Ämne: Which brand of Bergvärmepump and what is the usual cost?

[Roland]

3000 L oil corresponds to about 23 000 kWh assuming 75% efficiency. That is the same figure as for my house. I have a pump which today would be called a 6 kW pump. If you do not intend to extend the house I would say that the 8 kW model is sufficient.

Note that pumps 1 and 2 are inverter pumps, that is the reason why the prices are higher. Both pumps works in the range 3-12 kW. Below 3 kW they are on/off pumps.

Where is the house located?

[S_M]

Hi Roland,

The house is located in Ekerö- Stockholm.

And I think the Geo 508 is as well an inverter pump from 2-8kw.

Thanks!

[Carl N]

Hi!
I think that you should go for number 1 or 2.
8 KW model can be OK if it is an on/off but as you notice it is an inverter.
#4 could be OK if there is enough water in the system, to this one i should recommend a volume water tank in series with the flow to the heat system.
For an on/off machine the recommendation is to have at least 20-25 liters water per kW output effect, so a 200 liters tank would be OK.

[Roland]

And I think the Geo 508 is as well an inverter pump from 2-8kw.

Correct, when I read 8 kW I assumed it was an on/off and did not check.
 
Some have had problems to understand and set the parameters in the regulating system in Nibe inverter pumps. They tend to work as on/off pumps even when the heat demand is higher than the minimum power.   

 

[Daniel Sjöblom]

Regarding setting the right parameters, no matter who makes the product this is 2019 and neither the installer or the customer should be responsible for setting the perfect settings.

This is not a jab at Nibe or any one perticular, but today with first start guides etc asking for the current system setup and setting the best defaults is a no brainer really, unless the best defaults are something you use your customer base as a test bed to work them out on.