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Installation, Operation, and Maintenance
Packaged Rooftop Air Conditioners
Voyager™ – Cooling, Gas/Electric
12.5 to 25 Tons, 60/50Hz
Model Number:
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.
December 2021
YS*150–300
YH*150-300
SAFETY WARNING
RT-SVX26T-EN
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Table of Contents
Troubleshooting
Related Manuals for Trane Voyager YS 150G Series
Summary of Contents for Trane Voyager YS 150G Series
- Page 1 Installation, Operation, and Maintenance Packaged Rooftop Air Conditioners Voyager™ – Cooling, Gas/Electric 12.5 to 25 Tons, 60/50Hz Model Number: YS*150–300 YH*150-300 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.
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Page 2: Warnings, Cautions, And Notices
(Global Harmonized System of Classification and compounds have the same potential impact to the Labeling of Chemicals) guidelines for information on environment. Trane advocates the responsible handling of allowable personal exposure levels, proper all refrigerants-including industry replacements for CFCs respiratory protection and handling instructions. - Page 3 Copyright This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.
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Page 4: Table Of Contents
Table of Contents Model Number Description Two-Speed Indoor Fan (Title 24) Control ....5 . .46 Model Number Notes Single Zone Variable Air Volume (Single Zone . -
Page 5: Model Number Description
Digit 4, 5, 6 — Nominal Gross Single Zone Variable Air Volume Standard Motor Without Communications Options Cooling Capacity (MBh) Multi-Speed Standard Motor Trane Communications Interface 150 = 12½ Tons, 60Hz Single Zone Variable Air Volume Lontalk Communications 155 = 15 Tons, 50Hz... -
Page 6: Model Number Notes
Model Number Description Fan Failure Switch and Discharge 2. Requires ReliaTel Options 15. TCI is for use with non-VariTrac Air Sensing Module. systems and VariTrac systems. Clogged Filter Switch, Fan 3. Requires Economizer. 16. For use with multi-speed and Failure Switch and Discharge Air... -
Page 7: General Information
The RTRM is mounted in the control panel and is factory wireless communication between system controls, unit wired to the respective internal components. The RTRM controls, and wireless sensors for Trane control products receives and interprets information from other unit that use BACnet protocol. The WCI replaces the need for modules, sensors, remote panels, and customer binary communications wire in all system applications. -
Page 8: System Input Devices And Functions
General Information System Input Devices and Please note that on units equipped with factory installed MERV 13 filters, a clogged filter switch with different Functions pressure settings will be installed. This switch will close when the differential pressure is approximately 0.8” w.c. The RTRM must have a zone sensor or thermostat input in and open when the differential falls to 0.7”... -
Page 9: Sensors
This electronic sensor features single setpoint capability parallel with the FOS. and timed override with override cancellation. It is used with a Trane Integrated Comfort™ building management If this circuit is closed before the compressor is started, the system. compressor will not be allowed to operate. Anytime this... - Page 10 General Information The sensor is used to detect high temperatures due to fire Maintenance Instructions provided with the literature in the air conditioning or ventilation ducts. The sensor is package for this unit. designed to mount directly to the sheet metal duct. Each kit In order for the supply air smoke detector or return air contains two sensors.
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Page 11: Unit Inspection
General Information Precautionary Measures • USB port that enables the downloading of component runtime information as well as trended historical sensor data WARNING • Customized reports Fiberglass Wool! Unit Inspection Exposure to glass wool fibers without all necessary PPE equipment could result in cancer, respiratory, skin or As soon as the unit arrives at the job site: eye irritation, which could result in death or serious injury. -
Page 12: Unit Clearances
General Information Unit Clearances Figure 1, p. 13 illustrates the minimum operating and service clearances for either a single or multiple unit installation. These clearances are the minimum distances necessary to assure adequate serviceability, cataloged unit capacity, and peak operating efficiency. Providing less than the recommended clearances may result in condenser coil starvation, “short-circuiting”... -
Page 13: Unit Dimensions
Unit Dimensions Figure 1. Typical installation clearance for single and multiple unit applications 5' 8" 5' 0" RT-SVX26T-EN... - Page 14 Unit Dimensions Figure 2. Unit dimensional data for 12½ tons standard efficiency units DOWNFLOW CONDENSATE DRAIN CONN 1”(25MM) NPT 7/8”(22MM) DIA. HOLE (UNIT CONTROL WIRE) 1/2 NPT GAS CONNECTION 2”(51MM) DIA. HOLE (UNIT POWER WIRE) SERVICE GAUGE PORT ACCESS Note: ½ NPT Gas Connection Figure 3.
- Page 15 Unit Dimensions Figure 4. Horizontal duct dimensional data 12½ tons standard efficiency units CLEARANCE 48” CLEARANCE 60” 1219 MM 1524 MM FILTER ACCESS DOOR HORIZONTAL UNITS CLEARANCE 72” ONLY 1829 MM SUPPLY RETURN HORIZONTAL CONDENSATE DRAIN CONNECTION 1.0 IN. NPT CLEARANCE 38”...
- Page 16 Unit Dimensions Figure 6. Unit dimensional data 15–25 tons high efficiency units Note: ½ NPT Gas Connection Figure 7. Unit dimensional data 15–25 tons standard efficiency units, 12½–25 tons high efficiency units RT-SVX26T-EN...
- Page 17 Unit Dimensions Figure 8. Horizontal duct dimensional data 15–25 tons standard efficiency units, 12½–25 tons high efficiency units RT-SVX26T-EN...
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Page 18: Unit Weights
Unit Weights Table 1. Typical unit weights and point loading data (lb) Table 2. Typical unit weights and point loading data (kg) Corner Weights (lb) Corner Weights (kg) Unit Models Weights Unit Models Weights YS*150G 1448 YS*150G YH*150G 1971 YH*150G YH*150G YH*150G 2034... -
Page 19: Rigging
Unit Weights Rigging 7. Downflow units; align the base rail of the unit with the curb rail while lowering the unit onto the curb. Make sure that the gasket on the curb is not damaged while positioning the unit. WARNING Figure 10. -
Page 20: Installation
Installation Foundation When attaching the ductwork to the unit, provide a water- tight flexible connector at the unit to prevent operating sounds from transmitting through the ductwork. WARNING All outdoor ductwork between the unit and the structure should be weather proofed after installation is completed. Risk of Roof Collapsing! Note: For sound consideration, cut only the holes in the Failure to ensure proper structural roof support could... - Page 21 Installation • Ensure unit-to-curb seal is tight and without buckles or A condensate drain line must be connected to the P-Trap. cracks. Pitch the drain lines at least ½-inch for every 10 feet of horizontal run to assure proper condensate flow. Do not •...
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Page 22: Main Unit Power
Installation breaker, a field supplied disconnect switch must be Figure 12. Through the base electrical option installed at or near the unit in accordance with the National Electrical Code (NEC latest edition). Main Unit Power WARNING Proper Field Wiring and Grounding Required! Failure to follow code could result in death or serious injury. -
Page 23: Controls Using 24 Vac
Installation Controls using 24 Vac Table 4. Zone sensor module wiring Distance from Unit to Before installing any connecting wiring, refer to “Unit Control Recommended Wire Size Dimensions,” p. 13 for the electrical access locations 0–150 feet (0–45.7 m) 22 gauge (0.33 mm provided on the unit and Table 3, p. - Page 24 Installation Figure 15. ReliaTel relative humidity sensor (dehumidification option) Figure 16. ReliaTel humidistat (dehumidification option) RT-SVX26T-EN...
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Page 25: Control Box
Installation Figure 17. Typical field wiring diagrams for optional controls (ReliaTel only) BAYSENS075* BAYSENS075* BAYSENS108* BAYSENS106* BAYSENS110* BAYSENS119* BAYSENS073* BAYSENS074* BAYSENS075* ASYSTAT669A OPTIONAL REMOTE SENSOR CONTROL BOX RTRM TEST 1 TEST 2 RT-SVX26T-EN... -
Page 26: Space Temperature Averaging
Installation Space Temperature Averaging Space temperature averaging is accomplished by wiring a number of remote sensors in a series/parallel circuit. Using the BAYSENS016* or BAYSENS077*, at least four sensors are required to accomplish space temperature averaging. Example #1 illustrates two series circuits with two sensors in each circuit wired in parallel. - Page 27 Installation Table 6. Space temperature averaging examples RT-SVX26T-EN...
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Page 28: Hazardous Voltage
Installation Figure 19. Typical unit gas train configuration Table 7. Gas heater operating data Heating Input Rate—Btu/h 135,000 205,000 Minimum Supply Gas Pressure Natural/ 3.5” w.c./ 8.0” w.c. Manifold Gas Pressure -0.2” w.c Combustion Blower Suction Pressure (1 -2.1 to -3.1” -0.8 to -1.2”... - Page 29 Installation Each reading must fall within the utilization range stamped on the unit nameplate. If any of the readings do not fall WARNING within the proper tolerances, notify the power company to Hazardous Voltage! correct this situation before operating the unit. Failure to disconnect power before servicing could Excessive three phase voltage imbalance between phases result in death or serious injury.
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Page 30: Three Stage Cooling
Installation 4 Stages of Cooling (25 Tons) Each compressor can be equipped with a crankcase heater. The proper operation of the crankcase heater is 25 tons high efficiency units have 4 stages of cooling with important to maintain an elevated compressor oil a single compressor and tandem set (similar to variable temperature during the “Off”... -
Page 31: Factory-Mounted Unit Options
Factory-Mounted Unit Options Circuit Breaker (FIYUCB) and Unit disconnect switch or circuit breaker. Connect the power conductors to the lugs provided. Connect the Disconnect (FIYUDC) ground wire to the unit ground lug. Note: Wire size for the length of run should be determined using the circuit ampacity found on WARNING the unit nameplate and the N.E.C. -
Page 32: Powered And Unpowered Convenience
Factory-Mounted Unit Options Powered and Unpowered WARNING Convenience Proper Field Wiring and Grounding Required! WARNING Failure to follow code could result in death or serious injury. Hazardous Voltage w/Capacitors! All field wiring MUST be performed by qualified Failure to disconnect power and discharge capacitors personnel. -
Page 33: Return Air Smoke Detector
Factory-Mounted Unit Options Unpowered Convenience Outlet WARNING Unpowered Option (FIYCOUP) Hazardous Voltage w/Capacitors! 1. When the unpowered convenience outlet option is installed, remove the receptacle. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. 2. - Page 34 Factory-Mounted Unit Options Figure 23. Brackets Figure 24. Return air smoke detector for downflow units THREE PIECE HOOD PLASTIC ELBOW METAL INTAKE TUBE SMOKE DETECTOR COPPER TUBE (FACTORY INSTALLED) VINYL TUBES (7-3/4 INCHES LONG) VINYL TUBES (2 INCHES LONG) METAL EXHAUST TUBE (16.34 INCHES LONG) TUBES INSTALL FROM BOTTOM, TOP DOES NOT NEED TO BE...
- Page 35 Factory-Mounted Unit Options Note: In order to perform the last part of this operation, it procedures, including recommended intervals will be necessary to remove the barometric relief between filter changes and coil cleaning, is required. filter, open the barometric relief damper, and reach •...
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Page 36: Through The Base Gas Utility Option
Factory-Mounted Unit Options Through the Base Gas Utility WARNING Option Outlet Pressure Check Required! This section contains the instructions for making field This unit uses a negative pressure gas valve. At start- connections to the Through the Base Gas Utility Option. up, the outlet pressure should be checked and adjusted For gas piping, supply, and manifold pressure information if required to a negative -0.2 inches of water column. -
Page 37: Air-Fi™ Wireless Communication Interface (Wci)
Air-Fi™ Wireless Communication Figure 30. WCI mounting location - Y*D180-300 Interface (WCI) When installed, the Trane Air-Fi Wireless Communication Interface is located in the evaporator section, near the return air ductwork. The exact mounting location is dependent on the airflow configuration, cabinet size, and fresh air selection. -
Page 38: Pre Start
Pre Start Test Modes Verifying Proper Air Flow (Units with Belt Drive Indoor Fan) There are three methods in which the “Test” mode can be cycled at LTB-Test 1 and LTB-Test 2. Much of the systems performance and reliability is closely 1. - Page 39 Pre Start 7. To stop the SERVICE TEST, turn the main power disconnect switch to the “Off” position or proceed to the next component start-up procedure. Remove electro mechanical test mode connections (if applicable). RT-SVX26T-EN...
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Page 40: Start Up
Note: The Copeland, SSA and SPA scroll compressors for 5. To stop the SERVICE TEST, turn the main power R-410A units use Trane OIL00094. The correct oil for disconnect switch to the “Off” position or proceed to Trane CSHD is Trane OIL00079 or OIL00080. -
Page 41: Dehumidification Option
Start Up Heating Start-Up Table 14. POE Oil recharge amount (fl. oz.) Open the main disconnect switch to shut the unit off and Model 25mm/18mm 25mm/18mm to reset the RTRM. YS*150 Follow the Test Guide in Table 12, p. 38 to start the unit in YH*150 the heating mode. -
Page 42: Vhr Relay Output
Start Up pressure of 0.3" w.c. to 2.5" w.c. respectively with a Table 15. Variable air volume mode operation deadband adjustment range from 0.2" w.c. to 1.0" w.c. The System Mode Fan “Auto” Fan “On” setpoint is adjustable on the RTAM Static Pressure DWU or Setpoint potentiometer or through ICS. -
Page 43: Final System Set Up
Start Up Figure 36. RTAM module IGV - OFF OFF VFD - ON OFF OFF ON VAV w/o IGV ON ON Static Static pressure pressure No Reset OFF OFF setpoint deadband For remote deadband cut Return Air OFF ON this jumper Zone Temp ON OFF Outdoor Air ON ON Supply Air Heating... -
Page 44: Sequence Of Operation
Sequence of Operation The ReliaTel Controls is a microelectronic control feature, maintain the zone temperature to within ±2°F of the sensor which provides operating function that is significantly setpoint at the sensed location. different than conventional electro-mechanical units. The ReliaTel Control Evaporator Fan master module is the ReliaTel Refrigeration Module Operation (RTRM). -
Page 45: Economizer Set-Up
Sequence of Operation actuator (ECA) to open the economizer damper. The RTRM Table 17. Potentiometer settings tries to cool the zone utilizing the economizer to slightly 23 Btu/lb (53 kJ/kg) 67°F (19.4°C) below the zone temperature setpoint. If the mixed air 22 Btu/lb (51 kJ/kg) 63°F (17.2°C) sensor (MAS) senses that the mixed air temperature is... -
Page 46: Two-Speed Indoor Fan (Title 24) Control
Sequence of Operation RTRM signals that a heat failure has occurred by flashing 1. A purge cycle will be initiated after 90 minutes of the “Heat” LED on the zone sensor. There is a green LED accumulated compressor run time in only one mode: located in the Ignition Control Module. -
Page 47: Single Zone Variable Air Volume (Single Zone Vav) Control
Sequence of Operation The unit will stage down compressors for cooling in 2. Design Min Position @ High Fan Speed Command reverse order that they were staged and the supply fan will (RTEM Design Min) follow the unit mode transitions. Once it is determined 3. -
Page 48: Demand Controlled Ventilation
Sequence of Operation the Discharge Air Temperature rises above the deadband Note: Economizer Enable/Disable decisions will be made the control will request additional capacity as required based on the previous sections; however, the (additional compressor operation or economizer). As the economizer control point will now be variable Discharge Air Temperature falls below the deadband the based on the zone cooling demand. -
Page 49: Heating Operation
Sequence of Operation Heating Operation Provisions have been made in Service Test Mode to allow for proper damper minimum position setup: Heating operation on units configured with Single Zone 1. To set the Design and DCV Minimum Position setpoints VAV control will utilize two separate control at Minimum Fan Speed, set the unit to operate at Step methodologies based on heating configurations. -
Page 50: Variable Air Volume Applications (Traditional Vav)
Sequence of Operation Dehumidification Pressurize, etc.), the Supply Fan will be energized and the Fan Speed output will ramp to 100%. Entering Dehumidification • Zone Temperature Sensor Failure - If the Active Zone At startup a zone heating or cooling demand will prevent Temperature input goes out of range, the unit will dehumidification operation as on a non-Single Zone VAV discontinue all Heating, Cooling, and Dehumidification... - Page 51 Sequence of Operation Supply Air Temperature Control with an shipped with a Morning Warm-up setpoint configured and the Daytime Warm-up function is activated (switch on). Economizer Opening the DWU enable switch will disable this function. The economizer is utilized to control the supply air cooling If the system control is local, the DWU initiation setpoint is at +1.5°F around the supply air temperature setpoint range 3°F below the Morning Warm-up setpoint.
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Page 52: Constant Volume Or Variable Air Volume Applications (Szvav Or Traditional)
Sequence of Operation on the available data, is described below in descending airflow during all active heating periods like traditional order of complexity. Constant Volume units. If the unit has modulating heat, the unit can be made to do discharge heating with VAV control. Table 20. - Page 53 Sequence of Operation Ventilation Override Tracer™ if applicable and the Heat and Cool LED outputs (RTRM J6-7 and J6-8) will blink at a nominal rate of 1 blink Note: Applying 24 volts to one of the three Ventilation per second. Override Inputs manually activates ventilation Phase Monitor override.
- Page 54 Sequence of Operation to low operating temperatures whenever there is a demand for cooling. When a closed circuit has occurred for 5 seconds minimum, the RTRM turns off all of the cooling outputs. The Supply Fan will be held “On” until the Frostat has been opened for 5 continuous seconds or for 60 seconds after the last compressor was shut “Off”, whichever is the longest.
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Page 55: Maintenance
Maintenance Make sure all personnel are standing clear of the unit 6. Compare the “force” scale reading (Step 5) with the before proceeding. The system components will start appropriate “force” value listed in Table 23, p. 55. If the when the power is applied. “force”... -
Page 56: Monthly Maintenance
Maintenance Monthly Maintenance • Verify that all damper linkages move freely; lubricate with white grease, if necessary. Before completing the following checks, turn the unit OFF • Check supply fan motor bearings; repair or replace the and lock the main power disconnect switch open. motor as necessary. -
Page 57: Microchannel (Mche) Coils
Maintenance Microchannel (MCHE) Coils Optimum clearance between the sprayer nozzle and the microchannel coil is 1”–3”. NOTICE Final Process Coil Damage! For future reference, you may find it helpful to record the Failure to follow instructions below could result in coil unit data requested below in the blanks provided. -
Page 58: Troubleshooting
Troubleshooting 5. If no failures are indicated, use one of the TEST mode procedures described in “Start Up,” p. 40 to start the WARNING unit. This procedure will allow you to check all of the Hazardous Service Procedures! RTRM outputs, and all of the external controls (relays, contactors, etc.) that the RTRM outputs energize, for Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or... - Page 59 Troubleshooting Method 2 • LED 4 (Service) – “On” indicates a clogged filter. The second method for determining system status is done – “Off” during normal operation. by checking voltage readings at the RTRM (J6). The system indication descriptions and the approximate voltages are –...
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Page 60: Resetting Cooling And Heating Lockouts
Troubleshooting Resetting Cooling and Heating Fan Failure Switch Lockouts When the “Fan Failure” switch is wired to the RTOM, the LED will remain flashing the entire time the fan proving switch is closed, indicating a fan failure, and it will shut the Cooling Failures and Heating Lockouts are reset in an unit operations down. -
Page 61: Programmable And Digital Zone Sensor Test
Troubleshooting Test 3 Table 27. System mode and fan selection 2.32 Off/Auto Auto System Mode and Fan Selection 4.87 Cool/Auto Cool Auto The combined resistance of the Mode selection switch and 7.68 Auto/Auto Auto Auto the Fan selection switch can be measured between 10.77 Off/On terminals 2 and 4 on the Zone Sensor. -
Page 62: Unit Operation Without A Zone Sensor
Troubleshooting Unit Operation Without a Zone Sensor This procedure is for temporary operation only. The economizer and condenser fan cycling functions are disabled. WARNING Hazardous Voltage! Failure to disconnect power before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects before servicing. -
Page 63: Wiring Diagrams
Wiring Diagrams Note: Wiring diagrams can be accessed via e-Library by entering the diagram number in the literature order number search field or by contacting technical support. Table 28. Wiring diagrams Schematic Diagram Type Voltage Number Description 1213-2099 YS/H*150-300 50/60HZ, 2 Stage Gas Heat Power 1213-2100 YS/H*150-300 50/60HZ, Modulating Gas Heat Controls... -
Page 64: Warranty
Models 20 Tons and Greater for Commercial Use* Use* This warranty is extended by Trane, to the original The Company warrants for a period of 12 months from purchaser and to any succeeding owner of the real initial start-up or 18 months from date of shipment,... - Page 65 Warranty residential application. Commercial use is any application where the end purchaser uses the product for other than personal, family or household purposes. *A 5 year limited warranty is provided for the optional Low Leak Economizer, when combined with the optional FDD (Fault Detection and Diagnostics) option.
- Page 66 Notes RT-SVX26T-EN...
- Page 67 Notes RT-SVX26T-EN...
- Page 68 For more information, please visit trane.com or americanstandardair.com. Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.
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