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Siemens BACNET 125-699 Owner's Manual

Heat pump controller – multistage
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Siemens BACnet Heat
Pump Controller – Multi-
Stage Owner's Manual
125-699
Rev. BA, July 2009
Siemens Building Technologies, Inc.
i

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  Summary of Contents for Siemens BACNET 125-699

  • Page 1 Siemens BACnet Heat Pump Controller – Multi- Stage Owner’s Manual 125-699 Rev. BA, July 2009 Siemens Building Technologies, Inc.
  • Page 3 For further information, contact your nearest Siemens Building Technologies, Inc. representative. Copyright 2009 by Siemens Building Technologies, Inc. TO THE READER Your feedback is important to us. If you have comments about this document, please contact your local Siemens Building Technologies representative. CREDITS Product or company names mentioned herein may be the trademarks of their respective owners Pirnted in the U.S.A.
  • Page 5: Table Of Contents

    Control Temperature Setpoints... 7 Day/Night Mode ... 7 Night Mode Override Switch ... 7 Control Loops ... 7 Mixed Air Control Loop ... 7 Calibration ... 8 Heating and Cooling Switchover ... 9 Electric Reheat ... 9 Siemens Building Technologies, Inc.
  • Page 6 Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Compressor Operation ... 9 Fan Operation ... 9 Power Failure Recovery ... 10 Centralized Alarm Monitoring ... 10 Overriding DOs ... 10 Fail-safe Operation ... 10 Using Auxiliary Points ... 11 Application 2583: Multiple Compressor Heat Pump with Reversing Valve Control and Mixed Air Control ...
  • Page 7: How To Use This Manual

    How to Use This Manual This manual is written for the owner and user of the Siemens Building Technologies, Inc. Heat Pump Controller—Multi-Stage, often referred to as controller for the remainder of this manual. This manual is designed to help you become familiar with the controller and its applications.
  • Page 8: Manual Symbols

    Symbol CAUTION: WARNING: Getting Help For more information about the Siemens BACnet Heat Pump Controller—Multi-Stage, contact your local Siemens Building Technologies representative. Meaning Indicates that equipment damage or loss of data may occur if the user does not follow a procedure as specified.
  • Page 9: Product Overview

    Product Overview Introduction The Siemens BACnet Heat Pump Controller—Multi-Stage is used in multiple compressor heat pump applications. lt provides Direct Digital Control (DDC) for two heat pump applications. The controller can operate as an independent, stand-alone DDC room controller or it can be networked with a field panel.
  • Page 10: Hardware Inputs

    Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual COVER DO 1 DO 2 DO 3 DO 4 24 V-AC RX TX BST NO C NO C NO C NO C FLN TRUNK C H GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16...
  • Page 11: Digital

    C H EGRND WHEN THIRD TER- MINATION IS PRESENT 24 V COMMON 24 V HOT E GRND Figure 3. Power Wiring. Siemens Building Technologies, Inc. 3-WIRE FLN TRUNK REFERENCE (EQUIPOTENTIAL) GROUNDED AT SINGLE LOCATION TYPICALLY AT FIELD PANEL REFERENCE CONNECTION ABSENT...
  • Page 12: Controller Led Indicators

    Building Technologies representative. Actuators The actuator used with the Siemens BACnet Heat Pump Controller—Multi-Stage may be an optional floating control or 0 to 10V spring return electronic damper motor that is powered through the controller to position an outside air damper.
  • Page 13: Related Equipment

    Related Equipment • Relay Module • Damper Actuator(s) • Mixed Air Temperature Sensor (optional) • Room Temperature Sensor Contact your local Siemens Building Technologies, Inc. representative for product numbers and more information. Siemens Building Technologies, Inc. Product Overview...
  • Page 14 Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Siemens Building Technologies, Inc.
  • Page 15: Applications

    Applications Basic Operation The Siemens BACnet Heat Pump Controller—Multi-Stage provides Direct Digital Control (DDC) technology for multiple compressor heat pump applications. Temperature control varies with the application. If present, mixed air temperature control and up to three stages of electric heat or staged heating and cooling can be provided.
  • Page 16: Calibration

    Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual The mixed air loop controls only the mixed air portion of the application. The mixed air damper motor can be either a spring return or floating control damper motor. • For a spring return damper, the mixed air loop will control the damper through its 0 to 10 volt analog output and the digital outputs will be spare.
  • Page 17: Heating And Cooling Switchover

    The fan will turn OFF only after the following two conditions have been met: • Free cooling is not provided by the mixed air control loop. • All compressors and stages of electric heat have been OFF for at least 30 seconds. Siemens Building Technologies, Inc. Applications...
  • Page 18: Power Failure Recovery

    This lessens the demand of having all the electrical equipment starting at once. Centralized Alarm Monitoring DI 6 can be used to monitor an input that changes state when the heat pump is in alarm. DI 6 can be unbundled to send alarm information to the field panel for centralized alarm monitoring.
  • Page 19: Using Auxiliary Points

    Using Auxiliary Points lt is possible to have extra points available on a Heat Pump Controller—Multi-Stage in addition to the ones used by the current application that is running in the controller. If these extra points will be controlled by a field panel, they must be unbundled at the field panel.
  • Page 20: Application 2583: Multiple Compressor Heat Pump With Reversing Valve Control And Mixed Air Control

    1. If the heat pump cycles excessively, temperature swings in the room are excessive, or there is trouble maintaining the setpoint, the cooling loop, the heating loop, or both need to be tuned. Contact your local Siemens Building Technologies representative for more information.
  • Page 21 COMPRESSOR 2 REVERSING VALVE COIL WATER SOURCE * THE O.A. AND R.A. DAMPERS MUST BE MECHANICALLY LINKED. ON BOARD, AO1 IS GROUPED PYSICALLY WITH AO2 AND AO3 Siemens Building Technologies, Inc. SUPPLY AIR COMPRESSOR 3 REVERSING REVERSING VALVE VALVE COIL COIL 1ST STAGE ELECTRIC HEAT (OPTIONAL) COMPRESSOR 2;...
  • Page 22: Application 2584: Multiple Heating And Cooling Heat Pump With Mixed Air And Internal Reversing Valve Control

    1. lf the heat pump cycles excessively, temperature swings in the room are excessive, or there is trouble maintaining the setpoint, the cooling loop, the heating loop or both need to be tuned. Contact your local Siemens Building Technologies representative for more information.
  • Page 23 * CONTROLLED INTERNALLY BY THE HEAT PUMP ** THE O.A. AND R.A. DAMPERS MUST BE MECHANICALLY LINKED. SPARE AI (10K MIXED AIR TEMPERATURE SENSOR 10K ON BOARD, AO1 IS GROUPED PYSICALLY WITH AO2 AND AO3 Siemens Building Technologies, Inc. SUPPLY AIR ELECTRIC COMPRESSOR 2 HEAT (OPTIONAL)
  • Page 24: Application 2590: Bacnet Heat Pump Slave Mode

    Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Application 2590: BACnet Heat Pump Slave Mode Application 2590 is the default slave mode application that comes up when power is first applied to the controller. Slave mode provides no control. lts purpose is to allow the operator to perform equipment checkout before a control application is put into effect and to set some basic controller parameters (CTLR ADDRESS, APPLlCATlON, etc.).
  • Page 25 Applications Siemens Building Technologies, Inc.
  • Page 26: Point Database

    Point Database Overview This chapter presents a description of the Siemens BACnet Heat Pump Controller—Multi- Stage point database including point descriptors, point addresses, and a listing of applications in which each point is found. Description Address CTLR ADDRESS 2583, 2584, 2590...
  • Page 27 HTG CMP2 ON CMP2 OFF HTG CMP2 OFF WALL SWITCH 2583, 2584, 2590 Siemens Building Technologies, Inc. Application 2583, 2584 Minimum temperature setpoint in degrees that the controller can use from the setpoint dial. This overrides any temperature setpoint from the setpoint dial that falls below this minimum.
  • Page 28 Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Description Address Dl OVRD SW {19} 2583, 2584, 2590 OVRD TIME NGT OVRD {21} RMTMP OFFSET FREE CLG {23} DI 2 {24} 2583, 2584, 2590 DI 5 {25} 2583, 2584, 2590...
  • Page 29 DAMPER TYPE AO DIR.REV AOV1 {40} 2583, 2584, 2590 Siemens Building Technologies, Inc. Application Indicates the mode in which the controller is operating. Day temperature setpoints are used in day mode. Night temperature setpoints are used in night mode. This point is normally set by the field panel.
  • Page 30 Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Description Address DO 1 {41} 2583, 2584, 2590 DO 2 {42} 2583, 2584, 2590 DO 3 {43} ELEC HEAT {43} ELEC HEAT 1 {43} DO 4 {44} HTG CMP 1 {44}...
  • Page 31 Spare analog input, switch selectable to be 0-10V or 4- 20mA (consult your Siemens Building Technologies representative). Or, spare DI dry contact, see DI 3. The physical input can not be used for both analog and digital input at the same time.
  • Page 32 Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Description Address CYCLE FAN FREE CLG ON FREE CLG OFF CLG P GAIN CLG I GAIN STPT SPAN STAT TYPE HTG P GAIN HTG I GAIN HP DO OVRD STPT OFFSET...
  • Page 33 CMP1 MlN OFF HTG1 MlN OFF CMP1 MlN ON HTG1 MlN ON RVAL SW TIME Siemens Building Technologies, Inc. Application 2583, 2584 Heating temperature control loop output value in percent. 2584 Value, in percent, that the heating Ioopout must exceed for the electric heat to turn ON.
  • Page 34 Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Description Address SWITCH DBAND NGT MA CTL {91} CTL STPT {92} MA STPT {93} EHEAT 2 ON EHEAT 3 ON CAL TIMER 2583, 2584, 2590 AOV 3 {97} 2583, 2584, 2590...
  • Page 35 Point Database Siemens Building Technologies, Inc.
  • Page 36: Troubleshooting

    Siemens BACnet Heat Pump Controller—Multi-Stage. You are not required to do any controller troubleshooting. You may want to contact your local Siemens Building Technologies representative if a problem occurs or you have any questions about the controller.
  • Page 37: Safety Features

    LEDs located on the circuit board. See the Controller LED lndicators section of Chapter 1, Product Overview for more information about LEDs. The TX and RX LEDs indicate communication over the FLN. NOTE: Siemens Building Technologies, Inc. Troubleshooting ) at the field panel.
  • Page 38: Glossary

    Analog Output. Physical point that generates a continuous variable signal. BACnet A data communication protocol for Building Automation and Control networks. centralized control Type of control offered by a controller that is connected by means of a Field Level Network (FLN). Cubic Feet per Minute. Siemens Building Technologies, Inc.
  • Page 39: Control Loop

    Field Level Network. Network consisting of equipment controllers, FLN end devices, fume hoods, etc. Human Machine Interface. Terminal and its interface program that allows you to communicate with a field panel or equipment controller. Siemens Building Technologies, Inc. Glossary...
  • Page 40: Override Switch

    Siemens BACnet Heat Pump Controller - Multi-Stage Owner’s Manual Liters per Second. loopout The output of the control loop expressed as a percentage. override switch Button on a room temperature sensor that an occupant can press to change the status of a room from unoccupied to occupied (or from night to day) for a predetermined time.
  • Page 41: Stand-Alone Control

    Type of control offered by a controller that is providing independent DDC control to a space. Equipment Controller Siemens Building Technologies, Inc. product family of equipment controllers (one is the BACnet Heat Pump Controller — Electronic Output) that house the applications software used to control terminal units, such as heat pumps, VAV terminal boxes, fan coil units, unit ventilators, etc.
  • Page 42: Index

    ... 7 auxiliary points, using ... 11 Basic Sanity Test (BST) ... 29 basic service information ... 28 BST LED ... 4, 29 Siemens Building Technologies, Inc. centralized alarm monitoring ... 10 centralized control ... 30 communication wiring ... 3 compressor operation ...
  • Page 43 ... 10 power wiring ... 3 pressure dependent ... 32 preventive maintenance ... 28 Siemens Building Technologies, Inc. related equipment ... 5 relay module ... 5 reversing valve operation ... 12 Room Temperature Sensor ... 4, 18 RTS ...

This manual is also suitable for:

Bacnet 2583Bacnet 2584Bacnet 2590