We bought and moved into a house 2 and a half years ago.
The house dates from the 1980s and is located in 02. The insulation seems rather average. The surface is 260m² spread over 2 floors + a heated basement. Heating is by radiator. There are a total of 17 radiators including 3 in the basement.
This house is equipped with an Okofen PES25 + DHW boiler, a 7-ton textile silo and a room sensor. In summer, the boiler is shut off and the DHW runs on electricity.
We arrived at the end of winter in the 1st year (2019) so the pellet consumption was low. In addition, this year, winter was short so let's forget about this year.
We consumed around 7 tonnes of pellets in the second year. The room sensor was positioned in a corridor facing a radiator. It was rather cold throughout the house so to reduce the effect of the radiator, I reduced its operation by the thermostatic valve. I think that is already a mistake on my part. The room sensor is now positioned in the living room.
Around this time, I started to read the different forums talking about Okofen boilers on https://www.econologie.com and forums.futura-sciences.com. One user mentioned csv files recoverable via http. So I, through a Raspberry, started to recover the files every day to be able to analyze them.
By looking in the CSV files, I realize that at home, the flow temperature in the heating circuit is not permanently the result of the theoretical calculation of the water law but a value which is 8 ° C. either 30 ° C or 60 ° C or the famous calculation (roughly because the correction of the room sensor is 5 so mathematically, I do not find the same values). In addition, the temperature of the boiler frequently drops below 60 ° C and I'm afraid for its lifespan. The comfort period is from 5 a.m. to 30 a.m. and from
16h to 22h.
Here is what I observe:
I do not know the default values of the boiler parameters. I do have documentation but it does not indicate them. I imagine the installer must have made some adjustments to make it work at home, but I don't know what he touched.
Here are the current settings:
- Boiler Min temperature: 60 ° C
Installation Max temperature: 75 ° C
Max flow T: 60 ° C
T start Min: 30 ° C
Foot of curve: 35 ° C
limit ext comfort: 18 ° C
reduced outdoor limit: 14 ° C
Anticipation time: 90min
Ambient horn: 5
Power Level: 25 (I'm assuming 25 kW).
Are there others missing that I forgot and that are important? I have access to the technician menu via the code.
Does this mode of operation seem normal to you? By traversing different forum, I haven't seen curves like this.
Thank you in advance ^^
I did not find any subject in this forum which is identical to mine.