ᐅ Heat Pump Design Software for BLW NEO by Brötje

Hello everyone,

I am considering installing a BLW NEO from Brötje.

Does anyone here perhaps have access to the BLW NEO sizing software from Brötje?

Required house demand excluding domestic hot water (heated separately):

-7°C (19°F) outdoor temperature = 12.5 kW
-10°C (14°F) outdoor temperature = 14 kW

Maybe someone can use the software to calculate the recommended heat pump size for me. Whether a BLW12 would be sufficient or if a BLW18 would be better.

Thanks

Martin_H schrieb:

Required house demand excluding domestic hot water (heated separately):

-7°C outside temperature = 12.5 kW
-10°C outside temperature = 14 kW

How was this calculated?
Underfloor heating or radiators, and what dimensions?
What are the planned supply and return temperatures, and the desired indoor temperatures?

Martin_H schrieb:

Maybe someone can calculate the recommended heat pump size with software.

Well, if you have an accurate heating load calculation, there aren’t many options left ==> 12 kW. No big calculation is needed anymore.

Most of the heating is underfloor heating. Only in the basement are there still 2 radiators.

The flow temperature is around 40°C (104°F) at an outdoor temperature of -10°C (14°F).

I determined the heating load using a heat meter last winter. The outdoor temperature was averaged daily.

I would just like to have an excerpt from the software "in black and white." Otherwise, everyone tells me something different again.

Martin_H schrieb:

Most of the heating is underfloor heating. Only in the basement are there 2 radiators.

The supply temperature is around 40°C (104°F) at an outdoor temperature of -10°C (14°F).

I determined the heating load last winter using a heat meter. The outdoor temperature was averaged daily.

You should consult a specialist to have this properly calculated (e.g., Heckmann). Then you will also have the correct sizing for the heat pump.

To be honest, in my entire professional career, I have never seen a heat pump manufacturer provide a calculation for their heat pump; instead, the heat pump was always selected based on an external heating load calculation and heating system planning. I also don’t see what else would need to be calculated there. If the house has a heating load of 10kW, you select a heat pump that is slightly below 10kW. That’s all there is to it.

Brötje did not create a sizing tool for the BLW NEO without reason.

Maybe someone here in the forum has access to Brötje’s PartnerLogin and can quickly enter the heating load and send me the result.

Martin_H schrieb:

Brötje didn’t develop a sizing tool for the BLW NEO without reason.

No, but it’s mostly useful for marketing purposes.

First, do your homework on heating system design.