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. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or

serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

November 2024

SAFETY WARNING

UV-SVX007A-EN

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Summary of Contents for Trane HUV075

Page 1 Installation, Operation, and Maintenance Horizontal Classroom Unit Ventilator Modul HUV 750 to 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. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
Page 2: Warnings, Cautions, And Notices
(HCFCs). Not all refrigerants containing these compounds bump cap, fall protection, electrical PPE and arc have the same potential impact to the environment. Trane flash clothing). ALWAYS refer to appropriate advocates the responsible handling of all refrigerants.
Page 3: Product Safety Information
This document and the information in it are the property of regulations are more stringent than these Trane, and may not be used or reproduced in whole or in policies, those regulations supersede these part without written permission. Trane reserves the right to policies.
Page 4: Table Of Contents
Table of Contents Model Number Description ....7 Horizontal Recessed Mounting..25 Coil Piping and Connections ....26 General Information .
Page 5 Values ....... 46 Trane BLDC Motor ....57 ECM Engine Controller .
Page 6 Table of Contents Modulating Outdoor/Return Air Damper Sensor Diagnostics....90 (Symbio 400-B) ..... . . 76 Receiver Diagnostics .
Page 7: Model Number Description
Model Number Description Digit 1, 2, 3 — Unit Configuration Digit 12, 13 — Coil Letter Designation Digit 18 — Damper Configuration (continued) (Coupled Coil Options) HUV = Horizontal Unit Ventilator 0 = Field-installed damper actuator 1 = 100% return air/no damper or actuator (Modulating ASHRAE Cycle II) DA = 1-row, 12 fpi hot-water coil with 2-row,12 fpi Digit 4 —...
Page 8 Model Number Description Digit 21 — Discharge Arrangement Digit 30 — Cooling/Changeover Valve Type Digit 35 — Heating Auto Flow GPM 1 = Bar grille discharge 0 = None 0 = None 2 = Duct collar discharge per submittal A = 2-way, 2-position N.C. A = 1.0 3 = Duct collar discharge 3/4 in.
Page 9: General Information
2 to 10 Vdc actuator is also available when other than both end pockets and large knockouts for piping and Trane controls is required. See the following table for electrical connections. All electrical connections are made technical data of the OA/RA actuator.
Page 10: Unit Ventilator Controls (Options)
The controller is mounted, pre-wired, and pre- programmed to selected control components best suited for room comfort. When Trane controls are ordered for an installation, the controls are shipped already installed and factory-tested to ensure proper operation at start-up.
Page 11: Unit Switch
The ECM engine contains settings that will limit the output The unit On-Off switch, provided by Trane, is typically power of the motor under these overload conditions. If the...
Page 12: Pre-Installation
Pre-Installation Jobsite Inspection 1. Place the unit(s) on a dry surface or raise above the ground to assure adequate air circulation beneath the Always perform the following checks before accepting a unit. unit: 2. Cover the unit(s) with a water proof tarp to protect them 1.
Page 13: Dimensions And Weights
65-1/2 × 15-1/4 × 1 77-1/2 × 15-1/4 × 1 77-1/2 × 15-1/4 × 1 actual) Working weight is approximately 10% less than shipping weight. Trane recommends 3/8-inch rods for hanging suspension. Table 4. Control methodology Table 5. Control sequences Fan Speed...
Page 14 Dimensions and Weights Figure 3. Horizontal unit ventilator with ducted front discharge dimensional data; sizes 075 to 150 (dimensions in inches) 2”-DIA K.O. 7/8”-DIA K.O. FOR PIPING FOR ELECTRICAL F.A. UPPER BACK R.A. LOWER BACK 2 3/8” 4 7/8” 17 1/8” 17 1/8”...
Page 15 Dimensions and Weights Figure 4. Horizontal unit ventilator with ducted front discharge dimensional data; size 200 (dimensions in inches) 2”-DIA K.O . 7/8”-DIA K.O . FOR PIPING FOR ELECTRICAL F. A. U PPER BACK R.A. L O WER BACK 2 3/8” 4 7/8”...
Page 16 Dimensions and Weights Figure 5. Horizontal unit ventilator with double deflection discharge dimensional data; sizes 075 to 150 (dimensions in inches) 2”-DIA K.O. 7/8”-DIA K.O. 3/4” FOR PIPING FOR ELECTRICAL 4” R.A. LOWER BACK 2 3/8” 7 1/4” 4 7/8” 5 1/8”...
Page 17 Dimensions and Weights Figure 6. Horizontal unit ventilator with double deflection discharge dimensional data; size 200 (dimensions in inches) 2”-DIA K.O . 7/8”-DIA K.O . 3/4” FOR PIPING FOR ELECTRICAL 5” R.A. L O WER BACK 2 3/8” 9 1/4” 4 7/8”...
Page 18 Dimensions and Weights Figure 7. Supply/return air arrangements for the horizontal unit ventilator DIGIT 20 = A DIGIT 20 = F DIGIT 20 = L FA D U CT TO P FA D U CT U PPER BACK 100% RA DUCT L OWER BACK w/RA DUCT L OWER BACK w/RA DUCT L OWER BACK DIGIT 20 = B...
Page 19: A2L Information
• To be repaired only by trained service At all times, Trane’s maintenance and service guidelines shall be followed. If in doubt, contact Trane technical personnel. support for assistance. • Do not puncture refrigerant tubing.
Page 20: Leak Detection
• Verify continuity of earth bonding. 5. Continuously flush or purge with inert gas when using • Replace electrical components with Trane replacement flame to open circuit. parts, or those meeting the same ratings and qualified 6. Open the circuit.
Page 21: Decommissioning
A2L Information • Ensure that contamination of different refrigerants does 8. Do not overfill cylinders (no more than 80% volume not occur when using charging equipment. liquid charge). • Hoses or lines shall be as short as possible to minimize 9.
Page 22: Ignition Sources In Unit
A2L Information Ignition Sources in Unit adjusted A threshold. This product contains a leak detection system if a circuit charge is greater than 3.91 This unit does not contain any ignition sources. All potential lbs. As a result, no further leak detection system ignition sources, (including factory or field installed evaluation is needed.
Page 23 A2L Information Figure 9. Charge vs min room area (SI) Charge vs Min Room Area (SI) 280.0 260.0 Release Height-0.6m 240.0 Release Height-1.0m Release Height-1.4m 220.0 Release Height-1.8m Release Height-2.2m 200.0 180.0 160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 10.0 12.0 14.0...
Page 24: Leak Detection System
A2L Information of refrigerant with a minimum room area requirement of mechanical ventilation system meets the requirements of 180 ft with a 2.2 m release height. ANSI\ASHRAE Standard 15-2022, Section 7.6.4. Leak Detection System = 180 ft x 1.05 x 2 = 378 ft min.adj (Refrigerant charge greater than 3.91 lb No additional ventilation is required.
Page 25: Installation - Mechanical
The horizontal unit ventilator may be attached directly to Note: Isolator and suspension rods are to be provided the ceiling or suspended from the ceiling by hangers. by the installer. For hanging suspension, Trane Hanger rods should be at least 3/8-in. diameter steel to recommends 3/8-in. rods.
Page 26: Coil Piping And Connections
Installation - Mechanical corner transition pieces, mounting screws, filler pieces, and Figure 12. Horizontal unit ventilator with front panel removed pressure sensitive gaskets. Refer through Figure 10, p. 26 Figure 12, p. 26 for typical horizontal installation. Figure 10. Recess flange installation around Discharge P anel End Cover horizontal unit ventilator access panel and inlet...
Page 27 Installation - Mechanical • Basic with manual circuit setter: Union, shut-off ball control valve and manual circuit setter on the return valve on the supply line. Union, control valve and line. manual circuit setter on the return line. • Deluxe with auto flow: Union, strainer, P/T port, and •...
Page 28 Installation - Mechanical Figure 14. Piping package layout BASIC 2-WAY 3-WAY 3-way main or 2-way main or auxilliary auxilliary water valve Union water valve Union Ball valve Return connection Ball valve Ball valve Supply Supply connection connection Ball valve Union Union Return Typical...
Page 29: Valve And Actuator Operation
Installation - Mechanical Note: Before installation of piping package, the shipping After the condensate drain piping has been completed, bracket holding the piping in place, must be check water flow to be sure the system properly carries and removed. away all condensate accumulation. All union connections should be tightened in the field.
Page 30: Valve
Installation - Mechanical Table 11. Valve stroke time (continued) Adjust the circuit setter valve by turning the valve stem until the appropriate pressure drop is achieved. Stroke Time End Stop Position Valve Selection After achieving the proper setting, slightly loosen the (Seconds) two socket head cap screws and rotate the memory 1/2 in.
Page 31: Split System Units
To connect the condensing unit lines, cut off the stubouts and swage. The condensing unit lines can then be brought into the swage and brazed. Trane recommends the use of nitrogen purge when brazing refrigerant lines to prevent formation of oxides in the lines.
Page 32: Modulating Steam Valves
Installation - Mechanical There are detailed methods for determining condensate Figure 21. Steam valve orientation load under various operating conditions. However, in most cases this is not necessary if the coils are piped as shown below. Follow the procedure documented in the ASHRAE Systems Handbook, Steam Systems.
Page 33 Installation - Mechanical Figure 23. Wiring for modulating steam valve actuator UV-SVX007A-EN...
Page 34: Installation - Controls
Installation - Controls Control Options • Feature can be enabled or disabled with a selector switch — however, it is set correctly at Available control options: the factory, based on customer choice of coil. • Customer-supplied terminal interface (CSTI) • The bi-metallic disc temperature switch emulation is programmable, and dead-band •...
Page 35: Burn Hazard
Installation - Controls Standard Adapter Board Field Connections 2. Damper Open 11. V2Op/EH1St/Heating Figure 26. Standard adapter board field connections 3. 24 Vac Y (gnd) 12. V2C1/EH2St (not std) 5 4 3 2 1 3 2 1 4. High 13. Dmp Cl (not std) 5.
Page 36 A 10K NTC thermistor (similar to Trane part number the auxiliary coil or electric heat (where X13790374010) is wired properly to the engine available).
Page 37: Device Addressing
In this case, hot water is determined if: 400-B controllers. For more detailed information, refer to a. A 10K NTC thermistor (similar to Trane part number Symbio™ 400-B/500 Programmable Controllers for Blower X13790374010) is wired properly to the engine...
Page 38: General Instructions
Installation - Controls General Instructions IM C XFRM UI 1 UI 2 BI 5 BI 4 Conformance to Regulatory Standards All wiring must comply with the National Electrical Code LINK IMC (NEC) and local electrical codes. SERVI C E Connecting Wires to Terminals SERVICE TOOL ADDRESS BO1 BO2 BO3...
Page 39: Power Supply
24VDC 24VDC BACnet BACnet BACnet 1 2 3 4 1 2 3 4 1 2 3 4 Trane BACnet • Damage to the transformer or a blown Terminator Tracer SC Symbio™ 400-B Symbio™ 400-B transformer fuse. Symbio™ 400-B...
Page 40: Connecting Wires
Installation - Controls and marked as the disconnecting device for the 3. Energize the transformer to apply power to the Symbio controller. 400-B controller. • 18 AWG (0.823 mm ) copper wire is recommended for 4. Observe the Symbio 400-B controller when power is the circuit between the transformer and the controller.
Page 41: Fan Mode Switch Installation
Installation - Controls Figure 33. Wall mtd temp sensor Figure 36. Split mtd zone sensor, unit mtd fan speed (SP, OCC/UNOCC, OA, LMH, COMM) switch, and wall mtd setpoint dial Figure 34. Unit mtd temp sensor (SP, OALH, COMM) Figure 37. Wall mtd temp sensor (SP, OALMH, COMM) Figure 35.
Page 42: Zone Sensor Installation
Installation - Controls Height Requirements Remove the terminals, cut and strip wires as required for installation. It is recommended that you mount the back plate a Level and position a 2 × 4 electrical junction box. maximum distance of 54 inches above the floor. If a parallel approach by a person in a wheelchair is required, reduce Follow the instructions given in Wall-Mounted Control the maximum height to 48 inches.
Page 43: Wired Zone Sensor
Installation - Controls Figure 39. Wall-mounted wired and wireless zone a. Level and install a 2 × 4-in. junction box sensor dimensions (installer supplied) vertically on the wall. b. Pull the control wires through the cutout. Attach the module to the wall using the screws provided.
Page 44: Receivers
Installation - Controls Figure 41. Mounting zone sensor base plate 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.
Page 45: Associating The Sensor To The Receiver
Installation - Controls succession (roundrobin style) while the channel scan is in progress, as shown in part 1 of the illustration. Important: Do not attempt association (leave the insulation strip in place) until the channel scan is finished. After the channel scan is finished, LED3 begins blinking (one-blink pattern) to show that the receiver is ready to be associated with a sensor (see part 2 of the following figure).
Page 46: Sensor Operations
Installation - Controls Sensor Operations Figure 43. Model WZS sensor Temporary Occupancy (Timed Override) Temporary occupancy (timed override) is available on model WDS. Temporary occupancy is selected for after- business-hours adjustment of temperature setting, fan settings, or heat/cool settings, when the system has changed to unoccupied mode.
Page 47: Sensor Transmission Time And Temperature Variables
Installation - Controls • The receiver conducts an energy scan for 20 seconds – 0.1°C for a model WDS sensor. to determine the clearest channel on which to operate. Wireless Sensor Specifications • LED3 flashes On every 2 seconds when it is ready to accept a sensor association request.
Page 48: Configuration Procedure
Installation - Controls 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. The building owner or operator may choose to limit tenant access to certain features.
Page 49: Displaying Setpoint Or
Installation - Controls Setting Configuration Options Note: Not all fan options are available for all systems. auto/off auto/off/ auto/off/low low/high med/high off/high (on) off/low/high off/low/ no fan options med/high enabled Occupancy (timed override) occupancy occupancy enabled disabled Review the display to ensure that you have selected Verify that the sensor is in operating mode and at the the correct configuration.
Page 50: Wds Operating Mode
Some systems allow WDS Operating Mode 1. Press you to select both to select the heating and cooling This section describes how to operate the Trane wireless heating/cooling room temperature setting. settings. If your sensor, model WDS. Figure 45, p. 50...
Page 51: Requesting Temporary
Press the Test button to display the battery status symbols. disappears. After Use only UL-listed non-rechargeable 1.5 V lithium AA 30 seconds, the unoccupied batteries (Trane p/n X13770035010 or equivalent). symbol will re- The following table presents agency compliance Select to cancel appear.
Page 52 Installation - Controls UL listed: UL 94-5VA Flammability CSA22.2 No. 205-M1983 Signal rating Equipment UL 916: Energy management Industry Canada (Certification no: equipment IC: 6178A-13651127) FCC CFR47, Section 15.247 & Industry Canada statement: Subpart E Digital Modulation the term IC before the certification/ registration number signifies only Transmission with no SAR (FCC Identification TFP-13651127) This...
Page 53: Time Clock
Time Clock Setting the Time Clock Set the Time Format, Time, and Day (Program to 24 hr or am/pm format.) 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.
Page 54: Set The Switching Off Time
Time Clock Deleting Programs The hour display begins to blink — use the + and/or - buttons to select the desired setting and then press OK. Press the Menu button and then press OK until the ON The minute display begins to blink — use +/- to select hour time display of the program you want to delete is the desired setting and press OK.
Page 55: Installation - Electrical
Installation - Electrical WARNING Wall-Mounted Control Interconnection Wiring: The installer must provide interconnection wiring to connect Electrical Shock Hazard! wall-mounted devices such as a fan mode switch or zone Failure to follow instructions below could result in sensor module or thermostat. Refer to the unit wiring death or serious injury.
Page 56: Electric Heat Units
Installation - Electrical Electric Heat Units Heating Coils with Direct Expansion Cooling Supply Power: Supply power wiring is to be connected to the following line terminals in the right-hand end pocket: WARNING • 208V or 240V, 3-phase, 3-wire system: L1, L2, and L3 Hazardous Voltage! •...
Page 57: Ecm Overview And Setup
The motor This section addresses changes to unit ventilators, contains no user-serviceable components inside. integrating new Trane Brushless DC motors and controllers. This exciting new series delivers outstanding NOTICE comfort, safety, and performance with greatly reduced...
Page 58: Status Display
Trane Global Parts for period of actuation. Unplug the motor to avoid a configuration kit to power control board outside the power request.
Page 59 Failure to follow instructions below could result in death or serious injury. Note: Normally, the Trane BLDC motors are configured for • Disconnect unit power before making connections soft ramps and transitions between speeds.
Page 60: Adjustment And Configuration Of The Engine Board
Error code prioritized reporting. adjustment, contact Trane Global Parts for Note: Characters on the ECM engine board display appear configuration kit to power control board outside the in red, on a black background.
Page 61: Configuration Examples
ECM Overview and Setup Configuration Parameter and Value Display Table 18. Button actuation levels (continued) and Modification Changes Button Menu/Set The ECM engine board’s on-board user interface is easy to Action use and supports: 1. Verification/auditing of on-board parameter settings tio- (read-only) 2.
Page 62 ECM Overview and Setup Example 2: Change the value of Low Speed to 820 rpm: Example 3: Double-check the value of 820 rpm has been saved. Continue from the previous example as shown below, using a long press to save the new desired value. Note: If the display has timed out and returned to the status loop, repeat Example 1 and Example 2 to arrive Note: If the display has timed out and returned to the status...
Page 63: Initial Setup And Configuration
Electric heat and changeover heat or other energy storing components provided by will be shut down. Trane or others, refer to the appropriate R R a a m m p p Indicates the motor is transitioning between manufacturer’s literature for allowable waiting periods speeds, ramping up or down.
Page 64: Equipment Damage
The 9.0V at the adapter boards, then the Aisc parameter Trane Brushless DC system comes standard should be set to (10/9=) 1 .111. If left un-calibrated, the with three to five field-accessible thermostatic...
Page 65 Follow proper lockout/ Trane or others, refer to the appropriate tagout procedures to ensure the power cannot be manufacturer’s literature for allowable waiting periods inadvertently energized.
Page 66: Configuring The Ecm Engine Board
On units with ComfortLink™ controls (Tracer ZN controllers), the Tracer® ZN board will serve as the Every Trane unit with BLDC motors will have modules primary logic to select the electric heat only if hot specifically configured at the factory for the operation of water is not available, but the engine board will that unit.
Page 67 If avoiding these Motor Damage! areas is not practical during motor control board adjustment, contact Trane Global Parts for Failure to follow instructions below could result in configuration kit to power control board outside the motor damage.
Page 68 ECM Overview and Setup Table 19. Configuration settings of the motor control board (for reference only) (continued) Typical User User Description on Inter- Description Inter- Unit Label face face Name Value Sets the minimum turn-on rpm for Motor 1, when the AI Low Spd Mtr 1 a a l l m m 1 1 analog input becomes active.
Page 69 ECM Overview and Setup Table 19. Configuration settings of the motor control board (for reference only) (continued) Typical User User Description on Inter- Description Inter- Unit Label face face Name Value Rejects noise on the analog input lines and sets up the motor control board to turn on if the thermostat or AI Floor v v F F l l r r...
Page 70 ECM Overview and Setup Table 19. Configuration settings of the motor control board (for reference only) (continued) Typical User User Description on Inter- Description Inter- Unit Label face face Name Value Do NOT change this setting. This setting locks out the following parameters from being changed, for safe operation of the unit.
Page 71: Pre-Start
Pre-Start Before energizing the unit, the following system devices ☐ Are all the unit access panels secure and in place? must be checked: ☐ Is the water flow established and circulating through all ☐ Is the high voltage power supply correct and in the units? accordance with the nameplate ratings? ☐...
Page 72: Start-Up
(3-wire floating point) or 2-position control valve option and 1-, 2-, 3- or variable-speed fan to work cooperatively to • A timed override request from a Trane zone sensor. meet precise capacity requirement, while minimizing fan • A communicated signal from either a Tracer SC or speed (motor/energy/acoustics) and valve position (pump BAS.
Page 73: Timed Override Control
OFF. The controller remains in occupied bypass mode until occupancy request exists). The Symbio 400-B controller either the CANCEL button is pressed on the Trane zone has the following occupancy modes: sensor or the occupied bypass time (configurable using the Tracer TU service tool) expires.
Page 74: Discharge Air Tempering
Start-Up Heating or Cooling Mode (Symbio 400-B) on the unit heating/ cooling capacity (0 to 100 percent). Calculated The heating or cooling mode can be determined in one of Active zone Calculated unit discharge air temperature temperature heating/cooling two ways: setpoint capacity setpoint...
Page 75: Fan Operation (Symbio 400-B)
Start-Up Fan Operation (Symbio 400-B) multiple speeds available), the fan changes based on the required capacity calculated by the control algorithm. The Symbio 400-B controller supports 1-, 2-, and 3-speed fans and variable-speed fans. The fan always operates AUTO Fan Operation; ECM Energy Efficient continuously while either heating or cooling during Mode (Symbio 400-B) occupied, occupied standby, and occupied bypass...
Page 76: Modulating Outdoor/Return Air Damper
Start-Up application. The controller opens and closes the • Setpoint appropriate valve(s) to maintain the active zone • Discharge air temperature temperature setpoint at the heating setpoint in heating • Discharge air temperature setpoint mode or the cooling setpoint in cooling mode (refer to Cascade Zone Control in “Zone Temperature Control The minimum position for an outdoor air damper is...
Page 77: Two-Position Control Of A Modulating
Start-Up Electric Heat Operation (Symbio 400-B) Modulating outdoor air damper position The Symbio 400-B controller supports both SCR Occupied or Occupied Unoccupied Occupied Standby (modulating) and staged electric heat (1- or 2-stages). SCR Outdoor Air Temperature Bypass heat is only a field-installed option. In a unit configured with staged electric heat, the electric heating circuit(s) are Outdoor air Economizing;...
Page 78 (except Trane Macon factory ECM fan motor units). The avoidance setpoint (configurable using the Tracer TU fan status switch provides feedback to the controller as service tool).
Page 79 Start-Up Freeze Protection (Discharge Air During freeze protection, the controller increases the heating capacity or decreases the cooling capacity in order Temperature Low Limit) to raise the discharge air temperature above the low limit. If The Symbio 400-B controller monitors the discharge air the discharge air temperature remains below the low limit temperature with a 10 kΩ...
Page 80: Maintenance
Turn off power to the unit and remove the front panel and electric. Additional information for controls not supplied by turning camlocks. by The Trane Company should be obtained from the Disconnect the drain line from the drain spout. controls manufacturer.
Page 81: Removal Of The Fanboard And Coil
Maintenance Figure 60. Removal of screws holding drain pan in Figure 61. Tie wires from the cable chase out of the place Disconnect motor wires. Loosen the four bolts (two on each side of the fanboard; see Figure 62, p. 81).
Page 82: Lubrication: Fan Shaft
Maintenance Lubrication: Fan Shaft Using a 7/16-in. Allen wrench, loosen the coupling on the fan shaft. One fan shaft bearing is mounted on the right end of the Loosen the screw on the motor clamp until it allow the fan board. This sleeve-type bearing has an inner surface of motor to be lifted off the base.
Page 83: Diagnostics And Troubleshooting
35°F) Replace malfunctioning component, or contact the controls contractor, or if Trane controls, see Tracer® Face-and-bypass damper, or coil valve is malfunctioning ZN520 Unit Controller Installation, Operation, and Maintenance (CNT-SVX04*-EN) for more information concerning Tracer controls.
Page 84: Symbio™ 400-B
Reset room sensor temperature. Clogged filter Replace filter. Replace malfunctioning component, or contact the controls contractor, or if Trane controls, see Tracer® Face-and-bypass damper, or coil valve is malfunctioning ZN520 Unit Controller Installation, Operation, and Maintenance (CNT-SVX04*-EN) for more information Room too cool concerning Tracer controls.
Page 85: Controller Diagnostics
Diagnostics and Troubleshooting overriding the Reset Diagnostic Request (bv/2) on the another diagnostic of this type occurs again within 24 hours Binary Status tab. after an automatic clearing, clear the diagnostic manually by using any of the ways listed under the preceding •...
Page 86: Troubleshooting
Diagnostics and Troubleshooting Table 22. Symbio 400-B controller diagnostics (continued) Diagnostic Consequences Diagnostic Type Probable Cause • Fan Unaffected Invalid or missing value for outdoor air • Valves Unaffected Outdoor air temp failure Automatic temperature. • Outdoor air damper Minimum Position •...
Page 87 Diagnostics and Troubleshooting Table 23. Fan does not energize (continued) Diagnostic present Several diagnostics affect fan operation. For detailed information about these diagnostics, refer to “Controller Diagnostics,” p. 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 fans may not work correctly.
Page 88 Diagnostics and Troubleshooting Table 25. Valves remain open (continued) Probable Cause Explanation Entering water The controller includes entering water temperature sampling logic, which is automatically initiated during 2-pipe and 4-pipe temperature changeover, if the entering water temperature is either too cool or too hot for the desired heating or cooling. sampling logic Valve configuration Ensure the valves are correctly configured, using the Tracer®...
Page 89: Troubleshooting (Wireless Controls)
Diagnostics and Troubleshooting Table 27. Outdoor air damper remains closed (continued) Explanation Probable Cause The controller must be properly configured based on the actual installed end devices and application. If Unit configuration the unit configuration does not match the actual end device, the outdoor air damper may not work correctly.
Page 90: Sensor Diagnostics
Diagnostics and Troubleshooting Sensor Diagnostics Figure 64. WZS showing LED locations and test button LED1, LED2, and LED3, located on the WZS respond to diagnostics by exhibiting specific blinking patterns. View their response by pressing the Test button. Error codes appear on the WDS when diagnostics occur.
Page 91: Receiver Diagnostics
Diagnostics and Troubleshooting Table 29. Diagnostics for wireless zone sensors and error code shown on wireless display sensor Error code shown on LED state when Test button is pressed on WZS Indicates... Sensor failure E0, E5, E7 Replace sensor LED1: Off Disassociated LED2: Off Sensor is not associated with a receiver.
Page 92: Testing Battery Status
Diagnostics and Troubleshooting Table 31. Observing signal strength on the wireless zone sensor LED state (WZS sensors) Symbol displayed on WDS User action Indicates LED1: Off Normal state No Test symbols appear None LED2: Off No Test button press. LED3: Off Associated;...
Page 93: 24 V Power Status Indicator
Press Test 50 percent battery life left. already installed. Replacement batteries are available at button Trane Service Parts Centers (Part number: X13770035010) or other local suppliers. Battery Life 25 percent battery life left. Replace Battery life is five years under normal conditions. If the batteries.
Page 94: Manual Association
Diagnostics and Troubleshooting Battery Installation and the battery life “Testing Battery Status,” p. 92) are adequate for proper functioning. WARNING Disassociation Risk of Injury with Batteries! Failure to follow handling instructions below could The receiver disassociates from the sensor (by removing result in severe injury.
Page 95: Output Power Level
Diagnostics and Troubleshooting Servicing and Testing Tools 1. Verify that the receiver is powered. No special tools or software are necessary to service and 2. Set the receiver address to 000 to force the zone test the wireless sensor system. Test the system by using: temperature output and zone temperature setpoint output to their default mode values (see “Output Values...
Page 96: Measuring Output Resistance
For variable frequency drives 80°F (26.7°C) 9.3 KΩ 305 Ω or other energy storing components provided by Trane or others, refer to the appropriate 85°F (29.4°C) 8.25 KΩ 208 Ω manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with a CAT III or IV b.
Page 97: General Information
Changeover coil operation. Notes: Troubleshooting Information • The new Trane BLDC system is a closed loop General System Troubleshooting Tips system that has equipment protections and envelope enforcements. Do not assume that • ECM engine configuration must perfectly match the the motor has failed without first consulting the factory-supplied ECM.
Page 98 Diagnostics and Troubleshooting Table 38. Motor does not spin, spins too slowly Situation Probable Cause Solution • Remove obstruction from the fan wheel. • Ensure that motor plugs and all plugs to adapter boards and the ECM engine board are secure. Motor has been locked out Motor 1 has an obstruction.
Page 99: Replacing Ecm Components
Failure to follow instructions below could result in or other energy storing components provided by death or serious injury. Trane or others, refer to the appropriate Disconnect unit power prior to making or removing manufacturer’s literature for allowable waiting periods motor or adapter board connections.
Page 100: Circuit Modules Replacement
The ECM engine board is pre-configured with safe values, but will NOT work correctly unless properly configured. • Only genuine Trane® replacement components with identical Trane part numbers should be used. • Unit fan assemblies contain concealed wires Depress latch to...
Page 101: Softsetting The Imc Address Of An Ecm Engine Module
Diagnostics and Troubleshooting or standard adapter boards, confirm that the green wire 5. Verify that the CSTI adapter board switches are set is attached to the engine board white connector as correctly, as indicated on the attached unit schematic shown below. (where applicable).
Page 102 Diagnostics and Troubleshooting Figure 70. Controller Status screen Notice one ECM type is configured at address 99, but no ECM is found at that address. Also, notice that another ECM has been found with an address of 0. When this situation occurs, Tracer TU displays a Softset…...
Page 103 Diagnostics and Troubleshooting Figure 72. Engine module on the ECM engine board 3. Once the light has been activated, click OK on the Softset Rotary Address - Expansion Module dialog box shown in When you click OK, Tracer TU softsets the engine module IMC address to 99 and the light on the module will turn off.
Page 104: Accessories
A positive air and moisture and V6 are flanged. seal should be provided around all edges. General Instructions Trane wallboxes are illustrated below. Each lists the wall openings required for wallboxes. Figure 74. Horizontal louver wallbox (H1 and H2) dimensions UV-SVX007A-EN...
Page 105 Accessories Figure 75. Vertical louver wallbox (V1, V3, V2, and V6) dimensions UV-SVX007A-EN...
Page 106: Installation In Masonry Walls
Accessories Installation in Masonry Walls Figure 76. Wallbox installation in masonry wall A typical method of installing the wallbox in a masonry wall Interior Wall opening is illustrated below. w/ sheetrock Grout the top and bottom of the wallbox frame as noted. A sloped water dam located in the space between the unit Outside and wall facilitates moisture drainage.
Page 107 Accessories Figure 77. Flanged wallbox installation in 2-in. wall Interior Wall w/ sheetrock Outside Wall Unit Caulking Rubber Seals Flanged wallbox Weep Holes Water dam sloped toward exterior UV-SVX007A-EN...
Page 108: Wiring Diagrams
Wiring Diagrams Table 40. Wiring diagram matrix Description Number Power Power Schematic, HUV - Symbio™ 400-B Without Electric Heat 2311-4198 2311-4276 Power Schematic, HUV - CSTI Without Electric Heat Power Schematic, HUV - Symbio™ 400-B With Electric Heat 4619-4482 Power Schematic, HUV - CSTI With Electric Heat 4619-4483 Controls Controls Schematic, HUV - Symbio™...
Page 109 Notes UV-SVX007A-EN...
Page 110 Notes UV-SVX007A-EN...
Page 111 Notes UV-SVX007A-EN...
Page 112 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

This manual is also suitable for:

Huv100 Huv125 Huv150 Huv200

Trane HUV075 Installation, Operation And Maintenance Manual

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