Turbonics heater in the attic

Chestersthing

I have a separate zone in my attic that was installed for future use on my hydronic system. Two 3/4" copper pipes, 1 send & 1 return connected together.
The future is now and I have opted for a Turbonics recessed heater (basically a toe kick in a cabinet). I have no intentions of adding an additional heater. Can I just reduce the 3/4" to 1/2" and put the feed side in and the return side out? I read about monoflow tees but I believe they are only required if I install the unit in series. In my case it will be the only unit on the zone. Is this the case? If it is should I have any other concerns?


Thanks