Santeri, As far as Trnsys3D and TRNBuild are concerned, zone 1 actually has 5 walls: one facing west, one facing north, one facing east, one adjacent to zone 2 and one adjacent to zone 3. In Trnsys3D you have to draw a vertical line in zone 1 to break the one adjacent long wall into two adjacent long walls. best, David On 2/28/2012 08:21, Santeri Siren wrote: I think my picture did not show in the last message so here it is as an attachment. -- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |