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VAV-SVP01A-EN

67

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).

Note:

For More detail on control modes and units operation see CNT-SVX17*-EN.

Calibration

The calibration sequence enables the controller to calibrate the air valve position and the water
valve position. Calibration takes place if autocalibration is enabled and either a power cycle or a
transition from occupied to unoccupied has occurred.

Note:

Whether or not autocalibration is enabled, the controller initiates calibration on a
communicated application mode command.

The building automation system is responsible for the staggering of the calibration sequence that
is needed between units. When autocalibration is enabled and a transition from occupied to
unoccupied occurs, the calibration sequence starts after a fixed delay of three minutes. The
controller effective occupancy mode is unoccupied, but runs like it is occupied during this three
minute period. The mode field of reported unit status reports calibration when the controller is in
the calibration sequence. If autocalibration is disabled, the air valve and water valve are not driven
closed and the flow sensor zero flow voltage reading is not recorded. Refer to

Table 10, p. 67

for

calibration actions.

Table 10. Calibration actions

I/O Device

Calibration Action Taken

Result After Calibration

Air valve

Drive the air valve closed to the stroke time plus 20 seconds

initialize the air valve position as closed when
the air valve is over-driven

Flow sensor

Record the flow reading when the air valve is fully closed

Subtract the zero flow reading from all
subsequent readings

Modulating hot water reheat

Drive the water valve closed for the stroke time plus 20 seconds

initialize the water valve position as closed when
the water valve is over-driven

Fan

Enabled

Enabled

Electric or On/Off hot water

Disabled

Enabled

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Содержание VAV VV550 LonTalk

Страница 1: ...May 2010 VAV SVP01A EN Installation Operation Programming VAV VV550 LonTalk Controller...

Страница 2: ...al Protective Equipment PPE Required Installing servicing this unit could result in exposure to electrical mechanical and chemical hazards Before installing servicing this unit technicians MUST put on...

Страница 3: ...copy of this document ships inside the control panel of each unit and is customer property It must be retained by the unit s maintenance personnel This booklet describes proper installation operation...

Страница 4: ...D Operations 16 Communication Wiring 19 Wireless Zone Sensor 27 VAV VV550 Controller Programming and Operation 42 Chapter Overview 42 Accessing Rover Comm5 LonTalk 42 VV550 Controller Device Home Tabs...

Страница 5: ...ered Units 72 Ventilation Flow Control 74 Flow Tracking 76 Air and Water Balancing 78 Chapter Overview 78 Air Balancing 78 Rover Air and Water Balancing Tool 79 Troubleshooting 83 Chapter Overview 83...

Страница 6: ...ndependent of the duct pressure The damper modulates between operator set points depending on space conditions Additionally fan and heat outputs may be energized depending on the application The VAV V...

Страница 7: ...Outputs Air valve close maximum output rating 12 VA Air valve open maximum output rating 12 VA Heat stage 1 maximum output rating 12 VA Heat stage 2 maximum output rating 12 VA Heat stage 3 Fan on of...

Страница 8: ...e With a discharge air temperature sensor this feature exercises the air valve fan and heat in the box and records the temperature before and after the action This allows the installer to more easily...

Страница 9: ...UPCM was much less cost effective Drive Min and Max from Zone Sensor When applied with a Trane zone sensor module that includes a thumbwheel setpoint the VV550 controller can easily be overridden to m...

Страница 10: ...uced ventilation CO2 sensor for demand controlled ventilation Note CO2 sensor input not available on VV550 Temperature Statistics As a part of the standard application VAS calculates the minimum space...

Страница 11: ...V550 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 comm...

Страница 12: ...tpoint SNVT_temp_p Heat cool mode input nviHeatCool SNVT_hvac_mode Discharge air temperature nvoDischAirTemp SNVT_temp_p Fan speed command nviFanSpeedCmd SNVT_switch Terminal load nvoTerminalLoad SNVT...

Страница 13: ...2 limit nciSpaceCO2Lim SNVT_ppm SCPTlimitCO2 42 Nominal air flow nciNomFlow SNVT_flow SCPTnomAirFlow 57 Air flow measurement gain nciFlowGain SNVT_multiplier SCPTsensConstVAV 67 Minimum air flow nciMi...

Страница 14: ...al safety precautions when exposed to live electrical components could result in death or serious injury Check the supply voltage at TB1 Proper polarity must be maintained TB1 1 is the hot side and TB...

Страница 15: ...AC is required to power the VAV VV550 Controller and has an acceptable voltage tolerance of 18 to 32 VAC Refer to Figure 2 p 17 and Figure 3 p 18 for the VAV VV550 Controller terminal locations Replac...

Страница 16: ...4 p 16 shows and describes the green status LED activity Table 4 Green status LED activity Green status LED activity Description On Power On normal operation Off One of the following Power Off Contro...

Страница 17: ...VAV SVP01A EN 17 VAV Start Up Check Out Procedure Figure 2 VV550 single duct control diagram...

Страница 18: ...18 VAV SVP01A EN VAV Start Up Check Out Procedure Figure 3 VV550 fan powered control diagram...

Страница 19: ...ors on all links 105 at each end for Level 4 wire Use daisy chain topology Limit zone sensor communication stubs to 8 per link 50 ft each maximum Use one repeater for an additional 4 500 ft 60 devices...

Страница 20: ...C dc resistance unbalance maximum 5 Mutual capacitance of a pair maximum 17 pF foot Pair to ground unbalance maximum 1 000 pF foot 1 000 ft Characteristic impedence 772 kHz 102 15 1 0 MHz 100 15 4 0...

Страница 21: ...mm5 link Link repeater connections The recommended shield connections are shown in Figure 6 p 22 Use these connections for instances where shielded communication wire is used For an example of using a...

Страница 22: ...ntire 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 5 Alternate daisy chain configuration...

Страница 23: ...the zone sensor The zone sensor options are Zone sensor only 2 wires Part Number X13511528010 Sensor with night set back Part Number X13511530010 Zone sensor with external adjustable Part Number X135...

Страница 24: ...surfaces behind the sensor such as outside walls Air flows from adjacent zones or other units Wiring Each unit must be controlled by a zone sensor that is designated specifically for use with the VAV...

Страница 25: ...ts and 24VAC with closed contacts It is activated by a dry contact switch closure Must be 14 to 18 AWG Refer to Figure 2 p 17 and Figure 3 p 18 and the sensor instructions for terminal connections Occ...

Страница 26: ...stalled Auxilary sensor will be located at the discharge of the VAV unit Flow Tracking Control Two controls are used in Flow tracking controller One is configured with the Space temperature control pr...

Страница 27: ...emperature setpoint functions timed override Occupied On and timed override Unoccupied Cancel information to the receiver The receiver electrically reproduces the zone temperature resistance all zone...

Страница 28: ...the Sensor Setting the Rotary Address Switches on the Receiver and on the Sensor Replacing and Securing the Receiver Cover Powering the Sensor and Associating the Sensor to the Receiver Applying Powe...

Страница 29: ...s of direct sunlight Avoid areas in the direct air stream of air diffusers Avoid exterior walls and other walls that have a temperature differential between their two sides Avoid areas close to source...

Страница 30: ...sed for the receiver it is to be associated with 2 Make a notation of the address and location where this sensor is to be mounted Note Do not use 000 as an address for installation If you set the addr...

Страница 31: ...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 See Figure 12 p...

Страница 32: ...rity screw into the bottom of the receiver Figure 13 p 32 Table 8 Wiring harness wire identification Wire Label Color Function HEATING SET Brown Space temperature heating setpoint WDS only FAN SYSTEM...

Страница 33: ...on which to operate LED1 LED2 and LED3 flash rapidly in succession round robin style while the channel scan is in progress Note Do not attempt association until the channel scan is finished After the...

Страница 34: ...association attempt is unsuccessful the sensor will automatically reattempt association with the receiver every 10 minutes Note A disassociated sensor will transmit an association request every 10 mi...

Страница 35: ...r removes all stored association information conducts a channel scan and restarts itself if any of the following are true The receiver address is changed from its current setting 001 999 The receiver...

Страница 36: ...nant from making changes Configuration Procedure To configure settings on the model WDS sensor follow this procedure in the order presented 1 Press the configuration button for 3 seconds The display w...

Страница 37: ...1 Wireless configuration Setting Configuration options Temperature Choose Fahrenheit or Celsius Choose the degree resolution whole degrees half degrees or tenths of degrees Setpoint Deadband available...

Страница 38: ...not available on VAV units Occupancy timed override Setting Configuration options emergency heat heat cool off heat cool auto off emergency heat heat cool auto off no system options enabled auto off...

Страница 39: ...t the bottom of the display between the occupancy symbols as shown in below SeeTable 20 p 92 for error code definitions Figure 22 Configuration options The example shows a display that has been config...

Страница 40: ...n lock or unlock the setpoint system or fan setting to prevent changes To lock or unlock the settings 1 Verify that the sensor is in operating mode and at the home screen 2 Choose a setting to lock or...

Страница 41: ...om the zone sensor 3 Press the left and right arrows for 4 seconds 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 cha...

Страница 42: ...or Instructions on how to use Rover Comm5 refer to the Rover Comm5 online Help by clicking Contents and Index on the Help menu Laptop Requirements and Complete Connection Instructions For instructions...

Страница 43: ...s means that you can configure setpoints and other controller parameters but cannot create bindings or set up peer to peer Comm5 networks All other Rover Comm5 features are available 5 Rover Comm5 wil...

Страница 44: ...in configuration as either Primary Air or Discharge air temperature depending on unit control strategies See Configuration section for more details Airflow Measured in CFM When a valid flow value is p...

Страница 45: ...ll be located in troubleshooting section of this manual Use the Reset Diagnostic button to reset the diagnostic from this point A reset clears latching diagnostics and enables the controller to try to...

Страница 46: ...ly resumes pressure independent control Initiate Calibration button The calibration sequence enables the controller to calibrate the air valve position and the water valve position Unit Description De...

Страница 47: ...io limit is not sufficient the controller can raise its minimum airflow setpoint as long as the space temperature remains under control Effective Ventilation Setpoint The Tracer Summit BAS uses the ef...

Страница 48: ...sting of the fan and the reheat The fan and the reheat are not tested if the discharge air temperature sensor is not present The fan is not tested if there is no fan Local reheat is tested if it is pr...

Страница 49: ...Record the auxiliary temperature at the configured maximum airflow 2 Close the primary air valve 3 Turn on the fan if present 4 Monitor auxiliary temperature for 3 minutes or until it changes by 10 F...

Страница 50: ...ce 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...

Страница 51: ...g Wait for 15 minutes Rover Comm5 does not need to be online with the controller For each controller in the service mode click the Exit Service Mode button Overriding VAVs When you override a controll...

Страница 52: ...e menu and click Save As 3 The Save As dialog box will appear Name unit and click Save Downloading Program Files from PC to VAV VV550 Controller 1 Select the Configure button and the Configuration scr...

Страница 53: ...on 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 Program is now in controller Fig...

Страница 54: ...ke adjustments find the correct parameter change it and download to VV550 Setpoints Tab In Rover the setpoints can be changed by selecting the Configure button Following are descriptions of each line...

Страница 55: ...de the active space heating setpoint is the occupied stand by heating setpoint The controller can be placed in the occupied standby mode when a communicated occupancy mode request from a communicated...

Страница 56: ...ally generated overrides maximum flow or minimum flow are not possible Enable Thumbwheel Star and Double Star Function Single star and double star airflow override capability can be disabled through c...

Страница 57: ...switches to the desired mode based on the primary air temperature Note It can also be done with a communicated request Primary Air Setup Auto Changeover Setpoint The auto change over set point allows...

Страница 58: ...Control This entry will determine if a parallel fan will be controlled based on zone temperature or on flow conditions The entry field on this line will disappear if the unit does not have a parallel...

Страница 59: ...to calculate this value and balance the VAV box Normally you should not need to change this value here Tracking Offset This field is available only if the controller is using flow tracking control Ty...

Страница 60: ...the unoccupied mode this setpoint is the active setpoint for ventilation Space CO2 Setup CO2 sensor communicated value only Low Limit The controller adjusts the ventilation setpoint only when the CO2...

Страница 61: ...rooftop unit with staged heat that needs a Max constant volume of air movement to keep the heat exchanger from overheating and tripping the heat in the rooftop unit tripping on a high limit safety Lo...

Страница 62: ...is connected to a zone sensor This input can be used only to read the local space temperature setpoint from the zone sensor Analog Input 3 This area displays Airflow Sensor when the analog input is co...

Страница 63: ...utput 2 to modulate the air valve Binary Output 2 Binary output 1 is used to drive the air valve open It works in conjunction with binary output 1 to modulate the air valve Output Configuration Wizard...

Страница 64: ...answers in the Output Configuration Wizard Device Contacts Normally Open Select this check box if the device contacts are normally open This check box is available only for hot water on off control Te...

Страница 65: ...t value In the Offset field type a negative or positive number to add to the hardwired setpoint After calibration the effective value should match the value indicated on the zone sensor thumbwheel Str...

Страница 66: ...er will calibrate during power up control wait Overrides To access the data fields for each tab and to make adjustments select the Overrides button In the Override list select the valve or fan you wan...

Страница 67: ...ible for the staggering of the calibration sequence that is needed between units When autocalibration is enabled and a transition from occupied to unoccupied occurs the calibration sequence starts aft...

Страница 68: ...e is unoccupied It can be activated for a classroom currently not in use The controller can be placed in the occupied standby mode when a communicated occupancy mode request from a communicated occupa...

Страница 69: ...control positions the modulating air valve to deliver the desired airflow cooling or heating capacity Cooling Operation Under space temperature control during the coolingmode communicated heat coolmod...

Страница 70: ...le For local reheat only the fan if present is not being overridden to Off communicated fan speed command The primary air temperature is less than the configured reheat enable setpoint 5 F 2 78 C Loca...

Страница 71: ...Hydronic heat is enabled if there is no valid primary air temperature Hydronic heat is disabled if the primary air temperature is greater than the configured reheat enable setpoint ON Off Hot Water He...

Страница 72: ...apacity Valve drive Incrementally open closed Total capacity limited by communicated auxiliary heat enable Not applicable Note Abbreviations Zt Zone temperature HSP Heating setpoint Table 12 Local hea...

Страница 73: ...or occupied standby mode Cycles ON with a call for heat during unoccupied mode When the primary air temperature is warm or hot the parallel fan is OFF unless the local reheat is ON Two methods of cont...

Страница 74: ...within 5 F 2 78 C of the discharge air temperature setpoint when the inlet temperature is within the control range Air Valve Control Ventilation flow control uses the air valve as a constant volume de...

Страница 75: ...trol Units equipped with hot water coils should be sized so the maximum temperature of air leaving the coil does not exceed 140 F 60 C F Since only one stage of hot water reheat is available staged ho...

Страница 76: ...rol algorithms Two VAV VV550 Controllers work together to provide flow tracking control See Figure 50 p 77 The space temperature controller outputs the airflow reported airflow The space temperature c...

Страница 77: ...working together space temperature controller and flow tracking controller The space temperature controller outputs the airflow as reported airflow The airflow is determined by the airflow setpoint i...

Страница 78: ...t diameter long run of straight ducting into the VAV units inlet System Setup Set the outside air dampers to their minimum position Start the supply and return air fan s Before balancing the system en...

Страница 79: ...e overridden to Drive MAX in the Override menu in Rover However this will be more time consuming Rover Air and Water Balancing Tool The Rover Air and Water Balancing tool assists with air and water ba...

Страница 80: ...his option select a job from the list then click the Delete Job button to delete a job Select Job to Open Shows a list of existing jobs Use this list to select an existing job to open or delete Create...

Страница 81: ...ent job names for each link Job Name The name of the currently open job You cannot change this name on the Job tab Address 1 and 2 Type the street address of the job City Type the name of the city whe...

Страница 82: ...ancing tool they do not affect the units used in the controller or in Rover Comm5 Change Airflow Units button This button appears only if you select to use SI units Click this button to select one of...

Страница 83: ...edures Wired Zone Sensor Failure Procedures Wired Zone Setpoint Failure Procedures Wireless Zone Sensor Failure Procedures Airflow Failure Procedures Duct Temperature Sensor Failure Procedures VAV Dam...

Страница 84: ...s 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...

Страница 85: ...int Unoccupied closed Series fan enabled parallel fan Off Off Space temperature fail ventilation flow control c Normal Don t care Normal Space temperature fail flow tracking control c Normal Don t car...

Страница 86: ...tore the unit to normal operation Refer the Rover product literature for more information The Service push button can be used as one of several methods to install the controller in a communication net...

Страница 87: ...power Check device using Rover service tool to see if the VAV VV550 is operating properly If VV550 does operate properly check inputs outputs for a short 3 For final step check program by downloading...

Страница 88: ...sult in system instability If no voltage check up stream of controller to see were voltage has been interrupted See complete wiring diagrams Figure 59 p 107 to Figure 66 p 114 2 Communication link sig...

Страница 89: ...Startup Check out Procedure chapter for the wiring specifications for VV550 3 Defective zone sensor Disconnect the zone sensor terminal plug from the VV550 and using an Ohmmeter measure the resistance...

Страница 90: ...l of the recommended safety warnings provided could result in death or serious injury In the event that the VV550 reports an incorrect zone setpoint properly inspect the following 1 Zone sensor setpoi...

Страница 91: ...3 replace VV550 4 Zone sensor setpoint is shorted out Check the resistance across the wires Disconnect wires from VV550 and zone sensor making sure the ends are not touching each other and measure re...

Страница 92: ...or 1 4s Off for 1 4s with 2s OPff between repetitions Table 21 Diagnostics on the receiver LED state Indicates LED1 Off LED2 Off LED3 1 blink pattern repeated continuously a Disassociated Receiver is...

Страница 93: ...ction LED Display Indicates None LED1 Off LED2 Off LED3 Off Normal state No Test button press Press Test Button SS LED1 Off LED2 Off LED3 Off Associated no communication with receiver Associated but n...

Страница 94: ...gnal quality The LEDs can be observed on both the sensor Table 26 p 95 and the receiver Table 27 p 95 Table 24 Output failure modes of operation Situation Zone Temperature Output Zone Setpoint Output...

Страница 95: ...LED3 Off Associated no communication with receiver Associated but no signal from the receiver after pressing Test button LED1 On LED2 On LED3 On Displays for 5 seconds then constantly off Excellence...

Страница 96: ...e VAV board will automatically cause the unit to calibrate however following the procedure outlined below will provide a more accurate calibration It is only necessary to perform this procedure in ins...

Страница 97: ...oged If no voltage indicated replace the VAV VV550 Controller Remove the high and low tubes from the transducer to simulate no flow Read the transducer output voltage on P1 of the VAV VV550 Controller...

Страница 98: ...check incoming power to the VV550 board on TB1 1 24VAC input and TB1 2 Voltage should measure 24VAC 10 If you measure the proper voltage at TB1 1 24VAC input and TB1 2 and no voltage at TB3 5 and TB3...

Страница 99: ...24VAC directly to common blue and jumper closed red wire to a ground to drive damper closed Damper should drive closed Note VV550 Outputs are switched to ground Do not jumper 24VAC to J1 3 of J1 4 bec...

Страница 100: ...ecause damage will occur 6 After all checks have been completed check motor fan winding integrity and bearing failure VAV Parallel Fan Failure Procedures WARNING Hazardous Service Procedures The maint...

Страница 101: ...it is not then check the VAV VV550 Controller Triac output wiring and Relay output Check J8 to common TB1 2 Should have 24VAC if it does not measure the power input to on TB1 1 24VAC input and TB1 2 o...

Страница 102: ...n exposed to live electrical components could result in death or serious injury If ECM is not controlling Fan Motor properly inspect the following Note The ECM controller has 4 wire pin connector that...

Страница 103: ...trical components perform these tasks Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury In the event that the heat...

Страница 104: ...ual who has been properly trained in handling live electrical components perform these tasks Failure to follow all electrical safety precautions when exposed to live electrical components could result...

Страница 105: ...valve or if tapped with a tool while still on the valve Note Actuator indicator on the side of the actuator should be positioned at the top of the actuator when valve is closed VAV Two Position Hot Wa...

Страница 106: ...power input to 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 Not...

Страница 107: ...VAV SVP01A EN 107 Troubleshooting Figure 59 VV550 single duct control diagram...

Страница 108: ...108 VAV SVP01A EN Troubleshooting Figure 60 VV550 fan powered control diagram...

Страница 109: ...DAMPER PRESSURE 24V HEATER TERMINAL BOX OPTIONAL TRANSFORMER 208 240 480 FUSE OPTIONAL SEE NAMEPLATE LINE VOLTAGE V O AIR FLOW SWITCH BL Y OPTIONAL THERMAL BR CUTOUT R Y BL Y AUTO RESET CUTOUT MANUAL...

Страница 110: ...110 VAV SVP01A EN Troubleshooting Figure 62 Single duct with three phase voltage electric heat...

Страница 111: ...R BK DISCONNECT OPTIONAL FUSE BK R 1 2 3 4 SWITCH RELAY MOTOR BK BK BR BK W W CONTROL BOX VV550 BL 24V Y BR W MOTOR W W L1 L2 N 208 240 480 L1 N 277 347 OPTIONAL DISCONNECT SWITCH HEATER TERMINAL BOX...

Страница 112: ...112 VAV SVP01A EN Troubleshooting Figure 64 SCR PSC fan powered with three phase voltage electric heat...

Страница 113: ...LD INSTALLED DIGITAL DISPLAY ZONE SENSOR W COMM JACK 11 10 7 6 TB1 2 TB1 1 TB2 6 3 2 1 TB3 1 TB3 3 TB3 2 CONTACTORS HEAT 1 277 347 240 STAGES 1 CLOSE BOARD ECM TRANSDUCER TB3_1 TB3_2 TB3_3 TB3_5 TB3_6...

Страница 114: ...114 VAV SVP01A EN Troubleshooting Figure 66 ECM fan powered with three phase voltage electric heat...

Страница 115: ......

Страница 116: ...r e mail us at comfort trane com Literature Order Number VAV SVP01A EN Date May 2010 Supersedes VAV SVP01A EN February 2010 Trane has a policy of continuous product and product data improvement and re...

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