Revision history [back]

"Maximum Hot Water or Steam Flow Rate {m3/s}" input field in unit heater object should have "Autosize" instead of blank. That successfully completes the simulation.

ZoneHVAC:UnitHeater,
  1-Stair-A Zn Unit Heater,               !- Name
  Always On Discrete,                     !- Availability Schedule Name
  Node 1235,                              !- Air Inlet Node Name
  Node 1236,                              !- Air Outlet Node Name
  Fan:ConstantVolume,                     !- Supply Air Fan Object Type
  1-Stair-A Zn Unit Heater Fan,           !- Supply Air Fan Name
  Autosize,                               !- Maximum Supply Air Flow Rate {m3/s}
  Coil:Heating:Water,                     !- Heating Coil Object Type
  1-Stair-A Zn Unit Heater Heating Coil,  !- Heating Coil Name
  ,                                       !- Supply Air Fan Operating Mode Schedule Name
  No,                                     !- Supply Air Fan Operation During No Heating
  autosize,                               !- Maximum Hot Water or Steam Flow Rate {m3/s}
  0,                                      !- Minimum Hot Water or Steam Flow Rate {m3/s}
  0.001;                                  !- Heating Convergence Tolerance