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Författare Ämne: 5 year old pump Nibe F1145 8kW  (läst 1525 gånger)

0 medlemmar och 1 gäst tittar på detta ämne.

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5 year old pump Nibe F1145 8kW
« skrivet: 05 januari 2015, 09:34:09 »
(Fråga från e-post-kontakt /Admin)

Since I do not know Swedish it is difficult for me to navigate through the website and find answers on my questions.

One month ago I moved to a house (160 m2 plus a seperate annex - garage, heating room and storage - 90m2) in Älmhult (Kronoberg) with the 5 year old pump Nibe F1145 8kW. I do not have any experience with that kind of heating however i understand principles and my main issue is that;
1. I experienced heat comfort issues in my house (17 degrees on some days)
2. I have a feeling that electricity consumptiion is too much - i used 1900kwh in December, but i am not able to seperate only consumption of the pump

Do you think it could be OK to ask you some questions to get a direction what I should do/change/check with the operation of that pump?
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Konverterat från direktverkande elradiatorer till vattenburet och värmepump 2003. Hus: Älvsbyhus -75, Ort PITEÅ, uppvärmd yta ca 170 m2. Värmepump Nibe 1210.7 kW, 500 meter ytjord-kollektor i en slinga, 14 st Korado radiatorer,2-rörs vattenburet system. Utomhuspool 4 X 8 meter som värms med värmepump till ca 30 grader under maj-sept.
Yrke: Egen företagare, bakgrund: Systemtekniker med inriktning mot styr/regler. 3 års yrkesutbildning + diverse internutbildningar, 20 års yrkeserfarenhet.
Allt om mig: http://www.varmepumpsforum.com/vpforum/index.php?topic=5196.msg48236#msg48236

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SV: 5 year old pump Nibe F1145 8kW
« Svar #1 skrivet: 05 januari 2015, 10:29:32 »
First of all you need manuals in english:

Intaller manual
http://www.nibe.eu/nibedocuments/8672/031335-2.pdf

User manual
http://www.nibe.eu/nibedocuments/7949/031334-1.pdf

Then please write some values as flow and return temp on the system when the heat pump is working and heating the house. Also add setpoint value and outside temperature.
NIBE 1215-5, 120 m aktivt borrdjup, 127 m2 boyta 53 m2 biyta, suterräng byggt 1970. Tidigare 2,5 kbm olja/år, huset tilläggsisolerat i samband med VP-installationen. FST34+1 som frikyla.
---------------------------------------------------------------------
Ca 5500 kWh i drivenergi för VP-drift, ca 5500 kWh HH-el + komfortgolvvärme i snitt/år.

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SV: 5 year old pump Nibe F1145 8kW
« Svar #2 skrivet: 05 januari 2015, 12:08:47 »

2. I have a feeling that electricity consumptiion is too much - i used 1900kwh in December, but i am not able to seperate only consumption of the pump



We had 1.722 kWh in december in southern Skåne.
So 1.900 in Älmhult seems to be OK.

sw
Villa i Skåne, 1964, ca 225 m² i 1,5 plan + garage (frostfritt).
Tidigare olja, motsv ca 38.000 KWh totalt.
1986 - 1994 Luft - Vatten VP, CTC Rebell 306, ca 27.000 kWh. Usel installation. Radiatorsystemet kopplades baklänges.
1994 - 2010,  QVANTUM Q12, grundvatten. 18.000 KWh / år.
2010 - 2013,  TERRAWATT 3 3/4 hk, GRUNDVATTEN. Ny borra 60 m. Vattnet visar sig dock vara för salt- och järnhaltigt för GrundvattenVP. Styrning JEFF RD 23
2013 - Vi konverterar till bergvärme och fördjupar den befintliga borran till 210 meter.
Total ElFörbrukning
2011  13.400 kWh                            
2012  13.500 kWh
2013  14.450 kWh
2014  12.752 kWh
2015  13.835 kWh

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SV: 5 year old pump Nibe F1145 8kW
« Svar #3 skrivet: 06 januari 2015, 22:15:14 »
Thank you for manuals.
OK, it is my very first electricity consumption reading in that house, so it was a little shocking... :) Lets see next months.

A few more information about the system:

- there is a combination of floor heating (6 circuits) and 4 wall radiators in the places where there is no floor heating. Floor heating is connected via Virsbo wireless system but all circuits are fully opened at all times apart from sleeping room which is set to be closed above 18 degrees
- there is a water tank VBA300/200 - it writes 300 L outer tank and 186 L inner tank. Does it mean it has got accumlated capacity of 486 L of water?
- there is a small electric water heater from Nibe in the bathroom to secure immediate inflow of how water. It is constantly on.
- there is no inhouse temperature sensor installed so the pump only works according to the temperature from outside

Current parameters read from the pump:

Current temperature - 0.6 degrees
Average temperature - minus 0.6 degrees
Calculated temperature - 43 degrees
Inflow temperature - 44 degrees
Return temperature - 38 degrees
Heating curve 8
point offset +3 degrees
Temperature adjustment (menu 1.1) - plus 1
Temperature at home in the living room - 20.8 degrees (so no problem now)

Since we have very small usage of hot water i schedulded hot water on NORMAL between 3.00am-6.00am and the rest of the day it is OFF. I did that 3 days ago. No problem with the hot water amount. Is that a good solution for lowering electricity consumption?

Tha main issue with the pump was during Christams days where temperature was around -9 degrees during the day and up to -13 degrees during the night. Temperature at home dropped to 17 degrees and that is definitely too low. I called for a mechanic from the company which installed the pump. He changed the operational mode to AUTO where immiedietally the additional heating switched on and temperature started going up. But then my electricity consumption peaked to 100kwh during one day in comparison to daily average of 60 kwh. I understood that additional heating is needed when outside temperature drops below -20 degrees approx. What is a common advice about additional heating, when should it be used?

Now I blocked additional heating and it is on only between 6.00-9.30am.

Questions:
1. When I spoke to Nibe helpline they said the heating curve for floor heating should be 5-6. I have got 8 now and it is OK temperature now. Whats the common practise here?
2. Does it make sense to have inhouse temperature sensor which would feed that info back to the pump and adjust accordingly? I understood it could be quite confusing with Wirsbo wireless system.
3. Is there anyway to upload all logged parameters and pump performance from the system into a computer so that I could see how it behaves. I think it could help me to adjust the pump in a good way in a long run.
4. Is there anyway to see electricity consumption only of the pump? In the system of the pump? Or would I have to install a seperate electric meter?
5. Main question - how to avoid 17 degrees at home next time?!

Thanks for all support and answers! :)






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SV: 5 year old pump Nibe F1145 8kW
« Svar #4 skrivet: 07 januari 2015, 06:00:55 »
You should have all wirsbo thermostats set on maximum temp, and let the heat pump manage the temperature.
A indoor temp sensor is good to use when you do so, but not necessary.

This software lets you see what is happenging: http://www.energibutiken.se/en/12-logaide

Min loggade anläggning: http://e-logger.se/pub?rmarklund
Gratis Offerttjänst vid värmepumpsköp? http://www.energioffert.se
Vill du logga din anläggning?: http://www.energibutiken.se/sv/2-datalogger
Mina andra forum: www.poolforum.se och: www.atvforum.se
Konverterat från direktverkande elradiatorer till vattenburet och värmepump 2003. Hus: Älvsbyhus -75, Ort PITEÅ, uppvärmd yta ca 170 m2. Värmepump Nibe 1210.7 kW, 500 meter ytjord-kollektor i en slinga, 14 st Korado radiatorer,2-rörs vattenburet system. Utomhuspool 4 X 8 meter som värms med värmepump till ca 30 grader under maj-sept.
Yrke: Egen företagare, bakgrund: Systemtekniker med inriktning mot styr/regler. 3 års yrkesutbildning + diverse internutbildningar, 20 års yrkeserfarenhet.
Allt om mig: http://www.varmepumpsforum.com/vpforum/index.php?topic=5196.msg48236#msg48236

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SV: 5 year old pump Nibe F1145 8kW
« Svar #5 skrivet: 13 februari 2015, 10:58:00 »
You can most likely view the historical electric consumption for your total system on EON´s webiste, ww.eon.se ,that is the net operator in Älmhult.

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