Product Catalog. Packaged Rooftop Air Conditioners Voyager with e-flex Technology Cooling & Gas/Electric 12½ 17½ Tons, 60 Hz RT-PRC056A-EN.

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1 Product Catalog Packaged Rooftop Air Conditioners Voyager with e-flex Technology Cooling & Gas/Electric 12½ 17½ Tons, 60 Hz June 2014 RT-PRC056A-EN

2 Introduction Packaged Rooftop Air Conditioners Copyright Through the years, Trane has designed and developed the most complete line of Packaged Rooftop products available in the market today. Trane was the first to introduce the Micro microelectronic unit controls and has continued to improve and revolutionize this design concept. The ReliaTel control platform offers the same great features and functionality as the original Micro, with additional benefits for greater application flexibility. Voyager continues to provide the highest standards in quality and reliability, comfort, ease of service, and the performance of Trane light commercial products. Trane customers demand products that provide exceptional reliability, meet stringent performance requirements, and provide a payback based on life cycle costs. Trane delivers with Voyager with eflex technology. Voyager features cutting edge technologies: reliable compressors, Trane engineered ReliaTel controls, computer-aided run testing, and Integrated Comfort Systems. So, whether you re the contractor, the engineer, or the owner, you can be certain Voyager products are built to meet your needs. 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. Trademarks Revision Summary Trane and the Trane logo, CompleteCoat, Frostat, Integrated Comfort Systems, Voyager, ReliaTel, Tracer, Tracker, eflex are trademarks of Trane in the United States and other countries. BACnet is a registered trademark. All trademarks referenced in this document are the trademarks of their respective owners. RT-PRC056A-EN (06 June 2014) Added Low Leak Economizer Factory and Field Installed Option Updated Features & Benefits, Model Number Description, Performance Data, Weights, Electrical Data, and Mechanical Specifications 2014 Trane All rights reserved RT-PRC056A-EN

3 Table of Contents Features and Benefits Standard and Optional Features at a Glance Standard Features Factory Installed Options Factory or Field Installed Options Field Installed Options Other Benefits Outstanding Standard Features Variety of Options Factory Installed Options Factory or Field Installed Options Field Installed Options Other Benefits Application Considerations Sequence of Operation ReliaTel Controls Single Zone Variable Air Volume (Single Zone VAV) Control Selection Procedure Cooling Capacity Heating Capacity Air Delivery Selection Model Number Description Model Number Notes General Data Performance Data Controls Economizer Controls Zone Sensors Communication Interfaces Electrical Data Jobsite Connections Dimensional Data Weights Mechanical Specifications Factory Installed Options Factory or Field Installed Options Field Installed Options RT-PRC056A-EN 3

4 Features and Benefits Voyager has the features and benefits that make it first class in the light commercial rooftop market. Designed with input from field contractors and engineers, its U-shaped airflow performance is outstanding. Standard and Optional Features at a Glance Standard Features 2 throwaway filters 5 year Limited Compressor Warranty 5 year Limited Heat Exchanger 1 year Limited Parts Warranty Anti-Short Cycle Timer Belt Drive Motors Colored and Numbered Wiring Crankcase Heaters Dedicated Airflow Discharge Air Temperature Sensor Discharge Line Thermostat Easy Access Low Voltage Terminal Board (LTB) eflex Variable Speed Technology Enhanced Dehumidification Foil-Faced and Edge Captured Insulation Frostat High Efficiency Drum and Tube Heat Exchanger High Efficiency Gas Heat with Hot Surface Ignition High Pressure Cutout IAQ Sloped Condensate Drain Pan Liquid Line Refrigerant Drier Low Ambient Cooling to 0 F Microchannel Type Condenser Coils Operating Charge of R-410A Phase Monitor Provisions for Through-the-Base Gas and Condensate Drain Connections Quick Access Panels Quick Adjust Idler Arm Pulley ReliaTel Microprocessor Controls ReliaTel Options Module Single Point Power Single Side Service Single Zone Variable Air Volume (SZ VAV) Standardized Components Thermal Expansion Valve U-shaped Airflow Pattern Variable Frequency Drive 4 RT-PRC056A-EN

5 Features and Benefits Factory Installed Options 2 MERV 8 or MERV 13 Pleated Filters 4 with Filter Removal Tool 5 Color Touchscreen Human Interface CO 2 Sensor Wiring (Wiring Only) Complete Coat Microchannel Condenser Coil Condensate Overflow Switch Fault Detection Diagnostics (FDD) High Short Circuit Current Rated (SCCR) Electrical Subsystem 12 Hinged Access Doors Modulating Gas Heat Furnace with a 2.5:1 Turndown Ratio Powered or Unpowered Convenience Outlet 3 Stainless Steel Drain Pan Stainless Steel Heat Exchanger with 10 Year Warranty 4 Supply and/or Return Air Smoke Detector 7 Through the Base Electrical Access 9 Through the Base Electrical with Circuit Breaker 8, 9 Through the Base Electrical with Disconnect Switch5, 8, 9 Through the Base Gas Piping Factory or Field Installed Options Field Installed Options BACnet Communications Interface 1 Barometric Relief 1 Clogged Filter/Fan Failure Switch 4 Electric Heaters 4, 6, 9 Indoor Fan Motor Shaft Grounding Ring LonTalk Communications Interface (LCI) 4 Low Leak Economizer - Downflow Oversized Motors 4 Reference or Comparative Enthalpy 2, 4 Standard Economizer - Downflow 1 Tool-less Hail Guards 4 CO2 Sensor Digital Display Zone Sensor High Altitude Kit High and Low Static Drive Kits Humidity Sensor Low Leak Economizer - Downflow LP Conversion Kit Powered Exhaust Remote Potentiometer Roof Curb (Downflow Only) Standard Economizer - Horizontal Trane Communications Interface (TCI) 4 Ventilation Override Accessory Wireless Zone Sensor Zone Sensors and Remote Zone Sensors Note: Most Factory Installed Options (FIOPS) available for Downflow Air Discharge units only. Please verify with ordering system for availability. RT-PRC056A-EN 5

6 Features and Benefits Other Benefits Note: Explanation of Notes located in Model Number Description, p. 30. Cabinet Design Ensures Water Integrity Ease of Service, Installation and Maintenance Mixed Model Build Enables Fastest in the Industry Ship Cycle Times Outstanding Airflow Distribution ReliaTel Controls Benefits Rigorous Testing Unmatched Product Support Outstanding Standard Features Anti-Short Cycle Timer Provides a 3 minute minimum ON time and 3 minute OFF time for compressors to enhance compressor reliability by assuring proper oil return. Colored and Numbered Wiring Save time and money tracing wires and diagnosing the unit. Compressors Controls ReliaTel ReliaTel microprocessor controls provide unit control for heating, cooling and ventilating utilizing input from sensors that measure indoor and outdoor temperature and other zone sensors. ReliaTel also provides outputs for building automation systems and expanded diagnostics. For a complete list of ReliaTel offerings, refer to Other Benefits, p. 15. Conversionless Units Trane eflex variable speed scroll compressors are matched with a specially designed variable frequency drive that allows a modulating ratio of up to 4:1. Our eflex compressors are paired with fixed speed compressors such that the units are capable of continuous capacity modulation from 10% to 100%. By design, unit combined airflow and compressor capacities overlap to minimize the frequent cycling between stages typical of competing designs. This allows for unmatched control of leaving air temperatures to meet space loads. The eflex compressors also include brushless permanent magnet motors designed to operate at higher efficiency along with reducing the compressor motor speed and cycling results in significant part load energy savings. This makes units with eflex compressors the most efficient products in their class at part load. The dedicated design units (either downflow or horizontal) require no panel removal or alteration time to convert in the field a major cost savings during installation. Horizontal units come complete with duct flanges so the contractor doesn t have to field fabricate them. These duct flanges are a time and cost saver. 6 RT-PRC056A-EN

7 Features and Benefits Crankcase Heaters These band heaters provide improved compressor reliability by warming the oil to prevent migration during off-cycles or low ambient conditions. These are standard on all Voyager models. Discharge Air Temperature Sensor Provides true discharge air sensing in heating models. Discharge Line Thermostat A bi-metal element discharge line thermostats installed as a standard feature on the discharge line of each system. This standard feature provides extra protection to the compressors against high discharge temperatures in case of loss of charge, extremely high ambient and other conditions which could drive the discharge temperature higher. Easy Access Low Voltage Terminal Board Foil Faced Insulation Voyager s Low Voltage Terminal Board is external to the electrical control cabinet. It is extremely easy to locate and attach the thermostat wire and test operation of all unit functions. This is another cost and time saving installation feature. All panels in the evaporator section of the unit have cleanable foil-faced insulation. All edges are either captured or sealed to ensure no insulation fibers get into the airstream. Enhanced Dehumidification with eflex Every Ultra High Efficiency unit is equipped with Enhanced Dehumidification, which operates when connected to a humidity sensor. With Enhanced Dehumidification, the ReliaTel control reduces the minimum indoor airflow and modulates the eflex compressor operation to allow for additional moisture removal of the return air. When dehumidification is required without cooling, the ReliaTel control brings the compressors to an appropriate capacity to remove moisture without overcooling the space providing efficient humidity control. Frostat This capillary bulb embedded in the face of the evaporator coil monitors coil temperature to prevent evaporator icing and protect the compressor. Recommended for applications with low leaving air temperatures, low airflow and/or high latent load applications. Heat Exchanger Drum and Tube The cabinet features a drum and tube heat exchanger (pictured right) that is manufactured using aluminized steel with stainless steel components for maximum durability. The requirement for cycle testing of heat exchangers is 10,000 cycles by ANSI Z This is the standard required by both UL and AGA for cycle test requirements. Forced Combustion Blower Negative Pressure Gas Valve Hot Surface Ignitor RT-PRC056A-EN 7

8 Features and Benefits Trane requires the design to be tested to 2½ times this current standard. The drum and tube design has been tested and passed over 150,000 cycles, which is over 15 times the current ANSI cycling requirements. The negative pressure gas valve is used in the standard furnaces. This is one of our unique safety features. Modulating heaters use a pressure switch to ensure that the blower motor is operating before the gas valve is allowed to open. The forced combustion blower supplies pre-mixed fuel through a single stainless steel burner screen into a sealed drum where ignition takes place. It is more reliable to operate and maintain than a multiple burner system. Modulating furnaces contain a metal fiber material to ensure proper flame distribution at low fire. The hot surface ignitor is a gas ignition device which doubles as a safety device utilizing a continuous test to prove the flame. The design is cycle tested at the factory for quality and reliability. Our gas/electric rooftops exceed all California seasonal efficiency requirements and perform even better than the California NOx emission requirements. Low Ambient Cooling All Voyager microprocessor units have cooling capabilities down to 0 F as standard. Low Voltage Connections The wiring of the low voltage connections to the unit and the zone sensors is as simple as 1-1, 2-2, and 3-3. This simplified system makes it easy for the installer to wire. Microchannel Condenser Coil Ribbon Fin Microchannel Flat Tube Header (top removed) Microchannel coils have better heat transfer performance due to flat streamlined tubes with small ports, and metallurgical tube-to-fin bond. Microchannel condenser coil can reduce system refrigerant charge by up to 50% (potential LEED credit) because of smaller internal volume, which can lead to better compressor reliability. Compact all aluminum microchannel coils also help to reduce the unit weight. All-aluminum construction improves re-cyclability. Galvanic corrosion is also minimized due to all aluminum construction. Strong aluminum brazed structure provides better fin protection. Motors All indoor fan motors are belt drive as standard. Pressure Cutouts Low and high pressure cutouts are standard on all Voyager models. Phase Monitor Voyager features a three-phase line monitor module that protects against phase loss, phase reversal and phase unbalance. It is intended to protect compressors from reverse rotation. It has an operating input voltage range of Vac, and LED indicators for ON and FAULT. There are no field adjustments and the module will automatically reset from a fault condition. 8 RT-PRC056A-EN

9 Features and Benefits Quick-Access Panels Remove three or more screws for access to the standardized internal components and wiring. Quick-Adjust Slider Plate With the Quick-Adjust Slider Plate (pictured right), the belt and sheaves can be quickly adjusted without moving the mounted fan motor. The result is a major savings in time and money. ReliaTel Options Module (RTOM) The RTOM monitors the supply fan proving, clogged filter, supply air temperature, exhaust fan setpoint, dehumidification setpoint, supply air tempering, frostat and smoke detector. Single Point Power A single electrical connection powers the unit. Single Side Service Single side service is standard on all units. Single Zone VAV - One Zone Variable Air Volume Mode Note: Single Zone VAV is designed to be used with a zone sensor. If a unit is configured for Single Zone VAV operation but is connected to a thermostat, the control will revert to multi-speed (2-Speed) indoor fan control and staged compressor control. This drastically reduces the energy savings available with this design. Single zone VAV is designed for use in single zone applications like gymnasiums, auditoriums, manufacturing facilities, retail box stores, and any large open spaces, where there is a lot of diversity in the load profile. Single Zone VAV (SZ VAV) is an ideal replacement to "yesterday's" constant volume (CV) systems, by reducing operating costs while improving occupant comfort. SZ VAV systems combine Trane application, control and system integration knowledge to exactly match fan speed with cooling and heating loads, regardless of the operating condition. Trane algorithms meet/exceed ASHRAE , SZ VAV energy-saving recommendations, and those of CA Title 24. The result is an optimized balance between zone temperature control and system energy savings. Depending on your specific application, energy savings can be as much as 20%. Note: Building system modeling in energy simulation software like TRACE is recommended to evaluate performance improvements for your application. SZ VAV is fully integrated into the ReliaTel Control system and is available today. It provides the simplest and fastest commissioning in the industry through proven factory-installed, wired, and tested system controllers. All control modules, logic and sensors are factory installed, and tested to assure the highest quality and most reliable system available. This means no special programming of algorithms, or hunting at the jobsite for sensors, boards, etc. that need to be installed in the field. Single zone VAV is a quick and simple solution for many applications and is available from your most trusted rooftop VAV system solution provider - Trane. Sloped Drain Pans Every Voyager unit has a non-corrosive, sloped drain pan made of pre-painted steel and standard on all units. RT-PRC056A-EN 9

10 Features and Benefits Variety of Options 1 Standardized Components Components are placed in the same location on all Voyager units. Familiarize yourself with one Voyager and you are familiar with every Voyager. Due to standardized components throughout the Voyager line, contractors/owners can stock fewer parts. Thermal Expansion Valve Thermal expansion valves are standard on ultra high efficiency units to allow superior control over full modulating operating range. U-Shaped Airflow Pattern The U-shaped airflow allows for improved static capabilities. Variable Frequency Drives Variable Frequency Drives are factory installed and tested to provide supply fan motor speed modulation, as well as modulating gas heat. VFDs on the supply fan, as compared to inlet guide vanes or discharge dampers, are quieter, more efficient, and are eligible for utility rebates. All VFDs are designed to allow bypass if required. Bypass control will simply provide full nominal airflow in the event of drive failure. Modulating gas heat models with VFDs allow tighter space temperature control with less temperature swing. Factory Installed Options CO 2 Sensor Wiring This is the unit wiring for field installed C02 sensors. Factory-installed C02 sensor wiring saves time and ensures proper unit connections for the field installed C02 sensor kits. Complete Coat Condenser Coil The cathodic epoxy type electrodisposition coating is formulated for high edge build to a number of different types of heat exchangers. The coating is selected to provide excellent resistance and durability to corrosive effects of alkalies, acids, alcohols, petroleum, seawater, salt air, and corrosive environments. This coating is available for microchannel coils only. Circuit Breaker (Requires Through-the-Base Electrical) This option is a factory installed thermal magnetic, molded case, HACR Circuit Breaker with provisions for through the base electrical connections. Available on all models. Condensate Overflow Switch A condensate overflow switch is available to shut the unit down in the event that the condensate drain line becomes clogged. This option protects the unit from water overflowing from the drain pan and entering the base of the units. 1 Refer to Model Number Description, p. 30 for option availability. 10 RT-PRC056A-EN

11 Features and Benefits Disconnect Switch (Requires Through-the-Base Electrical) Fault Detection & Diagnostics (FDD) This offering meets the mandatory requirement of CA Title 24 of fully configurable diagnostics allowing fault history and reading fault codes at the unit.this option provides detection of the following faults: Air temperature sensor failure/fault and notification of acceptable economizer mode.the FDD system shall be certified by the Energy Commission as meeting the requirements. High Efficiency Filtration Voyager units offer a variety of high efficiency filtration options. MERV 8 and MERV 13 filters provide additional filtration beyond the capabilities of typical 2 throwaway filters. Also, when MERV 8 or MERV 13 filters are ordered, units come equipped with a filter removal tool. High Short Circuit Current Rating (SCCR) Voyager rooftop units now have an optional high short circuit current rated electrical subsystem for units with an MOP above 60A. This option is a perfect fit for applications that need protection against high potential fault currents. This option also includes individual over current protection for each compressor and the indoor fan, as well as a dedicated over current protection to the condenser fan motor(s). When the high SCCR is ordered, the control box will have components separated into two sections - high and low voltage components. Hinged Access Doors Factory installed 3-pole, molded case, disconnect switch with provisions for through the base electrical connections are available. Available on all models. Codes require a method of assured unit shutdown for servicing. Field-installed disconnects sometimes interfere with service access. Factory installation of unit disconnects reduces costs, assures proper mounting and provides the opportunity to upgrade to unit circuit breaker protection. These doors permit easy access to the filter, fan/ heat, and compressor/control sections. They reduce the potential roof damage from screws or sharp access door corners. RT-PRC056A-EN 11

12 Features and Benefits Human Interface The Trane 5 Inch Color Touchscreen Human Interface provides an intuitive user interface to the rooftop unit that speeds up unit commissioning, shortens unit troubleshooting times, and enhances preventative maintenance measures. The human interface includes several features such as: Data trending capabilities by means of time series graphs Historical alarm messages Real-time sensor measurements On board system setpoints USB port that enables the downloading of component runtime information as well as trended historical sensor data Customized reports Note: For more information, refer to RT-SVX49*-EN. Modulating Gas Heat with a 2.5:1 Turndown Ratio Upon receiving a call for heat, modulating gas heat units with a 2.5:1 turndown ratio light their burner at full fire (100%). After the burner is lit, the unit controls will monitor the discharge air temperature and modulate the input rate down to match the load. Note: Modulating gas heat units are equipped with a stainless steel heat exchanger as standard. Powered or Unpowered Convenience Outlet This option is a GFCI, 120V/15amp, 2-plug, convenience outlet, either powered or unpowered. This option can only be ordered when Through the Base Electrical with either the Disconnect Switch or Circuit Breaker option is ordered. This option is available on all models. Stainless Steel Drain Pan For excellent corrosion and oxidation resistance, the optional stainless steel drain pan provides a cleanable surface that complement other IAQ solutions such as high efficiency filtration (MERV 8 or 13), and demand control ventilation (CO2). Stainless Steel Heat Exchanger The optional stainless steel heat exchanger is constructed of 304 stainless steel. It is resistant to corrosion and oxidation and easy to clean. The high strength to weight ratio allows for high ventilation rates with gas units and comes standard with a modulating gas heat option. With this option, a 10-year stainless steel heat exchanger warranty is standard. Supply and Return Air Smoke Detector With this option (pictured right) installed, if smoke is detected, all unit operation will be shut down. Reset will be manual at the unit. Return Air Smoke Detectors require minimum allowable airflow when used with certain models. 12 RT-PRC056A-EN

13 Features and Benefits Through-the-Base Electrical Utility Access An electrical service entrance shall be provided allowing electrical access for both control and main power connections inside the curb and through the base of the unit. Option will allow for field installation of liquid-tight conduit and an external field installed disconnect switch. Factory provided through the base openings simplify wiring and piping. Because these utility openings frequently minimize the number of roof penetrations, the integrity of roofing materials is enhanced. Through-the-Base Gas Piping (Gas/Electric Only) This option (pictured right) shall have all piping necessary including, black steel, manual gas shut-off valve, elbows, and union. This assembly will require minor field labor to install. Factory or Field Installed Options BACnet Communications Interface The BACnet communications interface allows the unit to communicate directly with a generic open protocol BACnet MS/TP Network Building Automation System Controls. Barometric Relief Designed to be used on downflow units, barometric relief is an unpowered means of relieving excess building pressure. Clogged Filter/Fan Failure Switch A dedicated differential pressure switch is available to achieve active fan failure indication and/or clogged filter indication. These sensors allow a zone sensor service light or Integrated Comfort System to indicate a dirty filter or a fan that s not working. The field installation charges for these valuable feedback devices often eliminate them from consideration. Factory installation can make such features a good investment. Economizer - Standard, Downflow Economizers are equipped with either dry bulb, reference, or comparative enthalpy sensing. These economizers provide free cooling as the outdoor temperature and/or humidity decreases. Correctly installed, they offer a valuable energy savings. Factory-installed economizers save time and ensure proper installation. Note: Factory-installed economizers require some field set-up. Economizer - Low Leak, Downflow This accessory meets low leak requirements for ASHRAE 90.1, IECC, and CA Title 24 standards (3 cfm/ft^2@1" wg exterior air, 4 cfm/ft^2@1" wg return air). This option allows 100% outdoor air supply from 0-100% modulating dampers and is standard with barometric relief. It can be paired with powered exhaust for additional building pressure relief. This option can be paired with or without Fault Detection & Diagnostics (FDD) to meet current mandatory CA Title 24 requirements. Available on downflow units only. The economizers come with three control options, dry bulb and reference or comparative enthalpy (optional). Electric Heaters Electric heat modules are available within the basic unit. If ordering the Through the Base Electrical option with an Electrical Heater, the heater must be factory installed. RT-PRC056A-EN 13

14 Features and Benefits Indoor Fan Motor Shaft Grounding Ring Shaft grounding rings are available on VFD driven motors to provide a conductive discharge path away from the motor bearings to ground. Bearing Protection Rings shall be maintenance free circumferential rings of conductive micro fibers that discharge voltages to ground. LonTalk Communications Interface The LonTalk communications interface allows the unit to communicate as a Tracer LCI-V device or directly with generic LonTalk Network Building Automation System Controls. Oversized Motors Factory or field installed oversized motors are available for high static applications. Reference or Comparative Enthalpy Measures and communicates humidity while maximizing comfort control. Tool-less Hail Guards Tool-less, hail protection quality coil guards (pictured right) shall be either factory or field-installed for condenser coil protection. This option protects the condenser coil from vandalism and/or hail damage. Field Installed Options CO2 Sensor - Demand Control Ventilation (DCV) Demand-controlled ventilation (DCV) is a control strategy that responds to the actual demand (need) for ventilation by regulating the rate at which the HVAC system brings outdoor air into the building. A CO 2 sensor measures the concentration (parts per million, ppm) of CO 2 (Carbon Dioxide) in the air. As the CO2 concentration changes, the outside air damper modulates to meet the current ventilation needs of the zone. The CO 2 sensor kit is available as a field installed accessory. Two field installed kits are offered; C0 2 sensor and wiring or C0 2 sensor only. The C0 2 sensor only kit should be ordered with factory installed C02 sensor wiring. Factory installed C02 sensor wiring saves set-up time and ensures proper unit connections for the C02 sensor. Digital Display Zone Sensor The Digital LCD (Liquid Crystal Display) zone sensor has the look and functionality of standard zone sensors. Economizer - Standard, Horizontal Economizers are equipped with either dry bulb or reference or comparative enthalpy sensing. These economizers provide free cooling as the outdoor temperature and/or humidity decreases. Correctly installed, they offer a valuable energy savings. Economizer - Low Leak, Downflow This accessory meets low leak requirements for ASHRAE 90.1, IECC, and CA Title 24 standards (3 cfm/ft^2@1" wg exterior air, 4 cfm/ft^2@1" wg return air). This option allows 100% outdoor air supply from 0-100% modulating dampers and is standard with barometric relief. It can be paired with powered exhaust for additional building pressure relief. Available on downflow units only. High Altitude Kit Requirement for units applies above 2000 feet. Derate gas orifices by 10%. 14 RT-PRC056A-EN

15 Features and Benefits Other Benefits LP Conversion Kit Provided for field conversion of gas/electric units from natural gas to propane. Powered Exhaust This option is available on downflow units and provides exhaust of the return air, when using a downflow economizer, to maintain proper building pressurization. Great for relieving most building overpressurization problems. Remote Potentiometer When properly installed in the economizer control circuitry, this accessory provides a remote variable resistance to enable the operator to adjust the minimum damper position. Roof Curbs Available for downflow units. Only two roof curbs for the entire Voyager line simplifies curb selection. Static Drive Accessories Available on many models, this high and low static drive accessories extend the capability of the standard motor. Avoid expensive motors and operating costs by installing this optimized sheave accessory. Trane Communication Interface (TCI) Available field installed. This module - when applied with the ReliaTel - easily interfaces with Trane s Integrated Comfort System. Ventilation Override Accessory With the Ventilation Override Accessory installed, the unit can be set to transition to up to 3 different pre-programmed sequences for Smoke Purge, Pressurization and Exhaust. The transition occurs when a binary input on the RTOM is closed (shorted). This would typically be a hard wired relay output from a smoke detector or fire control panel. The ventilation override kit is available as a field installed accessory. Wireless Zone Sensor LCD display that provides heat, cool, auto, or off. Includes two temperature setpoints and a lockable setting with F or C indicators. Zone Sensors Available in programmable, automatic and manual styles. Note: Zone sensors are required for units configured for Single Zone VAV indoor fan and eflex compressor system control to enable Single Zone VAV and eflex modulation functionality. Cabinet Integrity For added water integrity, Voyager has a raised 1-1/8 lip around the supply and return of the downflow units to prevent water from blowing into the ductwork. Easy to Install, Service and Maintain Because today s owners are very cost-conscious when it comes to service and maintenance, Voyager was designed with direct input from service contractors. This valuable information helped to design a product that would get the serviceman off the job quicker and save the owner money. Voyager does this by offering outstanding standard features enhanced by a variety of factory and RT-PRC056A-EN 15

16 Features and Benefits field installed options, multiple control options, rigorously tested proven designs and superior product and technical support. Outstanding Airflow Distribution Airflow is outstanding. The Voyager can replace an older machine with old ductwork and, in many cases, improve the comfort through better air distribution. ReliaTel Controls Benefits ReliaTel controls provide unit control for heating, cooling and ventilating by utilizing input from sensors that measure outdoor and indoor temperature. Quality and Reliability are enhanced through ReliaTel control and logic: Prevents the unit from short cycling, considerably improving compressor life. Ensures the compressor will run for a specific amount of time which allows oil to return for better lubrication, enhancing the reliability of the compressor. Voyager with ReliaTel reduces the number of components required to operate the unit, thereby reducing possibilities for component failure. ReliaTel Makes Installing and Servicing Easy ReliaTel eliminates the need for field installed anti-shortcycle timer and time delay relays. ReliaTel controls provide these functions as an integral part of the unit. The contractor no longer has to purchase these controls as options and pay to install them. The wiring of the low voltage connections to the unit and the zone sensors is as easy as 1-1, 2-2, and 3-3. This simplified system makes wiring easier for the installer. ReliaTel Makes Testing Easy ReliaTel requires no special tools to run Voyager unit through its paces. Simply place a jumper between Test 1 and Test 2 terminals on the Low Voltage Terminal Board and the unit will walk through its operational steps automatically. The unit automatically returns control to the zone sensor after stepping through the test mode a single time, even if the jumper is left on the unit. As long as the unit has power and the system on LED is lit, ReliaTel is operational. The light indicates that the controls are functioning properly. ReliaTel features expanded diagnostic capabilities when utilized with Trane Integrated Comfort Systems. Some zone sensor options have central control panel lights which indicate the mode the unit is in and possible diagnostic information (dirty filters for example). Other ReliaTel Benefits The ReliaTel built-in anti-shortcycle timer, time delay relay and minimum on time control functions are factory tested to assure proper operation. ReliaTel softens electrical spikes by staging on fans, compressors and heaters. Intelligent Fallback is a benefit to the building occupant. If a component goes astray, the unit will continue to operate at predetermined temperature setpoint. Intelligent Anticipation is a standard ReliaTel feature. It functions continuously as ReliaTel and zone sensor(s) work together in harmony to provide much tighter comfort control than conventional electro-mechanical thermostats. 16 RT-PRC056A-EN

17 Features and Benefits The same ReliaTel Board fits all Packaged Gas/Electric, Cooling, and Heat Pump models. This provides standardization of parts for contractors. Less money is tied up in inventory with ReliaTel. Rigorous Testing All of Voyager s designs were rigorously rain tested at the factory to ensure water integrity. Voyager units incorporate the Trane-Tite-Top (T3). Each part of the top (either two or three pieces) overlaps in such a way that water cannot leak into the unit. These overlapped edges are gasketed and sealed to ensure superior water integrity. Actual shipping tests were performed to determine packaging requirements. Units were test shipped around the country to determine the best packaging. Factory shake and drop tests were used as part of the package design process to help assure that the unit arrives at the job site in top condition. Rigging tests include lifting a unit into the air and letting it drop one foot, assuring that the lifting lugs and rails hold up under stress. For the microchannel coils, the supplier will perform the leak check at 450 psig. The completely assembled refrigerant system is leak tested at a minimum of 225 psig with a refrigerant and nitrogen mixture. All parts are inspected at the point of final assembly. Sub-standard parts are identified and rejected immediately. Every unit receives a 100% unit run test before leaving the production line to make sure it lives up to rigorous Trane requirements. Unmatched Support Trane Sales Representatives are a Support Group that can assist you with: Product Service Special Applications Computer Programs and much more Application Training Specifications RT-PRC056A-EN 17

18 Application Considerations Application of this product should be within the cataloged airflow and cooling considerations. Barometric Relief This product line offers an optional barometric relief damper for use in conjunction with economizer option. This accessory consists of gravity dampers which open with increased pressure. As the building air pressure increases, the pressure in the unit return air section also increases, opening the dampers and relieving the conditioned space. Notes: The effectiveness of barometric relief damper during economizing operation is system related. Pressure drop of the return air system should be considered to control building pressurization. Clearance Requirements The recommended clearances identified with unit dimensions should be maintained to ensure adequate serviceability, maximum capacity and peak operating efficiency. Actual clearances which appear inadequate should be reviewed with local Trane sales personnel. Complete Coat Microchannel Condenser Coil The cathodic epoxy type electrodisposition coating is formulated for high edge build to a number of different types of heat exchangers. The coating is selected to provide excellent resistance and durability to corrosive effects of alkalies, acids, alcohols, petroleum, seawater, salt air, and corrosive environments. This coating shall be available on microchannel condenser coils. Condensate Trap The evaporator is a draw-through configuration. A trap must be field provided prior to start-up on the cooling cycle. Heating Operation The heat exchanger is manufactured with aluminized steel. To prevent condensation within the heat exchanger, do not exceed 50 percent outside air or a minimum mixed air temperature of 40 F. Optional Stainless Steel Heat Exchanger The optional stainless steel heat exchanger is manufactured with 304 stainless steel. To prevent corrosion and prolong heat exchanger reliability, the minimum mixed air temperature allowed across the heat exchanger is 20 F. The stainless steel heat exchanger option is an excellent option that compliments the dehumidification package and is used in conjunction with the modulating heat option. Whenever high outside air or outside applications exist, these options should be utilized. Low Ambient Cooling The Voyager line features, with ReliaTel microprocessor controls, low ambient cooling down to 0 F. The following options need to be included/considered when low ambient applications are required: continuous fan operation, crankcase heaters (standard), thermal expansion valves, frostat. Contact your local Trane Representative for more assistance with low ambient cooling applications. Unit Pitch These units have sloped condensate drain pans. Units must be installed level. Any unit slope must be toward access side of the unit. Low Airflow Unit applications designed for airflow below 320cfm/ton are not available on units with eflex and Single Zone VAV. Voyager units will operate below 320 cfm/ton during normal operation. Units should not be set below 320 cfm/ton. 18 RT-PRC056A-EN

19 Application Considerations Sequence of Operation ReliaTel Controls The master module is the ReliaTel Refrigeration Module (RTRM). The RTRM provides compressor anti-short cycle timing functions through minimum "Off" and "On" timing to increase reliability, performance and to maximize unit efficiency. Upon power initialization, the RTRM performs self-diagnostic checks to insure that all internal controls are functioning. It checks the configuration parameters against the components connected to the system. The LED located on the RTRM module is turned "On" within one second after power-up if all internal operations are okay. The RTRM in conjunction with the Variable Speed Module (VSM) will provide capability to control of a modulating eflex compressor, and two multispeed outdoor motors (ODM). The ReliaTel Options Module (RTOM) is utilized in conjunction with the RTRM for control of a variable speed indoor motor (IDM) and optional accessories. All units employ a Phase Monitor to ensure proper power supply connection of phases for compressor operation. If the monitor senses incorrect phase connection (phase reversal), a loss of phase, or large voltage imbalance between phases, all unit operation will be prevented until the condition is corrected. The Phase Monitor has green (Ok) and red (Phase Fault) status LEDs on the face of the monitor. All units are functional tested to ensure correct factory wiring. A red status LED is an indication of a serious problem that can only be resolved by isolating and repairing the Supply Power fault. ReliaTel Control Cooling without an Economizer When the system switch is set to the "Cool" position and the zone temperature rises above the cooling setpoint controlband, the RTRM energizes the modulating eflex compressor starting with the minimum compressor motor speed and runs through a start-up sequence for that compressor, provided the low pressure control (LPC4), high pressure control (HPC3), and the discharge line thermostat (DLT3) are closed. When the eflex compressor and the outdoor fan motor are energized, they adjust motor speeds in order to maintain the zone temperature to within ±2 F of the sensor setpoint at the sensed location. If the modulating compressor at its maximum capacity cannot satisfy the cooling requirement, the RTRM energizes the first fixed speed compressor, provided the low pressure control (LPC1), the high pressure control (HPC1), and the discharge line thermostat (DLT1) are closed, while simultaneously reducing the modulating compressor motor speed to allow a smooth transition in system capacity. When the fixed speed compressor is energized, the ReliaTel control starts to maintain the zone temperature to within ±2 F of the sensor setpoint at the sensed location by modulating the eflex compressor speed and both ODM. If the first two compressors cannot satisfy the load, the second fixed speed compressor is energized in addition to the first fixed speed compressor, provided the low pressure control (LPC1), the high pressure control (HPC2), and the discharge line thermostat (DLT2) are closed. Simultaneously, the modulating compressor speed is reduced for a smooth transition to the higher system capacity. When the third compressor is energized, the ReliaTel control starts to maintain the zone temperature to within +/-2 F of the sensor setpoint at the sensed location by modulating the eflex compressor motor speed and both ODM. ReliaTel Control Evaporator Fan Operation With the indoor fan in "Auto" mode, the RTRM energizes the indoor fan motor for approximately 1 second after energizing the modulating compressor in the cooling mode. In the heating mode, the RTRM energizes the indoor fan motor approximately 45 seconds after gas ignition (gas heat unit) or 1 second before energizing electric heat (electric heat unit). With the indoor fan in "On" mode, the RTRM keeps the indoor fan energized for continuous fan motor operation. When the unit is equipped with the optional clogged filter switch, wired to the ReliaTel Options Module (RTOM), RT-PRC056A-EN 19

20 Application Considerations the RTRM produces an analog signal output if the clogged filter switch closes for two minutes after a request for fan operation. When the system is connected to a remote panel, the "SERVICE" LED will be turned on when this failure occurs. Drain Pan Condensate Overflow Switch (Optional) This input incorporates the Condensate Overflow Switch (COF) mounted on the drain pan and the ReliaTel Options Module (RTOM). When the condensate level reaches the trip point for 6 continuous seconds, the RTOM will shut down all unit function until the overflow condition has cleared. The unit will return to normal operation after 6 continuous seconds with the COF in a non-tripped condition. If the condensate level causes the unit to shutdown more than 2 times in a 3 day period, the unit will be locked-out of operation. A manual reset of the diagnostic system through the Zone Sensor or Building Automation System will be required. Cycling unit power will also clear the fault. Low Ambient Operation During low ambient operation, outside air temperature below 40 F, the RTRM will cycle the compressors and outdoor fan motors "Off" for approximately 3 minutes after every 10 minutes of accumulated compressor run time. The indoor fan motor will continue to operate during this evaporator defrost cycle and the compressors and outdoor fans will return to normal operation once the defrost cycle has terminated and the compressor "Off" time delay has been satisfied. ReliaTel Control Cooling with an Economizer The economizer is utilized to control the zone temperature providing the outside air conditions are suitable. Outside air is drawn into the unit through modulating dampers. When cooling is required and economizing is possible, the RTRM sends the cooling request to the unit economizer actuator to open the economizer damper. The RTRM tries to cool the zone utilizing the economizer to slightly below the zone temperature setpoint. If the mixed air sensor (MAS) senses that the mixed air temperature is below 53 F, the damper modulates toward the closed position. If the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is fully open, the RTRM energizes the modulating eflex compressor. If the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is fully open, the RTRM instructs the compressor inverter drive to increase the compressor speed to allow more compressor capacity. If the eflex compressor is running at its maximum capacity and the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is fully open, the RTRM energizes the first fixed speed compressor, while simultaneously instructing the compressor inverter drive to decrease the eflex compressor capacity to allow a smooth system capacity transition. If the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is fully open, the RTRM instructs the compressor inverter drive to increase the eflex compressor speed to allow more compressor capacity. If the eflex compressor is running at its maximum capacity and the zone temperature continues to rise above the zone temperature setpoint controlband and the economizer damper is fully open, the RTRM energizes the second fixed speed compressor, while simultaneously decreasing the eflex compressor speed to allow a smooth transition of system cooling capacity. All compressor capacity transitions are accompanied by corresponding IDM and ODM speed adjustments to allow optimal unit cooling performance. The ECA continues to modulate the economizer damper open/closed to keep the mixed air temperature that is calculated by the RTRM. If economizing is not possible, the ECA drives the damper to the minimum position setpoint when the indoor fan relay is energized and allows mechanical cooling operation. When the unit is equipped with the optional fan failure switch, wired to the RTOM, the RTRM will stop all cooling functions and produce an analog output if the fan failure switch does not open within 40 seconds after a request for fan operation. When the system is connected to a remote panel, the "SERVICE" LED will flash when this failure occurs. 20 RT-PRC056A-EN

21 Application Considerations Economizer Set-Up Adjusting the minimum position potentiometer located on the unit economizer actuator (ECA) sets the required amount of ventilation air. Two of the three methods for determining the suitability of the outside air can be selected utilizing the enthalpy potentiometer on the ECA, as described below: 1. Ambient Temperature-Controlling the economizing cycle by sensing the outside air dry bulb temperature. Table 1 lists the selectable dry bulb values by potentiometer setting. 2. Reference Enthalpy-Controlling the economizer cycle by sensing the outdoor air humidity. Table 1 lists the selectable enthalpy values by potentiometer setting. If the outside air enthalpy value is less than the selected value, the economizer is allowed to operate. 3. Comparative Enthalpy-By utilizing a humidity sensor and a temperature sensor in both the return air stream and the outdoor air stream, the unit control processor (RTRM) will be able to establish which conditions are best suited for maintaining the zone temperature, i.e. indoor conditions or outdoor conditions. The potentiometer located on the ECA is non-functional when both the temperature and humidity sensors are installed. Table 1. Potentiometer settings Potentiometer Setting Enthalpy Dry Bulb A 27 Btu/lb (63 kj/kg) 73 F(22.8 C) B 25 Btu/lb (58 kj/kg) 70 F (21.1 C) C (a) 23 Btu/lb (53 kj/kg) 67 F (19.4 C) D 22 Btu/lb (51 kj/kg) 63 F (17.2 C) E 19 Btu/lb (44 kj/kg) 55 F (12.8 C) (a) Factory setting ReliaTel Control Heating Operation for Cooling Only Units When the system switch is set to the "Heat" position and the zone temperature falls below the heating setpoint controlband, the RTRM energizes the first stage of electric heat. If the first stage of electric heat cannot satisfy the heating requirement, the RTRM energizes the second stage electric heat if applicable. The RTRM cycles both the first and second stages of heat "On" and "Off" as required to maintain the zone temperature setpoint. ReliaTel Control Heating Operation for Gas Units When the system switch is set to the "Heat" position and the zone temperature falls below the heating setpoint controlband, a heat cycle is initiated when the RTRM communicates ignition information to the Ignition module. Modulating Gas Heat 2.5:1 Turndown In a modulating heat unit, when a call for heat is received, the burner will light at full fire (100%). After the burner is lit, the unit controls will monitor the discharge air temperature and modulate the input rate down to match the load. Ignition Control Module Two-Stage (IGN) runs self-check (including verification that the gas valve is de-energized). IGN checks the high-limit switches (TC01 and TC02) for normally closed contacts. With power supplied to the ignition module, the hot surface ignition probe is preheated. The gas valve is energized for a few seconds for trial for ignition, to ignite the burner. Once the burner is ignited, the hot surface ignition probe is de-energized by the ignition module and functions as the flame sensing device. RT-PRC056A-EN 21