Siemens Understanding VAV Systems and Applications with Technology

Page 17

Chapter 2 – Applications

3.“Safeties by Others”: This note implies that the associated equipment has safety features installed, for example adding mechanical stops to the dampers.

Application 2860 VAV Cooling Only

In Application 2860, the controller modulates the supply air damper of the terminal box for cooling. In order for it to work properly, the central air-handling unit must provide cool supply air.

See the following figure.

Application 2861 VAV Cooling or Heating

In Application 2861, the controller modulates the supply air damper of the terminal box for cooling and heating. In order for it to work properly, the central air-handling unit must provide cool supply air in cooling mode and warm air during heating mode.

See the following figure.

Application 2862 VAV with Electric Reheat or Baseboard Radiation

 

In Application 2862, the controller modulates the supply air damper of the terminal box

 

for cooling and controls stages of electric reheat or baseboard radiation for heating.

 

When in heating, the terminal box either maintains minimum airflow or modulates the

 

supply air damper. In order for the terminal box to work properly, the central air-

 

handling unit must provide supply air.

 

See the following figure.

 

17

 

 

 

 

Siemens Industry, Inc.

BACnet ATEC Owner's Manaul

125-5050, Rev. AA

4/20/2010

 

Image 17
Contents Siemens Industry, Inc Siemens BACnet AtecPage FCC Regulations Service StatementCopyright Notice Credits To the ReaderTable of contents Using the Controller as a Point Extension Device Manual Conventions How To Use This ManualManual Organization Getting Help Manual SymbolsWhere to Send Comments Ordering Notes Product OverviewBACnet Atec Electronic Output Applications Application DescriptionHardware Outputs Hardware InputsAnalog DigitalApplication Power WiringController LED Indicators Communication WiringController LEDs IndicationRoom Temperature Sensor Temperature SensorsDuct Temperature Sensor Related EquipmentBasic Operation ApplicationsCalibration Heating and Cooling SwitchoverDamper Status Operation Fail-safe OperationElectric Reheat Modulate Damper During Heating Mode optionalHot Water Reheat Application 2861 VAV Cooling or Heating Application 2860 VAV Cooling OnlyElectric Heat Interlock Application 2863 VAV with Hot Water ReheatBaseboard Radiation Fan Operation Application 2864 VAV Series Fan Powered with Electric ReheatInsert TEC2564CD Insert TEC2566CD Using Auxiliary Points Application 2897 Slave ModeUsing the Controller as a Point Extension Device Insert TEC2567CDApplications Descriptor Address Application Description Point DatabaseDescriptor Address1 Descriptor Address1 Application Description VLV POS MTR SetupVLV1 POS MTR2 TimingSwitch Time Switch LimitFlow CTL Flow MINCAL Setup Switch DbandCAL Timer SetupPreventive Maintenance Chaper 4 TroubleshootingBasic Service Information Controller LEDs Safety FeaturesGlossary Field panel Override switchLps LoopoutStand-alone control Slave modeTerminal Equipment Controller UnbundleIndex Duct temperature sensor, 15 RTS Index Communication wiring Wiring Power wiring 125-5050, Rev. AA