This is the floor heating design drawing of a four storey villa in Beijing, which uses a wall mounted gas stove as the heat source. The drawings include: drawing catalogue, heating design description, water separator schematic diagram, installation schematic diagram, heat insulation method at pipe denseness, expansion joint method, side view of floor heating structure, heating system schematic diagram, floor heating layout from the first floor to the fourth floor, main pipe temperature control diagram, machine room layout, etc.