All Danfoss and Thermia heatpumps manufactured since 2012  can use ThermIQ and ThermIQ-Link as an alternative logger. At least the following models can use ThermIQ and ThermIQ-Link:

• Danfoss DHP series
• Thermia G3 series
• Thermia Diplomat Optimum G2
• Thermia Diplomat Duo Optimum G2
• Thermia Diplomat Duo Optimum
• Thermia Diplomat Optimum
• Thermia Diplomat Duo
• Thermia Diplomat
• Thermia Atria Duo Optimum
• Thermia Atria Optimum
• Thermia Atria Duo
• Thermia Atria

The ThermIQ/ThermIQ-Link interface must be connected as the first interface to the expansion port (EXT-port) of the heatpump, any other expansion board must be connected via the ThermIQ interface. If you have either of  Thermia Online or Thermia Link you must use Thermia-Link.