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-ENNovember 2006 2005 American Standard 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.

2 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. 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 3 ContentsRT-PRC007-ENIntroductionFeatures and BenefitsApplication ConsiderationsSelection ProcedureModel Number DescriptionGeneral DataPerformance DataPerformance Adjustment FactorsControlsElectric PowerDimension and WeightsMechanical Specifications2410131719262557616473RT-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.

4 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 High Efficiency condenser coil 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)

5 Ventilation Override Hinged Service Access Factory installed condenser coilguards Black epoxy pre-coated standard orhigh efficiency 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.

6 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.

7 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.

8 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.

9 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. 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.

10 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.