Good afternoon everyone,
we have been offered the TERRA SWM 6-17 HGL from IDM. So far, I haven’t been able to find much information about the company IDM. Does anyone have experience with the heat pumps from IDM? From what I have heard and read, the Austrian company IDM has a pretty solid reputation.
Best regards
we have been offered the TERRA SWM 6-17 HGL from IDM. So far, I haven’t been able to find much information about the company IDM. Does anyone have experience with the heat pumps from IDM? From what I have heard and read, the Austrian company IDM has a pretty solid reputation.
Best regards
Seriously now??? It only modulates down to 6 kW... and why do you need 17 kW? Are you trying to tell me that with your 1300 m³ (I assume you mean cubic meters 😉 ) you end up with a heating load of 17 kW?
What heating load did your building physicist calculate?
The "smaller" model of the Terra already covers 3–13 kW. And that wouldn’t be enough??
What heating load did your building physicist calculate?
The "smaller" model of the Terra already covers 3–13 kW. And that wouldn’t be enough??
Ah, okay. Still, an 11 kW heating load would be extremely high. Have you roughly calculated it with the CrinkTool? You can try searching online. You only need a few data points for it.
Are you currently building according to the Energy Saving Ordinance / building regulations? Without ventilation?
By the way, nominal power means at about half speed. Designing it this way doesn’t make sense.
I would strongly recommend reading up on the topic a bit more before your appointment...
Are you currently building according to the Energy Saving Ordinance / building regulations? Without ventilation?
By the way, nominal power means at about half speed. Designing it this way doesn’t make sense.
I would strongly recommend reading up on the topic a bit more before your appointment...
T
T_im_Norden15 Feb 2021 16:19Was a room-by-room heat load calculation according to DIN performed?
11 kW for a modern new build is unusually high.
11 kW for a modern new build is unusually high.
Thanks for the hint. We had just quickly updated the heating load calculation right before Christmas because we needed it for the drilling quote. Maybe there was an error there as well. I have all the exact data that the Crinktool requests. My result is 7,844 W including ventilation, domestic hot water, and heating. We are building to KfW 55 standard with ventilation including heat recovery.
That sounds better now. You really need to be careful because some people build in quite a large safety margin. Additionally, don’t forget that this is all without solar gains and based only on the heating demand for the coldest days of the year. You can check out some related discussions in the neighboring threads. We have/had a real stress test recently.
Regarding IDM, you should know that the nominal capacity is at about half the rotational speed or something similar. The smaller model would probably be more than sufficient for you.
If you were to take the suggested 6–13 kW (6.4–13.8 kW) unit, just imagine what would happen around 0°C (32°F) if your house only has about a 3 kW (3.2 kW) heating load (random example). It would short-cycle. In that case, you wouldn’t even need a modulating unit.
Regarding IDM, you should know that the nominal capacity is at about half the rotational speed or something similar. The smaller model would probably be more than sufficient for you.
If you were to take the suggested 6–13 kW (6.4–13.8 kW) unit, just imagine what would happen around 0°C (32°F) if your house only has about a 3 kW (3.2 kW) heating load (random example). It would short-cycle. In that case, you wouldn’t even need a modulating unit.
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