lib/to_openstudio/hvac/template.rb in honeybee-openstudio-2.29.1 vs lib/to_openstudio/hvac/template.rb in honeybee-openstudio-2.29.2

@@ -83,10 +83,14 @@
       os_hvac = openstudio_model.add_cbecs_hvac_system(standard, equipment_type, zones)
       os_air_loop = nil
       air_loops = openstudio_model.getAirLoopHVACs
       unless air_loops.length == $air_loop_count  # check if any new loops were added
         $air_loop_count = air_loops.length
-        os_air_terminal = zones[0].airLoopHVACTerminal
+        os_air_terminal = []
+        zones.each do |zon|
+          os_air_terminal = zon.airLoopHVACTerminal
+          break if !os_air_terminal.empty?
+        end
         unless os_air_terminal.empty?
           os_air_terminal = os_air_terminal.get
           os_air_loop_opt = os_air_terminal.airLoopHVAC
           unless os_air_loop_opt.empty?
             os_air_loop = os_air_loop_opt.get