Trane VAV VV550 LonTalk Installation & Operation Manual
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Trane VAV VV550 LonTalk Installation & Operation Manual

Microprocessor-based, direct digital controller (ddc) for the (variable air volume) vav terminal unit
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Installation
Operation
Programming
VAV VV550 LonTalk
Controller
VAV-SVP01A-EN
May 2010

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Summary of Contents for Trane VAV VV550 LonTalk

  • Page 1 Installation Operation Programming VAV VV550 LonTalk Controller VAV-SVP01A-EN May 2010...
  • Page 2 If there is a risk of arc or flash, technicians MUST put on all necessary Personal Protective Equipment (PPE) in accordance with NFPA70E for arc/flash protection PRIOR to servicing the unit. Failure to follow recommendations could result in death or serious injury. © 2010 Trane All rights reserved VAV-SVP01A-EN...
  • Page 3 Warnings, Cautions and Notices WARNING Electrocution and Fire Hazards with Improperly Installed and Grounded Field Wiring! Improperly installed and grounded field wiring poses FIRE & ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes.

  • Page 4: Table Of Contents

    Table of Contents General Information ........... . 6 Chapter Overview .
  • Page 5 ........87 Trane/Honeywell Proportional Valve Check Out Procedures .

  • Page 6: General Information

    General Information Chapter Overview This chapter contains information about the following: • Unit Control Module VAV VV550 Controller • Specifications • VAV VV550 Controller Enhancements • VAV VV550 Controller Features • Shipping & Storage • Data Lists Unit Control Module VAV VV550 Controller The VV550 is a microprocessor-based, Direct Digital Controller (DDC) for the (Variable Air Volume) VAV terminal unit.

  • Page 7: Specifications

    General Information Specifications Power Requirements The UCM VV550 requires 18-32 Vac (24VAC nominal), 50/60 Hz, and up to 50 VA, depending on the number of heat outputs (stages), which consume 10 VA each. Operating Environments - VAV VV550 Controller 32° to 140°F (0° to 60°C), 5% to 90% relative humidity, non-condensing Storage Environments - VAV VV550 Controller -40°...

  • Page 8: Vv550 Enhancements

    VV550 controller allows VAV units to communicate on a Trane Comm5 or LonTalk. This controller works in standalone mode, peer-to-peer with one or more other units, or when connected to a Trane Tracer Summit or a 3rd party building automation system that supports LonTalk.

  • Page 9: Vv550 Features

    The VV550 is a Comm5 controller. As such, the controller is compatible with the latest generation of Trane controls. This allows the VV550 controller to exist on the same communication wire as the rest of our Comm5 controllers and share data with them as required. Additional inputs and outputs can easily be added to the same communication link (Tracer MP503) for any required auxiliary functions.
  • Page 10 The VAV VV550 Controller is designed with LonWorks technology and will be LonMark certified. VV550 controller allows VAV units to communicate on a Trane Comm5 or LonTalk link. This controller works in standalone mode, peer-to-peer with one or more other units, or when connected to a Trane Tracer Summit or a 3rd party building automation system that supports LonTalk.

  • Page 11: Shipping & Storage

    General Information Figure 1. VV550 board layout VAV VV550 controller and VAV 4.2 controller comparisons VAV VV550 VAV 4.2 Supports Comm5 Supports only Comm4 or Comm3 (VariTrac or VariTrane) No local CO2 sensor input. Uses only a communicated value Local CO2 sensor input is available. Single star (*) initiates maximum flow override after pressing the ON Single star (*) initiates cool minimum airflow override.

  • Page 12: Data Lists

    General Information Data Lists If you’re going to connect to a generic building automation system, use Table 1, p. 12 Table 2, p. 13 for your points list. Table 1. Input/output listing Input Description Input SNVT type Output description Output SNVT type Space temperature nviSpaceTemp...
  • Page 13 General Information Table 2. Configuration properties Configuration property description Configuration property SNVT type SCPT reference Send heartbeat nciSndHrtBt SNVT_time_sec SCPTmaxSendTime (49) Occ temperature setpoints nciSetpoints SNVT_temp_setpt SCPTsetPnts (60) Minimum send time nciMinOutTm SNVT_time_sec SCPTminSendTime (52) Receive heartbeat nciRecHrtBt SNVT_time_sec SCPTmaxRcvTime (48) Location label nciLocation SNVT_str_asc...

  • Page 14: Vav Start Up/Check Out Procedure

    VAV Start Up/Check Out Procedure Chapter Overview This chapter contains information about the following: • VV550 Pre-Power Check-Out • Power Wiring Requirements • Light Emitting Diode (LED) Operations • Communication Wiring • Space Temperature Controller Analog Inputs • Zone Sensor Wiring •...

  • Page 15: Vv550 Power Wiring

    VAV Start Up/Check Out Procedure VV550 Power Wiring Power Requirements WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. WARNING Electrocution and Fire Hazards with Improperly Installed and Grounded Field Wiring!

  • Page 16: Light Emitting Diode (Led) Operations

    VAV Start Up/Check Out Procedure Note: VariTrane and VariTrac cooling only Series D and E models consume 20 VA (12 VA for the actuator and 8 VA for the board). The heating output ratings remain the same. Refer to Figure 2, p. 17 Figure 3, p.
  • Page 17 VAV Start Up/Check Out Procedure Figure 2. VV550 single duct control diagram VAV-SVP01A-EN...
  • Page 18 VAV Start Up/Check Out Procedure Figure 3. VV550 fan-powered control diagram VAV-SVP01A-EN...

  • Page 19: Communication Wiring

    • All wiring must comply with the National Electrical Code (NEC) and local codes. • Although Comm5 does not require polarity sensitivity, Trane recommends keeping polarity consistent throughout the site. • Make sure that 24VAC power supplies are consistent in how they are grounded. Avoid sharing 24VAC between Comm5 controllers.

  • Page 20: Wiring Requirements

    VAV Start Up/Check Out Procedure Wiring requirements The recommended Comm5 communication-link wiring is 22 AWG, Level 4, twisted-pair wire. See Table 5, p. 20 "Specifications for Level 4-compliant cables". The wire can be either shielded or unshielded. However, unshielded wire is recommended for most installations. The maximum wire length for Comm5 communication links is 4,500 ft (1,400 m).
  • Page 21 VAV Start Up/Check Out Procedure Figure 4. Daisy chain configuration Termination Resistor Ω Ω Note: Use 105 Ω, 1%, 1/4 W for 22 AWG, Level 4. Comm5 Link Repeater A Comm5 link repeater regenerates the signal on a Comm5 link. The configurations on either side of the repeater should be daisy chain.
  • Page 22 VAV Start Up/Check Out Procedure Figure 5. Alternate daisy chain configuration Ω Termination Ω Termination Resistors Resistors Ω Ω Notes: 1. Maximum wire length for the entire configuration is 4,500 ft (1,400 m). 2. Comm5 wire length limitations can be extended through the use of a link repeater, see “Comm5 physical link repeater.” Figure 6.
  • Page 23 VAV Start Up/Check Out Procedure Yellow Comm LED The yellow Comm5 LED blinks whenever another controller is transmitting. However, the yellow Comm5 LED does not blink when the controller is transmitting data. The yellow Comm5 LED cannot distinguish between messages meant for the controller and messages that the controller ignores. Table 6, p.
  • Page 24 VAV Start Up/Check Out Procedure Zone Sensor Wireless Option (Wireless Zone Sensor). Receiver is used to receive a signal from the wireless zone sensor and can be factory installed- Part Number X13790855010. The wiring harness connects the receiver to the VAV VV550 Controller - Part Number X19051672010. Zone Sensor Wireless Option (Zone Sensor).
  • Page 25 VAV Start Up/Check Out Procedure Auxiliary Duct Temperature Sensor The typical mounting position of the auxiliary sensor is upstream of the VAV unit and connected into the DDC controller at TB3-5 and TB3-6. Comm5 could be mounted downstream of the reheat for improved diagnostics (Figure 8, p.
  • Page 26 VAV Start Up/Check Out Procedure Ventilation Flow control See Auxiliary Duct Temperature Sensor wiring on Space temperature controller Analog Inputs Note: If heat is installed Auxilary sensor will be located at the discharge of the VAV unit. Flow Tracking Control Two controls are used in Flow tracking controller.

  • Page 27: Wireless Zone Sensor

    Wireless Zone Sensor Overview The Trane Wireless Zone Sensor set includes a sensor and a receiver that work together to provide the same functions as the equivalent Trane wired sensor, such as the standard 10 k temperature input (with the exception of the communication jack). No further software or hardware is necessary for site evaluation, installation, or maintenance.
  • Page 28 VAV Start Up/Check Out Procedure Figure 10. Mounting hole dimensions for sensor 3.27 in (8.30 cm) 2.36 in (6.00 cm) 1.34 in (3.41 cm) Note: The dimensions are the same for both the sensor and the receiver. Setting the Address, Mounting, Wiring, and Associating the Receiver and Sensor The following procedure list shows the recommended order for installation: •...
  • Page 29 VAV Start Up/Check Out Procedure Choosing a Location for Mounting the Sensor Placement of the receiver and the sensor set is critical to proper operation. In most installations, distance is not the limiting factor for proper radio signal quality. It is more greatly affected by walls, barriers, and general clutter.
  • Page 30 VAV Start Up/Check Out Procedure Figure 11. Setting the rotary address switches on the receiver and the sensor Do not remove the insulation strip yet. B1 + WIRELESS LESS INSTALL TALL TA A LED4 Pb-FREE LED1 LED1 LED2 LED2 LED3 LED3 SIGNAL SIGNAL...
  • Page 31 VAV Start Up/Check Out Procedure 3. Make a notation of the address and location of the sensor. Factory Wiring of the Receiver to the VAV Unit Controller The required power for the receiver is 24VAC or 24 Vdc and is less than 1 VA. The receiver is designed to be powered by the VAV VV550 Controller.
  • Page 32 VAV Start Up/Check Out Procedure Table 8. Wiring harness: wire identification Wire Label Color Function Space temperature heating setpoint HEATING SET Brown (WDS only) FAN SYSTEM Green Fan and system control (WDS only) Space temperature setpoint (WDS and SETPOINT W2S only) ZONE White Zone temperature...
  • Page 33 VAV Start Up/Check Out Procedure Applying Power to the Receiver Restore power to the VAV VV550 Controller. Observe LED5 on the receiver (Figure 14, p. 33). It will light and stay constantly On when 24 V power is normal. Figure 14. LED5 stays on after applying power to the receiver LED5 stays constantly On Receiver Indicates Readiness to Associate After initial power up, the receiver conducts a channel scan for 10 seconds.
  • Page 34 VAV Start Up/Check Out Procedure Powering the Sensor and Associating the Sensor to the Receiver 1. Verify that the sensor is set to the same address as the receiver it is to be associated with. 2. Remove the insulation barrier, which is a plastic strip located between the two batteries (Figure 16, p.
  • Page 35 VAV Start Up/Check Out Procedure Testing Signal and Battery Strength The following recommended test indicates signal and battery strength. It verifies that the association process was successful and that the batteries have adequate charge. (For more information on LEDs, see "Troubleshooting" chapter.) 1.
  • Page 36 VAV Start Up/Check Out Procedure The building owner or operator may choose to limit tenant access to certain features. This can be done through configuration. Or, if a sensor is configured to match all control capabilities of the building automation system, the locking feature can be used to restrict the tenant from making changes.
  • Page 37 VAV Start Up/Check Out Procedure Figure 20. Center button Center button 3. Configure the sensor options in the order shown in the table. • Press to scroll to the next selection. • Press to move to the next menu. Figure 21. Wireless configuration Setting Configuration options Temperature...
  • Page 38 VAV Start Up/Check Out Procedure Setting Configuration options System (continued) b) Dual setpoint emergency heat/ heat/cool/ emergency heat/ heat/cool/auto/off auto/off heat/cool/off c) No setpoint no system options enabled Note: Fan control not available on VAV units. auto/off auto/off/ auto/off/low auto/high (on) low/high med/high off/high (on)
  • Page 39 VAV Start Up/Check Out Procedure 4. Review the display to ensure that you have selected the correct configuration options. Figure 22. Configuration options The example shows a display that has been configured for: • Dual setpoint • Temperature units (Fahrenheit) •...
  • Page 40 VAV Start Up/Check Out Procedure Optional Features Displaying Setpoint or Temperature You can configure the sensor to display either the temperature (default) or setpoint. To select either option: 1. Verify that the sensor is in operating mode and at the home screen. 2.
  • Page 41 VAV Start Up/Check Out Procedure Note: Fan on VAV units cannot be controlled from the zone sensor. Figure 28. Fan menu Fan menu 3. Press the left and right arrows for 4 seconds. Figure 29. Arrows If you try to access a feature that is locked, the lock symbol will appear on the displays. If you press a keypad button to try and change a locked setting, the locked symbol will flash.

  • Page 42: Vav Vv550 Controller Programming And Operation

    VAV VV550 Controller Programming and Operation Chapter Overview This chapter contains information about the following: • Accessing Rover/Comm5 LonTalk • VV550 Controller Device Home Tabs: At a Glance • Entering and Exiting the Service Mode • Overriding VAVs • Saving VAV Program •...
  • Page 43 VAV VV550 Controller Programming and Operation Figure 31. Connecting to a Comm5 controller using alligator clips Comm5 PCMCIA card Adapter cable RJ11 plug 3. Double-click the Rover icon on the laptop PC desktop. The Rover Service Tool screen will appear. 4.

  • Page 44: Vv550 Controller Device Home Tabs: At A Glance

    VAV VV550 Controller Programming and Operation VV550 Controller Device Home Tabs: At a Glance Unit Information Tab Figure 33. Unit tab Space Temp: The temperature, as reported by the zone sensor. Active Setpoint: The active (or actual) setpoint currently used by the VAV VV550 Controller. Can be either Heating or Cooling depending on operating mode.
  • Page 45 VAV VV550 Controller Programming and Operation airflow tracking offset is negative. If the configured airflow tracking offset is positive, the controller opens the air valve to the configured maximum airflow space.Once a valid differential pressure is established through the local hardwired input and then is no longer present, the controller generates a flow sensor failure diagnostic.

  • Page 46: Outputs Tab

    VAV VV550 Controller Programming and Operation Pressure independent control - When a valid flow value is present, the controller operates under pressure independent control. If after an airflow sensor failure, the airflow returns to the valid range (airflow value greater than 10% of configured nominal airflow), the controller automatically resumes pressure independent control.
  • Page 47 VAV VV550 Controller Programming and Operation Ventilation Tab Figure 35. Ventilation tab Note: For more information on this Ventilation Tab and how the VAV VV550 Controller interfaces with Tracer Summit™, see CNT-SVX17*-EN Ventilation Ratio: The Tracer Summit BAS uses the communicated ventilation ratio limit to tell the controllers how much outdoor air is in the primary air.
  • Page 48 VAV VV550 Controller Programming and Operation Commissioning Tab Figure 36. Commissioning tab Auto-commissioning Test Sequence The controller auto-commissioning test sequence (see Table 9, p. 49) validates both the proper operation of all outputs and the capability to measure all inputs. The purpose of the test sequence is to minimize the labor required to commission the unit in the field.
  • Page 49 VAV VV550 Controller Programming and Operation commissioning test sequence starts. The fields are updated with the results as the sequence progresses. The data is held until the next auto-commissioning test. If an auto-commission command is received in the middle of an auto-commissioning cycle the auto-commissioning sequence restarts.
  • Page 50 Device State/Mode: This point indicates if Rover is communicating with controller. The two states are Configured On line or Not Communicating Manufacturer ID: Trane will be the manufacture displayed for the VV550 controller Software Revision: This is the controller revision programs that has been downloaded into this...

  • Page 51: Entering And Exiting The Service Mode

    VAV VV550 Controller Programming and Operation Entering and Exiting the Service Mode Controllers must be online and in the service mode to receive an override. The service mode disables control from VAV VV550 Controller and places Rover/Comm5 in command of the controller.
  • Page 52 VAV VV550 Controller Programming and Operation Figure 38. Configuration screen (save as) 2. Click the File menu and click Save As. 3. The Save As dialog box will appear. Name unit and click Save. Figure 39. Save As prompt Downloading Program Files from PC to VAV VV550 Controller 1.
  • Page 53 VAV VV550 Controller Programming and Operation Figure 40. Configuration screen (open) 2. Click the File menu and click Open. 3. The Open dialog box will appear. Select the file you wish to open and click the Open button. 4. Download to DDC VAV controller. 5.

  • Page 54: Vav Vv550 Controller Device Home Tabs: Instructions

    VAV VV550 Controller Device Home Tabs: Instructions Chapter Overview This chapter contains information about the following: • Setpoints Tab • Unit Tab • Setup Tab • Inputs Tab • Outputs Tab • Test Tab • Other Tab Configuration To access the data fields for each tab and to make adjustments, select the Configure button. To make adjustments, find the correct parameter, change it, and download to VV550.
  • Page 55 VAV VV550 Controller Device Home Tabs: Instructions Occupied Standby Cooling: Based on the controller occupancy mode, the active space cooling setpoint is the occupied stand by cooling setpoint, The controller can be placed in the occupied standby mode when a communicated occupancy mode request (from a communicated occupancy override, occupancy schedule, or occupancy sensor) is combined with an occupancy request from the local (hardwired) occupancy binary input.
  • Page 56 VAV VV550 Controller Device Home Tabs: Instructions • Heating Setpoint Low Limit These setpoint limits apply only to the occupied and occupied standby, heating and cooling setpoints. They do not apply to the unoccupied heating and cooling setpoints. When the controller is in the unoccupied mode, it always uses the unoccupied heating and cooling setpoints.

  • Page 57: Unit Tab

    VAV VV550 Controller Device Home Tabs: Instructions Unit Tab Figure 43. Unit tab In Rover, the Unit Tab can be changed by selecting the Configure button. Following are descriptions of each line on the Unit tab. Unit Configuration This allows for selection between three operational programs. The three programs are Space Temperature, Ventilation Flow, and Flow Tracking Note: See Operation chapter fore details on operational programs.
  • Page 58 Note: See the Sequence of Operations section of this manual for details on parallel fan operation. Box Setup: Select the proper Setup type. The selectable item is either a "Trane F style" unit manufactured by Trane or "Generic" if the VV550 controller is mounted on some one else's VAV unit.

  • Page 59: Setup Tab

    VAV VV550 Controller Device Home Tabs: Instructions Setup Tab Figure 44. Setup tab In Rover, the Setup Tab can be changed by selecting the Configure button. Following are descriptions of each line on the Setup tab for the Device Setup. VAV setup Nominal Flow: Nominal flow is the total airflow capacity of the VAV box.
  • Page 60 VAV VV550 Controller Device Home Tabs: Instructions Balancing tool to calculate this value and balance the VAV box. Normally, you should not need to change this value here. Note: The flow offset is calculated only for two-point balancing, which requires reading both the maximum and minimum airflows during balancing.

  • Page 61: Inputs Tab

    VAV VV550 Controller Device Home Tabs: Instructions Standby Heating Minimum Airflow: Occupied standby mode is used to reduce the heating and cooling demands during the occupied hours when the space is unoccupied. It can be activated for a classroom currently not in use. Standby Heating Minimum is the minimum amount of airflow desired when in the heat mode during this mode.
  • Page 62 VAV VV550 Controller Device Home Tabs: Instructions In Rover, the Inputs tab can be changed by selecting the Configure button. Following are descriptions of each line on the Inputs tab. For a factory-installed VAV VV550 Controller, all inputs and outputs are configured at the factory. For a field-installed VAV VV551 Controller, use this tab to configure the inputs.

  • Page 63: Outputs Tab

    VAV VV550 Controller Device Home Tabs: Instructions Outputs Tab Figure 46. Outputs tab In Rover, the Outputs Tab can be changed by selecting the Configure button. Following are descriptions of each line on the Outputs tab. For the factory-installed VAV VV550 Controller, all inputs and outputs are configured at the factory.

  • Page 64: Test Tab

    VAV VV550 Controller Device Home Tabs: Instructions Binary Output 5 This output can be configured for: • Parallel or series fan on/off control • Hot-water on/off control • Electric-heat staged or pulse width modulation The output is automatically configured based on your answers in the Output Configuration Wizard. Device Contacts Normally Open: Select this check box if the device contacts are normally open.

  • Page 65: Other Tab

    VAV VV550 Controller Device Home Tabs: Instructions Other Tab Figure 48. Other tab In Rover, the Other Tab can be changed by selecting the Configure button. Following are descriptions of each line on the Other tab. Use this tab to calibrate sensors and set up timers. Calibration Space Temperature Sensor: Use this area to calibrate the space temperature.

  • Page 66: Overrides

    VAV VV550 Controller Device Home Tabs: Instructions Occupied Bypass Timer: Type the amount of time that the controller remains in the occupied bypass mode. If the controller is in the unoccupied mode and an occupant presses the On button at the zone sensor, the controller goes into occupied bypass mode for this amount of time. Power-up Control Wait: Type the number of seconds you want the controller to wait after startup before starting normal operation.

  • Page 67: Sequence Of Operations

    Sequence of Operations Chapter Overview This chapter contains information about the following: • Calibration • Occupancy Modes • Space Temperature Control: Single Duct Units • Space Temperature Control: Fan-Powered Units • Ventilation Flow Control • Flow Tracking Normal Operation The controller is functioning normally when it is operating in one of the three control modes (space temperature control, ventilation control, or flow tracking control) and in one of four occupancy modes (occupied mode, unoccupied mode, occupied standby mode, or occupied bypass mode).

  • Page 68: Occupancy Modes

    Sequence of Operations Occupancy Modes VAV VV550 Controllers have four valid occupancy modes: Occupied, Unoccupied, Occupied standby, and Occupied Bypass. Occupied Mode Occupied mode is the normal (default) operating mode for occupied spaces or daytime operation. When the controller is in the occupied mode, it uses occupied setpoints and runs in: •...

  • Page 69: Space Temperature Control: Single Duct Units

    Sequence of Operations mode by either communicating an occupancy mode request of bypass mode (communicated occupancy override) to the controller or by using the zone sensor timed override ON button. The occupied bypass mode and the occupied mode operate similarly. When the controller is in the unoccupied mode, pressing the zone sensor ON button places the controller in the occupied bypass mode for the duration of the configured occupied bypass time.
  • Page 70 Sequence of Operations capacity increases, the air valve opens above its minimum position. At 100% required heating capacity, the air valve opens to its maximum position. All units have a modulating air valve. The modulating air valve is used to control how much air is flowing through the diffusers and into the space.
  • Page 71 Sequence of Operations stratification may result in uneven air distribution and zone temperature complaints. Table 11, p. 72 for single duct reheat operation and Table 12, p. 72 for fan powered reheat operation. On/Off Electric Reheat One, two, or three stages of staged electric reheat are available on single duct units and two sages of electric heat are available on fan powered units.

  • Page 72: Space Temperature Control: Fan-Powered Units

    Sequence of Operations Table 11. Local heat only with no fan present Configuration Method of control Local Remote Stage 1 Stage 2 Stage 3 PWM electric Not applicable Local PI capacity loop (1 to 3 stages) Each stage represents an equal percentage of total capacity PWM Output (one stage = 100%; two stages = 50% each;...
  • Page 73 Sequence of Operations This Comm5 controller supports an Electronically Commutated Motor (ECM). The controller turns the ECM fan On and Off. It does not change the ECM fan airflow. To assist with flow balancing the fan flow rate is stored as a configuration item. Series Fan The series fan is always controlled as a one-speed ON/OFF fan.

  • Page 74: Ventilation Flow Control

    Sequence of Operations Fan Off Delay There is a 15-second fan OFF delay. When reheat is turned OFF , the controller turns the fan OFF 15 seconds later. Ventilation Flow Control Ventilation flow control (VFC) is one of three supported control algorithms. It is applied to a VAV terminal and used to temper cold outdoor air (OA) that is brought into a building for ventilation purposes.
  • Page 75 Sequence of Operations Staged Reheat Control (Electric and Hot Water) The heat outputs of the controller are binary. Only discrete levels of discharge air temperature are possible. Since discrete discharge air temperature levels do not always provide an instantaneous temperature within the required band, staged reheat controls to a 30-minute average discharge air temperature.

  • Page 76: Flow Tracking

    Sequence of Operations Freeze Protection (Hot Water Only) Units with hot water coils installed are susceptible to freezing. It is important to prevent the water coils from freezing. Freeze protection occurs only when the controller is in the Off state or during the unoccupied period when the primary air valve is closed and the reheat is disabled.
  • Page 77 Sequence of Operations at the configured minimum airflow. The maximum airflow setpoint is limited by the configured maximum airflow. Air Valve Control in Flow Tracking Control Operation The VAV VV550 Controllers support one modulating air valve for heating and cooling operation. Air delivered to the space is controlled with a three-wire floating-point actuator that modulates the air valve.

  • Page 78: Air And Water Balancing

    Air and Water Balancing Chapter Overview This chapter contains information about the following: • Air Balancing • Rover Air and Water Balancing Tool Air Balancing After the unit has been mounted and all electrical and duct connections have been made, the air distribution system should be balanced.

  • Page 79: Rover Air And Water Balancing Tool

    Air and Water Balancing make the required adjustments to pulley sizes, motor sizes and electrical connections to accommodate fan speed changes. If any adjustment have been made, repeat step 2. • If after adjusting the fan to its maximum capacity there is still a shortage of airflow, shut off part of the system to provide enough airflow to balance the other part of the system.
  • Page 80 Air and Water Balancing Figure 51. Balancing tool screen Create New Job Click this option, then click the Create New Job button to create a new job. Open Existing Job Click this option, select a job from the list, then click the Open Job button to open an existing job. Delete Existing Job Click this option, select a job from the list, then click the Delete Job button to delete a job.
  • Page 81 Air and Water Balancing Figure 52. Create new job screen Job tab Use this tab to modify the open job. Note: A "job" contains all the controllers on a single Comm5 link. You can open only one job at a time. If you have more than one Comm5 link at a site, use different job names for each link. Job Name The name of the currently open job.
  • Page 82 Air and Water Balancing Technician Type the name of the technician performing the air and water balancing. Date The default value is the date on which the job was created in the Air and Water Balancing tool. You can change this to a different date. Select Job Units Click Inch-Pound to use cubic feet per minute (cfm) to measure airflow.

  • Page 83: Troubleshooting

    • VAV Parallel Fan Failure Procedures • VAV Electric Heat Stage(s) Failure Procedures • VAV Proportional Hot Water Failure Procedures • Trane/Honeywell Proportional Valve Check Out Procedure • VAV Two Position Hot Water Failure Procedures Diagnosing the Problem Green Status LED will give you an indication if a diagnostic is present. If diagnostic is present, use Rover Service tool or Tracer Summit to access VV550 diagnostics.
  • Page 84 Troubleshooting Diagnostic Log The Diagnostic Log reports diagnostic and informational modes/items that are not in the unit's normal operation. Figure 53. Diagnostic log Some of the items reported are listed to aid in understanding current operation. Reported items are: 1) Timed Override Exists, 2) Cancel Timed Override, 3) Auxiliary Temperature Sensor Not Present, 4) Unoccupied Request from Zone Sensor ** Function, 5) Max Flow Request from Zone Sensor * Function, 6) Calibration in Progress, and 7) Pressure Dependent Operation.
  • Page 85 Troubleshooting Diagnostic Table Table 16, p. 85 shows the VAV VV550/551 Controller diagnostics. Table 16. Controller diagnostics Diagnostic Air valve Reheat Invalid unit configuration 0 VDC 0 VDC 0 VDC Controller failure Closed Discharge air temperature failure (space temperature control) Normal Normal Normal...
  • Page 86 Troubleshooting Resetting Diagnostics A reset clears latching diagnostics and enables the controller to try to run normally. If the latching condition is still present after the reset, the controller shuts down. A reset resets a unit that is running normally. There are five ways to reset unit diagnostics: •...

  • Page 87: Troubleshooting Procedures

    Troubleshooting Table 18. Green status LED activity Green Status LED Activity Description Power On, normal operation One of the following: • Power Off • Controller failure • Test button pressed Blinking for 10 seconds, Wink mode 0.25 seconds Off; 0.25 seconds On One blink continuously, The controller is in the manual output test mode and no 0.25 seconds Off;...
  • Page 88 Troubleshooting VV550 Communication Loss Procedures In the event that the VV550 is not communicating properly (No activity on Communication LED's) inspect the following: WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components.
  • Page 89 Troubleshooting Wired Zone Sensor Failure Procedures WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. When possible, disconnect all electrical power including remote disconnect and discharge all energy storing devices such as capacitors before servicing.
  • Page 90 Troubleshooting Table 19. Zone sensor temperature resistance Temp ( Thermostat Thumbwheel Sensor Resistance (k Ohms) Resistance (Ohms) 17.0 16.5 16.1 15.7 15.4 15.0 14.6 14.3 14.0 13.6 13.3 13.0 12.6 12.3 12.1 11.8 11.5 11.2 11.0 10.7 10.4 10.2 10.0 Note: Thumbwheel resistance checks are made at terminal 2 and 3 on the zone sensor.
  • Page 91 Troubleshooting • Disconnect the zone sensor terminal plug from the VV550 and using an Ohmmeter, measure the resistance across the terminals 2 (common) and 3 (setpoint). Compare the resistance to specified set point on sensor using Table 19, p. 90. The resistance shown should correlate within ±...
  • Page 92 Troubleshooting Table 20. Diagnostics on the sensor LED state when Test button is pressed Error code (WDS (WTS, WZS sensors) sensor display) Indicates… Sensor failure E0, E5, E7 - Replace sensor LED1: Off Disassociated LED2: Off - Sensor is not associated with a receiver LED3 : 1-blink pattern repeated 3 times LED1: Off...
  • Page 93 Troubleshooting Table 23. Signal quality: LED1, LED2, LED3 on the sensor User Action LED Display Indicates… LED1:Off Normal state None LED2:Off * No Test button press LED3:Off LED1:Off Associated; no communication with receiver Press Test LED2:Off * Associated, but no signal from the receiver after Button (SS) pressing Test button LED3:Off...
  • Page 94 Troubleshooting Table 24. Output failure modes of operation Situation Zone Temperature Output Zone Setpoint Output 11.17 kΩ, 72.5 F (22.5 Receiver address = 000 451 Ω, 72.5 F (22.5 C), indefinitely indefinitely Receiver address = 001 to 999 Receiver has powered up, but has not 11.17 kΩ, 72.5 F (22.5 451 Ω, 72.5...
  • Page 95 Troubleshooting Table 26. Signal quality: LED1, LED2, LED3 on the sensor User Action LED Display Indicates… None LED1:Off Normal state LED2:Off * No Test button press LED3:Off LED1:Off Press Test Associated; no communication with receiver Button (SS) LED2:Off * Associated, but no signal from the receiver after pressing Test button LED3:Off LED1:On...
  • Page 96 1. Steps for Calibration • Log on to the VAV VV550 Controller with Rover software. • Turn the central air handler "off." If this is not possible, Trane recommends pulling the transducer tubes off during the calibration process to simulate this.
  • Page 97 • Verify that the actual unit size matches the unit's nameplate. 4. Poor inlet configuration • Trane recommends 1½-duct diameters of straight duct before the inlet of the box (a 12-inch box should have 18 inches of straight run duct before the inlet).
  • Page 98 Troubleshooting Duct Temperature Sensor Failure Procedures In the event that the VV550 reports an incorrect or failed Discharge or Primary air temperature, properly inspect the following: 1. Make sure VAV VV550 has been configured for the input 2. Discharge or Primary air temperature is higher or lower than what the VV550 reads •...
  • Page 99 Troubleshooting • Change the heat and/or cool set points. 3. Actuator not driving full drive time • Drive time in advanced configuration not set at 90 seconds on current Varitrane units • Adjust to correct damper travel time using Rover service tool. See Operation and programming chapter.
  • Page 100 Troubleshooting 3. Tracer Summit has the fan output disabled • Check group, global, and/or Tracer overrides to make sure they are not inhibiting fan operation. 4. A flow override exists locking out the fan output • Check to make sure Tracer or Rover service tool has released fan disable override. 5.
  • Page 101 Troubleshooting • Check group, global, and/or Tracer overrides to make sure they are not inhibiting fan operation. 4. A flow override exists locking out the fan output • Check to make sure Tracer or Rover has released fan disable override. Note: If fan cycling is based on temperature go to step 5 and if it is based on air flow go to step 5.
  • Page 102 Troubleshooting • Check wiring to make sure speed control is wired correctly. See Figure 63, p. 111 Figure 64, p. 112 for wiring schematic. • Check voltage selection switch on side of Variable speed motor control. • Should be set for motor voltage. •...
  • Page 103 Troubleshooting • Measure voltage from green to red wires on 4 pin connector and document. See Figure 59, p. 107 Figure 66, p. 114 for correct unit wiring diagram. • Should measure less than previous reading • Continue process until all selector switch positions have been checked to find any dead spots in selector switches •...
  • Page 104 Troubleshooting • Check power output for correct binary output. Should have 24VAC; if it does not measure the power input to on TB1-1 24VAC input and TB1-2 of the VV550 board. The supply voltage should be between 20 and 28 VAC (24VAC cataloged). However, voltages at either extreme may result in system instability.

  • Page 105: Trane/Honeywell Proportional Valve Check Out Procedures

    VAV VV550 Controller outputs are switched to ground. Do not jumper 24VAC to Binary output Triacs because damage will occur. Trane/Honeywell Proportional Valve Check Out Procedures Two problems can occur with the cartridge/ actuator or both that can result in over conditioning the space.
  • Page 106 Troubleshooting • If VAV VV550 is calling in the status menu and binary output to open the valve and Triac is not energized then check VV550 Triac output; wiring; and Relay output. • Check Binary outputs. See Figure 59, p. 107 Figure 60, p.
  • Page 107 Troubleshooting Figure 59. VV550 single duct control diagram VAV-SVP01A-EN...
  • Page 108 Troubleshooting Figure 60. VV550 fan-powered control diagram VAV-SVP01A-EN...
  • Page 109 Troubleshooting Figure 61. Single duct with single phase voltage electric heat LINE VOLTAGE SINGLE DUCT UNITS - VV550 (SEE NAMEPLATE) HEATER TERMINALS - TYPICAL OF SINGLE PHASE VOLTAGES L1 L2 N - 480 L1 L2 - 208, 240 L1 N - 277, 347 L1 N CONTACTOR 1ST STAGE...
  • Page 110 Troubleshooting Figure 62. Single duct with three phase voltage electric heat VAV-SVP01A-EN...
  • Page 111 Troubleshooting Figure 63. SCR/PSC fan-powered with single phase voltage electric heat FAN-POWERED UNITS - VV550 HEATER TERMINALS - TYPICAL OF SINGLE PHASE VOLTAGES LINE VOLTAGE L1 L2 N - 208, 240, 480 (SEE NAMEPLATE) L1 N - 277, 347 CONTACTOR 1ST STAGE MANUAL CUTOUT...
  • Page 112 Troubleshooting Figure 64. SCR/PSC fan-powered with three phase voltage electric heat VAV-SVP01A-EN...
  • Page 113 Troubleshooting Figure 65. ECM fan-powered with single phase voltage electric heat FAN-POWERED UNITS - VV550 - ECM MOTOR L1 L2 N - 208, 240, 480 LINE VOLTAGE (SEE NAMEPLATE) L1 N - 277, 347 HEATER TERMINALS - TYPICAL OF SINGLE PHASE VOLTAGES L2 N CONTACTOR MANUAL...
  • Page 114 Troubleshooting Figure 66. ECM fan-powered with three phase voltage electric heat VAV-SVP01A-EN...
  • Page 116 Supersedes VAV-SVP01A-EN February 2010 www.trane.com 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.

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