Facts about the project
- PV system
- Hot water backup
- Hot water demand
Since 2014, the ELWA has been in operation, paired with a 2.25 kWp PV system. The installation took place in a 1,000-litre buffer storage with a fresh water station. While we usually do not utilize the optional hot water backup with mains power, this feature proved to be useful during a renovation phase in unfavourable weather conditions.
What initially appealed to me about the ELWA was the simple installation. Now, I appreciate that this solution is not only easy to install but also entirely maintenance-free. I have also acquired the USB interface from my-PV, allowing me to retrieve data and monitor both the PV thermal yield as well as the temperature profile.
On days with fluctuating weather conditions, when I inquire about my neighbour’s thermal solar system and whether it has delivered any results, he often denies it. In the meantime, my ELWA consistently generates 4 kWh of heat, even on overcast weather. It's truly a brilliant solution!
Product details ELWA:
0 – 2,000 W infinitely adjustable
Target temperature adjustable with rotary knob
Works even during power outages
For hot water storage tanks ranging from 100 – 1,000 liters
Self-consumption: 2 W
Efficiency: >99% at rated power
Optional hot water provision: 750 W
With the data interface "USB Interface" and the free ELWA software, the yield data can be easily monitored.
An integrated data logger allows, among other things, the visualization of the achieved solar yields and the temperature profile.
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