https://communities.bentley.com/products/building/performance/f/hevacomp-forum/131462/variable-flow-systems-in-netsysIt&#39;s been some years since I used Hevacomp and am now considering purchasing for my mechanical team. Can someone explain to me if it is now possible to consider diversity and variable flow in the piped and ducted systems? If for example, we consideren-USTelligent Community 12https://communities.bentley.com/thread/401167?ContentTypeID=1Tue, 07 Feb 2017 13:55:39 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:8ca3f175-f204-46de-a8f7-79a89ebd7e27Shane ReganFor clarification; the above regulations apply to Cold and Hot Water Systems only. It is not possible to model diversity in Chilled Water or Heating systems.<div style="clear:both;"></div>https://communities.bentley.com/thread/401154?ContentTypeID=1Tue, 07 Feb 2017 13:03:34 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:937d3f1c-7b18-42d1-839c-e80f18066406Shane Regan<p>Hi Nicholas,</p> <p>It is not possible to directly specify variable flow at outlets, however diversity&nbsp;of&nbsp;pipework systems is now&nbsp;taken into account in accordance with BS EN 806-3. Please find further details about the&nbsp;calculation method&nbsp;<a href="/products/building/performance/w/building_performance__wiki/15526.netsys-pipe-sizing-standards">here.</a></p><div style="clear:both;"></div>