R290, and therefore flow temperatures a radiator understands
We install the Vaillant aroTHERM plus, an air-to-water monoblock running on R290, which is propane. R290 has a very low global warming potential and, more usefully in an existing building, it reaches a flow temperature of up to 75 degrees. That is the difference between replacing a boiler and replacing a heating system.
aroTHERM plus
Five models, VWL 35, 55, 75, 105 and 125.
Performance
Installation and warranty
Four steps, all of them ours
Planning, electrical design, grid registration and installation are separate departments in the same building. Nothing in this list is subcontracted per project.
Site survey first
We do not put a figure on paper before someone has seen the building. Roof structure, electrical situation and actual consumption decide what is sensible, and sometimes the answer is that nothing is.
Design in house
DC layout and AC layout are done by two separate departments of our own. Every system is calculated individually, module by module and string by string.
Grid registration
Registration and the commissioning notification are two separate filings, and every distribution grid operator in Germany runs its own procedure. Five people here work on nothing else. We issue the installer's declaration ourselves.
Installation and commissioning
Our own crews, split into DC, AC and heat pump teams, with our own warehouse and fleet behind them. After commissioning the system stays under remote monitoring.
Questions about this equipment?
Call 05371 589 8857 or write to info@iee-solar.de. We answer in English.