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RT-DS-10
April 1999
Packaged
Rooftop
Air Conditioners
23 to 42 Ton (81-148 kW)
Voyager Commercial 50 HZ
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Features and Benefits Over the years the Voyager product Five new sizes from 23-42 tons (81-148 Voyager Commercials features and line has developed into the most kW) meet the needs of the changing benefits are comprised of cutting edge complete line of commercial packaged commercial rooftop marketplace. technologies like the reliable 3-D units available. We were first with the Scroll compressor, Trane engineered Our customers demand units that will Micro when we developed micro- microprocess
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Contents Contents Standard Features Optional Features Features and Benefits 2 Factory installed and commissioned Electric heat microelectronic controls Natural gas heat Trane 3-D Scroll compressors LP gas heat (kit only) Dedicated downflow or horizontal Power exhaust configuration Barometric relief Model Number Description 9 CV or VAV control High efficiency 2 (51 mm) throwaway FROSTAT coil frost protection on all filters units High efficiency 4 (102 mm) throwaway S
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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. Patented 3-D Scroll Compliance
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Features and Benefits Quality and Reliability Forced Combustion Blower Negative Pressure Gas Valve Hot Surface Ignitor Drum and Tube Heat Exchanger Micro Controls Drum and Tube Heat Exchanger The negative pressure gas valve will For over 10 years Trane has been The drum and tube heat exchanger is not allow gas flow unless the working with microprocessor controls designed for increased efficiency and combustion blower is operating. This is in the applied equipment markets. reliability and h
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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. Improved Airflow U-shaped airflow allows for improved Excellent Part-Load Efficiency static capabilities. The need for high T
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Features and Benefits Easy Access Low Voltage Serviceability Terminal Board Todays owners are more conscious of Voyagers Low Voltage Terminal Board the cost of service and maintenance. is external to the electrical control Voyager was designed with input from cabinet. It is extremely easy to locate service contractors. Their information and attach the thermostat wire. This is helped us design a unit that would get another cost and timesaving the serviceman off the job quicker and installation
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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). Trane Communication Interface or TCI is available
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Model Number Description TC D 400 A C 0 A 1 A 4 F D 1 A 1,2 3 4,5,6 7 8 9 10 11 12 13 14 15 16 17 Digit 16 System Control Digits 1, 2 Unit Function Digit 11 Exhaust 0 = None 1 = Constant Volume TC = DX Cooling, No Heat 2 = VAV Supply Air Temperature Control TE = DX Cooling, Electric Heat 1 = Barometric Relief (Available w/Economizer only) w/o Inlet Guide Vanes YC = DX Cooling, Natural Gas Heat 3 = VAV Sup
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General Data Table 10-1 General Data 23-25 Tons TC*275 (23 Tons) TC*305 (25 Tons) 1 Cooling Performance 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 2 Natural Gas Heat 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 (73.3
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General Data Table 11-1 General Data 29-33 Tons TC*350 (29 Tons) TC*400 (33 Tons) 1 Cooling Performance Nominal Gross Capacity(Btuh) 375,000 (105 kW) 409,000 (120 kW) System Power kW 34.0 42.5 Compressor Number/Type 2/Scroll 3/Scroll Nominal Motor HP (ea) 12.5 2@11.7/8.4 Motor RPM 2875 2875 2 Natural Gas Heat Low High Low High Heating Input (Btuh) 290,000 (85.0 kW) 500,000 (147 kW) 335,000 (98.2 kW) 670,000 (196 kW) First Stage 250,000 (73.3 kW) 425,000 (125 kW) 300,000 (87.9
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General Data Table 12-1 General Data 43 Tons TC*500 (42Tons) 1 Cooling Performance Nominal Gross Capacity(Btuh) 505,000 (148 kW) System Power kW 52.9 Compressor Number/Type 3/Scroll Nominal Motor HP (ea) 12.5 Motor RPM 2875 2 Natural Gas Heat Low High Heating Input(Btuh) 335,000 (98.2 kW) 670,000 (196 kW) First Stage 300,000 (87.9 kW) 600,000 (176 kW) Heating Output(Btuh) 271,350 (79.5 kW) 542,700 (159 kW) First Stage 243,500 (71.4 kW) 486,000 (166 kW) 3 Steady State E
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Application Considerations Exhaust Air Options Barometric Relief Dampers 5 When is it necessary to provide Barometric relief dampers consist of Bhp must be multiplied by the air building exhaust? gravity dampers which open with density ratio to obtain the actual increased building pressure. As the operating bhp. Whenever an outdoor air economizer is building pressure increases, the used, a building generally requires an In order to better illustrate this pressure in the unit return section also
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Application Considerations Acoustical Considerations Clearance Requirements Duct Design Proper placement of rooftops is critical The recommended clearances It is important to note that the rated to reducing transmitted sound levels to identified with unit dimensions should capacities of the rooftop can be met the building. The ideal time to make be maintained to assure adequate only if the rooftop is properly installed provisions to reduce sound serviceability, maximum capacity and in the field.
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Selection Procedure Selection of Trane commercial air Step 1 A summation of the peak Step 4 Determine total required unit conditioners is divided into five basic cooling load and the outside air cooling capacity: areas: ventilation load shows: 22.5 tons + 1.27 Required capacity = total peak load + 1 tons = 23.77 (79 kW + 4.45 kW = 83.45) O.A. load + supply air fan motor heat. Cooling capacity required unit capacity. From Table 19-1, From Figure 16-1, the supply air fan 2 25 ton (89 kW) unit
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Selection Procedure 1 Table 23-1 also shows an air To select the drive, enter Table 29-1 for Winter outdoor design conditions temperature rise of 21.2°F for 10,000 a 305 unit. Select the appropriate drive 0°F (17.7°C). cfm through the 90 kW heat module. for the applicable rpm range. Drive 2 selection letter E with a range of 625 Unit supply temperature at design Total return air temperature 72°F rpm, is required for 616 rpm. Where heating conditions = mixed air (22.2°C). altitude is signific
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Performance Adjustment Factors Table 17-1 Enthalpy of Saturated Air Figure 17-1 Air Density Ratios Wet Bulb Temperature °F °C Btu Per Lb. 40 4.4 15.23 41 5.0 15.70 42 5.5 16.17 43 6.1 16.66 44 6.7 17.15 45 7.2 17.65 46 7.8 18.16 47 8.3 18.68 48 8.9 19.21 49 9.4 19.75 50 10.0 20.30 51 10.6 20.86 52 11.1 21.44 53 11.7 22.02 54 12.2 22.62 55 12.8 23.22 56 13.3 23.84 57 13.9 24.48 58 14.4 25.12 59 15.0 25.78 60 15.6 26.46 61 16.1 27.15 62 16.7 27.85 63 17.2 28.57 64 17.8 29.31 65 18.3 30.06 66 1
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Performance Data Table 18-1 23 Ton Gross Cooling Capacities (MBh) English Ambient Temperature Deg F 85 95 105 115 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73 CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 249 197 277 160 307 111 238 191 264 154 294 105 226 184 251 148 280 99 213 177 238 141 265 93 6900 80 251 232 278 190 308 147 240 226 265 183 295 141 229 219 252 177 280 135 216 212 239 170 266
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Performance Data Table 19-1 25 Ton Gross Cooling Capacities (MBh) English Ambient Temperature Deg F 85 95 105 115 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73 CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 273 215 303 175 336 122 260 208 289 168 321 115 247 200 275 161 305 108 233 193 260 155 289 102 7500 80 275 252 304 207 337 160 263 245 290 200 322 154 250 238 276 192 306 147 237 231 261 185 29
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Performance Data Table 20-1 29 Ton Gross Cooling Capacities (MBh) English Ambient Temperature Deg F 85 95 105 115 Ent Entering Wet Bulb Temperature Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73 CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC 75 322 264 356 207 394 143 307 256 340 200 376 135 292 248 324 192 358 128 276 239 306 184 339 120 8750 81 327 324 357 262 395 202 313 313 341 255 378 195 299 299 325 246 359 187 285 285 308 238 34
