I have a Remeha Calenta 40C and the built in serial port provides plenty of information on the boiler operations. I have built and installed the. Return and DWH temperatures show for me (Calenta 40C), can you try using the originial OTGW monitor to see if these values are reported by. Calenta 28c Combi Comfort System. Calenta 40c Combi Comfort System manufactured by. Remeha B.V.. Apeldoorn, The Netherlands.

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Remeha Calenta 40c manual

Of course, if it was in the list, the DA command has now removed it. Yes Heat Demand from Modulating Controller[1]: Yes Heat Request Flags: Or, if the thermostat is placed at a wrong spot yeah sounds stupid Everything does what it should do.

This configuration resulted in a combined solar-thermal hybrid system. Looking at the Remeha Recom software, there are a number of really useful additions to the standard Opentherm messages that would make it even better.

The system is used for both room heating and domestic hot water. They have wanted a more sustainable home for some time. CRC check has also been added.

Screen Shot at For instance, by adding a context option like this: If that returns NF, then the ID wasn’t in the list. You’d need to change the code to work over USB. I do like the way the iSense is doing it Create a schedule program, for example ‘Normal’, or ‘Holiday’, Edit the schedule Monday Have now added code to populate devices in Domoticz and all working correctly.


So far, I’ve managed to sniff the correct HEX string to poll the boiler for data and receive a response. Succesful Development Kraus Installatietechniek is thrilled with Remeha solar systems: Residential Netherlands Not specified.

Kraus Installatietechniek in Zutphen provided them with the support they needed to have a sustainable home. Do we Can we want to control this?

Solar Plus 390, Zutphen

However now I would need some help with the reverse engineering of the work already done for the Calenta. Sofar this topic is really helpful. This was the first time we have installed this specific configuration by Remeha and the installation was flawless. Last edited by rjblake on Thu Nov 02, 9: No Mains Live-Neutral phase Detection: Is calrnta the temperature of water sending out?

Solar Plus , Zutphen – Fabrisolia

Has it a relation to the DHW? Best is to run the Recom software first to check the hex being sent to the Tzerra, check whick Recom XML file it is using and you may need to do some mapping. I’m not sure if the hex codes are the same for the Tzerra as they are for the Calenta, but you can try the PHP scripts on github I created.



In this new system by Remeha, the control technology, the tank, and its accessories are in a single module. If anybody can give me pointers how to accomplish that, please tell – what really would be cool is if logged values can be exported to Excel for further analysis. Blocking without Frost Protection Release Input: My boiler reports those.

Open Fan Speed setpoint: This is the same name as the Clenta file, which will give me some clues as to the format of the responses at least. Last edited by rjblake on Thu Jan 19, 8: How to get this working in Domoticz?

Counters Some sample runs of the PHP scripts on my boiler as below: How to i undo my action?