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Trane Tracer ZN511 Installation And Operation Manual

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Tracer
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CNT-SVX06B-EN

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Summary of Contents for Trane Tracer ZN511

  • Page 1: Tracer Zn511 Zone Controller

    Installation and Operation Tracer ZN511 ™ Zone Controller CNT-SVX06B-EN...
  • Page 3 Installation and Operation Tracer ZN511 ™ Zone Controller CNT-SVX06B-EN April 2005...
  • Page 4 CNT-SVX06B-EN...
  • Page 5 Although Trane has tested the hardware and software described in this guide, no guarantee is offered that the hardware and software are error free. Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any per- son of such revision or change.
  • Page 6 CNT-SVX06B-EN...
  • Page 7 NOTICE: Warnings and Cautions appear at appropriate sections throughout this manual. Read these carefully: WARNING Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
  • Page 8 CNT-SVX06B-EN...

  • Page 9: Table Of Contents

    Contents Chapter 1 Overview and specifications ....1 Product description ......... . 1 Storage environment .
  • Page 10 Contents ZN: Zone temperature ........19 SET: Local set point.
  • Page 11 Contents Chapter 6 Applications for the 1 heat/1 cool configuration......33 Binary inputs for 1 heat/1 cool applications ..... . 34 BI1: Low-temperature detection .
  • Page 12 Contents Unit protection strategies ........55 Smart reset .

  • Page 13: Chapter 1 Overview And Specifications

    For information about using the Rover service tool, see the Rover Installation/Operation/Programming guide (EMTX- SVX01A-EN). Storage environment If a Tracer ZN511 zone controller is to be stored for a substantial amount of time, store it in an indoor environment that meets the following requirements: •...

  • Page 14: Agency Listing/Compliance

    Chapter 1 Overview and specifications Agency listing/compliance CE—Immunity: EN 50082-1:1997; EN 50082-2:1995 CE—Emissions: EN 50081-1:1992 (CISPR 22) Class B UL and C-UL 916 listed: Energy management system UL 94-5V (UL flammability rating for plenum use) FCC Part 15, Class A Dimensions Plastic-cover model dimensions For complete dimensional drawing, see Figure 1 on page 3.
  • Page 15 Clearances Figure 1. ZN511 plastic-cover model dimensions and clearances 1 in. (25 mm) 4 in. 4 in. (102 mm) (102 mm) 4 in. (102 mm) 6.875 in. 5.625 in. 6.31 in. (175 mm) (143 mm) (160 mm) 5.375 in. (137 mm) 2 in.

  • Page 16: Additional Components

    Chapter 1 Overview and specifications Additional components The Tracer ZN511 zone controller may require the use of additional com- ponents for monitoring and proper control of the associated fan coil or heat pump. Using these components depends on the application. They are not included with the Tracer ZN511 zone controller.

  • Page 17: Output Relays

    Output relays Relays for fan (speed) control connected to the Tracer ZN511 binary out- puts cannot exceed 12 VA (0.5 A) current draw at 24 Vac. Valve and damper actuators Actuators cannot exceed 12 VA draw at 24 Vac.
  • Page 18 Chapter 1 Overview and specifications CNT-SVX06B-EN...

  • Page 19: Chapter 2 General Wiring Information

    Chapter 2 General wiring information This chapter provides specifications and general information about wir- ing the Tracer ZN511 zone controller. The controller requires wiring for: Input/output terminals • AC power to the controller • Communication-link wiring, if the controller is to communicate with a •...

  • Page 20: Ac Power Wiring

    Do not share 24 Vac between controllers. All wiring must comply with National Electrical Code and local codes. The ac power connections are in the top left corner of the Tracer ZN511 zone controller (see Figure 3). Figure 3. Connecting ac power wires to the controller...

  • Page 21: Communication-Link Wiring And Addressing

    Communication-link wiring and addressing Communication-link wiring and addressing The Tracer ZN511 zone controller communicates with the BAS and with other LonTalk controllers via a LonTalk communication link. For impor- tant instructions on network wiring, refer to the Tracer Summit Hard- ware and Software Installation guide (BMTX-SVN01A-EN).
  • Page 22 Chapter 2 General wiring information CNT-SVX06B-EN...

  • Page 23: Chapter 3 Mounting The Controller

    For fan coil applications, the controller can usually be mounted inside the end pocket of the unit. For heat pump applications, the controller should be mounted on the side of the unit. Trane recommends locating the Tracer ZN511 zone controller: •...

  • Page 24: Mounting Recommendations

    Mounting recommendations are as follows: ▲ IMPORTANT Mount the Tracer ZN511 zone controller with the cover on to avoid the possibility of damaging the circuit board during installation. Mount the controller in any direction, other than with the front of the •...

  • Page 25: Chapter 4 Applications For The Heat Pump Configuration

    ▲ IMPORTANT The Tracer ZN511 zone controller ships from the factory in an unconfig- ured state. Use the PC-based Rover service tool to configure the con- troller. If the controller is part of a BAS, it is recommended that you configure the controller after BAS communication has been estab- lished.

  • Page 26: Binary Inputs For Water-Source Heat Pump Applications

    Binary inputs for water-source heat pump applications The Tracer ZN511 zone controller includes five binary inputs. Each binary input associates an input signal of 0 Vac with open contacts and 24 Vac with closed contacts. Table 3 gives the function of each binary input for water-source heat pump applications.

  • Page 27: Bi2: Condensate Overflow

    If BI2 is wired to a condensate overflow switch and the level of condensate reaches the trip point, the Tracer ZN511 will detect the condition and generate a Condensate Overflow diagnostic.

  • Page 28: Bi4 And Bi5: High/Low Pressure Cutout

    Chapter 4 Applications for the heat pump configuration BI4 and BI5: High/low pressure cutout The function of high- and low-pressure cutout is to protect the refrigerant circuit from abnormal pressure conditions by locking out (disabling) the compressor operation. Binary input 4 (terminals BI4 and V4) is used to lock out the first compressor and binary input 5 (terminals BI5 and V5) is used to lock out the second compressor.
  • Page 29 Binary inputs for water-source heat pump applications To ensure that compressor contactor monitoring is functioning, perform the following test: 1. Using a voltmeter, place the probes across the 24-V side of the com- pressor contactor. When the compressor is in operation, the voltmeter should register a value close to 24 V.

  • Page 30: Compressor Line-Voltage Monitoring

    Chapter 4 Applications for the heat pump configuration Compressor line-voltage monitoring By connecting BI4 and V4 to a field-supplied current-sensing relay, the controller will monitor the operation of the first compressor. Install the current-sensing relay onto the line-voltage wiring going to the compressor (see Figure 6).

  • Page 31: Analog Inputs For Water-Source Heat Pump Applications

    The ZN analog input functions as the local (hardwired) zone temperature input. The controller receives the temperature as a resistance signal from a 10 kΩ thermistor in a standard Trane zone sensor wired to analog input ZN. A communicated zone temperature value can also be used for control- lers operating on a BAS.

  • Page 32: Set: Local Set Point

    SET: Local set point The SET analog input functions as the local (hardwired) temperature set- point input for applications utilizing a Trane zone sensor with a tempera- ture set-point thumbwheel. The ability to enable or disable the local set- point input is available in the Rover service tool. A communicated set- point value can also be used for controllers operating on a BAS.

  • Page 33: Ai2: Discharge Air Temperature

    A two-position outdoor air ventilation damper (optional) • A Tracer ZN511 zone controller has six binary outputs. Each binary out- put is a relay with an output rating of 12 VA. Table 5 describes the func- tion of each output for water-source heat pump applications.

  • Page 34: Generic Binary Output

    Binary output 6 is the only output that can be configured as a generic binary output. When configured as a generic binary output, it can be monitored only by a BAS, and has no direct effect on Tracer ZN511 opera- tion.
  • Page 35 Wiring requirements and options Figure 7. Wiring diagram for heat pump applications, showing required wiring for minimal proper operation Reversing valve Compressor 1 contactor Compressor 2 contactor 24 Vac (R) Neutral (C) LonTalk Leaving water temperature CNT-SVX06B-EN...

  • Page 36: Chapter 4 Applications For The Heat Pump Configuration

    Chapter 4 Applications for the heat pump configuration Figure 8. Wiring diagram for heat pump applications, with all required and optional components connected Occupancy/Generic (open=occupied) Reversing valve Condensate overflow (open=normal) Compressor 1 contactor Compressor 2 contactor Low-temperature detection (open=normal) GND* Damper actuator/Generic Details A &...

  • Page 37: Chapter 5 Sequence Of Operations For The Heat Pump

    Power-up sequence When 24 Vac power is initially applied to the Tracer ZN511 zone control- ler, the following sequence occurs: 1. All outputs are controlled off.

  • Page 38: Random Start

    Zone temperature control The Tracer ZN511 zone controller calculates a required heating or cooling capacity (0–100%) according to the measured zone temperature and the active temperature set point, and sequences the heat pump heating and cooling stages accordingly.

  • Page 39: Unoccupied Mode

    The controller is placed in occupied bypass mode when the controller is operating in the unoccupied mode and either the timed override ON but- ton on the Trane zone sensor is pressed or the controller receives a com- municated occupied bypass signal from a BAS. In occupied bypass mode, the controller maintains the zone temperature based on the occupied heating or cooling set points.

  • Page 40: Timed Override Control

    CANCEL button is pressed on the Trane zone sensor or the occupied bypass time expires.

  • Page 41: Heating Or Cooling Mode

    Fan operation and status The Tracer ZN511, configured for heat pump control, supports single- speed fan applications. The fan can be configured for continuous or cycling operation for both heating and cooling mode operation. When con- figured for continuous operation, the fan normally runs continuously dur- ing the occupied, occupied standby, and occupied bypass modes.

  • Page 42: Outdoor Air Damper Operation

    Reversing valve operation The reversing valve is configurable to energize in either the cooling mode (typical of Trane units) or the heating mode. Be sure to configure the reversing valve operation based on the heat pump manufacturer’s design. An energized valve will remain energized until a mode change (either from cooling to heating or vice versa) is initiated.

  • Page 43: Unit Protection Strategies

    Fan off delay Smart reset The Tracer ZN511 will automatically restart a unit that is locked-out as a result of a High/Low Pressure Cutout (BI4, BI5) diagnostic or a Low Temp Detection Circuit 1 (AI1) or Low Temp Detection Circuit 2 (BI1) diagnostic.

  • Page 44: Fan Off Delay

    Chapter 5 Sequence of operations for the heat pump configuration Fan off delay After heating has been controlled off, the Tracer ZN511 automatically keeps the fan energized for an additional 30 seconds. The purpose of this feature is to remove residual heat from the heating source.

  • Page 45: Configuration

    This chapter provides information about the function of inputs and out- puts and examples of wiring for typical 1 heat/1 cool applications. The types of 1 heat/1 cool applications supported by the Tracer ZN511 zone controller are fan coil units and cabinet heaters as shown in Table 7.

  • Page 46: Binary Inputs For 1 Heat/1 Cool Applications

    Binary inputs for 1 heat/1 cool applications The Tracer ZN511 controller includes five binary inputs, three of which are available for use in 1 heat/1 cool applications. Each binary input asso- ciates an input signal of 0 Vac with open contacts and 24 Vac with closed contacts.

  • Page 47: Bi3: Occupancy Or Generic Binary Input

    BI3 is the only input that can be configured as a generic binary input. When configured as a generic binary input, it can be monitored only by a BAS, and has no direct effect on Tracer ZN511 operation. Analog inputs for 1 heat/1 cool applications The Tracer ZN511 controller includes five analog inputs.

  • Page 48: Zn: Zone Temperature

    The ZN analog input functions as the local (hardwired) zone temperature input. The controller receives the temperature as a resistance signal from a 10 kΩ thermistor in a standard Trane zone sensor wired to analog input ZN. A communicated zone temperature value via the LonTalk communi- cations link can also be used for controllers operating on a BAS.

  • Page 49: Ai1: Entering Water Temperature Sampling

    Analog inputs for 1 heat/1 cool applications AI1: Entering water temperature sampling Note: Neither AI1 nor AI2 is polarity sensitive; you can connect either terminal to either sensor lead. The AI1 analog input functions as the local (hardwired) entering water temperature sampling input for 1 heat/1 cool applications.

  • Page 50: Binary Outputs For 1 Heat/1 Cool Applications

    Binary output 6 is the only output that can be configured as a generic binary output. When configured as a generic binary output, it can be monitored only by a BAS, and has no direct effect on Tracer ZN511 opera- tion.

  • Page 51: Wiring Requirements And Options

    Wiring requirements and options Wiring requirements and options Table 11 shows required controller inputs for minimal proper operation of all 1 heat/1 cool applications. Table 11. Required controller inputs for all 1 heat/1 cool applications For more information, Function Input source see: 24 Vac power Terminals: GND, 24 V...
  • Page 52 Chapter 6 Applications for the 1 heat/1 cool configuration Figure 9. Two-pipe, hydronic-cooling fan coil GND* Fan, high speed GND* Fan, medium speed GND* Fan, low speed Occupancy (open=occupied) GND* Condensate overflow (open=normal) Cooling valve GND* Low-temperature detection (open=normal) Factory-installed Electric heat (optional) jumpers not required for...
  • Page 53 Wiring requirements and options Figure 10. Two-pipe, heating-only fan coil GND* Fan, high speed GND* Fan, medium speed GND* Fan, low speed Occupancy (open=occupied) Condensate overflow (open=normal) GND* Low-temperature detection (open=normal) Factory-installed Heating valve jumpers not GND* required for 24 Vac Damper actuator 1 heat/1 cool LonTalk...
  • Page 54 Chapter 6 Applications for the 1 heat/1 cool configuration Figure 11. Two-pipe fan coil with auto changeover GND* Fan, high speed GND* Fan, medium speed GND* Fan, low speed Occupancy (open=occupied) GND* Condensate overflow (open=normal) Heating/cooling valve Low-temperature detection (open=normal) GND* Factory-installed Electric heat (optional)
  • Page 55 Wiring requirements and options Figure 12. Four-pipe heating/cooling fan coil GND* Fan, high speed GND* Fan, medium speed GND* Fan, low speed Occupancy (open=occupied) GND* Condensate overflow (open=normal) Cooling valve GND* Low-temperature detection (open=normal) Factory-installed Heating valve jumpers not required for GND* 24 Vac 1 heat/1 cool...
  • Page 56 Chapter 6 Applications for the 1 heat/1 cool configuration Figure 13. Four-pipe fan coil with auto changeover GND* Fan, high speed GND* Fan, medium speed GND* Fan, low speed Occupancy (open=occupied) GND* Condensate overflow (open=normal) Heating/cooling valve GND* Low-temperature detection (open=normal) Factory-installed Heating valve jumpers not...
  • Page 57 Wiring requirements and options Figure 14. Fan coil with electric heat GND* Fan, high speed GND* Fan, medium speed GND* Fan, low speed Occupancy (open=occupied) Condensate overflow (open=normal) GND* Low-temperature detection (open=normal) Factory-installed Electric heat (optional) jumpers not required for GND* 1 heat/1 cool Damper actuator...
  • Page 58 Chapter 6 Applications for the 1 heat/1 cool configuration CNT-SVX06B-EN...

  • Page 59: Configuration

    1 heat/1 cool configuration A Tracer ZN511 zone controller configured to control a 1 heat/1 cool unit will operate to maintain the zone temperature set point. This chapter dis- cusses many of the operational sequences used by the controller to accom- plish this goal.

  • Page 60: Random Start

    Zone temperature control The Tracer ZN511 zone controller calculates a required heating or cooling capacity (0–100%) according to the measured zone temperature and the active temperature set point, and sequences the fan coil unit heating and cooling stages accordingly.

  • Page 61: Unoccupied Mode

    The controller is placed in occupied bypass mode when the controller is operating in the unoccupied mode and either the timed override ON but- ton on the Trane zone sensor is pressed or the controller receives a com- municated occupied bypass signal from a BAS. In occupied bypass mode, the controller maintains the zone temperature based on the occupied heating or cooling set points.

  • Page 62: Timed Override Control

    CANCEL button is pressed on the Trane zone sensor or the occupied bypass time expires.

  • Page 63: Heating Or Cooling Mode

    Heating or cooling mode Heating or cooling mode The heating or cooling mode can be determined in one of two ways: By a communicated signal from a BAS or a peer controller • Automatically, as determined by the controller • A communicated heating signal permits the controller to heat only.

  • Page 64: Fan Operation And Status

    Fan operation and status The Tracer ZN511, configured for 1 heat/1 cool operation, supports three fan speeds. Every time the fan is enabled, the fan will begin operation and run for 3 seconds in high speed before changing to any other speed.

  • Page 65: Two-Position Valve Operation

    Two-pipe operation For two-pipe applications, the Tracer ZN511 can be configured as heating only, cooling only, or heat/cool changeover (see Table 12). The main coil can be used as the primary heating source and/or the primary cooling source.

  • Page 66: Electric Heat Operation

    Chapter 7 Sequence of operations for the 1 heat/1 cool configuration Electric heat operation The Tracer ZN511 supports a single stage of electric heat for 2-pipe appli- cations (see Table 12). Electric heat can only be used as the primary heat source, not as a second stage of heating.

  • Page 67: Unit Protection Strategies

    • Smart reset The Tracer ZN511 will automatically restart a unit that is locked-out as a result of a Low Temp Detection Circuit 1 (BI1) diagnostic. Referred to as “smart reset,” this automatic restart will occur 30 minutes after the diag- nostic occurs.
  • Page 68 Chapter 7 Sequence of operations for the 1 heat/1 cool configuration CNT-SVX06B-EN...

  • Page 69: Communication

    The Test button is used to perform the manual output test (see “Manual output test” on page 58), which verifies that the controller is operating properly. It is located as shown in Figure 15. Figure 15. Tracer ZN511 zone controller circuit board Green LED Test button...

  • Page 70: Manual Output Test

    Chapter 8 Status indicators for operation and communication Manual output test The manual output test sequentially turns off and on all binary outputs to verify their operation. The test overrides normal operation of the con- troller, which is suspended while the test is being performed. Use the manual output test to: Verify output wiring and operation •...
  • Page 71 Service button (pin) Table 13. Manual output test sequence for water-source heat pump configurations Step (number of times Test Reversing Comp. 1 Comp. 2 Damper/ Result Fan (BOP1) button is valve (BOP2) (BOP4) (BOP5) Generic (BOP6) pressed in sequence) Begins test mode Closed/Off Closed/Off Fan on...

  • Page 72: Interpreting Leds

    Chapter 8 Status indicators for operation and communication Interpreting LEDs The red LED on the Tracer ZN511 controller (see Figure 15 on page 57) indicates whether the controller is capable of operating normally (see Table 15). Table 15. Red LED: Service indicator...
  • Page 73 Interpreting LEDs The yellow LEDs on the Tracer ZN511 controller (see Figure 15 on page 57) indicate the controller’s communications status (see Table 17). Table 17. Yellow LED: Communications indicator LED activity Explanation LED is off continuously The controller is not detecting any communication (normal for stand- alone applications).

  • Page 74: Diagnostics

    Table 18 on page 62 and Table 19 on page 64 list diagnostics that can occur with the Tracer ZN511 controller. The tables present each diagnos- tic that can be generated, its effect on outputs (consequences), and its type (categorized according to clearing method).
  • Page 75 Diagnostics Table 18. Diagnostics for heat pump configurations (Continued) Diagnostic Diagnostic Probable cause Consequences type High/Low Pressure Cutout Abnormal refrigerant pres- Fan off Smart reset/ Circuits 1 and 2 sures Compressor 1 off Manual Compressor 2 off Damper closed Zone Temp Failure Invalid or missing value for Fan off Automatic...
  • Page 76 Chapter 8 Status indicators for operation and communication Table 19. Diagnostics for 1 heat/1 cool configurations Diagnostic Probable cause Consequences Diagnostic type Maintenance Required Fan run hours exceed the Fan unaffected Informational time set to indicate filter Valves unaffected change Electric heat unaffected Damper unaffected Condensate Overflow...
  • Page 77 Diagnostics Table 19. Diagnostics for 1 heat/1 cool configurations (Continued) Diagnostic Probable cause Consequences Diagnostic type Normal—Power Up On start-up Fan unaffected Automatic Valves unaffected Electric heat unaffected Compressors unaffected Damper unaffected 1 For more information on types of diagnostics and how they are cleared from the controller, see “Clearing diagnos- tics”...

  • Page 78: Clearing Diagnostics

    Chapter 8 Status indicators for operation and communication Clearing diagnostics Diagnostics are categorized according to the type of clearing function each has. The four categories are: Manual (latching) • Automatic (nonlatching) • Smart reset • • Informational Note: Clearing diagnostics refers to deleting diagnostics from the software;...

  • Page 79: Chapter 9 Troubleshooting

    62 and Table 19 on page 64. No power to the con- If the controller does not have power, the unit fan does not operate. For the Tracer ZN511 troller controller to operate normally, it must have an input voltage of 24 Vac. If the green LED is off continuously, the controller does not have sufficient power or has failed.
  • Page 80 Chapter 9 Troubleshooting Table 20. Fan does not energize (Continued) Probable cause Explanation Unit configuration The controller must be properly configured based on the actual installed end devices and application (1 heat/1 cool or water-source heat pump). If the unit configuration does not match the actual end device, the valves may not work correctly.
  • Page 81 Troubleshooting Table 22. Valves remain open Probable cause Explanation Manual output test The controller includes a manual output test sequence you can use to verify output oper- ation and associated output wiring. However, based on the current step in the test sequence, the values may not be open.
  • Page 82 Chapter 9 Troubleshooting Table 24. Outdoor air damper remains closed Probable cause Explanation Unit wiring The wiring between the controller outputs and the outdoor air damper must be present and correct for normal outdoor air damper operation. Refer to applicable wiring diagram. Failed end device Check damper actuator to ensure proper operation.

  • Page 83: Index

    Index ZN (Zone temperature), 36 Analog inputs, heat pump AI1 (Leaving water temperature), 14, AI2 (Discharge air temperature), 21 FAN (Fan mode input), 20 SET (Local set point), 20 Numerics ZN (Zone temperature), 19 Applications, 1 heat/1 cool, 1 heat/1 1 heat/1 cool configuration cool configuration Analog inputs, 35-37...
  • Page 84 Index Heat pump configuration, 15 Heating or cooling mode, 29 Configurations High/low pressure cutout input, 1 heat/1 cool, 1, 33-55 Electric heat failure, Heat pump, 1, 13-32 Leaving water temperature input, troubleshooting, 69 Current-sensing switches, 4, 18 Electric heat operation, 54 Local set-point input, 20 Entering water temperature Low-temperature detection input,...
  • Page 85 Index Heat pump configuration, 20 Troubleshooting, 70 Heating/cooling mode, 29 LonTalk communication Morning cool-down, 28 Outputs, Binary outputs Wiring and addressing Morning warm-up, 28 Overriding binary outputs specifications, 9 Occupancy modes, 26 1 heat/1 cool, 38 Outdoor air damper operation, 30 LonTalk protocol, Product General, 58...
  • Page 86 Index Electric heat failure, 69 Fans, 67 Outdoor air damper, 70 Valves, 68 Two-pipe operation, 53 Two-position valve operation, 53 Agency listing/compliance Unit protection strategies 1 heat/1 cool configuration, 55 Heat pump configuration, 31 Valves Actuators, 5 Troubleshooting, 68 Water and duct temperature sensors, 4 Water-source heat pump, 13 Wiring...
  • Page 87 For more information contact your local Trane Trane has a policy of continuous product and product data improvement and reserves the right to office or e-mail us at comfort@trane.com change design and specifications without notice. Only qualified technicians should perform the installa-...

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