Making some progress but need some help, please.
i excluded and re-included the device a couple of times and eventually the "child" devices appeared.
Now, the only way i can control the two relays it to use the driver "Jasco Z-Wave Dual Outlet"
This allows control of the two independent relays using "switch-1" or "switch-2" The Z-wave command is either "thermostat Off" or "thermostat Heat" (which is effectively off or on, respectively)
Had to create an "auto refresh" task with rule machine to ensure the actual state is true in HE environment.
Any way i can modify this to get it more like a dual-channel boiler controller?
