Packaged Rooftop Air Conditioners - Trane

1 Packaged RooftopAir Conditioners27 to 50 Ton - 60 Hz23 to 42 Ton (81-148 kW) - 50 HzVoya ge r commercial withReliaTel ControlsRT-PRC007-ENApril 2004 2004 American Standard Inc. All rights reservedRT-PRC007-ENIntroductionPackaged RooftopAir ConditionersThrough the years, Trane has designedand developed the most complete line ofPackaged Rooftop products available inthe market today. Trane was the first tointroduce the Micro microelectronic unitcontrols and has continued to improveand revolutionalize this design ReliaTel control platform offers thesame great features and functionality asthe original Micro, with additional benefitsfor greater application voyager commercial line offers 27 to 50 ton 60 Hz and 23 to 42 ton 50 Hzmodels. Both 50 and 60 Hz models comein a choice of five sizes to meet thechanging demands of the commercialrooftop customers demand products thatprovide exceptional reliability, meetstringent performance requirements, andare competitively priced. Trane deliverswith voyager commercial features cuttingedge technologies: reliable 3-D Scrollcompressors, Trane engineered ReliaTelcontrols, computer-aided run testing, andIntegrated Comfort Systems.

2 So,whether you re the contractor, theengineer, or the owner you can be certainVoyager commercial Products are built tomeet your s Hard To Stop A Trane . 3 ContentsRT-PRC007-ENIntroductionFeatures and BenefitsApplication ConsiderationsSelection ProcedureModel Number DescriptionGeneral DataPerformance DataPerformance Adjustment FactorsControlsElectric PowerDimension and WeightsMechanical Specifications2410131719262549535665RT-P RC007-EN4 Features andBenefitsStandard Features Factory installed and commissionedReliaTel controls Trane 3-D Scroll Compressors Dedicated downflow or horizontalconfiguration CV or VAV control Frostat coil frost protection on all units Supply air overpressurization protectionon VAV units Supply airflow proving Emergency stop input Compressor lead-lag Occupied-Unoccupied switching Timed override activation FC supply fans UL and CSA listing on standard options Two inch standard efficiency filters Finish exceeds salt spray requirementsof ASTM B117 Sloped condensate drain pan Cleanable, IAQ-enhancing.

3 Foil facedinsulation on all interior surfaces exposedto the unit air streamOptional Features Electric heat Natural gas heat LP gas heat (kit only) Power Exhaust Barometric Relief High Efficiency 2 Throwaway Filters High Efficiency 4 Throwaway Filters High Efficiency supply fan motors Manual fresh air damper Economizer with dry bulb control Economizer with reference enthalpycontrol Economizer with differential(comparative) enthalpy control Inlet guide vanes on VAV units Variable frequency drives on VAVunits (with or without bypass) Service Valves Through-the-base electrical provision Factory mounted disconnect withexternal handle (non-fused) Factory powered 15A GFIconvenience outlet Field powered 15A GFI convenienceoutlet Trane Communication Interface (TCI) Ventilation Override Hinged Service Access Factory installed condenser coilguards Black epoxy coated condenser coil Sloped stainless steel evaporator coildrain pans CO2 sensors for space comfort control(SCC) or discharge air control (DAC) LonTalk Communication Interface(LCI-R) Clogged filter switch Discharge air temperature sensor (CVonly)5RT-PRC007-ENTrane 3-D Scroll CompressorSimple Design with 70% Fewer PartsFewer parts than an equal capacityreciprocating compressor meanssignificant reliability and efficiencybenefits.

4 The single orbiting scrolleliminates the need for pistons,connecting rods, wrist pins and parts lead to increased moving parts, less rotating massand less internal friction means greaterefficiency than Trane 3-D Scroll provides importantreliability and efficiency benefits. The 3-DScroll allows the orbiting scrolls to touchin all three dimensions, forming acompletely enclosed compressionchamber which leads to increasedefficiency. In addition, the orbiting scrollsonly touch with enough force to create aseal; there is no wear between the scrollplates. The fixed and orbiting scrolls aremade of high strength cast iron whichresults in less thermal distortion, lessleakage, and higher efficiencies. Themost outstanding feature of the 3-DScroll compressor is that slugging willnot cause failure. In a reciprocatingcompressor, however, the liquid or dirtcan cause serious Torque VariationThe 3-D Scroll compressor has a verysmooth compression cycle; torquevariations are only 30 percent of thatproduced by a reciprocating means that the scroll compressorimposes very little stress on the motorresulting in greater reliability.

5 Low torquevariation reduces noise and Gas Cooled MotorCompressor motor efficiency andreliability is further optimized with thelatest scroll design. Cool suction gaskeeps the motor cooler for longer life andbetter of two matched scroll plates the distinguishing feature of the illustrates low torque variation of3-D Scroll compressor vsreciprocating Design Through Testing andResearchWith over twenty years of developmentand testing, Trane 3-D Scrollcompressors have undergone more than400,000 hours of laboratory testing andfield operation. This work combined withover 25 patents makes Trane theworldwide leader in air conditioningscroll compressor andBenefitsRT-PRC007-EN6 Features andBenefitsEasy to Install, Service andMaintainBecause today s owners are very cost-conscious when it comes to service andmaintenance, the Trane voyager wasdesigned with direct input from servicecontractors. This valuable informationhelped to design a product that would getthe serviceman off the job quicker andsave the owner money.

6 voyager doesthis by offering:ReliaTel Controls (LCI-R)ReliaTel controls provide unit control forheating, cooling and ventilating utilizinginput from sensors that measure outdoorand indoor and Reliability are enhancedthrough ReliaTel control and logic: prevents the unit from short cycling,considerably improvingcompressor life. ensures that the compressor will runfor a specific amount of time whichallows oil to return for betterlubrication, enhancing the reliabilityof the commercial compressor. Quality and ReliabilityVoyager with ReliaTel reduces thenumber of components required tooperate the unit, thereby reducingpossibilities for component Makes Installing andServicing EasyReliaTel eliminates the need for fieldinstalled anti-shortcycle timer and timedelay relays. ReliaTel controls providethese functions as an integral part of theunit. The contractor no longer has topurchase these controls as options andpay to install wiring of the low voltage connectionsto the unit and the zone sensors is aseasy as 1-1, 2-2, and 3-3.

7 This simplifiedsystem makes it easier for the installer Makes Testing EasyReliael requires no special tools to runthe voyager unit through its place a jumper between Test 1and Test 2 terminals on the Low VoltageTerminal Board and the unit will walkthrough its operational stepsautomatically. 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 long as the unit has power and the system on LED is lit, ReliaTel isoperational. The light indicates that thecontrols are functioning features expanded diagnosticcapabilities when utilized with TraneIntegrated Comfort Zone Sensor options have centralcontrol panel lights which indicate themode the unit is in and possiblediagnostic information (dirty filters forexample).Other ReliaTel BenefitsThe ReliaTel built-in anti-shortcycle timer,time delay relay and minimum on timecontrol functions are factory tested toassure proper softens electrical spikes bystaging on fans, compressors Fallback is a benefit to thebuilding occupant.

8 If a component goesastray, the unit will continue to operate atpredetermined temperature Anticipation is a standardReliaTel feature. It functions continuouslyas ReliaTel and zone sensor(s) worktogether in harmony to provide muchtighter comfort control than conventionalelectro-mechanical Communication Interface (TCI)The TCI is available factory or fieldinstalled. When applied with ReliaTel, thismodule easily interfaces with the TraneIntegrated Comfort with LonTalk (LCI-R)The LonTalk Communication (LCI-R) forVoyager commercial offers a buildingautomation control system withoutstanding interoperability , which is an industry standard, isan open, secure and reliable networkcommunication protocol for controls,created by Echelon Corporation andadopted by the LonMark InteroperabilityAssociation. It has been adopted byseveral standards, such as: , theElectronic Industries Alliance (EIA) ControlNetwork Protocol Specification and ANSI/ASHRAE 135, part of the AmericanSociety of Heating, Refrigeration, and Air-Conditioning Engineer s BACnet controlstandard for allows application orproject engineers to specifiy the bestproducts of a given type, rather than oneindividual supplier s entire system.

9 Itreduces product training and installationcosts by standardizing communicationsacross systems allow buildingmanagers to monitor and controlVoyager commercial equipment with aTrane Tracer Summit or a 3rd partybuilding automation enables integration with many differentbuilding controls such as access/intrusionmonitoring, lighting, fire and smokedevices, energy management, and awide variety of sensors for temperature,pressure, humidity and occupancy additional information on LonMark,visit or Echelon, Frequency Drives (VFD)Variable Frequency Drives are factoryinstalled and tested to provide supply fanmotor speed modulation. VFD s, ascompared to inlet guide vanes ordischarge dampers, are quieter, moreefficient, and are eligible for utilityrebates. The VFD s are available with orwithout a bypass option. Bypass controlwill simply provide full nominal airflow inthe event of drive changeover-bypass VAVFor light commercial applications, Traneoffers constant volume (CV) VoyagerCommercial models with a changeover-bypass VAV the most advanced comfortmanagement systems, count on VAVT rane provides true pressureindependent variable air volume withVoyager commercial delivered VAV.

10 Thesystem is auto-configured to reduceprogramming and set-up time on the available only on sophisticatedlarger models, this voyager Commercialsystem can economically handle comfortrequirements for any zone in the system consists of: voyager commercial VAV packagedrooftops Up to 32 VariTrane VAV boxes withDDC (direct digital controls) VariTrac Central Control Panel (CCP)with Operator Display (OD)The VariTrac Central Control Panel acts asa communications hub by coordinatingthe actions of the VAV Rooftop and theVAV boxes. Single duct or fan poweredVAV boxes are available, along with anoption for factory-installed local heat. Formore details, see and Horizontal EconomizersThe economizers come with three controloptions dry bulb, enthalpy and differentialenthalpy. (Photo below shows the threefresh air hoods on the HorizontalDischarge Configuration).Features andBenefitsRT-PRC007-EN8 Features andBenefitsOutstanding Standard andOptional ComponentsDrum and Tube Heat ExchangerThe drum and tube heat exchanger isdesigned for increased efficiency andreliability and utilizes the sametechnology that has been incorporatedinto large commercial roof top units forover 20 heat exchanger is manufacturedusing optional stainless, or standardaluminized, steel with stainless steelcomponents for maximum durability.