BananaJoe
2021-10-25 17:10:28
- #1
Hello everyone,
I have a problem:
For our new building (2 full floors, no basement, approx. 175 sqm heated area), the following was originally supposed to be installed:
- Heat pump Stiebel Eltron WPL 13 ACS
- Hydraulic module HM Trend
- Hot water storage tank Stiebel Eltron SBBE 301 heat pump (300 liters, ONLY hot water, no buffer storage)
On this basis, the underfloor heating was planned and installed. The heat pump outdoor unit and the hydraulic module have now also been delivered, installed, and connected to the underfloor heating.
Now the general contractor informs me that Stiebel Eltron has apparently discontinued the hot water storage tank and also has no devices in stock – a look at SE’s homepage confirms this, as the device can no longer be found there.
As an alternative, the Stiebel Eltron integral storage tank HSBC 300 L cool is now being proposed. The main differences of the two from my perspective (first value = SBBE 301, second value = HSBC 300):
Nominal capacity drinking hot water storage: 319 liters vs. 291 liters
Nominal capacity buffer storage: none vs. 100 liters
Standby energy consumption (24h at 65 degrees): 1.2 kWh (efficiency class A) vs. 1.5 kWh (efficiency class B)
Since I read extensively on the topic of underfloor heating design before building the house, I paid great attention to the fact that no buffer storage was planned in the system when selecting the components. On this assumption, as mentioned, the underfloor heating was also planned (by an engineering firm that I believe was also recommended here in the forum). Now I am wondering:
1. Can the Stiebel Eltron components (heat pump, hydraulic module) also be combined with a drinking hot water storage tank from another manufacturer? If yes, how can I tell whether a device from another provider is compatible?
2. Could the “previous version” of the SBBE 301, the SBB 300-1, be an alternative without a buffer? Judging by its appearance, it seems quite outdated (technically) and also has a worse standby energy consumption of 1.7 kWh than the HSBC 300 proposed by the general contractor.
3. How bad is the buffer storage in practice, i.e., what approximate additional annual costs should one expect (if this can even be roughly estimated)?
Thank you in advance for all answers!
I have a problem:
For our new building (2 full floors, no basement, approx. 175 sqm heated area), the following was originally supposed to be installed:
- Heat pump Stiebel Eltron WPL 13 ACS
- Hydraulic module HM Trend
- Hot water storage tank Stiebel Eltron SBBE 301 heat pump (300 liters, ONLY hot water, no buffer storage)
On this basis, the underfloor heating was planned and installed. The heat pump outdoor unit and the hydraulic module have now also been delivered, installed, and connected to the underfloor heating.
Now the general contractor informs me that Stiebel Eltron has apparently discontinued the hot water storage tank and also has no devices in stock – a look at SE’s homepage confirms this, as the device can no longer be found there.
As an alternative, the Stiebel Eltron integral storage tank HSBC 300 L cool is now being proposed. The main differences of the two from my perspective (first value = SBBE 301, second value = HSBC 300):
Nominal capacity drinking hot water storage: 319 liters vs. 291 liters
Nominal capacity buffer storage: none vs. 100 liters
Standby energy consumption (24h at 65 degrees): 1.2 kWh (efficiency class A) vs. 1.5 kWh (efficiency class B)
Since I read extensively on the topic of underfloor heating design before building the house, I paid great attention to the fact that no buffer storage was planned in the system when selecting the components. On this assumption, as mentioned, the underfloor heating was also planned (by an engineering firm that I believe was also recommended here in the forum). Now I am wondering:
1. Can the Stiebel Eltron components (heat pump, hydraulic module) also be combined with a drinking hot water storage tank from another manufacturer? If yes, how can I tell whether a device from another provider is compatible?
2. Could the “previous version” of the SBBE 301, the SBB 300-1, be an alternative without a buffer? Judging by its appearance, it seems quite outdated (technically) and also has a worse standby energy consumption of 1.7 kWh than the HSBC 300 proposed by the general contractor.
3. How bad is the buffer storage in practice, i.e., what approximate additional annual costs should one expect (if this can even be roughly estimated)?
Thank you in advance for all answers!