Home Automation Domotica Forum Europe, Bwired Forum

As promised, an update of my findings on changing the capacity of my Remeha Tzerra Plus boiler. After lowering to 70% I did not notice much effect, so i further lowered to around 40%. The most noticeable effect is that the modulation (on average) seems a bit higher. I assume that, as the max is lowe...

It seems to be working! :) 13:03:37.208919 PR: A=OpenTherm Gateway 6.5 13:09:34.065110 Command: TP=11:17=50 13:09:34.163882 00000000/00000000,10.00,00000011/00000011,0.00,0.00,0.00,0/0,20.00,0.00,0.00,0.00,0.00,20.00,53.86,0.00,0.00,52.89,0.00,0,60/40,0/0,60.00,TP: 11:17=50 13:11:03.831159 R900B1132...

That would be great, i'm very curious if i can further optimise the boiler by lowering the capacity. The (cleaned up) logging result of PM=10 10:01:19.093455 Command: PM=10 10:01:19.141427 PM: 10 10:01:30.415700 R000A0000 Read-Data Number of TSPs (MsgID=10): 0 10:01:30.567484 BC00A2D00 Read-Ack Numb...

Interesting, i will look into your work in progress. Thanks for sharing! Below the graphs for Max Modulation and Modulation. My gas usage is showing my floor heating is constantly using some gas during the day, the MM is most of the time either 0 or 100, the Modulation is almost always 0 (except for...

First of all, you are of course right about the MM is 100 in the summary. So it is in sync :-) Now knowing the Max Relative Modulation and the Relative Modulation are both dynamic values, it makes me wonder what they are and what the difference is. I've read some OpenTherm documentation, but could n...

Thank you hvxl for your extensive answer. That really helps to understand the data. I think i misinterpreted Max Modulation. I assumed i could set/limit the maximum capacity of the boiler and that it was a fixed setting, so something like the CH max water setpoint. I've improved the isolation of my ...

Hi all, Since a couple of months im using the OTGW monitor to understand and to optimise my boiler. I was playing around with the Max Modulation, trying to set it to 70% (MM=70). I have a Remeha Tzerra (classic/old) and an EvoHome thermostate. As i understand they both support MSG14 / MM setting. Bo...