PID algorithm

Tips, tricks and frequently asked questions
zuzzu79
Posts: 1
Joined: 14 Dec 2014, 21:24

Re: PID algorithm

Post by zuzzu79 » 14 Dec 2014, 21:29

Hi,

my thermostat is online and working from 2 weeks and the PID functionality is still not available.

I have switched on the anticipation functionality. Does it work if I keep the temperature constant across the 24 hours? The heating system is based on gas and low temperature floor.

My thermostat serial number is:j062ba6.

thanks a lot,

Alessandro

Gaby-Netatmo
Posts: 309
Joined: 07 Jan 2014, 11:47

Re: PID algorithm

Post by Gaby-Netatmo » 15 Dec 2014, 11:02

Hi Zuzzu79,
The prediction option proposed by the Thermostat Netatmo is activated only to reach a higher set temperature.
If you keep the same temperature, the prediction option will not be used.
Concerning the advanced regulation algorithm (PID), when you keep a constant temperature, it is a difficult to compute conveniently the required parameters.
In your case, I advise you to keep the current hysteresis mode because:
-Your heating system and your house have a very large inertia.
-The measured temperature is always very close to the set temperature.
- Low number of ON-OFF switches: 2/day in your case.

Thank you
Gaby-Netatmo

deadoc3
Posts: 24
Joined: 15 Dec 2014, 22:52

Re: PID algorithm

Post by deadoc3 » 22 Dec 2014, 11:12

Good morning, I join in this discussion to understand myself operation Pid. I installed the NetAtmo Thursday and yesterday evening I had available Pid, ​​I then turned and saw that my daily schedule has not changed. But this morning I like switch-on time of 6:15 to 7:15, then I saw that the boiler started at 4:30 to go off at 6, then on again at 6:50 and off at 7:50. I ask you to explain the operation but hoping not to consume more than all'interesi classic. thank you

deadoc3
Posts: 24
Joined: 15 Dec 2014, 22:52

Re: PID algorithm

Post by deadoc3 » 31 Dec 2014, 10:08

Good Morning
I set the program PID; the night temperature is 17 degrees chosen by me, but I see in the morning that the PID reprograms to 18.5 and then the boiler stays on intermittently from 4:30 around on, but I have set the 18.5 I want them at 8 morning.
Please let let me know if something is wrong, because to me no good to have the boiler on 4 to 8 while I sleep!
Serial number:
j065a32

Otherwise seems better off PID.
I look forward to more.
Thank you
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deadoc3
Posts: 24
Joined: 15 Dec 2014, 22:52

Re: PID algorithm

Post by deadoc3 » 31 Dec 2014, 10:12

I enclose also my programming.
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dangze
Posts: 1973
Joined: 17 Dec 2013, 17:29
Location: Lyon l'hiver - Olympiada/Ptolemaida (Grèce) l'été...

Re: PID algorithm

Post by dangze » 31 Dec 2014, 11:21

deadoc3 wrote:Good Morning
I set the program PID; the night temperature is 17 degrees chosen by me, but I see in the morning that the PID reprograms to 18.5 and then the boiler stays on intermittently from 4:30 around on, but I have set the 18.5 I want them at 8 morning.
Please let let me know if something is wrong, because to me no good to have the boiler on 4 to 8 while I sleep!
Serial number:
j065a32

Otherwise seems better off PID.
I look forward to more.
Thank you
Is the prediction option activated ? If yes, everything is normal !!! You can desactivate it if it's not convenient for you...
dangze - Modérateur du Forum (mais pas de Netatmo)
Therm. 1 : j033eac (versions 69/169) en Grèce
Therm. 2 : j23b946 (versions 69/169) à Lyon
Stat. météo : h0303da (versions 44/132/18) en Grèce

deadoc3
Posts: 24
Joined: 15 Dec 2014, 22:52

Re: PID algorithm

Post by deadoc3 » 31 Dec 2014, 12:23

I enable the option "forecast" and "anticipation", but anticipate the lighting of 4 hours seems a bit too much.

dicdastardli
Posts: 3
Joined: 06 Jan 2015, 15:52

Re: PID algorithm

Post by dicdastardli » 06 Jan 2015, 15:57

Hello,

how long does it takes to have the pid algorithm active? How can I see if it is active? my serial is J062974.
Thanks

Algirdas
Posts: 11
Joined: 25 Nov 2014, 20:40

Re: PID algorithm

Post by Algirdas » 06 Jan 2015, 16:35

Hi,

I have few questions. I have thermostat (S/N: j04143e) set on PID mode, also i have 3 radiators with thermostat valves in the same room as thermostat. Could you check is my setup correct and give some advices if not:
Netatmo thermostat set to PID mode and ALWAYS to keep 20 C. I think allowing room to cool and then to heat it up is less efficient than keeping constant temperature. Am I right or not?
Three radiators with thermostat valves are set to MAX, to allow radiators expose max heating to the room. Is this right?
I use gas heated boiler Viessman Vitopend W100, heating set to 5 (~60 C).

Is there something i could change to achieve more efficient heating?

Gaby-Netatmo
Posts: 309
Joined: 07 Jan 2014, 11:47

Re: PID algorithm

Post by Gaby-Netatmo » 06 Jan 2015, 18:06

Hi,
dicdastardli: It takes around 2 weeks in general to propose the advanced algorithm (PID).

Algirdas: If you are not at home during the day, it is generally adviced that you reduce the set temperature so as to reduce your consumption. Ususally is is adviced to put 16°C for the eco mode and 17°C for the night temperature.
Concerning your radiators, you can keep the valves to the MAX.

Thank you
Gaby-Netatmo

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