I'm using and testing this system from about 15 days.
On my radiators I've classical thermostatic valve and never changed setup in this 15 days. (Most of them are on position n°3)
Starting the system when room temperature is 19.7° C (VSmart placed in the coldest room, setpoint 20.0 °C, heating curve in the app 1.8, hysteresis algorithm), in about 30 minutes my flow was 56-57°C and return about 38-40°C; in this condition the boiler modulates about 30-35% : a great result!
But from today in the moring, in the same time (about 30 minutes power on), my temperature flow was 66-67°C, return 40-42°C, and the boiler modulates about 65%.
In the app, the alghoritm was changed to advanced (I think it finished autolearn, but I don't know when is automatically switched), so I put back on hysteresis.
But in this evening, using same test parameters (starting from 19.7 for about 30 minutes) I've got again "high" flow (66-67°) and lower modulation ratio again : 65%. This evening the external temperature in the app was 11°C (...and I think it's not so different form yesterday evening)
I never changed installation parameter from the boiler dispaly (so i.e. D.071 is 75°C)
What's happened?
P.s. in according with the manual (pag 28 italian version https://www.vaillant.it/downloads/v...-installazione-ecotec-plus-vm-vmw-2248943.pdf) if i search 11°C on 1.8 curve, I read flow about 45°C
On my radiators I've classical thermostatic valve and never changed setup in this 15 days. (Most of them are on position n°3)
Starting the system when room temperature is 19.7° C (VSmart placed in the coldest room, setpoint 20.0 °C, heating curve in the app 1.8, hysteresis algorithm), in about 30 minutes my flow was 56-57°C and return about 38-40°C; in this condition the boiler modulates about 30-35% : a great result!
But from today in the moring, in the same time (about 30 minutes power on), my temperature flow was 66-67°C, return 40-42°C, and the boiler modulates about 65%.
In the app, the alghoritm was changed to advanced (I think it finished autolearn, but I don't know when is automatically switched), so I put back on hysteresis.
But in this evening, using same test parameters (starting from 19.7 for about 30 minutes) I've got again "high" flow (66-67°) and lower modulation ratio again : 65%. This evening the external temperature in the app was 11°C (...and I think it's not so different form yesterday evening)
I never changed installation parameter from the boiler dispaly (so i.e. D.071 is 75°C)
What's happened?
P.s. in according with the manual (pag 28 italian version https://www.vaillant.it/downloads/v...-installazione-ecotec-plus-vm-vmw-2248943.pdf) if i search 11°C on 1.8 curve, I read flow about 45°C
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