Reply To: installation diplomat optimum G2 Shop › Forums › ThermIQ in english › HW Installation › installation diplomat optimum G2 › Reply To: installation diplomat optimum G2 2025/03/23 at 14:04 #8608 Anders aKeymaster Hi Frank, You will have to disconnect the comms module as it will compete with ThermIQ. The ext-cable to it should then fit nicely into any of the two ext-connectors on Thermiq. Rgds /&&