Feedback.
Test version of app and S735
Return line bt62 shows high value
The value if bt62 is what NIBE is reporting.
What is the real value?
Looked everywhere unable to find any named that. It have not been updated for 17 hours anyway
@Daniel_Lofgren - it seems to me that BT62 is probably a datapoint which is not used by your device. Therefore its value is empty.
As for power consumption - Indeed, I did not find any datapoint in your that seems to be measuring the power consumption. Do you have anything on the device itself or maybe on MyUplink app that is showing you the amount of power consumed by the device?
No I have not found any power meter in the device, bad of Nibe when the heatpump is expensive as a car . Might just need to get a external powermeter.
One of the users in our community said he will try looking for configuration items of the pump that will enable power metering.
I encourage everyone on this forum to try and assist.
If anyone has a good communication with NIBE support team, maybe its worth asking them if its somehow possible.
I got an S2125-12 with a VVM 320 and two zones. Is that something that would help you for testing?
Thank you for that offer, I already have another volunteer
I have asked Nibe to assist, at least confirm if its a technical limitation.
Excellent, let us know what they said.
Dead silence from Nibe. I guess they think it’s someone else problem.
Frustrating…
Hi,
Im completely new to this but got a login anyway. Just googled for “co2” and “fanspeed” (as i remember).
You speak about Homey, flows, API and I dont know what. I looked at some ot these flows - it reminds me of school and the possible way forward - ( and, or, osv).
I was just searshing for a way to control the fan against a value of co2. That is a fact that it states the amount of fresh air should be 0.35 l/min/m2. About 190 m3/h in my house. In short, the air should be exchanged every second hour. Good. Then we are far away from the maximum of 20000 ppm of co2 → when you feel headache and such. To be on safe side the limit is now 800 ppm (outside fresh air is something like 420+ ppm) - to follow the requirements of the air exchange. But when its cold outside, this type of heatpump (F730), will not work at its best performance. If keeping the COP value by not increasing the air exchange (even if it is -20 C outside), the system need a secondary heat source. In US /UK they already defined that as a “gas, or oil source” - something extra to get away with the cold days. To me it does not make sense. Who are not freely freezing a few days per/year to stop this fossile war? Added the climate with a new air heat pump (working with the existing F730), will provide a much more comfortable inhouse climate, slowly adapting to changes.
Ok. enough of that. How do I get from here to actually using your tools and run some of your developed "API"s or what you call them.
Im more than willing to share any kind of data you may still miss. Not sure though reading through this lengthy discussion.
I did not think it was possible to control any output settings - like the fan speed. I know of early firmware versions (F750) that could - so I was hoping to find something.
Today I can read history and make changes - just since i bought some upgrades in MyUplink. I would prefer to be able to change the few that make sense as I wish. Else its esy to program the way with a reasonable good estimate.
An examle: I saw this “flow” about heating the tap water. In some other words I would say: let your teenagers know how to take a shower - wet, soap, flush. Max 4 min. Since I changed the tap water heating to once a day (02:00 - 04:00) this is not a problem anymore, they changed their behaviour. But the main thing right now wold be to connect the readback value of the humidity and co2 value - and let this effect the fan speed (190 m/h) - reduce it until you feel something - and then increase a bit. Its a fact that these “exhaust air heat pumps” dont work on their best COP when running fast. If cold outside you need some extra heating (air to air heat pump - or a fire) to manage. The queston is where the optima is. And therefor a tool away from NIBE - with the fetures mentioned here - would be great to have. A toshiba air heat pump (Daiseikai 10) would give about COP 3.5 at minus 15 degrees C. If then the inhouse F730 run at 20-30 RPM (COP 4.5) - it would still get most of heat away from the old air, produce tap water, get the air circulation inhouse - but not much more. Instead the other air heat pump (external part outsice) would produce heat until -30 degrees C. A better solutin working as a backup device also - and being able to produce some cooling the few days in Sweden you need it.
Long story, happy to googled this site, please let me know if I could participate some how. About energy I took the measurements from 27-28 Feb. (Amps on 3 phases BE1 BE2 BE3) and multiplied with our line AC voltage. And got the total power in column K (about 40 kWh - same as my provider). For sure there are 3 current sensors thats included in the purchase. I just noticed there are some installers who does not care to install these… Might be a reason for some not having the results. Most probably later system do have them installed. (S-735). And if installed you still need to measure the voltage to get the power used. In most cases this is a plain multiplication since there are not much of reactive current (not in phase). Notice here also the compressor use BE2. If istalling anothe heat pump you should probably use another phase.
I put in the last past calc sheet reading the power 27-28 Feb. Hope I can learn whatever you do with this Homey and all the other things!
Im not sure you got the image from my calc sheet. Say hello if you want it.
Regarding powerconsumption. My F730 state at least how many kW the imersion heater is currently using, unfortunattly the myuplink only show heater on or off. I complained to the myuplink team about this and they putted it on a future feature list. Beside this the F730 has no power meassure capability’s, except the BE1,2 & 3 as I understand. There is things missing after the merge to myuplink. By the way, I figured out that fan speed is actually working in the homey app but not in an easy way. It show if 0,1,2,3 & 4 fan mode is selected but in % NIBE uplink showed this in the %. My case 63,0,40,80 & 100 % fan speed.
FAN speed in F-Series is going to be supported MUCH better in the next version. Stay tuned….
Sorry to hear about the power consumption. Its frustrating.
Hej, thats great news !
So the fan speed could be controlled on the F-series? There is defined % steps setup - so they can easily be set to 63,0,40,80,100 - or whatever… The kW used when extra heat is needed is a variable and hence not so easy to get from the system. It use from 0 to max set kW until the heat demand is met. It is possible to extract total kW though as I showed before. Else the conversion was time*max set kW (to much calc then). Looking in the responce log I see total numbers of compressor time hrs - out of which is used for tap water. And total extra electricity - but just hrs. not the power each second. I try add some screens, just tell me if this is not giving anything. This Myuplink sw miss some things present on the Uplink version. It can be better.
So - If there is a way to calculate energy by multiplying a few datapoints, would it be reasonable to allow the suer to configure the datapoints to multiply, and the app will the calculate the energy?
I can add that configuration to the device configuration page, the user will choose a few datapoints, and the energy would be calculated.
Is this reasonable, or is the whole system configuration is becoming too complicated? What do you all think?
Hi,
This summer we get a Nibe heatpump type F2120. The plan I have is to let it not only heat my floor heating (vessel of 150 liter) but for bath water as well (500 liter). I like to heat both vessels up on the most economic period in time. With a 2/3 valve the Nibe (or Homey?) will choose which of them is heated up. From May I have a dynamic energy contract. So Iike to use Power by the Hour app to use my Nibe the most economic way. Also I have 35 solar panels (Enphase system). I will use them as well the most economic way. So… this might be an interesting project for my Homey Pro 2023. I’m a newbie user, but used to work in technical situations. So I think I can be a test user for you if you like.
Best regards, Marco
Hi all, as for the discussion on (lack of) energy measurement on NIBE : on my installation (SHK200S) the current measurement coils BE1, 2, 3 are installed on the grid total inputlines. So the NIBE can perform dynamic load balancing: reduce power consumption when total grid usage exceed the max grid parameter. Also in use to control the number (1-2-3) of additional electrical heating elements when GM is too low (full electric).
Thus unfortunate BE1-3 cannot be used for calculation actual power consumption in my installation.
I understood from my heattransformers engineer a PULSE output of an external energy meter (put in just for the heatpump only) can be connected to a spare NIBE aux input and configured for power measurement. Have not verified this yet.
However the different data points found in the uplink menu “3.1 service info warmtemeter” produces the total kWh used up to now (for Heatpump, hot water with and without electrical addition). So day-to-day delta differences divided by 24 gives kW usage per hour that day.
Hey @Gal_Carmeli , and thanks again for your efforts
Since a while back I no longer get history in insights on my S-1155 device. I readded the device a few days back but still no change.
I do see all the values in the live view so it is getting them properly though. Any thoughts?