Trane Voyager CV Installation And Maintenance Manual
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Trane Voyager CV Installation And Maintenance Manual

27.5 to 50 ton 60 hz 22.9 to 41.7 ton 50 hz cv, vav, or sz vav rooftop air conditioners with reliatel controls, r-410a refrigerant
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Installation, Operation,
and Maintenance
Voyager™ Commercial
27.5 to 50 Ton 60 Hz
22.9 to 41.7 Ton 50 Hz
CV, VAV, or SZ VAV Rooftop Air Conditioners
with ReliaTel™ Controls, R-410A Refrigerant
Model Numbers
"B" and later design sequence
TC*, TE*, YC*330B, 360B, 420B, 480B, 600B (60 Hz/3 phase)
TC*, TE*, YC*275B, 305B, 350B, 400B, 500B (50 Hz/3 phase)
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.
August 2012
SAFETY WARNING
RT-SVX34F-EN

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Summary of Contents for Trane Voyager CV

  • Page 1 Installation, Operation, and Maintenance Voyager™ Commercial 27.5 to 50 Ton 60 Hz 22.9 to 41.7 Ton 50 Hz CV, VAV, or SZ VAV Rooftop Air Conditioners with ReliaTel™ Controls, R-410A Refrigerant Model Numbers “B” and later design sequence TC*, TE*, YC*330B, 360B, 420B, 480B, 600B (60 Hz/3 phase) TC*, TE*, YC*275B, 305B, 350B, 400B, 500B (50 Hz/3 phase) SAFETY WARNING Only qualified personnel should install and service the equipment.

  • Page 2: Overview Of Manual

    NEC and your local/state electrical codes. Failure to (HCFCs). Not all refrigerants containing these compounds follow code could result in death or serious injury. have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants- Overview of Manual including industry replacements for CFCs such as HCFCs and HFCs.
  • Page 3 Warnings, Cautions and Notices By carefully reviewing the information within this manual and following the instructions, the risk of improper operation and/or component damage will be minimized. It is important that periodic maintenance be performed to help assure trouble free operation. A maintenance schedule is provided at the end of this manual.

  • Page 4: Table Of Contents

    Unit Inspection ..... 12 TCI - Trane Communication Interface (Option- Storage ......12 al) .
  • Page 5 Table of Contents Variable Air Volume Applications (Traditional Condenser Fan Sequencing Control ..52 VAV) ....... . 47 Preparing the Unit for Operation .
  • Page 6 Table of Contents Economizer Operation Based on Reference Electrical Phasing ....102 Enthalpy ......90 Precision Suction Restrictor .

  • Page 7: Model Number Description

    Model Number Description 60 Hz Description Note: The following digits apply to TE Digit 15 — Fresh Air Selection units only. No Fresh Air 36 kW (27 kW for 208v) 0-25% Manual Damper Digit 1, 2 — Unit Function 54 kW (41 kW for 208v) 0-100% Economizer, Dry Bulb...
  • Page 8 Tons Voltage 54 72 90 108 Field-Powered 15A GFI Convenience Outlet 27½ Digit 22 to 35 Trane Communication Interface (TCI) Digit 23 Ventilation Override Digit 24 Hinged Service Access Digit 25 5. The service digit for each model Tool-less Condenser Hail Guards number contains 32 digits;...

  • Page 9: 50 Hz Description

    Digit 15 – Fresh Air Selection 380/50/3 Convenience Outlet 415/50/3 No Fresh Air Digit 22 0-25% Manual Damper Digit 9 – Heating Capacity Trane Communication 0-100% Economizer, Dry Bulb No Heat (TC only) Interface (TCI) Control Low Heat (YC only) 0-100% Economizer, Digit 23 High Heat (YC only) Reference Enthalpy Control...
  • Page 10 Model Number Description Digit 30-31 — Miscellaneous Options Discharge Temperature Sensor Clogged Filter Switch Digit 32 — Dehumidification Option Modulating Hot Gas Reheat Model Number Notes All voltages are across-the-line starting only. 2. Option includes Liquid, Discharge, Suction Valves. 3. Supply air fan drives A thru G are used with 22.9-29.2 ton (82-105 kW) units only and drives H through N are used with 33.3 and 41.7 ton (120-148...

  • Page 11: General Information

    = Static Pressure Transducer LCI-R = LonTalk Communication Interface with ReliaTel SZVAV = Single Zone Variable Air Volume = Left Hand = Trane Communication Interface = Mixed Air Sensor = Temperature Cutout = Mixed Air Temperature = Temperature Discharge Limit...

  • Page 12: Precautionary Measures

    An optional roof curb, specifically designed for the Voyager “Startup, ” p. commercial rooftop units is available from Trane. The roof Trane will not assume responsibility for equipment curb kit must be field assembled and installed according to damage resulting from accumulation of condensate on the the latest edition of the curb installation guide.

  • Page 13: Unit Dimensions And Weights

    Step-by-step instructions for the curb assembly and installation with curb dimensions and curb configuration for “A” , “B” , and “C” cabinets ship with each Trane accessory roof curb kit. (See the latest edition of the curb installation guide) Follow the instructions carefully to assure proper fit when the unit is set into place.
  • Page 14 Unit Dimensions and Weights Figure 2. Rear view showing duct openings for horizontal supply and return, 60 Hz 27½-35, 50 Hz 23-29 Tons (TCH, TEH, YCH low heat) 1 1/4 3 1/4 (32) (81) Notes: • For combination of horizontal and downflow openings (digit 3 = F or R) see Figure 1, p.
  • Page 15 Unit Dimensions and Weights Figure 4. 60 Hz 27½-35, 50 Hz 23-29 Tons (YD high heat) Figure 5. Duct openings, 60 Hz 27½-35, 50 Hz 23-29 Tons (YH high heat) 1 1/4 3 1/4 (32) (81) Notes: • On horizontal units, the VFD is located between the supply and return ductwork, which makes access limited.
  • Page 16 Unit Dimensions and Weights Figure 6. 60 Hz 27½-35, 50 Hz 23-29 Tons (YC high heat) 90 5/8" NOTES: 2301.8mm 1. SEE ROOFCURB DRAWING FOR DETAILS ON FIELD DUCT FITUP AND CONNECTIONS 2. SEE DETAIL HOOD DRAWING FOR HORIZONTAL / DOWNFLOW UNITS FOR ADDITIONAL DIMENSION 208 1/16"...
  • Page 17 Unit Dimensions and Weights Figure 8. Duct openings, 60 Hz 40-50, 50 Hz 33-42 Tons (TH, TH, YH low and high heat) 1 1/4 3 1/4 (32) (81) Notes: • For combination of horizontal and downflow openings (digit 3 = F or R) see Figure 7, p.
  • Page 18 Unit Dimensions and Weights Figure 10. Fresh air and power exhaust dimensions for TC*, TE*, and YC* units Figure 11. Location of “Ship With” items for TC*, TE*, and YC* units RT-SVX34F-EN...

  • Page 19: Unit Rigging And Placement

    Unit Dimensions and Weights Unit Rigging and Placement Table 1. Minimum operating clearances installation (horizontal, downflow, and mixed airflow configurations) WARNING Recommended Clearances Heavy Objects! Condenser Coil Ensure that all the lifting equipment used is properly Economizer/ Orientation Service Side rated for the weight of the unit being lifted.
  • Page 20 Unit Dimensions and Weights Table 5. Point loading average weight — lbs./kg Table 4. Approximate units operating weights — lbs./ Model **D330/275 846 384 688 313 743 337 745 338 604 275 503 228 Basic Unit Weights **H330/275 867 393 707 321 767 348 753 342 613 279 513 233 Unit **D360/305 836 379 680 309 779 353 741 336 621 285 568 258 Model...

  • Page 21: Installation General Requirements

    Installation General Requirements Condensate Drain Connection 4. Remove the dust cap from the tubing connector located below the sensor in the vertical support. Each commercial rooftop unit is equipped with one (1) 1- 5. Attach one end of the 50' x 3/16” O.D. factory provided 1/4 inch Female PVC condensate drain connection.
  • Page 22 Installation General Requirements Figure 16. Statitrac transducer assembly Static Reference Tubing Connects Here (O/A Sensor) Space Pressure Sensing Tube Space Pressure Connects Here Transducer Space Pressure Calibration Solenoid Space Pressure Transducer Sensing Tube to Space LO HI Pressure Sensing Tube to Outside Air Reference RT-SVX34F-EN...

  • Page 23: Installation Electrical

    Installation Electrical Disconnect Switch External Note: All field installed wiring must conform to NEC guidelines as well as State and Local codes. Handle (Factory Mounted Option) Verify that the power supply available is compatible with the unit's name plate ratings for all components. The Units ordered with the factory mounted disconnect switch available power supply must be within 10% of the rated come equipped with an externally mounted handle.

  • Page 24: Through-The-Base Electrical (Optional Accessory)

    Installation Electrical Through-the-Base Electrical (Optional or the factory mounted nonfused disconnect switch inside the unit control panel. Accessory) Note: When the factory installed through-the-base Liquid-tight conduit couplings are secured to the base of option is not used, the installing contractor is the unit for both power and control wiring.
  • Page 25 Installation Electrical Table 7. 27½-50 ton electrical service sizing data—60Hz Fan Motors Compressor Supply Condenser Exhaust Allowable 50% 100% Electrical Voltage Model Characteristics Range No/Ton RLA (Ea.) LRA (Ea.) FLA No HP (Ea.) (Ea.) 22.2 1/12,1/ 208/60/3 187-229 44.0/50.5 304/315 10.0 29.5 18.8...
  • Page 26 Installation Electrical Table 9. Electrical service sizing data — crankcase Table 8. Electrical service sizing data — electric heat heaters (heating mode only) — 60Hz module (electric heat only) — 60 Hz FLA Add Unit Voltage Nominal Models: TE(D,H,F,R) 330—600 Electric Heat FLA Unit Size (Tons) KW Heater 27½...

  • Page 27: Electrical Wire Sizing And Protection Device Equations

    Installation Electrical Calculation #1 - TC*, YC*-27.5 to 50 Ton Units Table 11. Electrical service sizing data – electric heat MCA = (1.25 x Load 1) + Load 2 + Load 4 module (electric heat units only)—50Hz MOP = (2.25 x Load 1) + Load 2 + Load 4 (See Note 1) Models: TE(D,H,F,R) 275 through 500 Electric Heat FLA RDE = (1.5 x Load 1) + Load 2 + Load 4 (See Note 2) Nominal...

  • Page 28: Low Voltage Wiring

    Installation Electrical Disconnect Switch Sizing (DSS) Field Installed AC Control Wiring Calculation A. - YC*, TC*, and TE* Units: WARNING DSS = 1.15 X (LOAD1 + LOAD2 + LOAD4) For TE* units, use calculations A and B. Proper Field Wiring and Grounding Required! Calculation B.

  • Page 29: Field Installed Dc Control Wiring

    386-610 feet 16 gauge 611-970 feet 14 gauge Units equipped with the Trane Communication Interface (TCI) option, which utilizes a serial communication link; • Must be 18 AWG shielded twisted pair cable Belden 8760 or equivalent). • Must not exceed 5,000 feet maximum for each link.
  • Page 30 Installation Electrical Figure 19. Typical field wiring requirements for CV and SZ VAV control options RTRM J7 Thermostat Inputs N/A for SZ VAV LTB6 Space Humidity Sensor Space Humidistat RT-SVX34F-EN...
  • Page 31 Installation Electrical Figure 20. Typical field wiring requirements for traditional VAV control options LTB6 Customer Changeover for VAV Htg (MOD GAS ONLY *VAV Mode input: RTRM J6-2 to RTRM J6-4 If the unit does not have a Mode (Off, Auto) input from another source, the following default applies: Short from J6-2 to J6-4 = AUTO mode, Open from J6-2 to J6-4 = OFF mode.

  • Page 32: Remote Panels And Sensors

    Installation Electrical Remote Panels and Sensors Figure 23. Zone panel (BAYSENS108*) Constant Volume and Single Zone VAV Control Options The RTRM must have a zone sensor or conventional thermostat (CV only) to operate the rooftop unit. If using a zone sensor, mode capability depends upon the type of sensor and/or remote panel selected to interface with the RTRM.
  • Page 33 This electronic sensor features single setpoint capability sensing, supply air temperature sensing, remote and timed override with override cancellation. It is used temperature sensing (uncovered), and for VAV zone reset. with a Trane Integrated Comfort building management Wiring procedures vary according to the particular system.
  • Page 34 Installation Electrical Remote Zone Sensor (BAYSENS077*) High Temperature Sensor (BAYFRST003*) This electronic sensor can be used with BAYSENS106*, Provides high limit “shutdown” of the unit. 108*, 110*, 119*, or 021* Remote Panels. When this sensor The sensor is used to detect high temperatures due to fire is wired to a BAYSENS119* Remote Panel, wiring must be in the air conditioning or ventilation ducts.
  • Page 35 Installation Electrical Space Temperature Averaging Space temperature averaging is accomplished by wiring a number of remote sensors in a series/parallel circuit. The fewest number of sensors required to accomplish space temperature averaging is four. Example #1 illustrates two series circuits with two sensors in each circuit wired in parallel.

  • Page 36: Installation Piping

    Installation Piping General Requirements 5. Install a pressure regulator at the unit that is adequate to maintain 6" w.c. for natural gas and 11" w.c. for LP gas while the unit is operating in the “High Heat” All internal gas piping for YC* rooftop units are factory mode.
  • Page 37 Installation Piping Table 18. Sizing natural gas pipe mains and branches Gas Input (Cubic Feet/Hour)* Gas Supply Pipe Run (ft) 1-1/4” Pipe 1-1/2” Pipe 2" Pipe 2-1/2” Pipe 3"Pipe 4"Pipe 1050 1600 3050 4800 8500 17500 1100 2100 3300 5900 12000 1650 2700...

  • Page 38: Startup

    Startup Unit Control Modules Figure 34. RTAM module RTRM - ReliaTel Refrigeration Module The RTRM is the main information receiving module. It interprets the information received from all other unit modules, sensors, remote panels, customer binary contacts and responds by activating the various unit components to satisfy the applicable request for economizing, cooling, heating, exhaust, ventilation.

  • Page 39: Conventional Thermostat Connections (Available Only With Cv)

    It allows the For constant volume (CV) units with modulating gas heat control and monitoring of the system through a Trane using a conventional thermostat or for Single Zone VAV Tracer™ panel. The module can be ordered from the units with modulating gas heat, the Discharge Air SP on factory or ordered as a kit to be field installed.

  • Page 40: Lci - Lontalk® Communication Interface (Optional)

    The supply fan is activated from the G terminal and will a Trane Tracer SC panel or 3rd party BACnet system. The cycle with a call for heat or cooling if in the “Auto” mode.

  • Page 41: Economizer Operation With Cv Controls

    Startup sequences for each system in heating and cooling. The Cooling Setpoint = 70°F RTRM provides different timing sequences for Gas The control temperature for the economizer will be 1.5°F Heat units and Cooling only units. above the heating setpoint 4.

  • Page 42: Mechanical Cooling Without An Economizer (Cv And Sz Vav)

    Startup Mechanical Cooling without an Supply Fan (CV and SZ VAV) Economizer (CV and SZ VAV) When the Fan Selection Switch is in the “AUTO” position and a call for cooling is initiated, the supply fan will delay Mechanical cooling is used to maintain the zone starting for approximately one second on traditional CV temperature.

  • Page 43: Variable Air Volume Applications (Single Zone Vav)

    Startup CV Units with Modulating Heat again. Normal Auto-Changeover requirements will be in control to allow the unit to transition into Active Cool On units with Modulating Gas Heat, Supply Air Tempering mode. is inherent to the Modulating Heat design and does not require any additional configuration/enabling.

  • Page 44: Setpoint Arbitration

    Startup predetermined time at the previous unit function's Table 22. DA heat setpoint minimum speed. All other cases which would bring the 0.68 1.41 1.93 2.28 Supply Fan ON will function as on non-Single Zone VAV 0.72 1.43 1.95 2.29 units.
  • Page 45 Startup Position Target setpoints based on the supply fan speed 1 (Fan ON) or Step 2 (Economizer Open) and make the and space CO2 requirements. proper adjustments. This new scheme will require the setting of 5 OA Damper 2. To set the Design Minimum Position setpoint at Middle position setpoints;...

  • Page 46: Space Pressure Control

    Startup Controlled Ventilation, if the Design Minimum Position at The Exhaust Enable Target could be above or below the Middle fan speed command is set to a point that would be Active Bldg Design OA Min Position Target Setpoint based higher than the calculated linear line between the Design on the Active Exhaust Enable Setpoint being set above or Minimum Position setpoints at Minimum and Maximum...

  • Page 47: Variable Air Volume Applications (Traditional Vav)

    Startup Zone Temperature Control without a  compressor output control. Also, as on Traditional VAV units, mechanical cooling will be inhibited if economizing Night Setback Panel or ICS - Unoccupied is enabled until the economizer has been full open for 3 Cooling minutes.

  • Page 48: Supply Duct Static Pressure Control

    Startup is switched from the “Heat” Mode or enters an supply air temperature will equal the maximum amount of Unoccupied status. reset selected. The four DIP switch configurations are as follows: Note: When a LCI is installed on a VAV unit, the MWU setpoint located on the RTAM board is ignored.

  • Page 49: Constant Volume Or Variable Air Volume Applications (Single Zone Or Traditional)

    Startup Constant Volume or Variable Air Table 24. Economizer effectiveness Volume Applications (Single Zone Method used to determine economizer or Traditional) effectiveness Required Comparative Enthalpy OAT, OAH, RAT, RAH Off Mode Reference Enthalpy OAT, OAH This mode is set at the zone sensor or by ICS. During this Reference Dry Bulb status, no heating, ventilation, or mechanical cooling is Unable to determine...

  • Page 50: Electric Heat Control

    Startup VAV with modulating heat, the fan will be energized with If more than one mode is requested at the same time, the the call for heating in order to begin circulating airflow Pressurize request will have priority followed by Purge. through the unit for discharge air temperature control.

  • Page 51: Low Pressure Control

    Startup Low Pressure Control For SZ VAV units the default power exhaust enable setpoint will be 25% as on non-SZ VAV units. However, for This input incorporates the low pressure cutout of each SZ VAV the Exhaust Enable Setpoint will need to be refrigeration circuit and can be activated by opening a field adjusted for the proper setpoint during the maximum Fan supplied contact.

  • Page 52: Power Exhaust Control (Tracking)

    Startup Coil Frost Protection Figure 45. Transducer voltage output vs. pressure input for The Frostat™ control monitors the suction line building pressure temperature to prevent the evaporator from freezing due to low operating temperatures whenever there is a -0.75 to 9.0 Iwc Pressure Transducer Voltage Output vs. Pressure Input demand for cooling.

  • Page 53: Preparing The Unit For Operation

    Startup Table 28. Condenser fan/compressor sequence Figure 46. Condenser fan location Compressor Staging Condenser Fan Temp. Sequence Output (°F) Unit Size Output Output Fans (Ton) Step 1 Step2 Step 3 “Off” Fan #2 CPR 1* Fan #3 27.5 - Fan #2 CPR 1, 2 Fan #3 Fan #2...

  • Page 54: Electrical Phasing

    Startup Electrical Phasing • Observe the ABC and CBA phase indicator lights on the face of the sequencer. The ABC indicator light will glow Unlike traditional reciprocating compressors, scroll if the phase is ABC. If the CBA indicator light glows, compressors are phase sensitive.

  • Page 55: Starting The Unit

    Startup Starting the Unit shorting across the two test terminals for two to three seconds. Before closing the main power disconnect switch, insure For the initial startup of either a Constant Volume or that the “System” selection switch is in the “Off” position Variable Air Volume (Single Zone or Traditional) unit, and the “Fan”...
  • Page 56 Startup Table 31. Test mode states for traditional VAV units with modulating dehumidification and staged heat TEST COMP COMP HEAT HEAT COOL REHEAT STEP MODE FAN VFD COMMAND ECON PUMPOUT VALVE VALVE VFD SIGNAL 100% 100% (10VDC) CLOSED 100% VFD SIGNAL 0% 0% (0 VDC) CLOSED 100%...
  • Page 57 Startup Table 33. Test mode states for SZ VAV units with modulating dehumidification and staged heat TEST COMP COMP HEAT HEAT COOL REHEAT STEP MODE VFD COMMAND ECON PUMPOUT VALVE VALVE FAN ON 58% (0 VDC) 100% ECONOMIZER 58% (0 VDC) OPEN 100% COOL 1...
  • Page 58 Startup Table 35. Test mode states for CV units with modulating dehumidification and modulating heat TEST HEAT COOL REHEAT STEP MODE ECON COMP 1 COMP 2 OUTPUT PUMPOUT VALVE VALVE VAV BOX FAN ON 100% ECONOMIZER OPEN 100% COOL 1 IN-CONTROL 100% COOL 2...

  • Page 59: Verifying Proper Fan Rotation

    Startup Verifying Proper Fan Rotation CV applications - Measure the amperage at the supply fan contactor and compare it with the full load amp (FLA) rating stamped on the motor nameplate. WARNING VFD's - With the O/A dampers fully closed, read the amperage displayed on the VFD screen and compare it Rotating Components! to the motor nameplate.
  • Page 60 Startup Table 37. Supply fan performance—27½-35 Ton—60 Hz Total Static Pressure (in. wg) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 CFM Std. RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM 8000 1.17 1.62 2.09...
  • Page 61 Startup Table 38. Supply fan performance—40 and 50 Ton—60 Hz Total Static Pressure (in. wg) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 CFM Std. RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM 12000 2.29 2.86...
  • Page 62 Startup Figure 47. Supply fan performance curves 27.5 - 35 ton — 60Hz Supply Fan Performance 27-35T 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 24000 26000 Volumetric Airflow Rate(CFM) Figure 48. Supply fan performance curves 40 and 50 ton — 60Hz Supply Fan Performance 40 and 50 Ton 2000 4000...
  • Page 63 Startup — Table 39. Supply fan performance 22.9-29.1 ton (I-P) — 50 Hz Static Pressure (in. wg) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 6670 283 0.80 351 1.18...
  • Page 64 Startup — Table 40. Supply fan performance 82-105 kW (SI) — 50 Hz Static Pressure (Pascals) 62.9 124.1 186.2 248.3 310.4 372.5 434.6 496.7 558.8 (L/s) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) 3148 0.59 0.88...
  • Page 65 Startup — Table 41. Supply fan performance 33.3 and 41.7 Tons (I-P) — 50 Hz Static Pressure (in. wg) 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 9996 1.46 1.95 2.49 3.04 3.64 4.25 4.92 5.59 6.23 10829 1.78 2.30 2.87 3.44...
  • Page 66 Startup Figure 49. Supply fan performance — 22.9-29.2 Tons — 50Hz Supply Fan Performance (996) (872) (747) (623) (498) (374) (249) (125) (0.0) 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 24000 26000 Volumetric Airflow Rate(CFM) (.94) (1.89) (2.83) (3.78)
  • Page 67 Startup — Table 42. Supply fan performance 105-148 kW (SI) — 50 Hz Static Pressure (Pascals) 62.1 124.2 186.3 248.1 310.4 372.5 434.6 496.7 558.8 (L/s) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) 4717 1.09 1.46...
  • Page 68 Startup Table 43. TC*/YC* 300 - 600 MBH economizer (R/A) damper pressure drop — 60 Hz Unit Airflow Pressure Unit Airflow Pressure Unit Airflow Pressure Capacity (Cfm) Drop Capacity (Cfm) Drop Capacity (Cfm) Drop 8000 0.035 9000 0.042 10000 0.051 8000 0.035 9000...
  • Page 69 Startup Table 44. Component static pressure drops (in. W.G.) — 60 Hz Heating System Filters Gas Heat Electric Heat ID Coil Throw-away MERV 8 High Eff. MERV14 High Eff Nominal Tons Std Air Low High Element Element 2" 2" 4" 4"...
  • Page 70 Startup Table 46. Component static pressure drops in. wg (I-P) — 50 Hz Heating System Filters Throw- MERV14 Gas Heat Electric Heat ID Coil away MERV 8 High Eff. High Eff Nominal Std Tons (kW) Std Air High Element Element 2”...
  • Page 71 Startup Table 47. Component static pressure drops Pa (SI) — 50 Hz Heating System Filters Throw- MERV 8 High MERV14 Gas Heat Electric Heat ID Coil away Eff. High Eff Nominal Std Tons (kW) Std Air High Element Element Adder 50 mm 100 mm Economizer 3150 3540...

  • Page 72: Exhaust Fan Operation

    Startup Table 48. Supply air fan drive selections — 50 Hz WARNING 7.5 hp (5.6 10 hp (7.5 15 hp (10 20 hp (15 Rotating Components! Nominal The following procedure involves working with live and Tons Drive Drive Drive Drive exposed rotating components.
  • Page 73 Startup Note: To adjust the damper blade stops, refer to figures Table 52. Power exhaust fan performance — 33.3 - 41.7 Figure 51, p. 73 Figure 54, p. 74 Ton — 50 Hz If the fan speed needs to be changed from the current Power Exhaust Selection operating speed, refer to the unit wiring diagram and the 50% (min)

  • Page 74: Economizer Damper Adjustment

    Startup 2. Enter the calculated CFM from the previous section Figure 53. (Upflow) Standard exhaust maximum “Verifying Proper Airflow” Table 43, p. 68 to obtain the damper position return air damper pressure drop. 3. Add the measured return duct static pressure and the return air damper pressure drop together to obtain the Total Return Static Pressure.

  • Page 75: Manual Fresh Air Damper

    Startup Table 55. 40 - 50 Ton downflow economizer (O/A) Figure 55. Economizer (O/A) damper assembly damper static pressure setup Return Air Duct Static + System Return Air Damper Static Design (Inches of Water) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 Drive Rod Position 12000...

  • Page 76: Starting The Compressor

    Startup Table 57. Damper adjustment Damper Opening (In.) Return Air Static Pressure - Inches w.c. Damper # 1 Damper # 2 -0.20 -0.40 -0.60 -0.80 -1.00 -1.20 -1.40 -1.60 1040 1120 1080 1330 1545 1730 1890 2035 2170 1185 1620 1990 2300 2575...

  • Page 77: Compressor Oil

    Startup Jump across the “Test Terminals” once again. This will Figure 58. Line weight locations — 40 Ton allow the second stage compressors to start. The first stage compressor will shut off providing the 3 minute “On” time has elapsed. Note: When the second refrigerant circuit is requested to operate, both compressors of the 50 ton unit will run simultaneously.
  • Page 78 Startup Table 58. 27.5 Ton — operating pressure (60Hz) TC, TE, YC* 33 0 FULL LOAD 7 00 6 50 6 00 5 50 115 F OD Ambient 5 00 105 F OD Ambient 4 50 95 F OD Ambient 4 00 85 F OD Ambient 3 50...
  • Page 79 Startup Table 60. 35 Ton — operating pressure (60 Hz) TC, TE, YC* 42 0 FULL LOAD 7 00 6 50 6 00 5 50 115 F OD Ambient 5 00 105 F OD Ambient 4 50 95 F OD Ambient 4 00 85 F OD Ambient 3 50...
  • Page 80 Startup Table 62. 40 Ton dual circuit — operating pressure (60 Hz) TC, TE , YC* 4 80 Circuit # 2 Full Load 7 00 6 50 6 00 5 50 115 F OD Ambient 5 00 105 F OD Ambient 4 50 95 F OD Ambient 4 00...
  • Page 81 Startup Table 64. 50 Ton dual circuit — operating pressures (60 Hz) TC, TE, Y C* 600 Circuit # 2 FULL LO AD 7 00 6 50 6 00 5 50 115 F OD Ambient 5 00 105 F OD Ambient 4 50 95 F OD Ambient 4 00...
  • Page 82 Startup Table 66. 25.4 Ton — operating pressure (50 Hz) TC, TE, YC* 30 5 FULL LOAD 7 00 6 50 6 00 5 50 115 F OD Ambient 5 00 105 F OD Ambient 4 50 95 F OD Ambient 4 00 85 F OD Ambient 3 50...
  • Page 83 Startup Table 68. 33.3 Ton dual circuit — operating pressure (50 Hz) TC, TE , YC* 4 00 Circuit # 1 Full Load 4 200 3 700 46.1 F OD Ambient 40.6 F OD Ambient 3 200 35.0 F OD Ambient 2 700 29.4 F OD Ambient 23.9 F OD Ambient...
  • Page 84 Startup Table 70. 41.7 Ton dual circuit — operating pressures (50 Hz) TC, TE , YC* 5 00 Circuit # 1 Full Load 4 200 3 700 46.1 F OD Ambient 40.6 F OD Ambient 3 200 35.0 F OD Ambient 2 700 29.4 F OD Ambient 23.9 F OD Ambient...

  • Page 85: Scroll Compressor Operational Noises

    This results in a “flutter” type sound. specific handling concerns with R-410A, please contact At Low Ambient Startup your local Trane representative. Failure to use R-410A rated service equipment or When the compressor starts up under low ambient components could result in equipment exploding under...

  • Page 86: Electric Heat Units

    Startup Electric Heat Units than the modulating can provide, the second bank is fired at full fire and the modulating bank again adjusts to the heating load present. Start the service test and check the amperage draw for each heating stage. Refer to the heater electrical data in Check both ignition systems (if applicable) when going Table 8, p.

  • Page 87: For Single Zone Variable Air Volume  Units

    Startup For Single Zone Variable Air Volume  Units Verify that the “Mode” selection switch and the “Zone Temperature” setpoints are set and/or programmed at the sensor modules. The RTOM has input setpoint potentiometers inside the control panel that are set at the factory which will allow the unit to operate and maintain system control.

  • Page 88: Pre-Installation

    NEC and your local/state electrical codes. Failure to follow code could result in death or serious injury. Voyager commercial rooftop units is available from Trane. The roof curb kit must be field assembled and (See Figure 18, “Typical field power wiring, ” on page 24.)

  • Page 89: Sequence Of Operation

    Sequence of Operation Mechanical Cooling Sequence  Table 25, p. 49 for the proper potentiometer setting for each temperature selection. Of Operation The economizer option allows cooling utilizing outdoor air when the temperature is below the specified dry bulb Time delays are built into the controls to increase setpoint (73°...

  • Page 90: Economizer Operation Based On Reference Enthalpy

    Sequence of Operation Economizer Operation Based on pressure. If the space pressure transducer fails, the unit will revert back to fresh air tracking control. Comparative Enthalpy Economizer Operation Based on Reference Comparative enthalpy is accomplished by using an Enthalpy outdoor humidity sensor (OHS), return humidity sensor (RHS), and the return air sensor (RAS).

  • Page 91: Gas Heat Sequence Of Operation

    Sequence of Operation During cooling operation, the cooling valve (CLV) will be 2. Switch the MODE switch on the zone sensor to “Off” open 100% and the reheat valve (RHV) will be closed which and then to the desired position (VAV units – remove will allow refrigerant to flow through the condenser coil and reapply the mode input).

  • Page 92: Variable Air Volume (Vav) Unit Fan Operation (Modulating Gas Heat Only)

    Sequence of Operation Variable Air Volume (VAV) Unit Fan Electric Heat Sequence Of Operation (Modulating Gas Heat Only) Operation During Changeover Heat (LTB5-1 shorted to LTB5-2), the Constant Volume (CV) unit will heat to the Supply Air Heating Setpoint +/- 7ºF . The VFD will modulate to maintain the Static Pressure When heat is required and the Fan selection switch is in the Setpoint.

  • Page 93: Occupied Heating Operation

    Sequence of Operation will be made based on the previous sections, however, the As the zone cooling demand continues to increase, if economizer control point will now be variable based on additional capacity is required, the supply fan output will the zone cooling demand.

  • Page 94: Unoccupied Cooling And  Heating Operation

    Sequence of Operation stages will be energized/de-energized to meet the Zone cooling with more than half the unit design mechanical Heating demand. Note that all Electric and Gas Heat cooling capacity and it has not been disabled due to the staging sequences will be identical to as on Constant Override limits described below, dehumidification mode Volume units.

  • Page 95: Failure And Overriding Conditions

    Sequence of Operation Purge Mode (Comfort and Dehumidification). be de-energized immediately and the Supply Fan will ramp up to 100%. Purge cycle operation will operate identically to Purge on 6. Heat Failure (High Temp. Limit Trip) - If a unit non-Single Zone VAV Dehumidification units;...

  • Page 96: Maintenance

    Maintenance Fan Belt Adjustment Note: The actual belt deflection force must not exceed the maximum value shown in Figure 61, p. The Supply Fan belts must be inspected periodically to 7. Recheck the new belt's tension at least twice during the assure proper unit operation.
  • Page 97 Maintenance Table 72. Deflection force Deflection Force (Lbs.) Steel Cable Gripnotch Belts Super Gripbelts Gripnotch Gripbelts 358 Gripbelts Belts Cross Small P.D Section Range Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 3.0 -3.6 4 1/2 3 7/8 5 1/2 3 1/4 —...

  • Page 98: Monthly Maintenance

    Maintenance Table 73. Supply fan sheave and belt (a)(b)(c) (c)(d) (c)(e) Fan Sheave Fan Bushing Motor Sheave Motor Bushing Tons Motor RPM Browning Browning Browning Browning Belt BX95  2B5V124 2B124SK B 1 11/16 SK 1 11/16 2BK40H 2BK40H H 1-3/8 H-1-3/8 Notched 10 hp...

  • Page 99: Heating Season

    Maintenance Make sure that all retaining screws are reinstalled in the • Inspect both the main unit control panel and heat unit access panels once these checks are complete. section control box for loose electrical components and terminal connections, as well as damaged wire With the unit running, check and record the: insulation.

  • Page 100: Coil Cleaning

    See Figure 62, p. 101 extension through the local Trane Parts Center. 4. When cleaning evaporator and reheat coils, mix the detergent with water according to the manufacturer’s instructions. If desired, heat the solution to 150° F maximum to improve its cleansing capability.

  • Page 101: Refrigeration System

    It is recommended that the initial refrigerant be or components with these units. For specific handling charged into the liquid line prior to starting the concerns with R-410A, please contact your local Trane compressor. This will minimize the potential damage representative....

  • Page 102: Compressor Replacements

    Maintenance test kits must be used for POE oil (OIL00079 for a quart Figure 63. Precision suction restrictor container or OIL00080 for a gallon container) to determine whether the oil is acid. If a motor burn out has occurred, change the oil in both compressors in a tandem set.
  • Page 103 Maintenance Table 77. Sample operator’s maintenance log (see note) Refrigerant Circuit #1 Refrigerant Circuit #2 Current Ambient Compr Suct. Disch. Liquid Compr. Suct. Disch. Liquid Temp. Press. Press. Press. Super- Sub- Press. Press. Press. Super- Sub- Date Level (Psig) (Psig) (Psig) heat (F) cool.(F)

  • Page 104: Diagnostics

    Diagnostics The RTRM has the ability to provide the service personnel 7. If no abnormal operating conditions appear in the test with some unit diagnostics and system status information. mode, exit the test mode by turning the power “Off” at the main power disconnect switch.

  • Page 105: Diagnostics (Cv And Sz Vav Units Only)

    Diagnostics What Outputs Mean: a mechanical ZSM to terminals RTRM J6-1 through J6-5. HEAT J6-7 Note: All units configured for SZ VAV will blink the Cool • On = system is actively heating indicator if there is a Zone Temp. input failure •...

  • Page 106: Resetting Cooling And Ignition Lockouts

    Diagnostics FAIL or SERVICE (or an appropriate combination) if a 3. Entering Evaporator Temperature Failure on units with diagnostic is present. modulating dehumidification. 4. RTDM Communication Failure on units with HEAT (YC only) modulating dehumidification. 1. TCO1, TCO2, or TCO3 has opened. Resetting Cooling and Ignition Lockouts 2.

  • Page 107: Rtrm Zone Sensor Module (Zsm) Tests

    Diagnostics If the “Fan Failure” switch opens for at least 40 seconds combinations are listed below with their corresponding during fan operation (indicating a fan failure) the unit will resistance values. stop. Table 80. Nominal resistance RTRM Zone Sensor Module (ZSM) Tests VAV System CV System CV Fan...

  • Page 108: Reliatel Refrigeration Module (Rtrm)

    Diagnostics every 0.5 seconds. The voltage on the low end will Table 82. Variable air volume default operation measure about 19 Vdc, while the voltage on the high end will measure from approximately 24 to 38 Vdc. Component or Function Default Operation 4.

  • Page 109: Reliatel Air Module (Rtam) Tests

    Diagnostics a. Measure the resistance of the sensor between the Note: If voltage is incorrect, verify RTAM DIP switch connector terminals P23-1 and P23-2. settings. b. Measure the temperature at the MAS location. 2. If voltage to the VFD is not present, verify that the wires Using the Temperature versus Resistance chart, are properly connected between the RTRM or COMM verify the accuracy of the MAF .

  • Page 110: Reliatel Air Module (Rtom) Tests

    Diagnostics 2. Using the procedure described in “Test Modes“ , p.55, jumper between +24V and the LI1 terminal is properly verify that the fan starts and the speed increases until connected. the SA Pressure reaches the “Setpoint” on VAV 5. Verify that 115 Vac is present from the transformer on Setpoint panel.

  • Page 111: Troubleshooting

    Diagnostics Troubleshooting Table 83. Troubleshooting SYMPTOM PROBABLE CAUSE RECOMMENDED ACTION 1. No power to the Unit. 1. Check line voltage at service disconnect. 2. No power to the RTRM. 2. Check for 24 VAC at RTRM J1-1 to system ground. 3.
  • Page 112 Diagnostics Table 83. Troubleshooting SYMPTOM PROBABLE CAUSE RECOMMENDED ACTION 1. OAS has failed. 1. Perform OAS Resistance/Temperature check. Replace if necessary. 2. ODM3 and/or 4 capacitor has failed. 2. Check ODM capacitor, replace if necessary. 3. Wiring, terminal, or CC2 contactor 3.
  • Page 113 Diagnostics Table 83. Troubleshooting SYMPTOM PROBABLE CAUSE RECOMMENDED ACTION N. No Heat (YC’s only) “Fan” System Status Failure Diagnostic. Place the unit in the Heating Test selection switch on the ZSM is Mode, steps 6 & 7 for constant volume or step 8 & 9 for variable air in the “AUTO”...
  • Page 114 Diagnostics Table 83. Troubleshooting SYMPTOM PROBABLE CAUSE RECOMMENDED ACTION 1. Check the return air sensor (RAS) at connector P10 by disconnecting P10 from RAT on the ECA. Check for resistance between P10-1 and P10- 1. Comparative enthalpy setup, RAS or 2, refer to the Resistance versus Temperature Chart.
  • Page 115 Diagnostics Table 84. Component failure mode COMPONENT FAILURE RESPONSE NORMAL RANGE DIAGNOSTIC If a sensor is used at RTRM J6-1 and J6-2, Cool HSP and CSP for CV or SZ VAV 1. Cannot control at ZSM, unit 100 to 900 Ohms approx. Use Failure Output at RTRM J6-8 to J6-6 “COOL”...

  • Page 116: Vfd Programming Parameters

    Should replacing the a VFD become necessary, the j. Press [Cancel] button to disregard change, or press replacement is not configured with all of Trane's operating [OK] to accept change and enter the new setting parameters. The VFD must be programmed before attempting to operate the unit.
  • Page 117 Diagnostics g. Ensure parameter 14-22 Operation Mode has reverted back to “Normal Operation” . Note: Steps 4 resets the drive to the default factory settings. The program parameters listed in Table 85, p. 116 will need to be verified or changed as described in item 2.

  • Page 118: Unit Wiring Diagram Numbers

    Unit Wiring Diagram Numbers Table 86. Wiring diagrams - TC/TE units Diagram Type of Airflow Schematic Type Voltage Number Description Power 208-575 2313-0601 All Units 208-575 2313-0610 All Units - Cooling Only 208-230 2313-0608 36kw and 54kw Electric Heat Heat Power and Constant Volume, Controls 2313-0607 36kw and 54kw Electric Heat...
  • Page 119 Unit Wiring Diagram Numbers Table 86. Wiring diagrams - TC/TE units 2313-0617 All Units without Statitrac Control Modules 208-575 2313-0619 All Units with Statitrac 2313-0654 27.5-35 ton, 36KW-54KW Electric Heat 2313-0656 40 ton, 54KW Electric Heat 2313-0658 50 ton, 54KW Electric Heat 208-230 2313-0694 27.5-35 ton, Cooling Only 2313-0695 40 ton, Cooling Only...
  • Page 120 Unit Wiring Diagram Numbers Table 87. Wiring diagrams - YC units Diagram Type of Airflow Schematic Type Voltage Number Description Power 208-575 2313-0601 All Units 2313-0700 Low Heat Gas Units 2313-0701 High Heat Gas Units Heat Power and Constant Volume, 208-575 Controls 2313-0605 Low Heat Modulating Gas Units...
  • Page 121 Unit Wiring Diagram Numbers Table 87. Wiring diagrams - YC units 2313-0617 All Units without Statitrac Control Modules 208-575 2313-0619 All Units with Statitrac 2313-0727 27.5-35 ton, 2 Stage Gas Heat 2313-0728 40 ton, 2 Stage Gas Heat 2313-0729 50 ton, 2 Stage Gas Heat 208-230 2313-0733 27.5-35 ton, Modulating Gas Heat 2313-0734 40 ton, Modulating Gas Heat...

  • Page 122: Warranty And Liability Clause

    HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. © 2012 Trane All rights reserved...

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