,
Jakl

[houseowner123]

Hi willybauss, hi Tom,

I asked Stiebel Eltron and they told me, I should connect a PT1000. But the PT1000 have different resistance then a KTY 81-210. So when Tom uses a KTY 81-210 and it works, should I order a KTY 81-210?
Do I also need to take care off the cabels or is it ok if I use a simple 2-wire cable like that: http://www.sensorshop24.de/Kabel-Leitungen/PVC-Leitung-2-Leiter-35-C-bis-105-C.html
Best regards,
Jakl

Just wondering why I documented all the sensor steps here and it is still not clear?
PT1000 is a collector sensor.  Look at page 36: http://www.stiebel-eltron.de/imperia/md/content/STIEBELELTRON/de/Fachpartner/Fachinformationen/Downloads/Gebrauchs-und-Montageanweisungen/04_lueftung/15_zentralsysteme/166459-35726-8545_lwz_303-403_de.pdf
PTC is the same as Aussenfühler=inner sensor. Then I looked in the table on that page and comapred the different resistance scale with existing literature and the ONLY scale it measures up to KTY81-210.
And that's what I wrote a couple of weeks ago after PT1000 did not work (which I also wrote about).
If you want to go ahead with what SE tells you...do it...but don't complain..because I told you so!

Tom