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Siemens BACnet
VAV Actuator
Owner’s Manual
125-5037 Rev. AA, February 2008
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Rev. AA, February 2008 NOTICE The information contained within this document is subject to change without notice and should not be construed as a commitment by Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. assumes no responsibility for any errors that may appear in this document. All software described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. WARNING This equipment generates, use
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Table of Contents How To Use This Manual .............................................................................................. V Manual Organzation ...................................................................................................... V Manual Conventions ..................................................................................................... VI Manual Symbols .............................................................................................
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Table of Contents Fail-safe Operation .................................................................................................... 7 Heating and Cooling Switchover ............................................................................... 7 Modulate Damper During Heating Mode (optional) ................................................... 7 Hot Water Reheat ...................................................................................................... 8 Electric Reheat ..
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Siemens BACnet VAV Actuator Owner’s Manual Point Database .............................................................................................................. 20 Overview .................................................................................................................... 20 Troubleshooting ............................................................................................................ 29 Basic Service Information .......................................
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How To Use This Manual This manual is written for the owner and user of Siemens Building Technologies BACnet VAV Actuator. It is designed to help you become familiar with the Siemens BACnet VAV Actuator and its applications. This section covers manual organization, manual conventions, symbols used in the manual, and other information that will help you use this manual. Manual Organzation This manual contains the following chapters: • Chapter 1, Hardware, describes the hardware compone
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How To Use This Manual Manual Conventions The following table lists conventions to help you use this manual in a quick and efficient manner. Convention Example Actions that you Type F for Field panels. should perform are Click OK to save changes and close the dialog box. specified in boldface font. Error and system The message Report Definition successfully renamed messages are appears in the status bar. displayed in Courier New font. New terms appearing The Open Processor conti
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1 Product Overview Introduction The BACnet VAV Actuator is the Siemens Building Technologies, Inc. FLN controller used in pressure independent Variable Air Volume applications (Figure 1). It provides Direct Digital Control (DDC) for eight applications, and can operate independently as a stand-alone DDC room controller or networked with a field panel. The controller provides all input/output, system, and local communication connections. Hardware consists of the controller and the mount
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Product Overview Air Velocity Sensor BACnet Connection Status/DO LEDs Power Connection Airflow Pickup Tubes Figure 1. Siemens BACnet VAV Actuator. Hardware Inputs Analog • Air Velocity Sensor (AVS) • Duct temperature sensor (optional) Application 2561 • Room temperature sensor (RTS) • Room temperature setpoint dial (optional) Digital • Night mode override (optional) • Wall switch (optional) Hardware Outputs Analog • None 2 Siemens Building Technologies, Inc. TEC0496R1
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Siemens BACnet VAV Actuator Owner’s Manual Digital Application 2560, 2561, 2562, 2563 • Autozero Module (AZM) (optional) All • Damper Actuator 2565, 2566, 2567 • Fan 2563 • First valve actuator (required) 2563 • Second valve actuator (optional) or AZM (optional) 2562 • Stage 1 electric reheat; or, 2-position heating valve 2564, 2566 • Stage 1 electric reheat 2562, 2564, 2566 • Stage 2 electric reheat (optional) 2562, 2564, 2566 • Stage 3 electric reheat (opti
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Product Overview Communication Wiring The controller connects to the field panel by means of a Floor Level Network (FLN) trunk. Communication wiring connects to the three screw terminals on the controller labeled “+” (positive), “-“(negative), and “S” (Shield) (Figure 3). FLN TRUNK 3-Wire Network Interface +- e to earth Terminator Note: = System Common (SHIELD) (SHIELD) 120 ohm (-) (-) ½ W (+) (+) 120 ohm ½ W Wirenut NOTE: When wiring a 3-wire system to a 2-wire system see the Wirin
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Siemens BACnet VAV Actuator Owner’s Manual Duct Temperature Sensor An optional duct temperature sensor provides duct air temperature sensing inputs to the controller. For more information about temperature sensors, contact your local Siemens Building Technologies, Inc. representative. Related Equipment • Autozero Module (optional) 540-200 • Relay Module • Damper Actuator(s) • Duct Temperature Sensor (10K Ω) (optional) • Room Temperature Sensor Contact your local Siemens Building
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2 Applications Basic Operation The BACnet VAV Actuator provides Direct Digital Control (DDC) for Variable Air Volume (VAV) terminal box applications. Temperature control varies with the application. If present, heating can be provided by hot water, up to three stages of electric reheat, or optional baseboard radiation. Sequencing Logic (optional) This application has the additional capability to sequence the flow and mechanical heating when heated supply air is available. Control Te
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Siemens BACnet VAV Actuator Owner’s Manual Calibration Air Velocity Sensor - Calibration of the controller's internal air velocity sensor is periodically required to maintain accurate air velocity readings. Calibration may be set to take place automatically or manually. Autozero Module (AZM) – Used when damper cannot be closed and constant airflow is needed. • For a controller used with an AZM, calibration occurs without closing the damper. Application 2560, 2561, 2562, 2563. • For a
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Applications Hot Water Reheat CAUTION: • Do not set HTG FLOW MIN to 0 cfm (0 lps). A minimum airflow should be provided across the heating coils when the heating valve is open. When the controller is in cooling mode, the heating valve(s) are closed. The heating loop modulates the heating valve(s) to warm up the room. In cooling mode, the heating valve is closed. Electric Reheat CAUTION: Verify that the equipment is supplied with safeties by others to ensure that there is ai
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Siemens BACnet VAV Actuator Owner’s Manual Application 2560 VAV Cooling Only Overview In Application 2560, 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 Figure 5. Supply Air Damper 3 to 5 Straight Duct Diameters required for proper sensor reading Supply Air SAFETIES BY OTHERS Air Velocity Sensor Modulating Damper Actuator Spare DO or Autozero Module (Opt.)
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Applications Application 2561 VAV Cooling or Heating Overview In Application 2561, 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 in heating mode. See Figure 6. Supply Air Damper 3 to 5 Straight Duct Diameters required for proper sensor reading Supply Air SAFETIES BY Air OTHERS Velocity Sensor Modulating Damper Actuator Spare
