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 |
