The Thermia Atria Duo Optimum is a variant of the Thermia Atria Optimum.
What separate them is that the Duo variant does not have an integrated hot water tank.
The Thermia Atria Duo Optimum is a good choice if you have
a low ceiling height or require very large amounts of hot water.
*) Tested according to EN14511 at A7/W35 (including fan and circulation pumps)
|Atria Duo Optimum||6||8||10||12|
|Main supply||400V 3-N||400V 3-N||400V 3-N||400V 3-N|
|Auxillary heater||3/6/9/12/15 kW||3/6/9/12/15 kW||3/6/9/12/15 kW||3/6/9/12/15 kW|
|Output capacity||6,18 kW||7,81 kW||9.39 kW||10,97 kW|
|Heat factor (COP)||3.61||3.72||3.59||3.48|
|Fuse||10/16/20/20/25/25/30 A||16/16/20/20/25/25/30 A||16/16/20/20/25/30/35 A||16/20/25/25/25/30/35 A|
|Weight||154 kg||154 kg||154 kg||162 kg|