HVAC set

The HVAC set is assembled as a separate set (Drawings → Export → HVAC set) with its own mark and sheet numbering: GOST R 21.101-2026 does not allow combining HVAC with plumbing or electrics (cl. 4.2.4, 4.3.1). The title block reads project-HVAC. The set contains:

• a plan of the heating, ventilation and air conditioning systems for each floor, without water supply and sewerage;
• axonometric heating (T1, T2) and ventilation (P1, V1) diagrams, one per system with all floors (GOST 21.602, cl. 6.2): pipes with marks and diameters, risers Riser T1-1, radiators with the number of sections; ducts with the cross-section above the shelf and the flow rate L below it (Fig. 10), grilles, fans, air conditioner units; refrigerant pipes with the diameter (cl. 6.2.8). Scale 1:50, 1:100 or 1:200 (Table 3), the largest one at which the diagram fits, otherwise no scale;
• a table of heat losses and heating appliances;
• air exchange of the rooms;
• air conditioners;
• a heating and ventilation specification.