boost::optional<IdfObject> ForwardTranslator::translateCoilCoolingDXSingleSpeed( CoilCoolingDXSingleSpeed& modelObject )
{
  IdfObject coilSystemCoolingDXIdf(IddObjectType::CoilSystem_Cooling_DX);
    
  m_idfObjects.push_back(coilSystemCoolingDXIdf);

  boost::optional<IdfObject> oIdfObject = translateCoilCoolingDXSingleSpeedWithoutUnitary(modelObject);

  if( ! oIdfObject ) { return boost::none; }

  IdfObject idfObject = oIdfObject.get();

  OptionalString s;

  s = modelObject.name();
  if( s )
  {
    coilSystemCoolingDXIdf.setString(CoilSystem_Cooling_DXFields::CoolingCoilObjectType,idfObject.iddObject().name());

    coilSystemCoolingDXIdf.setString(CoilSystem_Cooling_DXFields::CoolingCoilName,*s);

    coilSystemCoolingDXIdf.setName(*s + " CoilSystem");
  }

  Schedule sched = modelObject.getAvailabilitySchedule();
  translateAndMapModelObject(sched);

  coilSystemCoolingDXIdf.setString(CoilSystem_Cooling_DXFields::AvailabilityScheduleName,sched.name().get());

  OptionalModelObject omo = modelObject.inletModelObject();
  if( omo )
  {
    translateAndMapModelObject(*omo);
    s = omo->name();
    if(s)
    {
      coilSystemCoolingDXIdf.setString(CoilSystem_Cooling_DXFields::DXCoolingCoilSystemInletNodeName,*s);
    }
  }

  omo= modelObject.outletModelObject();
  if( omo )
  {
    translateAndMapModelObject(*omo);
    s = omo->name();
    if(s)
    {
      coilSystemCoolingDXIdf.setString(CoilSystem_Cooling_DXFields::DXCoolingCoilSystemOutletNodeName,*s);

      coilSystemCoolingDXIdf.setString(CoilSystem_Cooling_DXFields::DXCoolingCoilSystemSensorNodeName,*s);
    }
  }

  return coilSystemCoolingDXIdf;
}
boost::optional<IdfObject> ForwardTranslator::translateZoneHVACPackagedTerminalAirConditioner( 
    ZoneHVACPackagedTerminalAirConditioner & modelObject )
{
  boost::optional<std::string> s;
  boost::optional<double> value;

  IdfObject idfObject(IddObjectType::ZoneHVAC_PackagedTerminalAirConditioner);

  m_idfObjects.push_back(idfObject);

  // Name

  std::string baseName = modelObject.name().get();

  idfObject.setName(baseName);

  std::string mixedAirNodeName = baseName + " Mixed Air Node";

  std::string coolingCoilOutletNodeName = baseName + " Cooling Coil Outlet Node";

  std::string heatingCoilOutletNodeName = baseName + " Heating Coil Outlet Node";

  std::string reliefAirNodeName = baseName + " Relief Air Node";

  std::string oaNodeName = baseName + " OA Node";

  // AvailabilityScheduleName

  if( boost::optional<Schedule> schedule = modelObject.availabilitySchedule() )
  {
    if( boost::optional<IdfObject> _schedule = translateAndMapModelObject(schedule.get()) )
    {
      idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::AvailabilityScheduleName,_schedule->name().get());
    }
  }

  // AirInletNodeName

  boost::optional<std::string> airInletNodeName;

  if( boost::optional<Node> node = modelObject.inletNode() )
  {
    if( (s = node->name()) )
    {
      airInletNodeName = s;

      idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::AirInletNodeName,s.get());
    }
  }

  // AirOutletNodeName

  boost::optional<std::string> airOutletNodeName;

  if( boost::optional<Node> node = modelObject.outletNode() )
  {
    if( (s = node->name()) )
    {
      airOutletNodeName = s;

      idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::AirOutletNodeName,s.get());
    }
  }

  // OutdoorAirMixerObjectType
  idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirMixerObjectType,
                      modelObject.outdoorAirMixerObjectType());

  // OutdoorAirMixerName
  
  std::string oaMixerName = modelObject.name().get() + " OA Mixer";  

  idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirMixerName,oaMixerName);

  IdfObject _outdoorAirMixer(IddObjectType::OutdoorAir_Mixer);
  _outdoorAirMixer.setName(oaMixerName);
  m_idfObjects.push_back(_outdoorAirMixer);

  _outdoorAirMixer.setString(OutdoorAir_MixerFields::MixedAirNodeName,mixedAirNodeName);

  _outdoorAirMixer.setString(OutdoorAir_MixerFields::OutdoorAirStreamNodeName,oaNodeName);

  IdfObject _oaNodeList(openstudio::IddObjectType::OutdoorAir_NodeList);
  _oaNodeList.setString(0,oaNodeName);
  m_idfObjects.push_back(_oaNodeList);

  _outdoorAirMixer.setString(OutdoorAir_MixerFields::ReliefAirStreamNodeName,reliefAirNodeName);

  if(airInletNodeName)
  {
    _outdoorAirMixer.setString(OutdoorAir_MixerFields::ReturnAirStreamNodeName,airInletNodeName.get());
  }

  // SupplyAirFlowRateDuringCoolingOperation

  if( modelObject.isSupplyAirFlowRateDuringCoolingOperationAutosized() )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFlowRateDuringCoolingOperation,"Autosize");
  }
  else if( (value = modelObject.supplyAirFlowRateDuringCoolingOperation()) )
  {
    idfObject.setDouble(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFlowRateDuringCoolingOperation,value.get());
  }

  // SupplyAirFlowRateDuringHeatingOperation

  if( modelObject.isSupplyAirFlowRateDuringHeatingOperationAutosized() )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFlowRateDuringHeatingOperation,"Autosize");
  }
  else if( (value = modelObject.supplyAirFlowRateDuringHeatingOperation()) )
  {
    idfObject.setDouble(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFlowRateDuringHeatingOperation,value.get());
  }

  // SupplyAirFlowRateWhenNoCoolingorHeatingisNeeded

  if( modelObject.isSupplyAirFlowRateWhenNoCoolingorHeatingisNeededAutosized() )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFlowRateWhenNoCoolingorHeatingisNeeded,"Autosize");
  } 
  else if( (value = modelObject.supplyAirFlowRateWhenNoCoolingorHeatingisNeeded()) )
  {
    idfObject.setDouble(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFlowRateWhenNoCoolingorHeatingisNeeded,value.get());
  }

  // OutdoorAirFlowRateDuringCoolingOperation
  
  if( modelObject.isOutdoorAirFlowRateDuringCoolingOperationAutosized() )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirFlowRateDuringCoolingOperation,"Autosize");
  }
  else if( (value = modelObject.outdoorAirFlowRateDuringCoolingOperation()) )
  {
    idfObject.setDouble(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirFlowRateDuringCoolingOperation,value.get());
  }

  // OutdoorAirFlowRateDuringHeatingOperation
  
  if( modelObject.isOutdoorAirFlowRateDuringHeatingOperationAutosized() )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirFlowRateDuringHeatingOperation,"Autosize");
  }
  else if( (value = modelObject.outdoorAirFlowRateDuringHeatingOperation()) )
  {
    idfObject.setDouble(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirFlowRateDuringHeatingOperation,value.get());
  }

  // OutdoorAirFlowRateWhenNoCoolingorHeatingisNeeded
  
  if( modelObject.isOutdoorAirFlowRateWhenNoCoolingorHeatingisNeededAutosized() )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirFlowRateWhenNoCoolingorHeatingisNeeded,"Autosize");
  }
  else if( (value = modelObject.outdoorAirFlowRateWhenNoCoolingorHeatingisNeeded()) )
  {
    idfObject.setDouble(ZoneHVAC_PackagedTerminalAirConditionerFields::OutdoorAirFlowRateWhenNoCoolingorHeatingisNeeded,value.get());
  }

  // SupplyAirFanObjectType

  HVACComponent supplyAirFan = modelObject.supplyAirFan();

  if( boost::optional<IdfObject> _supplyAirFan = translateAndMapModelObject(supplyAirFan) )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFanObjectType,_supplyAirFan->iddObject().name() );

    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFanName,_supplyAirFan->name().get());

    if( airOutletNodeName )
    {
      if( _supplyAirFan->iddObject().type() == IddObjectType::Fan_ConstantVolume )
      {
        _supplyAirFan->setString(Fan_ConstantVolumeFields::AirInletNodeName,heatingCoilOutletNodeName);

        _supplyAirFan->setString(Fan_ConstantVolumeFields::AirOutletNodeName,airOutletNodeName.get());
      }
    }
  }

  // HeatingCoilObjectType
  
  HVACComponent heatingCoil = modelObject.heatingCoil();

  if( boost::optional<IdfObject> _heatingCoil = translateAndMapModelObject(heatingCoil) )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::HeatingCoilObjectType,_heatingCoil->iddObject().name() );

    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::HeatingCoilName,_heatingCoil->name().get() ); 

    if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Water )
    {
      _heatingCoil->setString(Coil_Heating_WaterFields::AirInletNodeName,coolingCoilOutletNodeName);

      _heatingCoil->setString(Coil_Heating_WaterFields::AirOutletNodeName,heatingCoilOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Gas )
    {
      _heatingCoil->setString(Coil_Heating_GasFields::AirInletNodeName,coolingCoilOutletNodeName);

      _heatingCoil->setString(Coil_Heating_GasFields::AirOutletNodeName,heatingCoilOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Electric )
    {
      _heatingCoil->setString(Coil_Heating_ElectricFields::AirInletNodeName,coolingCoilOutletNodeName);

      _heatingCoil->setString(Coil_Heating_ElectricFields::AirOutletNodeName,heatingCoilOutletNodeName);
    }
  }

  // CoolingCoilObjectType

  HVACComponent coolingCoil = modelObject.coolingCoil();

  boost::optional<IdfObject> _coolingCoil;

  if( boost::optional<CoilCoolingDXSingleSpeed> dxCoil = coolingCoil.optionalCast<CoilCoolingDXSingleSpeed>() )
  {
    _coolingCoil = translateCoilCoolingDXSingleSpeedWithoutUnitary(dxCoil.get());

    m_map.insert(std::make_pair(coolingCoil.handle(),_coolingCoil.get()));
  }
  else
  {
    _coolingCoil = translateAndMapModelObject(coolingCoil);
  }

  if( _coolingCoil )
  {
    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::CoolingCoilObjectType,_coolingCoil->iddObject().name() );

    idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::CoolingCoilName,_coolingCoil->name().get() );

    if( _coolingCoil->iddObject().type() == IddObjectType::Coil_Cooling_DX_SingleSpeed )
    {
      _coolingCoil->setString(Coil_Cooling_DX_SingleSpeedFields::AirInletNodeName,mixedAirNodeName);

      _coolingCoil->setString(Coil_Cooling_DX_SingleSpeedFields::AirOutletNodeName,coolingCoilOutletNodeName);
    }
  }

  // FanPlacement

  idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::FanPlacement,modelObject.fanPlacement());

  // SupplyAirFanOperatingModeScheduleName
  
  if( boost::optional<Schedule> schedule = modelObject.supplyAirFanOperatingModeSchedule() )
  {
    if( boost::optional<IdfObject> _schedule = translateAndMapModelObject(schedule.get()) )
    {
      idfObject.setString(ZoneHVAC_PackagedTerminalAirConditionerFields::SupplyAirFanOperatingModeScheduleName,_schedule->name().get());
    }
  }

  return idfObject;
}
boost::optional<IdfObject> ForwardTranslator::translateAirLoopHVACUnitaryHeatPumpAirToAir( AirLoopHVACUnitaryHeatPumpAirToAir & modelObject )
{
  boost::optional<std::string> s;
  boost::optional<double> value;

  IdfObject idfObject(IddObjectType::AirLoopHVAC_UnitaryHeatPump_AirToAir);

  m_idfObjects.push_back(idfObject);

  // Name

  s = modelObject.name();
  if( s )
  {
    idfObject.setName(*s);
  }

  // AvailabilityScheduleName

  if( boost::optional<Schedule> schedule = modelObject.availabilitySchedule() )
  {
    if( boost::optional<IdfObject> _schedule = translateAndMapModelObject(schedule.get()) )
    {
      idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::AvailabilityScheduleName,_schedule->name().get());
    }
  }

  // AirInletNodeName

  boost::optional<std::string> airInletNodeName;

  if( boost::optional<ModelObject> mo = modelObject.inletModelObject() )
  {
    if( boost::optional<Node> node = mo->optionalCast<Node>() )
    {
      if( s = node->name() )
      {
        airInletNodeName = s;

        idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::AirInletNodeName,s.get());
      }
    }
  }

  // AirOutletNodeName

  boost::optional<std::string> airOutletNodeName;

  if( boost::optional<ModelObject> mo = modelObject.outletModelObject() )
  {
    if( boost::optional<Node> node = mo->optionalCast<Node>() )
    {
      if( s = node->name() )
      {
        airOutletNodeName = s;

        idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::AirOutletNodeName,s.get());
      }
    }
  }

  // SupplyAirFlowRateDuringCoolingOperation

  if( modelObject.isSupplyAirFlowRateDuringCoolingOperationAutosized() )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFlowRateDuringCoolingOperation,"Autosize");
  }
  else if( value = modelObject.supplyAirFlowRateDuringCoolingOperation() )
  {
    idfObject.setDouble(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFlowRateDuringCoolingOperation,value.get());
  }

  // SupplyAirFlowRateDuringHeatingOperation

  if( modelObject.isSupplyAirFlowRateDuringHeatingOperationAutosized() )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFlowRateDuringHeatingOperation,"Autosize");
  }
  else if( value = modelObject.supplyAirFlowRateDuringHeatingOperation() )
  {
    idfObject.setDouble(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFlowRateDuringHeatingOperation,value.get());
  }

  // SupplyAirFlowRateWhenNoCoolingorHeatingisNeeded

  if( modelObject.isSupplyAirFlowRateWhenNoCoolingorHeatingisNeededAutosized() )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFlowRateWhenNoCoolingorHeatingisNeeded,"Autosize");
  }
  else if( value = modelObject.supplyAirFlowRateWhenNoCoolingorHeatingisNeeded() )
  {
    idfObject.setDouble(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFlowRateWhenNoCoolingorHeatingisNeeded,value.get());
  }

  // ControllingZoneorThermostatLocation

  if( boost::optional<ThermalZone> tz = modelObject.controllingZone() )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::ControllingZoneorThermostatLocation,tz->name().get() );
  }

  // SupplyAirFanName
  
  HVACComponent fan = modelObject.supplyAirFan();

  boost::optional<IdfObject> _fan = translateAndMapModelObject(fan);

  if( _fan )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFanObjectType,_fan->iddObject().name() );

    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFanName,_fan->name().get());
  }

  // HeatingCoilName
  
  boost::optional<IdfObject> _heatingCoil;

  HVACComponent heatingCoil = modelObject.heatingCoil();

  if( boost::optional<CoilHeatingDXSingleSpeed> coilHeatingDXSingleSpeed = heatingCoil.optionalCast<CoilHeatingDXSingleSpeed>() )
  {
    _heatingCoil = translateCoilHeatingDXSingleSpeedWithoutUnitary(coilHeatingDXSingleSpeed.get());

    if( _heatingCoil )
    {
      idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::HeatingCoilObjectType,_heatingCoil->iddObject().name());

      idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::HeatingCoilName,_heatingCoil->name().get());
    }
  }

  // CoolingCoilName

  boost::optional<IdfObject> _coolingCoil;

  boost::optional<CoilCoolingDXSingleSpeed> coolingCoil = modelObject.coolingCoil().optionalCast<CoilCoolingDXSingleSpeed>();

  if( coolingCoil )
  {
    _coolingCoil = translateCoilCoolingDXSingleSpeedWithoutUnitary(coolingCoil.get());
  }

  if( _coolingCoil )
  {
    m_map.insert(std::make_pair(coolingCoil->handle(),_coolingCoil.get()));

    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::CoolingCoilObjectType,_coolingCoil->iddObject().name());

    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::CoolingCoilName,_coolingCoil->name().get());
  }

  // SupplementalHeatingCoilName

  boost::optional<IdfObject> _supplementalHeatingCoil;

  boost::optional<HVACComponent> supplementalHeatingCoil = modelObject.supplementalHeatingCoil();

  if( supplementalHeatingCoil )
  {
    _supplementalHeatingCoil = translateAndMapModelObject(supplementalHeatingCoil.get());
  }

  if( _supplementalHeatingCoil )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplementalHeatingCoilObjectType,
      _supplementalHeatingCoil->iddObject().name());

    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplementalHeatingCoilName,_supplementalHeatingCoil->name().get()); 
  }

  // MaximumSupplyAirTemperaturefromSupplementalHeater

  if( modelObject.isMaximumSupplyAirTemperaturefromSupplementalHeaterAutosized() )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::MaximumSupplyAirTemperaturefromSupplementalHeater,"Autosize");
  }
  else if( value = modelObject.maximumSupplyAirTemperaturefromSupplementalHeater() )
  {
    idfObject.setDouble(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::MaximumSupplyAirTemperaturefromSupplementalHeater,value.get());
  }

  // MaximumOutdoorDryBulbTemperatureforSupplementalHeaterOperation

  if( value = modelObject.maximumOutdoorDryBulbTemperatureforSupplementalHeaterOperation() )
  {
    idfObject.setDouble(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::MaximumOutdoorDryBulbTemperatureforSupplementalHeaterOperation,value.get());
  }

  // FanPlacement

  if( s = modelObject.fanPlacement() )
  {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::FanPlacement,s.get());
  }

  // SupplyAirFanOperatingModeScheduleName

  if( boost::optional<Schedule> schedule = modelObject.supplyAirFanOperatingModeSchedule() )
  {
    boost::optional<IdfObject> _schedule = translateAndMapModelObject(schedule.get());

    if( _schedule )
    {
      idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::SupplyAirFanOperatingModeScheduleName,_schedule->name().get());
    }
  }

  // Dehumidification Control Type
  if (!modelObject.isDehumidificationControlTypeDefaulted()) {
    idfObject.setString(AirLoopHVAC_UnitaryHeatPump_AirToAirFields::DehumidificationControlType,
                        modelObject.dehumidificationControlType());
  }

  // Fill in node names for inner components

  if( airInletNodeName && _fan )
  {
    _fan->setString(Fan_ConstantVolumeFields::AirInletNodeName,airInletNodeName.get());
  }

  //if( airOutletNodeName && _heatingCoil )
  //{
  //  //_heatingCoil->setString(Coil_Heating_DX_SingleSpeedFields::AirOutletNodeName,airOutletNodeName.get());
  //}

  if( _fan && _coolingCoil )
  {
    std::string nodeName = modelObject.name().get() + " Fan - Cooling Coil Node";

    _fan->setString(Fan_ConstantVolumeFields::AirOutletNodeName,nodeName);

    _coolingCoil->setString(Coil_Cooling_DX_SingleSpeedFields::AirInletNodeName,nodeName);
  }

  if( _coolingCoil && _heatingCoil )
  {
    std::string nodeName = modelObject.name().get() + " Cooling Coil - Heating Coil Node";

    _coolingCoil->setString(Coil_Cooling_DX_SingleSpeedFields::AirOutletNodeName,nodeName);

    _heatingCoil->setString(Coil_Heating_DX_SingleSpeedFields::AirInletNodeName,nodeName);
  }

  if( _supplementalHeatingCoil )
  {
    std::string nodeName = modelObject.name().get() + " Heating Coil - Supplemental Coil Node";

    if( _heatingCoil )
    {
      _heatingCoil->setString(Coil_Heating_DX_SingleSpeedFields::AirOutletNodeName,nodeName);
    }

    if( _supplementalHeatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Gas )
    {
      if( airOutletNodeName )
      {
        _supplementalHeatingCoil->setString(Coil_Heating_GasFields::AirOutletNodeName,airOutletNodeName.get()); 

        _supplementalHeatingCoil->setString(Coil_Heating_GasFields::AirInletNodeName,nodeName); 
      }
    }
    else if( _supplementalHeatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Electric )
    {
      if( airOutletNodeName )
      {
        _supplementalHeatingCoil->setString(Coil_Heating_ElectricFields::AirOutletNodeName,airOutletNodeName.get()); 

        _supplementalHeatingCoil->setString(Coil_Heating_ElectricFields::AirInletNodeName,nodeName); 
      }
    }
  }

  return idfObject;
}
boost::optional<IdfObject> ForwardTranslator::translateAirLoopHVACUnitaryHeatCoolVAVChangeoverBypass( AirLoopHVACUnitaryHeatCoolVAVChangeoverBypass & modelObject )
{
  boost::optional<std::string> s;
  boost::optional<double> d;

  // Name
  IdfObject unitarySystem = createRegisterAndNameIdfObject(openstudio::IddObjectType::AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypass, modelObject);

  // Availability Schedule Name
  if( boost::optional<Schedule> availabilitySchedule = modelObject.availabilitySchedule() )
  {
    boost::optional<IdfObject> _availabilitySchedule = translateAndMapModelObject(availabilitySchedule.get());

    if( _availabilitySchedule && _availabilitySchedule->name() )
    {
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::AvailabilityScheduleName,_availabilitySchedule->name().get());
    }
  }

  //  SystemAirFlowRateDuringCoolingOperation
  if( modelObject.isSystemAirFlowRateDuringCoolingOperationAutosized() ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::CoolingSupplyAirFlowRate,"AutoSize");
  } else if( (d = modelObject.systemAirFlowRateDuringCoolingOperation()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::CoolingSupplyAirFlowRate,d.get());
  }

  //  SystemAirFlowRateDuringHeatingOperation
  if( modelObject.isSystemAirFlowRateDuringHeatingOperationAutosized() ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::HeatingSupplyAirFlowRate,"AutoSize");
  } else if( (d = modelObject.systemAirFlowRateDuringHeatingOperation()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::HeatingSupplyAirFlowRate,d.get());
  }
  
  //  SystemAirFlowRateWhenNoCoolingorHeatingisNeeded
  if( modelObject.isSystemAirFlowRateWhenNoCoolingorHeatingisNeededAutosized() ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::NoLoadSupplyAirFlowRate,"AutoSize");
  } else if( (d = modelObject.systemAirFlowRateWhenNoCoolingorHeatingisNeeded()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::NoLoadSupplyAirFlowRate,d.get());
  } 
  
  //  OutdoorAirFlowRateDuringCoolingOperation
  if( modelObject.isOutdoorAirFlowRateDuringCoolingOperationAutosized() ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::CoolingOutdoorAirFlowRate,"AutoSize");
  } else if( (d = modelObject.outdoorAirFlowRateDuringCoolingOperation()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::CoolingOutdoorAirFlowRate,d.get());
  }
  
  //  OutdoorAirFlowRateDuringHeatingOperation
  if( modelObject.isOutdoorAirFlowRateDuringHeatingOperationAutosized() ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::HeatingOutdoorAirFlowRate,"AutoSize");
  } else if( (d = modelObject.outdoorAirFlowRateDuringHeatingOperation()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::HeatingOutdoorAirFlowRate,d.get());
  }
  
  //  OutdoorAirFlowRateWhenNoCoolingorHeatingisNeeded
  if( modelObject.isOutdoorAirFlowRateWhenNoCoolingorHeatingisNeededAutosized() ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::NoLoadOutdoorAirFlowRate,"AutoSize");
  } else if( (d = modelObject.outdoorAirFlowRateWhenNoCoolingorHeatingisNeeded()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::NoLoadOutdoorAirFlowRate,d.get());
  } 

  //  OutdoorAirFlowRateMultiplierScheduleName
  if( boost::optional<Schedule> schedule = modelObject.outdoorAirFlowRateMultiplierSchedule() ) {
    if( boost::optional<IdfObject> _schedule = translateAndMapModelObject(schedule.get()) ) {
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::OutdoorAirFlowRateMultiplierScheduleName,_schedule->name().get());
    }
  }

  boost::optional<std::string> airInletNodeName;
  boost::optional<std::string> airOutletNodeName;

  // Air Inlet Node Name
  if( boost::optional<ModelObject> mo = modelObject.inletModelObject() )
  {
    if( boost::optional<Node> node = mo->optionalCast<Node>() )
    {
      airInletNodeName = node->name().get();
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::AirInletNodeName,node->name().get());
    }
  }

  // Air Outlet Node Name
  if( boost::optional<ModelObject> mo = modelObject.outletModelObject() )
  {
    if( boost::optional<Node> node = mo->optionalCast<Node>() )
    {
      airOutletNodeName = node->name().get();
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::AirOutletNodeName,node->name().get());
    }
  }

  std::string baseName = modelObject.name().get();

  //  BypassDuctMixerNodeName
  std::string bypassDuctMixerNodeName = baseName + " Bypass Duct Mixer Node";
  unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::BypassDuctMixerNodeName,bypassDuctMixerNodeName);
  
  //  BypassDuctSplitterNodeName
  std::string bypassDuctSplitterNodeName = baseName + " Bypass Duct Splitter Node";
  unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::BypassDuctSplitterNodeName,bypassDuctSplitterNodeName);
  
  //  OutdoorAirMixerObjectType
  unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::OutdoorAirMixerObjectType,"OutdoorAir:Mixer");
  
  //  OutdoorAirMixerName
  std::string outdoorAirMixerName = baseName + " Outdoor Air Mixer";
  unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::OutdoorAirMixerName,outdoorAirMixerName);

  //  SupplyAirFanName
  boost::optional<IdfObject> _fan;
  if( boost::optional<HVACComponent> fan = modelObject.supplyAirFan() ) {
    if( (_fan = translateAndMapModelObject(fan.get())) ) {
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::SupplyAirFanObjectType,_fan->iddObject().name());
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::SupplyAirFanName,_fan->name().get());
    }
  }
  
  bool blowThroughFan = false;
  //  SupplyAirFanPlacement
  if( (s = modelObject.supplyAirFanPlacement()) ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::SupplyAirFanPlacement,s.get());
    if( istringEqual(s.get(),"BlowThrough") ) {
      blowThroughFan = true;
    }
  }
  
  //  SupplyAirFanOperatingModeScheduleName
  if( boost::optional<Schedule> schedule = modelObject.supplyAirFanOperatingModeSchedule() ) {
    if( boost::optional<IdfObject> _schedule = translateAndMapModelObject(schedule.get()) ) {
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::SupplyAirFanOperatingModeScheduleName,_schedule->name().get()); 
    }
  }

  // Heating Coil Object Type
  // Heating Coil Name
  boost::optional<IdfObject> _heatingCoil;
  if( boost::optional<HVACComponent> heatingCoil = modelObject.heatingCoil() )
  {
    _heatingCoil = translateAndMapModelObject(heatingCoil.get());

    if( _heatingCoil && _heatingCoil->name() )
    {
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::HeatingCoilObjectType,_heatingCoil->iddObject().name());
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::HeatingCoilName,_heatingCoil->name().get());
    }
  }

  // Cooling Coil Object Type
  // Cooling Coil Name
  boost::optional<IdfObject> _coolingCoil;
  if( boost::optional<HVACComponent> coolingCoil = modelObject.coolingCoil() )
  {
    if( boost::optional<CoilCoolingDXSingleSpeed> dxCoil = coolingCoil->optionalCast<CoilCoolingDXSingleSpeed>() ) {
      _coolingCoil = translateCoilCoolingDXSingleSpeedWithoutUnitary(dxCoil.get());
      m_map.insert(std::make_pair(coolingCoil->handle(),_coolingCoil.get()));
    } else {
      _coolingCoil = translateAndMapModelObject(coolingCoil.get());
    }

    if( _coolingCoil && _coolingCoil->name() )
    {
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::CoolingCoilObjectType,_coolingCoil->iddObject().name());
      unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::CoolingCoilName,_coolingCoil->name().get());
    }
  }

  //  PriorityControlMode
  if( (s = modelObject.priorityControlMode()) ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::PriorityControlMode,s.get());
  }
  
  //  MinimumOutletAirTemperatureDuringCoolingOperation
  if( (d = modelObject.minimumOutletAirTemperatureDuringCoolingOperation()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::MinimumOutletAirTemperatureDuringCoolingOperation,d.get());
  }
  
  //  MaximumOutletAirTemperatureDuringHeatingOperation)(Maximum Outlet Air Temperature During Heating Operation))
  if( (d = modelObject.maximumOutletAirTemperatureDuringHeatingOperation()) ) {
    unitarySystem.setDouble(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::MaximumOutletAirTemperatureDuringHeatingOperation,d.get());
  } 
  
  // DehumidificationControlType
  if( (s = modelObject.dehumidificationControlType()) ) {
    unitarySystem.setString(AirLoopHVAC_UnitaryHeatCool_VAVChangeoverBypassFields::DehumidificationControlType,s.get());
  }

  if( _fan && _coolingCoil && _heatingCoil )
  {
    std::string fanOutletNodeName;
    std::string fanInletNodeName;
    std::string heatOutletNodeName;
    std::string heatInletNodeName;
    std::string coolOutletNodeName;
    std::string coolInletNodeName;
    std::string mixedAirNodeName;

    if( blowThroughFan ) {
      mixedAirNodeName = baseName + " Mixed Air Node";
      fanInletNodeName = mixedAirNodeName;
      fanOutletNodeName = baseName + " Fan Outlet Node";
      coolInletNodeName = fanOutletNodeName;
      coolOutletNodeName = baseName + " Cooling Coil Outlet Node";
      heatInletNodeName = coolOutletNodeName;
      heatOutletNodeName = bypassDuctSplitterNodeName;
    } else {
      mixedAirNodeName = baseName + " Mixed Air Node";
      coolInletNodeName = mixedAirNodeName;
      coolOutletNodeName = baseName + " Cooling Coil Outlet Node";
      heatInletNodeName = coolOutletNodeName;
      heatOutletNodeName = baseName + " Heating Coil Outlet Node";
      fanInletNodeName = heatOutletNodeName;
      fanOutletNodeName = bypassDuctSplitterNodeName;
    }

    if( _fan->iddObject().type() == IddObjectType::Fan_ConstantVolume )
    {
      _fan->setString(Fan_ConstantVolumeFields::AirInletNodeName,fanInletNodeName);
      _fan->setString(Fan_ConstantVolumeFields::AirOutletNodeName,fanOutletNodeName);
    }
    else if( _fan->iddObject().type() == IddObjectType::Fan_VariableVolume )
    {
      _fan->setString(Fan_VariableVolumeFields::AirInletNodeName,fanInletNodeName);
      _fan->setString(Fan_VariableVolumeFields::AirOutletNodeName,fanOutletNodeName);
    }
    else if( _fan->iddObject().type() == IddObjectType::Fan_OnOff )
    {
      _fan->setString(Fan_OnOffFields::AirInletNodeName,fanInletNodeName);
      _fan->setString(Fan_OnOffFields::AirOutletNodeName,fanOutletNodeName);
    }

    fixSPMsForUnitarySystem(modelObject,fanInletNodeName,fanOutletNodeName);

    if( _coolingCoil->iddObject().type() == IddObjectType::Coil_Cooling_DX_SingleSpeed )
    {
      _coolingCoil->setString(Coil_Cooling_DX_SingleSpeedFields::AirInletNodeName,coolInletNodeName);
      _coolingCoil->setString(Coil_Cooling_DX_SingleSpeedFields::AirOutletNodeName,coolOutletNodeName);
    }
    else if( _coolingCoil->iddObject().type() == IddObjectType::Coil_Cooling_DX_TwoSpeed )
    {
      _coolingCoil->setString(Coil_Cooling_DX_TwoSpeedFields::AirInletNodeName,coolInletNodeName);
      _coolingCoil->setString(Coil_Cooling_DX_TwoSpeedFields::AirOutletNodeName,coolOutletNodeName);
    }
    else if( _coolingCoil->iddObject().type() == IddObjectType::Coil_Cooling_Water )
    {
      _coolingCoil->setString(Coil_Cooling_WaterFields::AirInletNodeName,coolInletNodeName);
      _coolingCoil->setString(Coil_Cooling_WaterFields::AirOutletNodeName,coolOutletNodeName);
    }
    else if( _coolingCoil->iddObject().type() == IddObjectType::Coil_Cooling_WaterToAirHeatPump_EquationFit )
    {
      _coolingCoil->setString(Coil_Cooling_WaterToAirHeatPump_EquationFitFields::AirInletNodeName,coolInletNodeName);
      _coolingCoil->setString(Coil_Cooling_WaterToAirHeatPump_EquationFitFields::AirOutletNodeName,coolOutletNodeName);
    }

    if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_DX_SingleSpeed )
    {
      _heatingCoil->setString(Coil_Heating_DX_SingleSpeedFields::AirInletNodeName,heatInletNodeName);
      _heatingCoil->setString(Coil_Heating_DX_SingleSpeedFields::AirOutletNodeName,heatOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Electric )
    {
      _heatingCoil->setString(Coil_Heating_ElectricFields::AirInletNodeName,heatInletNodeName);
      _heatingCoil->setString(Coil_Heating_ElectricFields::AirOutletNodeName,heatOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Gas )
    {
      _heatingCoil->setString(Coil_Heating_GasFields::AirInletNodeName,heatInletNodeName);
      _heatingCoil->setString(Coil_Heating_GasFields::AirOutletNodeName,heatOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Water )
    {
      _heatingCoil->setString(Coil_Heating_WaterFields::AirInletNodeName,heatInletNodeName);
      _heatingCoil->setString(Coil_Heating_WaterFields::AirOutletNodeName,heatOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_Desuperheater )
    {
      _heatingCoil->setString(Coil_Heating_DesuperheaterFields::AirInletNodeName,heatInletNodeName);
      _heatingCoil->setString(Coil_Heating_DesuperheaterFields::AirOutletNodeName,heatOutletNodeName);
    }
    else if( _heatingCoil->iddObject().type() == IddObjectType::Coil_Heating_WaterToAirHeatPump_EquationFit )
    {
      _heatingCoil->setString(Coil_Heating_WaterToAirHeatPump_EquationFitFields::AirInletNodeName,heatInletNodeName);
      _heatingCoil->setString(Coil_Heating_WaterToAirHeatPump_EquationFitFields::AirOutletNodeName,heatOutletNodeName);
    }

    IdfObject _outdoorAirMixer(IddObjectType::OutdoorAir_Mixer);
    _outdoorAirMixer.setName(outdoorAirMixerName);
    m_idfObjects.push_back(_outdoorAirMixer);

    std::string oaNodeName = baseName + " OA Node";
    _outdoorAirMixer.setString(OutdoorAir_MixerFields::MixedAirNodeName,mixedAirNodeName);
    _outdoorAirMixer.setString(OutdoorAir_MixerFields::OutdoorAirStreamNodeName,oaNodeName);

    IdfObject _oaNodeList(openstudio::IddObjectType::OutdoorAir_NodeList);
    _oaNodeList.setString(0,oaNodeName);
    m_idfObjects.push_back(_oaNodeList);
    _outdoorAirMixer.setString(OutdoorAir_MixerFields::ReliefAirStreamNodeName,baseName + " Relief Air Node");
    _outdoorAirMixer.setString(OutdoorAir_MixerFields::ReturnAirStreamNodeName,bypassDuctMixerNodeName);
  }

  return unitarySystem;
}