Is a buffer tank generally a worthwhile investment for a heat pump? Or is it highly recommended or even essential?
Is a buffer tank in my case a worthwhile investment? Or is it highly recommended or even essential?
My configuration is:
170 sqm (1829 sq ft) heated area
Energy standard: nearly KfW-55
Ground source heat pump, 3-12 kW modulating
Optimal heat pump size according to calculation: 8 kW
5 household members
Mainz
Is a buffer tank in my case a worthwhile investment? Or is it highly recommended or even essential?
My configuration is:
170 sqm (1829 sq ft) heated area
Energy standard: nearly KfW-55
Ground source heat pump, 3-12 kW modulating
Optimal heat pump size according to calculation: 8 kW
5 household members
Mainz
jx7 schrieb:
(1) After the appointment with Enrgi, the issue with the cycling has been resolved. In the last 4 hours, there have only been three cycles lasting 3:21 h, 2:07 h, and 0:27 h.
The following measures were taken:
- ERR all set to on (previously this was not sufficient to fix the problem)
- Inverter replaced
- Software update
- Power adjusted from 3–12 kW to 2.5–7.5 kW
(By the way, the bypass valve was completely closed.)
(2) After the software update, the options for scheduling have been greatly limited. I can now only activate/deactivate the entire heat pump, but not select specific operating modes (heating, cooling, domestic hot water, pool).
The only type of schedule possible in spring/autumn is based on the heating limit. Contrary to my assumption, this refers not to a 24-hour average but to the current temperature. This means that in spring/autumn heating only runs at night if the temperature is below 12°C (54°F). If the temperature is above 12°C (54°F) during the day, heating is off. I consider the limitation of heating times during transitional seasons beneficial, but during the day the heat pump could run on self-generated solar power, while at night I have to buy electricity.