natural gas heating through radiators for domestic building

edit

Hi I am new to open studio and was wondering if someone could help. I am trying to simulate a domestic building that uses standard radiators for space heating (UK home). I understand I need to use a hot water baseboard but am having trouble setting up the plant loop to supply these. In particular I am unsure what set point manager to use. Any help would be appreciated. Once again I am unexperienced in creating HVAC loops.