RT-DS-10 April 1999 Packaged Rooftop Air Conditioners 23 to 42 Ton (81-148 kW) Voyager Commercial 50 HZ
Features and Benefits Over the years the Voyager product line has developed into the most complete line of commercial packaged units available. We were first with the Micro when we developed microelectronic unit controls and we move ahead again with Voyager Commercial products. Five new sizes from 23-42 tons (81-148 kW) meet the needs of the changing commercial rooftop marketplace.
Contents Standard Features Factory installed and commissioned microelectronic controls Trane 3-D Scroll compressors Dedicated downflow or horizontal configuration CV or VAV control FROSTAT coil frost protection on all units Supply air overpressurization protection on VAV units Supply airflow proving Emergency stop input Compressor lead-lag Occupied-unoccupied switching Timed override activation FC supply fans Two-inch (51 mm) standard efficiency filters Finish exceeds salt spra
Features and Benefits Trane 3-D® Scroll Compressor Simple Design with 70% Fewer Parts Fewer parts than an equal capacity reciprocating compressor means significant reliability and efficiency benefits. The single orbiting scroll eliminates the need for pistons, connecting rods, wrist pins and valves. Fewer parts lead to increased reliability. Fewer moving parts, less rotating mass and less internal friction means greater efficiency than reciprocating compressors.
Features and Benefits Quality and Reliability Forced Combustion Blower Negative Pressure Gas Valve Hot Surface Ignitor Drum and Tube Heat Exchanger Micro Controls For over 10 years Trane has been working with microprocessor controls in the applied equipment markets. These designs have provided the technology that has been applied to the Voyager units. The Micro provides unit control for heating, cooling and ventilating utilizing input from sensors that measure outdoor and indoor temperature.
Features and Benefits Ease of Installation Contractors look for lower installation (jobsite) costs. Voyagers conversionless units provide many time and money saving features. Conversionless Units 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.
Features and Benefits Serviceability Todays owners are more conscious of the cost of service and maintenance. Voyager was designed with input from service contractors. Their information helped us design a unit that would get the serviceman off the job quicker and save the owner money. Here is why Voyager can save money in service. Voyagers Simpler Design The Voyager design uses fewer parts than previous units. Since it is simpler in design, it is easier to diagnose.
Features and Benefits VariTrac CCP VariTrac Tranes changeover VAV System for light commercial applications is also available. Coupled with Voyager Commercial, it provides the latest in technological advances for comfort management systems and can allow thermostat control in every zone served by VariTrac. Downflow and Horizontal Economizers The economizers come with three options of controls (dry bulb, enthalpy and differential enthalpy).
Model Number Description TC 1,2 Digits 1, 2 Unit Function TC = DX Cooling, No Heat TE = DX Cooling, Electric Heat YC = DX Cooling, Natural Gas Heat Digit 3 Unit Airflow Design D = Downflow Configuration H = Horizontal Configuration Digits 4, 5, 6 Nominal Cooling Capacity 275 = 22.9 Tons (82 kW) 305 = 25.4 Tons (89 kW) 350 = 29.2 Tons (105 kW) 400 = 33.3 Tons (120 kW) 500 = 41.7 Tons (148 kW) Digit 7 Major Development Sequence A = First B = Second, Etc.
General Data Table 10-1 General Data 23-25 Tons TC*275 (23 Tons) TC*305 (25 Tons) Cooling Performance1 Nominal Gross Capacity(Btuh) 279,000 (81.8 kW) 304,000 (89.1 kW) System Power kW 26.1 30.2 kW Compressor Number/Type 2/Scroll 2/Scroll Nominal Motor HP (ea) 8.4/12.5 11.7 Motor RPM 2875 2875 Natural Gas Heat2 Low High Low High Heating Input(Btuh) 290,000 (85.0 kW) 500,000 (147 kW) 290,000 (85.0 kW) 500,000 (147 kW) First Stage 250,000 (73.3 kW) 425,000 (125 kW) 250,000 (73.
General Data Table 11-1 General Data 29-33 Tons Cooling Performance1 Nominal Gross Capacity(Btuh) System Power kW Compressor Number/Type Nominal Motor HP (ea) Motor RPM Natural Gas Heat2 Heating Input (Btuh) First Stage Heating Output(Btuh) First Stage Steady State Efficiency(%)3 No. Burners/No.
General Data Table 12-1 General Data 43 Tons Cooling Performance 1 Nominal Gross Capacity(Btuh) System Power kW Compressor Number/Type Nominal Motor HP (ea) Motor RPM Natural Gas Heat2 Heating Input(Btuh) First Stage Heating Output(Btuh) First Stage Steady State Efficiency(%)3 No. Burners/No.
Application Considerations Exhaust Air Options When is it necessary to provide building exhaust? Whenever an outdoor air economizer is used, a building generally requires an exhaust system. The purpose of the exhaust system is to exhaust the proper amount of air to prevent over or under-pressurization of the building. A building may have all or part of its exhaust system in the rooftop unit. Often, a building provides exhaust external to the air conditioning equipment.
Application Considerations Acoustical Considerations Proper placement of rooftops is critical to reducing transmitted sound levels to the building. The ideal time to make provisions to reduce sound transmissions is during the design phase. And the most economical means of avoiding an acoustical problem is to place the rooftop(s) away from acoustically critical areas. If possible, rooftops should not be located directly above areas such as: offices, conference rooms, executive office areas and classrooms.
Selection Procedure Selection of Trane commercial air conditioners is divided into five basic areas: 1 Cooling capacity 2 Heating capacity 3 Air delivery 4 Unit electrical requirements 5 Unit designation Factors Used In Unit Cooling Selection: 1 Summer design conditions 95 DB/ 76 WB (35/24.4°C), 95°F (35°C) entering air to condenser. 2 Summer room design conditions 76 DB/66 WB (24.4/18.9°C). 3 Total peak cooling load 270 MBh (79 kW) (22.5 tons). 4 Total peak supply cfm 10,000 cfm (4720 l/s).
Selection Procedure 1 Winter outdoor design conditions 0°F (17.7°C). 2 Total return air temperature 72°F (22.2°C). 3 Winter outside air minimum ventilation load and cfm 1,000 cfm and 87.2 MBh. 4 Peak heating load 150 MBh. Utilizing unit selection in the cooling capacity procedure. Mixed air temperature = RADB + % O.A. (OADB - RADB) = 72 + (0.10) (0-72) = 64.8°F. Supply air fan motor heat temperature rise = 20,600 Btu ÷ (1.085 x 10,000) cfm = 1.38°F. Mixed air temperature entering heat module = 64.
Performance Adjustment Factors Table 17-1 Enthalpy of Saturated Air Wet Bulb Temperature °F °C 40 4.4 41 5.0 42 5.5 43 6.1 44 6.7 45 7.2 46 7.8 47 8.3 48 8.9 49 9.4 50 10.0 51 10.6 52 11.1 53 11.7 54 12.2 55 12.8 56 13.3 57 13.9 58 14.4 59 15.0 60 15.6 61 16.1 62 16.7 63 17.2 64 17.8 65 18.3 66 18.9 67 19.4 68 20.0 69 20.6 70 21.1 71 21.7 72 22.2 73 22.8 74 23.3 75 23.9 Figure 17-1 Air Density Ratios Btu Per Lb. 15.23 15.70 16.17 16.66 17.15 17.65 18.16 18.68 19.21 19.75 20.30 20.86 21.44 22.02 22.
Performance Data Table 18-1 23 Ton Gross Cooling Capacities (MBh) CFM 6900 7500 8000 9000 10000 English Ambient Temperature Deg F 85 95 105 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 249 197 277 160 307 111 238 191 264 154 294 105 226 184 251 148 80 251 232 278 190 308 147 240 226 265 183 295 141 229 219 252 177 85 258 258 279 224 309 182 249 249 267 217 295 176 238 238 254 211 90 273 273 281 259 310
Performance Data Table 19-1 25 Ton Gross Cooling Capacities (MBh) English Ambient Temperature Deg F 85 95 105 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 273 215 303 175 336 122 260 208 289 168 321 115 247 200 275 161 7500 80 275 252 304 207 337 160 263 245 290 200 322 154 250 238 276 192 85 282 282 305 243 338 198 271 271 291 236 323 191 260 260 277 229 90 297 297 308 281 339 234 286 286 294 273 324 2
Performance Data Table 20-1 29 Ton Gross Cooling Capacities (MBh) English Ambient Temperature Deg F 85 95 105 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 322 264 356 207 394 143 307 256 340 200 376 135 292 248 324 192 8750 81 327 324 357 262 395 202 313 313 341 255 378 195 299 299 325 246 87 347 347 360 320 396 260 334 334 345 312 379 252 321 321 329 304 93 369 369 369 369 398 317 356 356 356 356 381 3
Performance Data Table 21-1 33 Ton Gross Cooling Capacities (MBh) CFM 10000 11000 12000 13000 14600 English Ambient Temperature Deg F 85 95 105 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 365 283 407 231 453 161 347 273 387 221 431 151 328 261 367 211 80 368 333 408 274 454 213 350 322 389 263 432 203 332 311 368 252 85 377 377 410 322 455 263 360 360 390 311 433 252 344 344 370 300 90 397 397 413 371
Performance Data Table 22-1 42 Ton Gross Cooling Capacities (MBh) CFM 12500 13500 14500 15500 16500 English Ambient Temperature Deg F 85 95 105 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 455 365 505 292 559 200 433 353 481 277 533 188 411 340 456 260 80 461 433 506 351 560 268 440 420 482 338 534 256 418 407 458 325 85 476 476 509 416 561 334 457 457 486 403 536 322 437 437 461 390 90 502 502 515 482
Performance Data Table 23-1 Electric Heat Air Temperature Rise (Degrees F) Heater Input (kW) 26.9 40.4 53.8 67.3 80.7 Total MBh 92 138 184 230 276 7000 12.1 18.2 24.2 30.2 8000 10.6 15.9 21.2 26.5 9000 9.4 14.1 18.8 23.5 10000 8.5 12.7 16.9 21.2 25.4 CFM 11000 12000 7.7 7.1 11.6 10.6 15.4 14.1 19.2 17.6 23.1 21.2 English 13000 14000 15000 16000 17000 9.8 9.1 8.5 7.9 7.5 13.0 12.1 11.3 10.6 10.0 16.3 15.1 14.1 13.2 12.5 19.5 18.1 16.9 15.9 14.9 Notes: 1.
Performance Data Table 24-1 Supply Fan Performance 23-29 Ton Static Pressure (in. wg) 1.00 1.25 1.50 RPM BHP RPM BHP RPM BHP 490. 2.29 544. 2.86 593. 3.46 493. 2.44 546. 3.03 595. 3.65 496. 2.61 548. 3.21 597. 3.85 500. 2.80 551. 3.41 599. 4.06 505. 3.00 554. 3.62 601. 4.29 511. 3.23 558. 3.85 604. 4.53 519. 3.49 563. 4.10 608. 4.78 528. 3.79 569. 4.37 611. 5.05 537. 4.11 575. 4.68 616. 5.35 547. 4.45 583. 5.02 622. 5.68 556. 4.79 593. 5.40 628. 6.04 565. 5.15 602. 5.81 636. 6.43 574. 5.53 612. 6.
Performance Data Figure 25-1 25
Performance Data Table 26-1 Supply Fan Performance 33 and 42 Ton Static Pressure (in. wg) 1.25 1.50 RPM BHP RPM BHP 487. 4.10 525. 4.75 496. 4.62 532. 5.30 506. 5.21 541. 5.92 517. 5.86 551. 6.60 527. 6.58 562. 7.35 539. 7.39 572. 8.18 554. 8.28 583. 9.10 569. 9.26 596. 10.11 584. 10.31 611. 11.21 English 0.25 0.50 0.75 1.00 1.75 2.00 2.25 2.50 SCFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 9996. 309. 1.80 360. 2.34 404. 2.88 447. 3.48 562. 5.41 597. 6.07 630. 6.75 662. 7.
Performance Data Figure 27-1 27
Performance Data Table 28-1 Component Static Pressure Drops (in wg) 50 Hz English Heating System CFM Gas Heat Electric Heat ID Coil Std Air Low High 1 Element 2 Element Adder 6670 0.07 0.05 0.04 0.05 0 7500 0.08 0.07 0.06 0.06 0 23 (80) 8330 0.10 0.08 0.07 0.08 0 9170 0.13 0.10 0.08 0.09 0 10000 0.15 0.12 0.10 0.11 0 7500 0.08 0.07 0.06 0.06 0 8330 0.10 0.08 0.07 0.08 0 25 (88) 9170 0.13 0.10 0.08 0.09 0 10000 0.15 0.12 0.10 0.11 0 8750 0.11 0.09 0.08 0.08 0.09 29 (103) 9580 0.14 0.11 0.09 0.10 0.
Performance Data Table 29-1 Supply Air Fan Drive Selections Nominal Tons (kW) 23 (80) 25 (88) 29 (103) 33 (118) 42 (146) 5 HP RPM 458 500 541 583 625 458 500 541 583 625 500 541 583 658 664 417 437 479 521 562 604 437 479 521 562 604 Drive No A B C A B C B 7.5 HP Drive RPM No 583 625* D E 583 625 D E 541 583 C D 417 437 479 H J K 437 479 J K 10 HP RPM Drive No 658** 664* F G 521 562 604 L M N 521 562 L M 15 HP RPM Drive No 604 N Note: *For YC gas/electrics only.
Electrical Data Electrical Service Sizing To correctly size electrical service wiring for your unit, find the appropriate calculations listed below. Each type of unit has its own set of calculations for MCA (Minimum Circuit Ampacity), MOP (Maximum Overcurrent Protection), and RDE (Recommended Dual Element fuse size). Read the load definitions that follow and then find the appropriate set of calculations based on your unit type.
Electrical Data Table 31-1 Electrical Service Sizing Data Model TC/TE/YC*275 TC/TE/YC*305 TC/TE/YC*350 TC/TE/YC*400 Electrical2 Characteristics 380-415/50/3 380-415/50/3 380-415/50/3 380-415/50/3 TC/TE/YC*500 380-415/50/3 Compressor Qty./ RLA Nominal HP (Ea.) 2/10,15 18.1/27.3 2/15,15 27.3 2/15,15 27.3 2/15,15 27.3 1/10 18.1 3/15 27.3 Fan Motors Supply LRA Ea.) 110/174 174 174 174 110 174 HP 5 5 5 7.5 FLA 13.1 13.1 13.1 16.6 No. 3 3 3 4 HP .75 .75 .75 .75 FLA (Ea.) 4.4 4.4 4.4 4.
Sequence of Operation 1 Supply Air Pressure Control Inlet Guide Vane Control Inlet guide vanes are driven by a modulating 2-10 vdc signal from the VAV Module. A pressure transducer measures duct static pressure, and the inlet guide vanes are modulated to maintain the supply air static pressure within an adjustable user-defined range. The range is determined by the supply air pressure setpoint and supply air pressure deadband, which are set through a unit mounted potentiometer.
VAV Units Only Morning Warm-up (MWU) Morning warm-up control (MWU) is activated whenever the unit switches from unoccupied to occupied and the zone temperature is at least 1.5°F below the MWU setpoint. When MWU is activated the VAV box output will be energized for at least 6 minutes to drive all boxes open, the inlet guide vanes are driven full open, and all stages of heat (gas or electric) are energized. When MWU is activated the economizer damper is driven fully closed.
Controls Both VAV and CV Units Control Sequences of Operation That are Common to Both VAV and CV Units Ventilation Override (VOM) Ventilation override allows an external system to assume control of the unit for the purpose of exhaust or pressurization. There are two inputs associated with ventilation override, the initiate input and the select input.
Dimensional Data Figure 35-1 23-29 Tons (TC, TE, YC Low Heat) Note: Dimensions in ( ) are mm 1 = 25.
Dimensional Data Figure 36-1 23-29 Tons (YC High Heat) Note: Dimensions in ( ) are mm 1 = 25.
Dimensional Data Figure 37-1 33-42 Tons (TC, TE, YC Low & High Heat) Note: Dimensions in ( ) are mm 1 = 25.
Weights Table 38-1 Approximate Operating Weights Lbs. Basic Unit Weights1 Weight of Optional Components Hi-Stat/ Hi Eff. Sup Fan Motor2 120 120 120 120 120 120 125 125 125 125 0-25% Man Damper 50 50 50 50 50 50 50 50 50 50 Inlet Guide Vanes 55 55 55 55 55 55 70 70 70 70 Thru-the Serv base Valves Elec. 11 6 11 6 11 6 11 6 11 6 11 6 18 6 18 6 18 6 18 6 Unit YC YC TC TE Baro. Power Model Low Heat High Heat Relief Exhaust Econ.
Field Installed Sensors Variable Air Volume SINGLE SETPOINT SENSOR WITH SYSTEM FUNCTION LIGHTS (BAYSENS021*) PROGRAMMABLE NIGHT-SETBACK SENSOR (BAYSENS020*) NOTE: Remote sensors are available for use with all zone sensors to provide remote sensing capabilities. Note: Dimensions in ( ) are mm 1 = 25.
Field Installed Sensors Constant Volume DUAL SETPOINT, MANUAL/AUTOMATIC CHANGEOVER SENSOR WITH SYSTEM FUNCTION LIGHTS (BAYSENS010*) WITHOUT LED STATUS INDICATORS (BAYSENS008*) SINGLE SETPOINT WITHOUT LED STATUS INDICATORS (BAYSENS006*) PROGRAMMABLE NIGHT-SETBACK SENSOR (BAYSENS019*) Note: Dimensions in ( ) are mm 1 = 25.
Field Installed Sensors Constant and Variable Air Volume Integrated Comfort System Sensors ZONE TEMPERATURE SENSOR W/TIMED OVERRIDE BUTTON (BAYSENS013*) ZONE TEMPERATURE SENSOR W/TIMED OVERRIDE BUTTON AND LOCAL SETPOINT ADJUSTMENT (BAYSENS014*) ALSO AVAILABLE SENSOR ONLY (BAYSENS017*) Color: Cool Pantone Gray TEMPERATURE SENSOR (BAYSENS016*) REMOTE MINIMUM POSITION POTENTIOMETER CONTROL (BAYSTAT023) NOTE: Remote sensors are available for use with all zone sensors to provide remote sensing capabiliti
Mechanical Specifications General The units shall be dedicated downflow or horizontal airflow. The operating range shall be between 115°F and 0°F (46.1°C and -17.8°C) in cooling as standard from the factory for all units. 60 HZ cooling performance shall be rated in accordance with ARI testing procedures.
Mechanical Specifications Variable Frequency Drives (VFDs) shall be factory installed and tested to provide supply fan motor speed modulation. The VFD shall receive a 2-10 VDC signal from the unit microprocessor based upon supply static pressure and shall cause the drive to accelerate or decelerate as required to maintain the supply static pressure setpoint. When subjected to high ambient return conditions (>100°F) (>37.
Tracer® Originated Data Command operating mode Host controllable functions: Supply fan Economizer Cooling stages enabled Heating stages enabled Emergency shutdown Minimum damper position Heating setpoint Cooling setpoint Supply air tempering enable/disable Slave mode (CV only) Tracer/local operation SAT setpoint Reset setpoint Reset amount MWU setpoint MWU enable/disable SAT reset type select Static pressure setpoint Static pressure deadband Daytime warm-up enable/disable
