What is the difference between the Domestic and Radiant Coils in the Sedore 3000?
The Domestic coil is a smaller coil and it is placed in the back chamber where the temperature isn't as hot so it allows for a direct hookup to your domestic hot water heater.  The Hydronic or Radiant heat coil is larger and it is installed in the front chamber at the hottest place in the stove to pull as much heat out for transfer it to another place. Base board heat, Radiant floor heat, radiator, etc.  This heated water could also be used in the domestic supply but a mixing valve would need to be installed for safely lowering the temperature to a safe level to prevent scalding.