I using Mc4 Suite for colculation and drawing flor heating system. And stop work because i not understand a few term.
1. In calculation results mc4 have Total heat rate = Heat rate TOP + Heat rate Down. What the meaning of TOP and DOWN. I think what rate top - to room and Down to ground. But when i add warmth-keeping rate Down always bigger.
2. What the meaning of term Oqqupied and perimetr zone