UV-SVN02_-EN.book Page 1 Thursday, January 24, 2013 4:48 PM Installation, Operation, and Maintenance Horizontal Unit Ventilator Classroom Unit Ventilator—Model HUV Models HUVC “C” and later Design Sequence 750 cfm—2000 cfm SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
UV-SVN02_-EN.book Page 2 Thursday, January 24, 2013 4:48 PM Warnings, Cautions, and Notices Warnings, Cautions, and Notices. Note that warnings, cautions, and notices appear at appropriate intervals throughout this manual. Warnings are provide to alert installing contractors to potential hazards that could result in personal injury or death.
UV-SVN02_-EN.book Page 3 Thursday, January 24, 2013 4:48 PM Warnings, Cautions, and Notices WARNING R-410A Refrigerant under Higher Pressure than R-22! Some of the units described in this manual uses R-410A refrigerant which operates at higher pressures than R-22 refrigerant. Use ONLY R-410A rated service equipment or components with this unit. For specific handling concerns with R-410A, please contact your local Trane representative.
UV-SVN02_-EN.book Page 4 Thursday, January 24, 2013 4:48 PM Table of Contents Model Number Descriptions . . . . . . . . . . . . . . 6 General Information . . . . . . . . . . . . . . . . . . . . . 8 Unit Description . . . . . . . . . . . . . . . . . . . . . 8 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Unit Ventilator Controls . . . . . . . . . . . . . . 10 Observing the Receiver for Readiness to Associate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UV-SVN02_-EN.book Page 5 Thursday, January 24, 2013 4:48 PM General Instructions . . . . . . . . . . . . . . . . . 66 Removal of the Drain Pan . . . . . . . . . . . . .85 BACnet MS/TP Link . . . . . . . . . . . . . . . . . 66 Removal of the Fanboard and Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86 Power Supply . . . . . . . . . . . . . . . . . . . . . . 67 Pre-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Pre-Start-up Checklist . . . .
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UV-SVN02_-EN.book Page 8 Thursday, January 24, 2013 4:48 PM General Information Unit Description Configuration. This classroom unit ventilator is configured in a horizontal (ceiling mount) configuration. The units range from 750 cfm to 2000 cfm for the horizontal configuration. Cabinet. The units are constructed of 14- and 16-gauge zinc coated steel. All steel surfaces are cleaned, phosphatized, rinsed and dried before application of final finish paint.
UV-SVN02_-EN.book Page 9 Thursday, January 24, 2013 4:48 PM General Information Face and Bypass (Option). The face and bypass option consist of an actuator, damper blade and 2-position water valve (option). The actuator on the valve is a 24V, 3-point floating type. See Table 3, p. 9 for more technical data. Table 3. Technical data for modulating water valves During bypass mode, the damper moves to prevent air from traveling through the coil.
UV-SVN02_-EN.book Page 10 Thursday, January 24, 2013 4:48 PM General Information Table 4. Technical data for isolation water valves Unit Ventilator Controls Options Field-Installed Controls (Option). The unit comes equipped with a fan speed switch, damper blade (only), and an optional low temperature detection. Customer Supplied Terminal Interface (CSTI) (Option).
UV-SVN02_-EN.book Page 11 Thursday, January 24, 2013 4:48 PM General Information Programming: Tracer UC400 Programmable Controller), or the most recent version. Figure 2. Tracer UC400 unit controller When Trane controls are ordered for an installation, the controls are shipped already installed and factory-tested to ensure proper operation at start-up.
UV-SVN02_-EN.book Page 12 Thursday, January 24, 2013 4:48 PM ECM Application Notes The new Trane BLDC system has some notable differences to traditional designs. perform the function of a two 3-pole contactors. Figure 3. Sample arrangement: electric heat relay RPM Mode The motors are programmed from the factory to run in rpm mode and will not change rpm based on external static pressure, except at the performance limits of the motor/controller.
UV-SVN02_-EN.book Page 13 Thursday, January 24, 2013 4:48 PM Dimensions and Weights Unit Location and Clearances Locate the unit in an indoor area. The ambient temperature surrounding the unit must not be less than 45°F. Do not locate the unit in areas subject to freezing. NOTICE: Equipment Damage! Do not locate the unit in areas subject to freezing. Pipes could burst at lower temperature resulting in equipment damage. Attention should be given to service clearance and technician safety.
UV-SVN02_-EN.book Page 14 Thursday, January 24, 2013 4:48 PM Dimensions and Weights Horizontal unit ventilator with ducted front discharge dimensional data; sizes 075–150 (dimensions in inches) 16 5/8" 7 1/8" 7 7/8" 4" 10 1/8" 1 3/4" R.A. LOWER BACK 4" 10 1/2" F.A. UPPER BACK 14 1/2" 7/8"-DIA K.O. FOR ELECTRICAL 3" 2"-DIA K.O. FOR PIPING 6 1/2" Figure 4.
UV-SVN02_-EN.book Page 15 Thursday, January 24, 2013 4:48 PM Dimensions and Weights Horizontal unit ventilator with ducted front discharge dimensional data; size 200 (dimensions in inches) 17 5/8" 6 1/8" 9 7/8" 5" 10 1/8" 2 3/4" R.A. LOWER BACK 5" 11 1/2" F.A. UPPER BACK 15 1/2" 7/8"-DIA K.O. FOR ELECTRICAL 4" 2"-DIA K.O. FOR PIPING 7 1/2" Figure 5.
UV-SVN02_-EN.book Page 16 Thursday, January 24, 2013 4:48 PM Dimensions and Weights Horizontal unit ventilator with double deflection discharge dimensional data; sizes 075–150 (dimensions in inches) 7/8"-DIA K.O. FOR ELECTRICAL 3" 2"-DIA K.O. FOR PIPING 6 1/2" Figure 6. 3/4" 16 5/8" 10 1/8" R.A.
UV-SVN02_-EN.book Page 17 Thursday, January 24, 2013 4:48 PM Dimensions and Weights Horizontal unit ventilator with double deflection discharge dimensional data; size 200 (dimensions in inches) 7/8"-DIA K.O. FOR ELECTRICAL 4" 2"-DIA K.O. FOR PIPING 7 1/2" Figure 7. 3/4" 17 5/8" 10 1/8" R.A.
UV-SVN02_-EN.book Page 18 Thursday, January 24, 2013 4:48 PM Dimensions and Weights Figure 8.
UV-SVN02_-EN.book Page 19 Thursday, January 24, 2013 4:48 PM Receiving and Handling The unit ventilator is packaged in clear stretch wrap and protective cardboard. Note: Before unwrapping, make a visual inspection of the unit for any damage that may have occurred during shipping. All orders are shipped FOB (Freight on Board) from the factory, therefore any claims must be made with the delivering carrier. Figure 9.
UV-SVN02_-EN.book Page 20 Thursday, January 24, 2013 4:48 PM Pre-Installation Jobsite Inspection Always perform the following checks before accepting a unit: 1. Verify that the nameplate data matches the data on the sales order and bill of lading (including electrical data). 2. Verify that the power supply complies with the unit nameplate specifications. 3. Visually inspect the exterior of the unit, for signs of shipping damage.
UV-SVN02_-EN.book Page 21 Thursday, January 24, 2013 4:48 PM Installation—Mechanical Location Considerations Selecting the appropriate location for installing a unit is very important. The following factors should be considered: 1. Ceiling hung design must be of sufficient structure to support the weight of the unit (see Table 8 for weight data). Figure 5, p. 13 through Figure 9, p. 17 show hanging rod location and placement. Note: Isolator and suspension rods are to be provided by the installer.
UV-SVN02_-EN.book Page 22 Thursday, January 24, 2013 4:48 PM Installation—Mechanical Figure 11. Recess flange installation around horizontal unit ventilator access panel and inlet Supply Air Grille Recessing Flange Figure 13. Horizontal unit ventilator with front panel removed Discharge Panel End Cover Return Air Inlet Grille Access Panel Figure 12. Recess flange installation around bottom and front of horizontal unit Supply Air Grille Recessing Flange Intake Panel Bottom Front Panel 9.
UV-SVN02_-EN.book Page 23 Thursday, January 24, 2013 4:48 PM Installation—Piping Note: Before installation of piping package, the shipping bracket holding the piping in place, must be removed. Proper installation of piping is necessary to provide efficient coil operation and to prevent damage during operation. Follow standard piping practices and include all accessories as necessary. Piping connection knockouts are shown in Figure 5, p. 13 through Figure 9, p. 17.
UV-SVN02_-EN.book Page 24 Thursday, January 24, 2013 4:48 PM Installation—Piping Install the refrigerant suction and liquid lines as described in the condensing unit installation instructions. The thermal expansion valve (TXV) is factory-installed on the Unit Ventilator. Note: The R-410A direct expansion (DX) refrigerant coil includes a factory-mounted adjustable thermal expansion valve (TXV) set to 90 psig superheat and an equalizing tube. Piping should be run straight out through the back of the unit.
UV-SVN02_-EN.book Page 25 Thursday, January 24, 2013 4:48 PM Installation—Piping Figure 17. Steam piping: two-way valve (top) and threeway valve (bottom) Figure 18. Cartridge removal tool Two-way valve Closed B A Open B A Use the following steps to complete cartridge assembly removal: Three-way valve 1. Remove valve actuator. 2. Remove the cartridge assembly from the valve body with the enclosed tool. AB<->B 3. Solder the valve in accordance with normal soldering practices. B 4.
UV-SVN02_-EN.book Page 26 Thursday, January 24, 2013 4:48 PM Installation—Piping Figure 19. Proper plumbing technique for modulating valves Figure 20. Proper mounting for isolation valves Servicing/Removal of Valves Manual Opener The manual opener can be manipulated only when in the up position. The A port can be manually opened by firmly pushing the white manual lever down to the midway position and pushing the lever in. In this position, both A and B ports are open.
UV-SVN02_-EN.book Page 27 Thursday, January 24, 2013 4:48 PM Installation—Piping Figure 22. Installing isolation valve actuator Heating Coils with Direct Expansion Cooling Heating options for direct expansion cooling in the unit ventilator are hot water, steam or electric heat. These coils facilitate direct expansion cooling with standard capacities. The supply and return connections are located in the right hand end pocket. Hot water field connections are made with a 5/8 in.\[15.
UV-SVN02_-EN.book Page 28 Thursday, January 24, 2013 4:48 PM Installation—Sensors Control Options Figure 24. Wireless temp sensor with display (SP, OALH, COMM) Digit 19 = 3 Figure 27. Unit mtd temp sensor (SP, OALH, COMM) Digit 19 = L X13790843-01 (unit) X13790822-04 (wall) X13790855-01 (unit) Figure 28. Split mtd zone sensor, unit mtd fan speed switch, and wall mtd setpoint dial with On/Cancel Digit 19 = P Figure 25.
UV-SVN02_-EN.book Page 29 Thursday, January 24, 2013 4:48 PM Installation—Sensors Figure 30. Wall mtd temp sensor (SP, OALMH, COMM) Digit 19 = K Figure 32. Wall-mounted wired and wireless zone sensor dimensions 2 1 3 4 6 5 X13790841-01 (wall) X13651467-02 (comm) Figure 31.
UV-SVN02_-EN.book Page 30 Thursday, January 24, 2013 4:48 PM Installation—Sensors • Metal barriers between the receiver and the sensor (for example, plastered walls with metal lathe or metal roof decks) • Thick, solid concrete walls between the receiver and the sensor reliability, mount the receiver and sensor in line of sight. Where this is not possible, try to minimize the number of barriers between the pair of devices.
UV-SVN02_-EN.book Page 31 Thursday, January 24, 2013 4:48 PM Installation—Sensors a. Hook the cover over the top of the back plate. Apply light pressure to the bottom of the cover until it snaps in place. b. Install the security screw into the bottom of the cover (if desired). Wireless Sensors Notes: • Receivers ship installed on the unit. To remove the receiver, press in the retention tabs on the underside of the receiver enclosure (see Figure 35) and push upward.
UV-SVN02_-EN.book Page 32 Thursday, January 24, 2013 4:48 PM Installation—Sensors Note: Do not use 000 as an address. An address of 000 returns the receiver outputs to their factory defaults (zone temperature and setpoint outputs: 72.5°F, removes all association knowledge, and prevents association with a sensor. Figure 36. Setting the rotary address switches on the receiver and the sensor Note: Do not use 000 as an address.
UV-SVN02_-EN.book Page 33 Thursday, January 24, 2013 4:48 PM Installation—Sensors 3. Power the sensor by removing the insulation strip from between the two batteries. Model WZS sensor LED1 LED2 LED3 LED5 Association is automatically initiated between the sensor and the receiver. When LED3 on the receiver stops blinking, association has been established. Test button If the first association attempt is unsuccessful, the sensor automatically re-attempts association with the receiver every 10 minutes.
UV-SVN02_-EN.book Page 34 Thursday, January 24, 2013 4:48 PM Installation—Sensors Configuring the Wireless Display Sensor (Model WDS only) Note: Sensors shipped with the fan-coil are preconfigured for three speeds. The configuration of the sensor determines which system features can be accessed and changes can be made by the tenant (for example, changes to cooling/heating mode, setpoint, or fan speed. Verify system and associated unit features before configuring the sensor.
UV-SVN02_-EN.book Page 35 Thursday, January 24, 2013 4:48 PM Installation—Sensors Setting Temperature • Choose Fahrenheit or Celsius • Choose the degree resolution (whole degrees, half degrees, or tenths of degrees). Configuration Options . . . . . . Setpoint no setpoint single setpoint dual setpoint System no system options enabled Fan (Default) Note: Not all fan options are available for all systems.
UV-SVN02_-EN.book Page 36 Thursday, January 24, 2013 4:48 PM Installation—Sensors 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. Press the up and down arrows for 3 seconds. The arrow indicates setpoint display, as shown in the figure.
UV-SVN02_-EN.book Page 37 Thursday, January 24, 2013 4:48 PM Installation—Sensors Values—Failure and Default Modes of Operation (Wireless Controls),” p. 99). • The receiver conducts an energy scan for 20 seconds to determine the clearest channel on which to operate. • LED3 flashes On every 2 seconds when it is ready to accept a sensor association request. When an association request is made by a sensor, the receiver instructs the sensor on which power level to operate.
UV-SVN02_-EN.book Page 38 Thursday, January 24, 2013 4:48 PM Installation—Sensors Changing Heating and Cooling Room Temperature Settings (applies to some systems) Some systems allow you to select both heating and cooling room temperature settings. If your system has this option, this symbol appears when you adjust the temperature setting. When you adjust the cooling setting, the top arrow and snowflake flash. When you adjust the heating setting, the bottom arrow and flame flash. 1.
UV-SVN02_-EN.book Page 39 Thursday, January 24, 2013 4:48 PM Installation—Sensors Wireless Sensor Specifications The following table presents specifications for all models of the wireless sensor sets. Sensor operating temperature 32°F to 122°F Receiver operating temperature -40°F to 158°F Storage temperature -40°F to 185°F Storage and operating humidity 5% to 95%, non-condensing range Accuracy 0.5°F over a range of 55ºF to 85°F Resolution 0.125°F over a range of 60°F to 80°F 0.
UV-SVN02_-EN.book Page 40 Thursday, January 24, 2013 4:48 PM Installation—Sensors The following table presents agency compliance information for wireless sensor set models as shown. United States compliance (all models) UL listed: UL 94-5VA Flammability rating UL 916: Energy management equipment FCC CFR47, Section 15.247 & Subpart E Digital Modulation Transmission with no SAR (FCC Identification TFP13651127) This device complies with Part 15 of the FCC Rules.
UV-SVN02_-EN.book Page 41 Thursday, January 24, 2013 4:48 PM Installation—Electrical Wiring Electrical Grounding Restrictions. All sensor and All classroom unit ventilators have 115 V motor power. Motor data can be found in Table 11 and Table 12: Table 11. UV Standard motor data(a) Unit Size Volts RPM CFM Amps Watts (FLA) HP 75 115/60/1 1050 750 1.3 135 1 100 115/60/1 1050 1000 1.3 180 1 125 115/60/1 1050 1250 1.3 191 1 150 115/60/1 1050 1500 1.
UV-SVN02_-EN.book Page 42 Thursday, January 24, 2013 4:48 PM Installation—Electrical • 480V, 3-phase, 4-wire system: L1, L2, L3, and N (neutral) Note: The supply neutral wire must be connected to the neutral terminal block. Operational controls and an electric heating safety device are factory mounted. The safety device is a high temp cutout which de-energizes electric heating elements through the K1 safety contactor. Figure 38.
UV-SVN02_-EN.book Page 43 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Overview • This section addresses changes to unit ventilators, integrating new Trane Brushless DC motors and controllers. This exciting new series delivers outstanding comfort, safety, and performance with greatly reduced energy consumption compared to traditional units with permanent split capacitance AC motors. The new series of units will provide a long service life with proper installation and operation.
UV-SVN02_-EN.book Page 44 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup • The engine integrates a versatile configurable auxiliary temperature sensor. CSTI Adapter Board • The engine incorporates various safety and lockout features, such as maintaining proper fan speeds, if electric heat is called for. Figure 42. CSTI adapter board 1 Standard Adapter Board Figure 41.
UV-SVN02_-EN.book Page 45 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Installation and Initial Setup WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized.
UV-SVN02_-EN.book Page 46 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup • Wall-mounted low-voltage fan speed switch inputs to the adapter boards’ terminal strips and 24 Vac tap to field-installed fan speed switch. • Field-supplied controllers/thermostats to the adapter boards’ terminal strips and 24 Vac power tap to field-supplied controller/thermostat. • Adjustment and calibration of the variable speed inputs (VSP/0–10V) on the system.
UV-SVN02_-EN.book Page 47 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Adjustment and Configuration of the Engine Board CSTI Adapter Board Field Connections Figure 44. CSTI adapter board field connections 3 2 1 13 12 11 10 9 8 7 6 5 4 3 2 1 WARNING Safety Alert! You MUST follow all recommendations below. Failure to do so could result in death or serious injury. 1. VSP 10V 6. 2. VSP 0–10V 7. V1Op/Cooling 3. VSP DC COM 8. Not used 9. Not used 1. 24 Vac Y (hot) 10.
UV-SVN02_-EN.book Page 48 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup 1. Status display for instant touch-free confirmation of unit operation. Figure 45. ECM engine label 2. Configuration parameter and value display and modification changes (using integrated menu/set buttons). 3. Error code prioritized reporting. Status Display Figure 46.
UV-SVN02_-EN.book Page 49 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup RPM Mode RUNNING/ FAN STATUS CONTINUOUS LOOP Displayed when: 1) No error codes are present 2) Motor has completed ramping → → Indicates the current rpm of Motor 1 in the system. “0” rpm here indicate that no fan speed has been requested. Indicates the current rpm of Motor 2 in the system. “0” rpm here indicate a fan off condition OR a fan “missing” condition(a).
UV-SVN02_-EN.book Page 50 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Configuration parameter and value display and modification changes Table 15. Button actuation levels The ECM engine board’s on-board user interface is easy to use and supports: Button Duration Action Short Press in Status Display <1 sec None 1. Verification/auditing of on-board parameter settings (read-only) 2. Adjustment of the on-board settings (write) Figure 47.
UV-SVN02_-EN.book Page 51 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Configuration Use Examples Example 1. To view the value of parameters without saving. In this case we wish to verify that the “Low Speed Value” for Motor 1 is set correctly to 800 rpm. We start with the ECM engine scrolling status display and proceed as follows: It would appear that the value has been changed, but if we check the value, we notice that the original value has been retained. Example 2.
UV-SVN02_-EN.book Page 52 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Error Codes Displayed during abnormal operation. Indicates a locked rotor condition of Motor 1. The motor will be locked out until the cause has been resolved, and the power cycled; refer to refer to “Troubleshooting (ECM),” p. 103 for resolution details. Motor 2 will continue to operate, but will not be monitored. Fan Status function, if being used, will report an inoperative motor.
UV-SVN02_-EN.book Page 53 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Initial Setup and Configuration After connections of power and hookup of customer installed controls/fan speed switches and under normal/ operative conditions the only adjustments needed to be made to the ECM engine board during commissioning of the unit are: • Adjustment and calibration of the variable speed inputs (VSP/0–10V) on the system, where applicable.
UV-SVN02_-EN.book Page 54 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup • thermostatic inputs (with adjustable speed), so the use of the 0–10V inputs is optional. unit will never attain maximum speeds, defined as and . All inputs are independently configurable and simultaneously accessible, and the ECM engine will choose the highest user (configured and requested) speed. However, care should be taken with customer controls to avoid contention of signals. 4.
UV-SVN02_-EN.book Page 55 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Use of Potentiometer/Rheostat For VSP Figure 48. Typical connection WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized.
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UV-SVN02_-EN.book Page 57 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup work correctly unless the ECM engine board is configured to perform these functions. • • • Customers are advised to locate the changeover coil temperature sensor on the bypass line if possible, to avoid measuring standing water temperature.
UV-SVN02_-EN.book Page 58 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup c. The temperature sensed is higher than the parameter. another unit will result in abnormal operation. The label contains four important sections: d. The parameter is higher than the parameter. 1. How to enter the configuration menu e. The temperature is not in the dead-band between the parameter and the parameter (in this case, previous state will be retained). 3.
UV-SVN02_-EN.book Page 59 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Configuration Settings of the ECM Engine Board WARNING 3. If the format setting for rpm values are not correct (i.e., not four-digit: XXXX), please check the operation mode of the ECM engine board and and motor signal output format and . Safety Alert! You MUST follow all recommendations below. Failure to do so could result in death or serious injury.
UV-SVN02_-EN.book Page 60 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Table 17. Configuration settings of the ECM engine board Description on Unit Label Mtr 1 High Spd Mtr 1 Med Spd Mtr 1 Low Spd EHStg1 Mtr1 Spd EH Stg 2 Mtr 1 Spd User Interface Name Typical User Interface Value Notes: Description Sets the high-speed rpm for Motor 1. Sets the medium-speed rpm for Motor 1. Sets the low-speed rpm for Motor 1.
UV-SVN02_-EN.book Page 61 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Table 17. Configuration settings of the ECM engine board (continued) Notes: User Interface Name Typical User Interface Value Mt2 Ovspd RPM Selects the rpm above which the Motor 2 will be assumed to be in an overspeed condition and will need to be shut down. This envelope protection value should not be altered.
UV-SVN02_-EN.book Page 62 Thursday, January 24, 2013 4:48 PM ECM Overview and Setup Table 17. Configuration settings of the ECM engine board (continued) Description on Unit Label Protect Funct User Interface Name Typical User Interface Value Notes: Description These notes are provided for reference only, and the ECM engine label must be used as the ultimate guide for setting up an engine board on specific units.
UV-SVN02_-EN.book Page 63 Thursday, January 24, 2013 4:48 PM Time Clock Setting the Time Clock Set the Time Format, Time, and Day The Time Clock must be programmed for the unit to operate. If not programmed, the unit may not run in the correct occupied/unoccupied state until timing instructions are received from the Time Clock. (Program to 24 hr or am/pm format.) Note: Power must be supplied to the unit for the time clock to be set.
UV-SVN02_-EN.book Page 64 Thursday, January 24, 2013 4:48 PM Time Clock 2. The hour display begins to blink—use the + and/or buttons to select the desired setting and then press OK. • Press the +1h button (see Figure 54) to add 1 hour to the current time. Press the +1h button again to subtract 1 hour from the current time. 3. The minute display begins to blink—use + / - to select the desired setting and press OK. Figure 54. Daylight Savings Time 4.
UV-SVN02_-EN.book Page 65 Thursday, January 24, 2013 4:48 PM Wired Controllers—Communication Wiring Wiring Installation (Tracer ZN520) Tracer ZN520 controllers are LonTalk® devices that interface with the Trane Tracer Summit building management system. Reference the unit wiring diagram or submittals. Ground shields at each Tracer ZN520, taping the opposite end of each shield to prevent any connection between the shield and anther ground.
UV-SVN02_-EN.book Page 66 Thursday, January 24, 2013 4:48 PM Wired Controllers—Communication Wiring Wiring Overview Outline or part of the BACnet Device ID (refer to the illustration below). IMC General Instructions (p. 66) 24 VAC XFRM AO1 BI4 AO2 BI5 UI1 UI2 1 P1 BACnet MS/TP Link P2 LINK IMC TX RX SERVICE SERVICE TOOL 78 78 4 56 78 4 56 0 x10 9 1 BO1 BO2 BO3 BO4 BO5 BO6 BO7 BO8 BO9 3 0 x100 ADDRESS 9 1 4 56 1 23 9 Connection Wiring (p. 67) 23 Setting the Address (p.
UV-SVN02_-EN.book Page 67 Thursday, January 24, 2013 4:48 PM Wired Controllers—Communication Wiring Note: The BACnet Device ID is displayed as the Software Device ID on the Tracer TU Controller Settings page in the Protocol group. Lin Link k1 2 Power Supply Please read all of the warnings, cautions, and notices below before proceeding with this section.
UV-SVN02_-EN.book Page 68 Thursday, January 24, 2013 4:48 PM Wired Controllers—Communication Wiring Transformer Recommendations A 24Vac power supply must be used for proper operation of the binary inputs, which requires 24Vac detection. In addition, the spare 24Vac outputs may be used to power relays and TRIACS. • • . 24Vac transformer A pigtail connection may be necessary between earth ground and/or enclosure ground if the device is not grounded through one leg of the transformer wiring.
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UV-SVN02_-EN.book Page 70 Thursday, January 24, 2013 4:48 PM Startup Tracer ZN520 Unit Startup Refer to the most recent version of Trane publication CNTSVX04A-EN (Tracer ZN520 Unit Controller: Installation, Operation and Programming Guide). The factory preprograms the ZN520 with default values to control the temperature and unit airflow. Use Tracer Summit building automation system or Rover™ software to change the default values.
UV-SVN02_-EN.book Page 71 Thursday, January 24, 2013 4:48 PM Startup speed (motor/energy/acoustics ) and valve position (pump energy, chilled water reset ). As the capacity requirement increases at low fan speed, the water valve opens. When the low fan speed capacity switch point is reached, the fan switches to medium speed and the water valve repositions to maintain an equivalent capacity. The reverse sequence takes place with a decrease in required capacity.
UV-SVN02_-EN.book Page 72 Thursday, January 24, 2013 4:48 PM Startup communicated occupancy request is occupied, the controller uses the local occupancy binary input to switch between the occupied and occupied standby modes. During occupied standby mode, the controller’s economizer damper position goes to the economizer standby minimum position. The economizer standby minimum position can be changed using Rover service tool.
UV-SVN02_-EN.book Page 73 Thursday, January 24, 2013 4:48 PM Startup The controller only cycles the fan off with heating and cooling capacity in the unoccupied mode. open (modulating valves) or on continuously (twoposition valves). The economizer is used for cooling purposes whenever the outdoor temperature is below the economizer enable setpoint and there is a need for cooling.
UV-SVN02_-EN.book Page 74 Thursday, January 24, 2013 4:48 PM Startup Table 19, Table 20, and Table 21. Table 19. Local fan switch enabled (Tracer ZN520) Communicated Fan Speed Input Fan Switch (Local) Fan Operation Off Ignored Off Low Ignored Low Medium Ignored Medium High Ignored High Auto Off Fan Cycling Operation (Tracer ZN520) Tracer ZN520 does not support fan cycling in occupied mode. The fan cycles between high speed and off in the unoccupied mode only.
UV-SVN02_-EN.book Page 75 Thursday, January 24, 2013 4:48 PM Startup (either hard-wired or communicated) to determine whether the entering water can be used for the desired heating or cooling. If the water temperature is not usable for the desired mode, the controller continues to compare the entering water temperature against the effective space temperature for a maximum of three minutes.
UV-SVN02_-EN.book Page 76 Thursday, January 24, 2013 4:48 PM Startup units) and building automation system applications. For this application you will need to use the Rover service tool. For more information on setup, refer to the Trane publication EMTX-SVX01G-EN (Rover Service Tool: Installation, Operation, and Programming Guide), or the most recent version.
UV-SVN02_-EN.book Page 77 Thursday, January 24, 2013 4:48 PM Startup Table 25. Analog inputs (Tracer ZN520) controller ignores the hard-wired space temperature input and uses the communicated value.
UV-SVN02_-EN.book Page 78 Thursday, January 24, 2013 4:48 PM Startup tool. If the zone sensor switch is disabled, the controller resorts to its stored configuration default fan speeds for heating and cooling, unless the controller receives a communicated fan input. When the fan switch is in the off position, the controller does not control any unit capacity. The unit remains powered and all outputs drive to the closed position.
UV-SVN02_-EN.book Page 79 Thursday, January 24, 2013 4:48 PM Startup Occupied Mode (UC400) Timed Override Control (UC400) In Occupied Mode, the UC400 controller maintains the space temperature based on the occupied space temperature setpoint ± occupied offset. The controller uses the occupied mode as a default mode when other forms of occupancy request are not present and the fan runs continuously. The outdoor air damper, if present, will close when the fan is OFF.
UV-SVN02_-EN.book Page 80 Thursday, January 24, 2013 4:48 PM Startup (configurable using the Tracer TU service tool), and the cooling capacity is at a minimum, the available heating capacity is used to raise the discharge air temperature to the low limit (refer to the following section, “Discharge Air Tempering (UC400).”). • • Simplified zone control— if discharge air temperature failure occurs, then simplified zone controls runs.
UV-SVN02_-EN.book Page 81 Thursday, January 24, 2013 4:48 PM Startup adequate torque to start the fan motor from the OFF position. AUTO Fan Operation; ECM Acoustical Mode (UC400) Note: In occupied mode, the UC400 controller requires continuous fan operation because of cascade zone control. In unoccupied mode, the fan cycles.
UV-SVN02_-EN.book Page 82 Thursday, January 24, 2013 4:48 PM Startup stroke time for each valve is configurable using the Tracer TU service tool.
UV-SVN02_-EN.book Page 83 Thursday, January 24, 2013 4:48 PM Startup position and 100 percent) to control the amount of outdoor air cooling capacity. When the outdoor air temperature rises 5°F (2.8°C) above the economizer enable point, the controller disables economizing and moves the outdoor air damper back to its predetermined minimum position, based on the current occupancy mode or communicated minimum outdoor air damper position.
UV-SVN02_-EN.book Page 84 Thursday, January 24, 2013 4:48 PM Startup • If the fan is not operating when the controller has the fan controlled to ON, the controller generates a Low Airflow-Supply Fan Failure diagnostic. • If the UC400 controller energizes the fan output for 1 minute, and the fan status switch indicates no fan operation, the controller performs a unit shutdown and generates a Low Airflow-Supply Fan Failure diagnostic.
UV-SVN02_-EN.book Page 85 Thursday, January 24, 2013 4:48 PM Maintenance WARNING Hazardous Service Procedures! NOTICE: Equipment Damage! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. When possible, disconnect all electrical power including remote disconnects before servicing.
UV-SVN02_-EN.book Page 86 Thursday, January 24, 2013 4:48 PM Maintenance Figure 58. Removal of screws holding drain pan in place. Figure 59. Tie wires from the cable chase out of the way 4. Disconnect motor wires. 5. Loosen the four bolts (two on each side of the fanboard; see Figure 60). NOTICE: Equipment Damage! Support the fanboard before removing the bolts that support it to prevent it from falling out of the unit, which could cause equipment damage.
UV-SVN02_-EN.book Page 87 Thursday, January 24, 2013 4:48 PM Maintenance reservoir to the bearing surface without the use of grooves or holes in the inner bearing surface. Do not alter the inner bearing in any way. Fill the bearing reservoir every six months with a No. 10 SAE, non- detergent, automotive type oil. Preventive Maintenance A comprehensive preventive maintenance program should be established for a unit ventilator system. The following are several key elements: • Inspect the filters monthly.
UV-SVN02_-EN.book Page 88 Thursday, January 24, 2013 4:48 PM Diagnostics Troubleshooting Checklist If operating difficulties are encountered, refer to the following table for probable causes and corrective measures. If suggested corrective measures have been taken, and the trouble still persists, contact the control supplier or the local Trane Sales Office.
UV-SVN02_-EN.book Page 89 Thursday, January 24, 2013 4:48 PM Diagnostics Problem Heating Cooling Cause Room too cool Room too cool Unit utilizes Wall Fin auxiliary radiation: Room too hot Motor Unit 265 and 460 volt unit X Correction X Room sensor is not properly set. Reset room sensor temperature. X Clogged filter. Replace filter. X Face and bypass damper, or coil valve is malfunctioning.
UV-SVN02_-EN.book Page 90 Thursday, January 24, 2013 4:48 PM Diagnostics Translating Multiple Diagnostics (Tracer ZN520) The controller senses and records each diagnostic independently of other diagnostics. It is possible to have multiple diagnostics present simultaneously. The diagnostics are reported in the order they occur.
UV-SVN02_-EN.book Page 91 Thursday, January 24, 2013 4:48 PM Diagnostics Using Trane’s Service Tool, Rover (Tracer ZN520) Rover, Trane’s service tool, can reset diagnostics present in the controller and troubleshoot the unit. For more information, refer to the Trane publication EMTX-SVX01G-EN (Rover Service Tool: Installation, Operation, and Programming Guide), or the most recent revision.
UV-SVN02_-EN.book Page 92 Thursday, January 24, 2013 4:48 PM Diagnostics Table 34. Electric heat not operating (Tracer ZN520) Table 36. Fresh air damper stays closed (Tracer ZN520) Probable Cause Explanation Probable Cause Normal operation The controller cycles electric heat on and off to meet the unit capacity requirements. Normal operation Requested mode: off It is possible to communicate the operating mode (such as off, heat, cool) to the controller.
UV-SVN02_-EN.book Page 93 Thursday, January 24, 2013 4:48 PM Diagnostics Output Testing and Diagnostics (UC400) shut down. Manual diagnostics can be cleared from the UC400 controller in one of the following ways: • By using the Tracer TU service tool to reset latching diagnostics on the Alarms Status tab or by temporarily overriding the Reset Diagnostic Request (bv/2) on the Binary Status tab. • Through a building automation system. • By cycling power to the controller.
UV-SVN02_-EN.book Page 94 Thursday, January 24, 2013 4:48 PM Diagnostics Table 37. UC4000 diagnostics (continued) Diagnostic Type Diagnostic Probable Cause Consequences Space Invalid or missing temperature value for zone (a) failure temperature. Automatic • Discharge air temperature control runs • Unit shuts OFF if both space temperature and discharge air temperature fail Entering water temp failure Invalid or missing value for zone temperature.
UV-SVN02_-EN.book Page 95 Thursday, January 24, 2013 4:48 PM Diagnostics Figure 62. LED, Test button, and symbol locations on the sensor Error codes appear on the display of the model WDS sensor when diagnostics occur (see Table 38). Table 38. Diagnostics on the sensor (wireless controls) Error code (WDS LED state when Test button is pressed (WZS sensor display) Indicates...
UV-SVN02_-EN.book Page 96 Thursday, January 24, 2013 4:48 PM Diagnostics Table 40. Observing signal strength on the sensor (wireless controls) Symbol (WDS sensor LED state Indicates... User action (WZS sensors) display) LED1: Off LED2: Off LED3: Off No Test symbols Normal state appear • No Test button press. LED1: Off Press Test button on the LED2: Off LED3: Off sensor Associated; no communication with receiver • Associated, but no signal from the receiver after pressing Test button.
UV-SVN02_-EN.book Page 97 Thursday, January 24, 2013 4:48 PM Diagnostics For more information on interpreting the LEDs and the display symbols that indicate signal strength, see “Testing Signal Strength (Wireless Controls),” p. 95. Replacing Sensor Batteries (Wireless Controls) Sensor battery type, length of life, and installation are addressed in this section. Battery Type (Wireless Controls) WARNING Prevent Injury! Keep away from small children.
UV-SVN02_-EN.book Page 98 Thursday, January 24, 2013 4:48 PM Diagnostics • The receiver receives a disassociation notification from its associated sensor • The receiver does not receive a communication from its associated sensor within 50 minutes. • The sensor and receiver are associated and communicating at the time the sensor is set to 000 and the Test button is pressed. Note: A disassociated sensor will transit an association request every 10 minutes.
UV-SVN02_-EN.book Page 99 Thursday, January 24, 2013 4:48 PM Diagnostics but the receiver determines the ultimate output power level of the sensor. Output Values—Failure and Default Modes of Operation (Wireless Controls) The following table provides output values for failure and default modes of operation, which can be used for troubleshooting. Table 44. Output values Situation Receiver address = 000 11.17 kΩ, 72.5°F (22.
UV-SVN02_-EN.book Page 100 Thursday, January 24, 2013 4:48 PM Diagnostics Troubleshooting (Tracer ZN520) If the LED is off, either the power is off, an abnormal condition is present or the TEST button is pressed. Yellow COMM LED (Tracer ZN520) 1 If the LED is off continuously, the controller is not detecting any communication. This is normal for units in standalone applications. If the LED blinks, the controller detects communication.
UV-SVN02_-EN.book Page 101 Thursday, January 24, 2013 4:48 PM Diagnostics two seconds.The green LED will begin to blink, indicating the controller is in test mode. Troubleshooting (UC400) Table 47. Table 48 through Table 53, p. 103 provide troubleshooting information if encountering operational problems with the UC400 controller. Test sequence for 1-heat/1-cool configurations (Tracer ZN520) Steps Fan BOP1-3 Cool Output BOP4(a) Heat Output BOP5 Damper BOP6 1.
UV-SVN02_-EN.book Page 102 Thursday, January 24, 2013 4:48 PM Diagnostics Table 49. Valves remain closed (UC400) (continued) Probable Cause Explanation Unit configuration The controller must be properly configured based on the actual installed end devices and application. If the unit configuration does not match the actual end device, the valves may not work correctly. Random start observed Requested mode off After power-up, the controller always observes a random start from 5 to 30 seconds.
UV-SVN02_-EN.book Page 103 Thursday, January 24, 2013 4:48 PM Diagnostics Table 53. Outdoor air damper remains open 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.
UV-SVN02_-EN.book Page 104 Thursday, January 24, 2013 4:48 PM Diagnostics input 1 on the Tracer ZN controller (polarity sensitivity). • The mini-access lid on the front of the main control panel lid has the ECM engine troubleshooting/setup guide affixed to the back of the lid. This guide is unitspecific and should be consulted before determining the disposition of a unit. connections will cause malfunction and the system will shutdown.
UV-SVN02_-EN.book Page 105 Thursday, January 24, 2013 4:48 PM Diagnostics 3. VSP Inputs (0–10V inputs) are of the wrong polarity – Verify that variable speed (VSP) inputs are properly wired to 1TB4. electronics will be damaged, and the motor will not be controllable. • Verify that the fan speed request is not below 450 rpm. Speeds below 450 rpm are not supported on the fancoil product. • Verify that the all binary inputs to the customer terminal blocks are of proper and consistent polarity.
UV-SVN02_-EN.book Page 106 Thursday, January 24, 2013 4:48 PM Replacing ECM Components WARNING Hazardous Voltage w/Capacitors! NOTICE: Equipment Damage! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized.
UV-SVN02_-EN.book Page 107 Thursday, January 24, 2013 4:48 PM Replacing ECM Components Circuit Modules Replacement Notes/Work Instructions 1. Circuit modules are equipped with nylon standoffs which can either be removed by squeezing the barbs at the rear of the control panel, or squeezing the latch above the circuit module. If the latter method is chosen, the standoffs will be retained on the metal panel.
UV-SVN02_-EN.book Page 108 Thursday, January 24, 2013 4:48 PM Replacing ECM Components Figure 66. 3. Once the light has been activated, click OK on the Softset Rotary Address - Expansion Module dialog box shown in Step 2. When you click OK, Tracer TU softsets the engine module IMC address to 99 and the light on the module will turn off. 4. Return to the Expansion Module Status box, click Discover and wait five to ten seconds for Tracer TU to refresh the screen.
UV-SVN02_-EN.book Page 109 Thursday, January 24, 2013 4:48 PM Accessories Wallboxes The following instructions are general recommendations for installing wall intake boxes. Consult the architectural plans for specific requirements. Additional materials required to complete any specific installations (such as duct connections, metal mounting plates, or flanges) are not furnished by Trane. For best results, all air intake boxes should be removable from outside of the building.
UV-SVN02_-EN.book Page 110 Thursday, January 24, 2013 4:48 PM Accessories Figure 71.
UV-SVN02_-EN.book Page 111 Thursday, January 24, 2013 4:48 PM Accessories Installation in Masonry Walls A typical method of installing the wallbox in a masonry wall opening is illustrated in Figure 72. Grout the top and bottom of the wall box frame as noted. A sloped water dam located in the space between the unit and wall facilitates moisture drainage. Grouting at the ends of the intake box will complete the seal between the wall box frame and the masonry opening.
UV-SVN02_-EN.book Page 112 Thursday, January 24, 2013 4:48 PM Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com.
