Preliminary Installation Operation Maintenance Series R Air-Cooled Helical Rotary Liquid Chillers Models RTAC 140-500 ton units (60 Hz) RTAC 140-400 ton units (50 Hz) January 2006 © American Standard Inc.
NOTICE: Warnings and Cautions appear at appropriate sections throughout this literature. Read these carefully. WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. CAUTION: Indicates a situation that may result in equipment or propertydamage only accidents.
Table of Contents General Information ............................................................................................. 7 Literature History.................................................................................................... 7 Unit Identification - Nameplates ............................................................................. 7 Unit Inspection ....................................................................................................... 8 Inspection Checklist .
Table of Contents 4 Leak Test and Evacuation ..................................................................................... Refrigerant and Additional Oil Charge .................................................................. Refrigerant Charge Determination........................................................................ Oil Charge Determination ..................................................................................... 58 60 60 61 Installation - Electrical...................
Table of Contents Modes Screen ....................................................................................................... 95 Chiller Screen ....................................................................................................... 101 Compressor Screen.............................................................................................. 101 Refrigerant Screen ...............................................................................................
Table of Contents Periodic Maintenance........................................................................................ 149 Weekly Maintenance ........................................................................................... 149 Maintenance Procedures .................................................................................. Refrigerant and Oil Charge Management ............................................................ R134a Field Charging Procedure ..............................
General Information Literature History RTAC-SVX001-EN (December 2000) New manual. RTAC-SVX01B-EN (September 2001) New manual describes installation, operation, and maintenance of RTAC units and the remote evaporator option. RTAC-SVX01C-EN (February 2002) Revised manual includes additional RTAC units to size 500 tons, new installation and maintenance material, and expanded CH530 diagnostics. RTAC-SVX01D-EN (July 2003) Revised manual for new evaporator design for 2 compressor units.
General information Unit Inspection When the unit is delivered, verify that it is the correct unit and that it is properly equipped. Compare the information which appears on the unit nameplate with the ordering and submittal information. Inspect all exterior components for visible damage. Report any apparent damage or material shortage to the carrier and make a “unit damage” notation on the carrier’s delivery receipt. Specify the extent and type of damage found and notify the appropriate Trane Sales Office.
General Information . Figure 2 Typical RTAC Unit Chilled water inlet and outlet openings are covered for shipment. Each compressor has a separate compressor motor starter. The RTAC series features Trane’s exclusive Adaptive Control ™ logic, which monitors the control variables that govern the operation of the chiller unit. Adaptive Control logic can adjust capacity variables to avoid chiller shutdown when necessary, and keep producing chilled water. The units feature two independent refrigerant circuits.
General information Table 1 General Data — 140-250 Ton 60 Hz Units - Standard Efficiency Size Type 140 STD 155 STD (tons) 2 70/70 2 85/70 (gallons) (liters) (gpm) (l/sec) (gpm) (l/sec) 29 111 193 12 709 45 32 121 214 14 785 50 Quantity of Coils Coil Length (inches) (mm) Coil Height (inches) (mm) Fins/Ft Number of Rows 4 156/156 3962/3962 42 1067 192 3 4 180/156 4572/3962 42 1067 192 3 Quantity Diameter (inches) (mm) (cfm) (m3/hr) (rpm) (rps) (ft/min) (m/s) 4/4 30 762 77000 130811 1140 19 895
General Information Table 2 General Data — 275- 500 Ton 60 Hz Units - Standard Efficiency Size Type Quantity Nominal Size 275 STD 300 STD 350 STD Compressor (tons) 3 85/85 100 3 100/100 100 (gallons) (liters) (gpm) (l/sec) (gpm) (l/sec) 60 229 309 20 1134 72 65 245 339 21 1243 78 8 180/108 4572/2743 42 1067 192 3 8 216/108 5486/2743 42 1067 192 3 10/6 30 762 147340 250307 1140 19 8954 45 12/6 30 762 165766 281610 1140 19 8954 45 3 120/120 100 400 STD 450 STD 500 STD 4 100/100 100/100 4
General information Table 3 General Data — 140-400 Ton 60 Hz Units - High Efficiency Size Type 140 HIGH 155 HIGH 170 HIGH 185 HIGH 2 70/70 2 85/70 2 85/85 2 100/85 Water Storage (gallons) (liters) Min. Flow (gpm) (l/sec) Max.
General Information Table 4 General Data - 120-400 Ton 50 Hz Units-Standard Efficiency Size Type 140 STD 155 STD 170 STD 185 STD 2 70/70 2 85/70 2 85/85 2 100/85 29 110 192 12 702 44 32 120 221 13 778 49 33 126 200 13 735 46 35 133 215 14 789 50 4 4 4 180/156 4512/ 3962 42 1067 192 3 180/180 4572/ 4512 42 1067 192 3 216/180 5486/ 4572 42 1067 192 3 4/4 (inches) 30 (mm) 762 Total (cfm) 63346 Airflow (m3/hr) 107615 Nominal (rpm) 950 Fan Speed (rps) 15.
General information Table 5 General Data - 120-400 Ton 50 Hz Units-High Efficiency Size Type 140 HIGH 155 HIGH 170 HIGH 185 HIGH 200 250 HIGH HIGH Compressor Quantity Nominal Size (tons) 2 70/70 2 85/70 2 85/85 2 100/85 Water Storage 33 126 200 13 735 46 35 133 215 14 789 50 38 145 239 15 875 55 38 145 215 14 789 50 Qty of Coils 4 Coil Length (inches) 180/180 (mm) 4572/ 4572 Coil Height (inches) 42 (mm) 1067 Fins/Ft 192 Number of Rows 3 4 216/180 5486/ 4572 42 1067 192 3 4 216/216 5486/
General Information Figure 3 Unit Dimensions 185-200 Ton Standard Efficiency, 60 Hz and 155, 170 Ton, High Efficiency, 50 and 60 Hz RTAC-SVX01F-EN 15
Figure 4 16 Unit Dimensions 225-250 Ton Standard Efficiency, 60 Hz and 185-200 Ton, High Efficiency, 50 and 60 Hz RTAC-SVX01F-EN
Figure 5 Unit Dimensions 225-250 Ton High Efficiency, 60 Hz RTAC-SVX01F-EN 17
Figure 6 18 Unit Dimensions 250-275 Ton Standard Efficiency, 50 Hz and 250 Ton High Efficiency, 50 Hz and 275 Ton Standard Efficiency, 60 Hz RTAC-SVX01F-EN
Figure 7 Unit Dimensions 275 Ton High Efficiency, 50 and 60 Hz; 300 Ton, Standard Efficiency, 50 and 60 Hz and 350 Ton, Standard Efficiency 60 Hz RTAC-SVX01F-EN 19
Figure 8 20 Unit Dimensions 300 Ton High Efficiency, 50 and 60 Hz RTAC-SVX01F-EN
Figure 9 Unit Dimensions 350-400 Ton Standard Efficiency, Hz and 400 Ton, Standard Efficiency, 60 Hz and 350 Ton High Efficiency, 50 and 60Hz RTAC-SVX01F-EN 21
Figure 10 22 Unit Dimensions 450-500 Ton Standard Efficiency, 60 Hz and 375-400 Ton, High Efficiency, 50 Hz and 400 Ton High Efficiency, 60 Hz RTAC-SVX01F-EN
Figure 11 Unit Dimensions of Condenser/Compressor Unit for Remote Evaporator Option RTAC-SVX01F-EN 23
Figure 12 24 Unit Dimensions for Remote Evaporator 140-170 Ton Standard Efficiency and 140 Ton High Efficiency RTAC-SVX01F-EN
Figure 13 Unit Dimensions for Remote Evaporator185-250 Ton Standard Efficiency and 155-200 Ton High Efficiency RTAC-SVX01F-EN 25
Model Number Coding System The model numbers for the unit and the starter are composed of numbers and letters that represent features of the equipment. Shown in the following table is a sample of typical unit model number and the coding system for each. Each position, or group of positions, in the model number is used to represent a feature. For example, in the first table, position 08 of the unit model number, Unit Voltage, contains the number “4”.
Digit 1-4 Unit Model RTAC Air Cooled Series R® chiller Digit 5-7 Unit Nominal Capacity 140 140 Nominal Tons 155 155 Nominal Tons 170 170 Nominal Tons 185 185 Nominal Tons 200 200 Nominal Tons 225 225 Nominal Tons 250 250 Nominal Tons 275 275 Nominal Tons 300 300 Nominal Tons 350 350 Nominal Tons 375 375 Nominal Tons 400 400 Nominal Tons 450 450 Nominal Tons 500 500 Nominal Tons Digit 8 Unit Voltage A 200V/60Hz/3Ph power K 220V/50Hz/3 Ph power C 230V/60Hz/3Ph power J 380V/60Hz/3Ph power D 400V/50Hz/3Ph p
Installation - Mechanical Installation Responsibilities Generally, the contractor must do the following when installing an RTAC unit: • Install unit on a flat foundation, level (within 1/4” [6 mm] across the length and width of the unit), and strong enough to support unit loading. • Install unit per the instructions contained in the Installation-Mechanical and Installation-Electrical sections of this manual. • Install any optional sensors and make electrical connections at the CH530.
Installation - Mechanical Storage Extended storage of the outdoor unit prior to installation requires the following precautionary measures: 1. Store the outdoor unit in a secure area. 2. At least every three months (quarterly), check the pressure in the refrigerant circuits to verify that the refrigerant charge is intact. If it is not, contact a qualified service organization and the appropriate Trane sales office. 3. Close the discharge and liquid line isolation valves.
Installation - Mechanical 1. Lifting chains/cables will not be the same length. Adjust to keep unit level while lifting. 2. Do not fork lift unit. 3. Weights are typical for units with R-134a charge. Figure 15 Lifting the Unit (Package and Remote) 30-36-foot Base 1. Lifting chains/cables will not be the same length. Adjust to keep unit level while lifting. 2. Do not fork lift unit. 3. Weights are typical for units with R-134a charge.
Installation - Mechanical : Table 6 Lifting Weights and CG Dimensions (Refer to Figure 14 - Figure 15) Unit 140 Ton 50 Hz High Eff 140 Ton 50 Hz Std Eff 140 Ton 60 Hz High Eff 140 Ton 60 Hz Std Eff 155 Ton 50 Hz High Eff 155 Ton 50 Hz Std Eff 155 Ton 60 Hz High Eff 155 Ton 60 Hz Std Eff 170 Ton 50 Hz High Eff 170 Ton 50 Hz Std Eff 170Ton 60 Hz High Eff 170 Ton 60 Hz Std Eff 185 Ton 50 Hz High Eff 185 Ton 50 Hz Std Eff 185 Ton 60 Hz High Eff 185 Ton 60 Hz Std Eff 200 Ton 50 Hz High Eff 200 Ton 50 Hz Std E
Installation - Mechanical Table 6 Lifting Weights and CG Dimensions (Refer to Figure 14 - Figure 15) Unit 275 Ton 50 Hz Std Eff 275 Ton 60 Hz High Eff 275 Ton 60 Hz Std Eff 300 Ton 50 Hz High Eff 300 Ton 50 Hz Std Eff 300 Ton 60 Hz High Eff 300 Ton 60 Hz Std Eff 350 Ton 50 Hz High Eff 350 Ton 50 Hz Std Eff 350 Ton 60 Hz High Eff 350 Ton 60 Hz Std Eff 375 Ton 50 Hz High Eff 375 Ton 50 Hz Std Eff 400 Ton 50 Hz High Eff 400 Ton 50 Hz Std Eff 400 Ton 60 Hz High Eff 400 Ton 60 Hz Std Eff 450 Ton 60 Hz Std Eff
Installation - Mechanical Table 6 Lifting Weights and CG Dimensions (Refer to Figure 14 - Figure 15) Unit 155 Ton 60 Hz Std Eff 170 Ton 50 Hz High Eff 170 Ton 50 Hz Std Eff 170Ton 60 Hz High Eff 170 Ton 60 Hz Std Eff 185 Ton 50 Hz High Eff 185 Ton 50 Hz Std Eff 185 Ton 60 Hz High Eff 185 Ton 60 Hz Std Eff 200 Ton 50 Hz High Eff 200 Ton 50 Hz Std Eff 200 Ton 60 Hz High Eff 200 Ton 60 Hz Std Eff 225 Ton 60 Hz Std Eff 250 Ton 60 Hz Std Eff 250 Ton 50 Hz High Eff 250 Ton 50 Hz Std Eff 275 Ton 50 Hz High Eff 2
Installation - Mechanical Table 6 Lifting Weights and CG Dimensions (Refer to Figure 14 - Figure 15) Unit 350 Ton 50 Hz Std Eff 350 Ton 60 Hz High Eff 350 Ton 60 Hz Std Eff 375 Ton 50 Hz High Eff 375 Ton 50 Hz Std Eff 400 Ton 50 Hz High Eff 400 Ton 50 Hz Std Eff 400 Ton 60 Hz High Eff 400 Ton 60 Hz Std Eff 450 Ton 60 Hz Std Eff 500 Ton 60 Hz Std Eff 140 Ton 50 Hz High Eff 140 Ton 50 Hz Std Eff 140 Ton 60 Hz High Eff 140 Ton 60 Hz Std Eff 155 Ton 50 Hz High Eff 155 Ton 50 Hz Std Eff 155 Ton 60 Hz High Eff
Installation - Mechanical Table 6 Lifting Weights and CG Dimensions (Refer to Figure 14 - Figure 15) Unit 185 Ton 60 Hz Std Eff 200 Ton 50 Hz High Eff 200 Ton 50 Hz Std Eff 200 Ton 60 Hz High Eff 200 Ton 60 Hz Std Eff 225 Ton 60 Hz Std Eff 250 Ton 60 Hz Std Eff 140 Ton 50 Hz High Eff 140 Ton 50 Hz Std Eff 140 Ton 60 Hz High Eff 140 Ton 60 Hz Std Eff 155 Ton 50 Hz High Eff 155 Ton 50 Hz Std Eff 155 Ton 60 Hz High Eff 155 Ton 60 Hz Std Eff 170 Ton 50 Hz High Eff 170 Ton 50 Hz Std Eff 170Ton 60 Hz High Eff
Installation - Mechanical Table 6 Lifting Weights and CG Dimensions (Refer to Figure 14 - Figure 15) Unit 200 Ton 60 Hz Std Eff 225 Ton 60 Hz Std Eff 250 Ton 60 Hz Std Eff W1 W2 W3 W4 W5 W6 W7 W8 lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg lbs kg 3528 1600 4031 1828 4092 1856 3974 1802 4600 2086 4615 2094 3007 1364 3473 1575 3527 1600 3453 1566 4042 1833 4050 1837 NA NA NA NA NA NA NA NA NA NA NA NA Table 7 Shipping Weight lbs kg Xcg Ycg in mm in mm 13962 6333 1
Installation - Mechanical Table 8 Unit Isolators Tonnage Efficiency Frequency Unit Type Condenser Fin Material Isolator Part Number Quantity 140 140 140 155 155 155 170 170 170 185 185 185 185 185 185 185 185 200 200 200 200 200 200 200 200 225 225 225 225 250 250 250 250 250 250 275 300 350 350 350 375 400 450 500 Std/High Std/High Std/High Std/High Std/High Std/High Std/High Std/High Std/High Std High Std High Std High Std High Std High Std High Std High Std High Std Std Std High Std Std Std Hig
Installation - Mechanical Foundation Provide rigid, non-warping mounting pads or a concrete foundation of sufficient strength and mass to support the outdoor unit operating weight (i.e., including completed piping, and full operating charges of refrigerant, oil and water). Refer to Table 1 though Table 5 in the General Information section for unit operating weights. Once in place, the outdoor unit must be level within 1/ 4" (6 mm) over its length and width.
Installation - Mechanical Figure 19 Recommended Unit Clearances 18-21 foot bases Figure 20 Recommended Unit Clearances 30-45 foot bases RTAC-SVX01F-EN 39
Installation - Mechanical Figure 21 Recommended Remote Evaporator Unit Clearances 15-30 foot bases Figure 22 Recommended Evaporator Clearance Unobstructed flow of condenser air is essential to maintain chiller capacity and operating efficiency. When determining unit placement, give careful consideration to assuring a sufficient flow of air across the condenser heat transfer surface.
Installation - Mechanical Debris, trash, supplies etc. should not be allowed to accumulate in the vicinity of the unit. Supply air movement may draw debris into the condenser coil, blocking spaces between coil fins and causing coil starvation. Special consideration should be given to low ambient units. Condenser coils and fan discharge must be kept free of snow or other obstructions to permit adequate airflow for satisfactory unit operation.
Installation - Mechanical Provide shutoff valves in lines to the gauges to isolate them from the system when they are not in use. Use rubber vibration eliminators to prevent vibration transmission through the water lines. If desired, install thermometers in the lines to monitor entering and leaving water temperatures. Install a balancing valve in the leaving water line to control water flow balance.
Installation - Mechanical 2. To prevent switch fluttering, remove all air from the water system. NOTE: The CH530 provides a 6-second time delay after a “loss-of-flow” diagnostic before shutting the unit down. Contact a qualified service representative if nuisance machine shutdowns persist. 3. Adjust the switch to open when water flow falls below the minimum flow rate. Evaporator data is given in the General Information section. Flow switch contacts are closed on proof of water flow. 4.
Installation - Mechanical Evaporator Water Pressure Drop RTAC 250 - 500 Ton Water-Side Pressure Drop vs Flow Rate 100.0 250S (50Hz) 275S Pressure Drop (ft H2O) 300S, 250H (50Hz) 350S (60 Hz), 275H, 300H 350S (50Hz) 10.0 375S (50Hz) 400S, 350H 450S (60Hz), 375H (50Hz) 500S (60Hz), 400H 1.
Installation - Mechanical Neither salt nor brackish water is recommended for use in Trane air-cooled Series R® chillers. Use of either will lead to a shortened life to an indeterminable degree. The Trane Company encourages the employment of a reputable water treatment specialist, familiar with local water conditions, to assist in this determination and in the establishment of a proper water treatment program.
Installation - Mechanical Water Pressure Relief Valves CAUTION Shell Damage! To prevent shell damage, install pressure relief valves in the evaporator water system. Install a water pressure relief valve in the evaporator inlet piping between the evaporator and the inlet shutoff valve, as shown in Figure 25. Water vessels with close-coupled shutoff valves have a high potential for hydrostatic pressure buildup on a water temperature increase.
Installation - Mechanical Important 1. Additional glycol beyond the recommendations will adversely effect unit performance. The unit efficiency will be reduced and the saturated evaporator temperature will be reduced. For some operating conditions this effect can be significant. 2. If additional glycol is used, then use the actual % glycol to establish the low refrigerant cutout setpoint. 3. The minimum low refrigerant cutout setpoint allowed is -5 deg F.
Installation - Mechanical Table 9 Glycol Recommendations Ethylene Glycol DT 4 6 8 [F] [C] -15 -14 -13 10 12 14 16 Propylene Glycol 4 6 8 10 12 14 16 -12 -11 -10 -9 -15 -11 -10 -9 -14 -13 -12 Leaving Water Temperature (F/C) 38 -5 5 5 5 6 --6 6 7 7 8 -3 34 -11 11 11 12 ---13 13 15 17 --1 30 -15 16 17 18 ---19 21 -----1 28 -18 18 19 ----22 ------2 26 -20 21 22 ----25 ------3 24 -22 23 26 -----------4 22 -24 26 ------------6 20 -26 30 ------------7 18 -29 -------------8 16 ------31 ------
Installation - Mechanical Remote Evaporator Option The RTAC 140-250 ton outdoor unit with the Remote Evaporator option is shipped as two pieces: the outdoor unit (condensing) and the evaporator. Short suction line connections are provided with the outdoor condensing unit. The remote evaporator is shipped complete, with factory-mounted electronic expansion valves, water temperature sensors, suction pressure transducers, liquid level control sensors, all factory wired to a ribbon cable.
Installation - Mechanical Remote Evaporator Option 7. Figure 26, drawing 1 depicts an installation where the remote evaporator elevation is the same as that of the outdoor condensing unit. The suction and liquid lines are horizontal or down flowing only. The suction and liquid lines can be put under ground or in a trench. The temperature of the suction lines must never exceed the temperature of the compressor. The line can be below the compressors a maximum of 15 ft. 8.
Installation - Mechanical Remote Evaporator Option Figure 26 Remote Evaporator Installations RTAC-SVX01F-EN 51
Installation - Mechanical Remote Evaporator Option Figure 27 52 Circuit Identification RTAC-SVX01F-EN
Installation - Mechanical Remote Evaporator Option R TAC 140-250 To n R em o te E vap o rato r L iq u id L in e S izes 25 50 75 100 125 150 175 200 225 250 275 300 Total Equiv. Length (ft) 4 0 -5 0 F L vg . W a te r 25 50 75 100 125 150 175 200 225 250 275 300 Total Equiv. Length (ft) 4 0 -5 0 F L vg . W a te r Table 11 25 50 75 100 125 150 175 200 225 250 275 300 H eig h t (ft) 11 to 15 16 to 20 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.375 1.625 1.375 1.625 1.625 1.
Installation - Mechanical Remote Evaporator Option Table 12 Equivalent Lengths of Non-Ferrous Valves and Fittings (feet) Line Size Inches OD 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8 Globe Valve 87 102 115 141 159 185 216 248 Short Angle Valve 29 33 34 39 44 53 66 76 Short Radius ELL 2.7 3.2 3.8 5.2 6.5 8 10 12 Long Radius ELL 1.9 2.2 2.6 3.4 4.2 5.1 6.3 7.3 Liquid Line Sizing Steps The steps to compute liquid line size are as follows: 1. Compute the actual length of field installed piping. 2.
Installation - Mechanical Remote Evaporator Option Required Length in Feet of Field Installed Suction Line Accumulator 70 Ton Circuit (1) 85 Ton Circuit 100 Ton Circuit 120 Ton Circuit 1 3/8" O.D. 1 5/8" O.D. 2 1/8" O.D. 1 3/8" O.D. 1 5/8" O.D. 2 1/8" O.D. 1 5/8" O.D. 2 1/8" O.D. 2 5/8" O.D. 1 5/8" O.D. 2 1/8" O.D. 2 5/8" O.D.
Installation - Mechanical Remote Evaporator Option For this example, refer to Table 11, Table 12 and Figure 28. Assume a 70 ton circuit and a leaving water temperature of 49 degrees F. 1. From Figure 28, the actual length of field installed piping is: 80 + 8 + 8 + 21 = 117 feet 2. Estimate equivalent line length: 117 feet x 1.5 = 175 feet 3. From Table 11 for a 70 ton circuit, for 175 equivalent feet the OD is 1.375 inches. Note: use the 0 ft. column since the condenser is above the evap 4.
Installation - Mechanical Remote Evaporator Option Suction Accumulator Sizing Use Table 13 to calculate length and size of the required suction accumulator(s). Example of Suction Accumulator Line Sizing Use Figure 28 and the same assumptions from the liquid line sizing example to calculate the suction accumulator line size and length. In this case the accumulator is installed at the evaporator. 1. Use the 70 ton circuit column. 2. From the liquid line sizing example, use a field installed liquid line of: 1.
Installation - Mechanical Remote Evaporator Option Refrigerant Sensors All necessary refrigerant devices, transducers and solenoids are factory installed and wired to the evaporator terminal box. Refrigerant Pressure Relief Valve Venting WARNING Hazardous Gases! Consult local regulations for any special relief line requirements. Refrigerant vented into a confined equipment room could displace available oxygen to breathe, causing possible asphyxiation or other serious health risks.
Installation - Mechanical Remote Evaporator Option WARNING Hazard of Explosion! Use only dry nitrogen with a pressure regulator for pressurizing unit. Do not use acetylene, oxygen or compressed air or mixtures containing them for pressure testing. Do not use mixtures of a hydrogen containing refrigerant and air above atmospheric pressure for pressure testing as they may become flammable and could result in an explosion.
Installation - Mechanical Remote Evaporator Option Figure 30 Field Wiring between Remote Evaporator and Condensing Unit Refrigerant and Additional Oil Charge Refrigerant Charge Determination The approximate amount of refrigerant charge required by the system must be determined by referring to Table 16 and must be verified by running the system and checking subcooling. Table 16 Field Installed Piping Charge Pipe O.D.
Installation - Mechanical Remote Evaporator Option 1. To determine the appropriate charge, first refer to the General Data Tables in Section 1 to establish the required charge without the field-installed piping. 2. Next, determine the charge required for the field-installed piping by referring to Table 16. 3. Sum the values of step 1 and step 2 to determine the circuit charge. NOTE: The amounts of refrigerant listed in Table 16 are per 100 feet of pipe.
Installation - Electrical General Recommendations All wiring must comply with local codes and the National Electric Code. Typical field wiring diagrams are included at the end of the manual. Minimum circuit ampacities and other unit electrical data are on the unit nameplate and in Table 17 though Table 19. See the unit order specifications for actual electrical data. Specific electrical schematics and connection diagrams are shipped with the unit.
Installation - Electrical Table 17 Unit Electrical Data for Std. Efficiency at All Ambient Operation Unit Wiring Max.
Installation - Electrical Table 17 Unit Electrical Data for Std. Efficiency at All Ambient Operation Unit Wiring Max.
Installation - Electrical Table 17 Unit Electrical Data for Std. Efficiency at All Ambient Operation Unit Wiring Max.
Installation - Electrical Table 17 Unit Electrical Data for Std. Efficiency at All Ambient Operation Unit Wiring Max. Fuse, # of HACR Power Breaker or Unit Rated Conns MCA (3) MOP (11) Size Voltage (1) Ckt1/Ckt2 Ckt1/Ckt2 NA RTAC 200/60/3 1 450 200/60/3 2 1124/947 1200/1200 Motor Data Compressor (Each) Rec. Time Delay or RDE (4) RLA (5) Ckt1/Ckt2 Qty Ckt1/Ckt2 Fans (Each) XLRA (8) Ckt1/Ckt2 YLRA (8) Ckt1/Ckt2 Qty.
Installation - Electrical Table 18 Unit Size RTAC 140 RTAC 155 RTAC 170 RTAC 185 Unit Electrical Data for High Efficiency at Std.
Installation - Electrical Table 18 Unit Size RTAC 200 RTAC 225 RTAC 250 RTAC 275 68 Unit Electrical Data for High Efficiency at Std.
Installation - Electrical Table 18 Unit Size RTAC 300 RTAC 350 RTAC 375 Unit Electrical Data for High Efficiency at Std. Ambient Operation Rated Voltage 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 400/50/3 400/50/3 200/60/3 200/60/3 Unit Wiring Max.
Installation - Electrical Table 18 Unit Size RTAC 400 Unit Electrical Data for High Efficiency at Std. Ambient Operation Rated Voltage Unit Wiring Max. Fuse, # of HACR Power MCA (3) Breaker or Conns Ckt1/ MOP (11) (1) Ckt2 Ckt1/Ckt2 Motor Data Compressor (Each) Rec. Time Delay or RDE (4) Ckt1/Ckt 2 RLA (5) Qty Ckt1/Ckt2 Fans (Each) XLRA (8) Ckt1/Ckt2 YLRA (8) Ckt1/Ckt2 Qty.
Installation - Electrical Table 19 Unit Size RTAC 140 RTAC 155 RTAC 170 RTAC 185 Unit Electrical Data for High Efficiency at High Ambient Operation Rated Voltage 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 400/50/3 400/50/3 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 400/50/3 400/50/3 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 400/50/3 400/50/3 200/60/3 200/60/3 23
Installation - Electrical Table 19 Unit Size RTAC 200 RTAC 225 RTAC 250 RTAC 275 72 Unit Electrical Data for High Efficiency at High Ambient Operation Rated Voltage 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 400/50/3 400/50/3 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 200/60/3 200/60/3 230/60/3 230/60/3 380/60/3 380/60/3 460/60/3 460/60/3 575/60/3 575/60/3 400/50/3 400/50/3 200/60/3 200/60/3 Unit Wiring Max
Installation - Electrical Table 19 Unit Size RTAC 300 RTAC 350 RTAC 375 Unit Electrical Data for High Efficiency at High Ambient Operation Rated Voltage 200/60/3 200/60/3 Unit Wiring Max.
Installation - Electrical Table 19 Unit Size RTAC 400 Unit Electrical Data for High Efficiency at High Ambient Operation Rated Voltage 200/60/3 200/60/3 Unit Wiring Max.
Installation - Electrical Installer-Supplied Components Customer wiring interface connections are shown in the electrical schematics and connection diagrams that are shipped with the unit. The installer must provide the following components if not ordered with the unit: • Power supply wiring (in conduit) for all field-wired connections. • All control (interconnecting) wiring (in conduit) for field supplied devices. • Fused-disconnect switches or circuit breakers. • Power factor correction capacitors.
Installation - Electrical 115 volt field-provided connections (either control or power) are made through knockouts on the lower left side of the panel (Figure 31). Additional grounds may be required for each 115 volt power supply to the unit. Green lugs are provided for 115V customer wiring.
Installation - Electrical CAUTION Heat Tape! Control panel main processor does not check for loss of power to the heat tape nor does it verify thermostat operation. A qualified technician must verify power to the heat tape and confirm operation of the heat tape thermostat to avoid catastrophic damage to the evaporator. A convenience outlet is also optional, which shares the same power supply as the heaters on 140-250 ton units.
Installation - Electrical Table 20 Pump Relay Operation Chiller Mode Auto Ice Building Tracer Override Stop Ice Complete Diagnostics Relay Operation Instant close Instant close Close TImed Open Instant Open Instant Open NOTE: Exceptions are listed below. When going from Stop to Auto, the EWP relay is energized immediately. If evaporator water flow is not established in 4 minutes and 15 sec., the CH530 de-energizes the EWP relay and generates a non-latching diagnostic. If flow returns (e.g.
Installation - Electrical Table 21 Alarm and Status Relay Output Configuration Table Description This output is true whenever there is any diagnostic effecting Refrigerant Circuit 1, whether latching or automatically clearing, including diagnostics affecting the entire chiller. This classification does not include informational diagnostics.
Installation - Electrical Silver or gold-plated contacts are recommended. These customer-furnished contacts must be compatible with 24 VDC, 12 mA resistive load. External Auto/Stop If the unit requires the external Auto/Stop function, the installer must provide leads from the remote contacts 5K15 to the proper terminals of the LLID 1U4 on the control panel. The chiller will run normally when the contacts are closed.
Installation - Electrical permit the ice building mode to be reentered until the unit has been switched out of ice building mode (open 5K18 contacts) and then switched back into ice building mode (close 5K18 contacts.) In ice building, all limits (freeze avoidance, evaporator, condenser, current) will be ignored. All safeties will be enforced.
Installation - Electrical If the ECLS input develops an open or short, the LLID will report either a very high or very low value back to the man processor. This will generate an informational diagnostic and the unit will default to using the Front Panel (DynaView) Current Limit Setpoint. The TechView Service Tool must be used to set the input signal type from the factory default of 2-10 VDC to that of 4-20 mA current.
Installation - Electrical • Start Reset Set Points. • Maximum Reset Set Points. The equations for each type of reset are as follows: Return CWS' = CWS + RATIO (START RESET - (TWE - TWL)) and CWS' > or = CWS and CWS' - CWS < or = Maximum Reset Outdoor CWS' = CWS + RATIO * (START RESET - TOD) and CWS' > or = CWS and CWS' - CWS < or = Maximum Reset where CWS' is the new chilled water set point or the "reset CWS" CWS is the active chilled water set point before any reset has occurred, e.g.
Installation - Electrical When the chiller is not running the CWS is reset immediately (within one minute) for Return Reset and at a rate of 1 degree F every 5 minutes for Outdoor Reset. The chiller will start at the Differential to Start value above a fully reset CWS or CWS' for both Return and Outdoor Reset. Communications Interface options Optional Tracer Communications Interface This option allows the Tracer CH530 controller to exchange information (e.g.
Installation - Electrical Table 24 LonTalk Points List LonTalk Communications Interface Inputs Variable type Chiller Enable/Disable binary start(1)/stop(0) Chilled Water Setpoint analog temperature Current Limit Setpoint analog % current Chiller Mode Note 1 Outputs Variable type Outputs Variable type Chiller On/Off binary on(1)/off(0) Active Chilled Water Setpoint analog temperature Percent RLA analog % current Active Current Limit Setpoint analog % current Leaving Chilled Water Temperature analog tempera
Operating Principles This section contains an overview of the operation and maintenance of RTAC units equipped with CH530 control systems. It describes the overall operating principles of the RTAC design. Refrigeration Cycle The refrigeration cycle of the RTAC chiller is similar to that of the RTAA air cooled water chiller. The exception is that the evaporating and condensing temperatures have been increased to allow for optimization of the chiller and reduced foot print.
Operating Principles Figure 34 System Schematic RTAC-SVX01F-EN 87
Operating Principles Refrigerant R134a The RTAC chiller uses environmentally friendly R134a. Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures.
Operating Principles some fans are shut off to maintain the pressure differential. Fan staging depends on the chiller load, evaporator pressure, condenser effectiveness, ambient temperature, and numbers and sizes of fans installed on the circuit. The algorithm pre-starts fans (based on ambient and water temperatures) when a circuit starts the compressor. (For rare conditions such as during some pull-downs, a steady fan state would either violate the 60 psid (4.
Operating Principles Oil that gets past the oil separators flows through the condenser, subcooler and expansion valve into the evaporator. This oil is collected in the pool of refrigerant that is maintained in the bottom of the evaporator. A small amount of oil and refrigerant from this pool (state 4b) is returned through a line that is connected to the compressor down stream of the motor.
Controls Interface CH530 Communications Overview The Trane CH530 control system that runs the chiller consists of several elements: • The main processor collects data, status, and diagnostic information and communicates commands to the starter module and the LLID (for Low Level Intelligent Device) bus. The main processor has an integral display (DynaView). • Higher level modules (e.g. starter) exist only as necessary to support system level control and communications.
Controls Interface Figure 36 DynaView Key Functions In this touch screen application, key functions are determined completely by software and change depending upon the subject matter currently being displayed. The basic touch screen functions are outlined below. Radio Buttons Radio buttons show one menu choice among two or more alternatives, all visible. (It is the AUTO button in Figure 36.) The radio button model mimics the buttons used on old-fashioned radios to select stations.
Controls Interface its tab, thereby making it look like a part of the current folder (as would an open folder in a file cabinet). The user selects a screen of information by touching the appropriate tab.
Controls Interface The ALARMS button appears only when an alarm is present, and blinks (by alternating between normal and reverse video) to draw attention to a diagnostic condition. Pressing the ALARMS button takes you to the corresponding tab for additional information. Front Panel Lockout Feature Display and Touch Screen are Locked Enter Password to Unlock 1 2 3 4 5 6 7 8 9 Enter 0 Cancel NOTE: The DynaView display and Touch Screen Lock screen is shown below.
Controls Interface If the Display and Touch Screen Lock feature is disabled, the following screen is automatically displayed if the DynaView Temperature is below freezing and has been 30 minutes after the last keystroke. Note: This feature is provided to avoid unintended actuations of the keypad, which can occur due to ice build-up on the DynaView’s exterior surfaces.
Controls Interface Table 25 Chiller Modes Chiller Modes Description Top Level Mode Sub-modes Stopped The chiller is not running and cannot run without intervention. Further information is provided by the submode: Local Stop Chiller is stopped by DynaView Stop button commandcannot be remotely overridden.
Controls Interface Table 25 Chiller Modes Chiller Modes Description Top Level Mode Sub-modes Start Inhibited by BAS The chiller is inhibited from starting (and running) by command from a Building Automation System via the digital communication link (com 3 or com 5). Waiting for BAS Communications This is a transient mode - 15-min. max, and is only possible if the chiller is in the Auto - Remote command mode.
Controls Interface Table 25 Chiller Modes Chiller Modes Description Top Level Mode Sub-modes Unit is Building Ice The chiller is running in the Ice Building Mode, and either at or moving towards full capacity available. Ice mode is terminated either with the removal of the ice mode command or with the return brine temperature falling below the Ice Termination Setpoint.
Controls Interface Table 26 Circuit Modes Circuit Modes Description Top Level Mode Sub-modes Auto The given circuit is not currently running but can be expected to start at any moment given that the proper conditions and interlocks are satisfied. No Sub Modes Starting The given circuit is going through the necessary steps to allow the lead compressor on that circuit to start. No Sub Modes Running At least one compressor on the given circuit is currently running.
Controls Interface Table 27 Compressor Modes Compressor Modes Description Top Level Mode Sub-modes Stopped The given compressor is not running and cannot run without intervention. Further information is provided by the sub-mode: Diagnostic Shutdown - Manual Reset The compressor has been shutdown on a latching diagnostic. Service Tool Lockout The compressor has been shutdown due to a command from the TechView Service Tool to be "locked out" and inoperative.
Controls Interface Table 27 Compressor Modes Compressor Modes Description Top Level Mode Sub-modes Diagnostic Shutdown - Auto Reset The compressor is in the process of shutdown due to a diagnostic that may clear automatically. Service Tool Lockout The compressor is in the process of shutdown due to a command from the TechView Service Tool to be "locked out" and inoperative. This setting is nonvolatile and operation can only be restored by using TechView to "unlock" it.
Controls Interface Each compressor has its own screen depending on which radio key is pressed. When toggling between compressor screens, say to compare starts and run time, the same lines can be seen without additional key strokes. For example, toggling from the bottom of the compressor 1A menu accesses the top of the compressor 2A menu. Modes Chiller 1A 1B Compressor 2A Amps L1 L2 L3: 2B 55.0 56.2 54.3 % RLA: 86.0 88.4 84.3 Unit Volts: 460 Oil Temperature: 95.0 102.
Controls Interface Table 30 Refrigerant Screen Description Resolution Units Cond Rfgt Pressure Ckt1/Ckt2 Sat Cond Rfgt Temp Ckt1/Ckt2 Evap Rfgt Pressure Ckt1/Ckt2 Sat Evap Rfgt Temp Ckt1/Ckt2 Evap Approach Temp Ckt1/Ckt2 Rfgt Liquid Level Ckt1/Ckt2 X.X X.X X.X X.X X.X X.X Pressure F/C Pressure F/C F/C Height Setpoint Screen The setpoint screen is a two-part screen. Screen 1 lists all setpoints available to change along with their current value.
Controls Interface Table 31 Table 32 Setpoint Screen Description Resolution or Text Units Comp 1A Pumpdown Comp 1B Pumpdown Comp 2A Pumpdown Comp 2B Pumpdown EXV Ckt 1 Open EXV Ckt 2 Open Front Panel Ckt 1 Lockout Front Panel Ckt 2 Lockout Ext Chilled Water Setpoint Ext Current Limit Setpoint Date Format Date Time Format Time of Day Keypad/Display Lockout Display Units Pressure Units Language Selection Pumpdown/Abort Pumpdown/Abort Pumpdown/Abort Pumpdown/Abort Auto/Open Auto/Open Locked Out/Not Lock
Controls Interface tics, consistent with the circuit to which they belong. One circuit not operating will not shut the chiller down. Viewing the “Compressor” screen will indicate whether a circuit is not operating and for what reason.
TechView Figure 37 TechView TechView is the PC (laptop) based tool used for servicing Tracer CH530. Technicians that make any chiller control modification or service any diagnostic with Tracer CH530 must use a laptop running the software application “TechView.” TechView is a Trane application developed to minimize chiller downtime and aid the technicians understanding of chiller operation and service requirements.
TechView Minimum PC requirements to install and operate TechView • Pentium II or higher processor • 128Mb RAM • 1024 x 768 resolution of display • 56K modem • 9-pin RS-232 serial connection • Operating system - Windows 2000 • Microsoft Office (MS Word, MS Access, MS Excel) • Parallel Port (25-pin) or USB Port NOTE: TechView was designed for the preceding listed laptop configuration. Any variation will have unknown results.
TechView Upon successful Local Connect Tech View will display UNIT VIEW.
TechView Compressor Service View The Compressor View provides convenient access to service functions for pumping down circuits and test starting compressors. Various operational lockouts allow operation of the rest of the chiller while some parts are awaiting repair.
TechView Status View Status View displays, in real time, all non-setpoint data organized by subsystem tabs. As data changes on the chiller it is automatically updated in Status View.
TechView Table 34 Status View Items Tab Text Units Chiller Chiller Top Level Operating Mode Text Chiller Sub Operating Mode Text Operating Mode Text Chiller Sub Operating Mode Text Front Panel Auto/Stop Text Outdoor Air Temperature Temperature External Auto/Stop Auto/Stop External Emergency Stop Auto/Stop Active Chilled Water Setpoint Temperature Compressor RTAC-SVX01F-EN Active Current Limit Setpoint Temperature Active Ice Termination Setpoint Temperature External Current Limi
TechView Table 34 Tab Text Units Compressor Line 3 Current % RLA Maximum Line Current Amps Supply Oil Temperature Temperature Intermediate Oil Pressure Pressure Female Step Loader Loaded/Unloaded High Pressure Cutout Switch Tripped/Not Tripped Circuit 112 Status View Items Circuit Sub Mode Text Circuit Top Level Operating Mode Text External Hardwired Lockout Locked/Not locked Front Panel Lockout Locked/Not locked Air Flow % Inverter Speed % Full Speed Condenser Refrigerant Pre
TechView Setpoint View Setpoint view displays the active setpoints and allows you to make changes. Figure 41 Setpoint View Setpoint List The center of the window displays the scrollable list of setpoint panels. Setpoint Enumeration Panel A setpoint numeric panel contains a label with the setpoint description and a pull-down list showing the active value and the other selections. The Default button returns the setpoint to the product's factory setting.
TechView Setpoint Numeric Panel A setpoint numeric panel contains a label with the setpoint description, a Default button, a text field with a unit label, and a slider. The Default button changes the setpoint to the product's factory setting. The text field and slider are updated when the change is complete. You can change a setpoint with the text field or with the slider. When you click on the entry field, the change setpoint dialog displays to coordinate the setpoint change.
TechView Table 35 Setpoints View Items Tab Text Min Value Max Value Default Value Unit Type Chiller Front Panel Display Units English, SI Chiller Front Panel Chilled Water Setpoint 10 (-12.22) 65 (18.33) English Display Units 44 (6.67) Temp Deg F(C) Chiller Front Panel Current Limit Setpoint 60 120 120 Percent Chiller Differential to Stop 0.5 (0.2777) 2.5 (1.388) 2.0 (1.111) Differential Temp Deg F(C) Chiller Differential to Start 1.0 (0.555) 30 (16.666) 2 (1.
TechView Table 35 Setpoints View Items Tab Text Min Value Max Value Default Value Unit Type Chiller Outdoor Maximum Reset 0 20 (11.11) 5 (2.
TechView Diagnostics View This window lists the active and inactive (history) diagnostics. There can be up to 60 diagnostics, both active and historic. For example, if there were 5 active diagnostics, the possible number of historic diagnostics would be 55. You can also reset active diagnostics here, (i.e., transfer active diagnostics to history and allow the chiller to regenerate any active diagnostics). Resetting the active diagnostics may cause the chiller to resume operation.
TechView Configuration View This view displays the active configuration and allows you to make changes. Figure 43 Configuration View Configuration View allows you to define the chiller's components, ratings, and configuration settings. These are all values that determine the required installed devices, and how the chiller application is run in the main processor. For example, a user may set an option to be installed with Configuration View, which will require devices to be bound using Binding View.
TechView Selecting the Undo All button will undo any configuration setting changes made during the present TechView connection and since the last time the Load Configuration button was selected. .
TechView Table 36 Tab Feature Configuration View Items Item Default Condenser Fan/Motor Configuration Compressor Motor Starter Type Incoming Power Line Connection Power Line Connection Type Unit Operator Interface Remote Interface Control Input Accessories/Options Control Output Accessories/Options Short Circuit Rating Electrical Accessories and Export Packing Control Panel Accessories Refrigerant Service Valves Compressor Sound Attenuator Option Appearance Options 120 Description N - Condenser fa
TechView Table 36 Tab Features Configuration View Items Item Installation Accessories Factory Test Control, Label, and Literature Language Special Order Custom Comm 3 ICD address Status Relay #1 J2-10,11,12 Status Relay #2 J2-7,8,9 Status Relay #3 J2-4,5,6 Status Relay #4 J2-1,2,3 Phase Unbalance Trip Phase Unbalance Grace Period Maximum Acceleration Time Starter Feature Default Description N - No installation accessories R - Neoprene Isolators F - Flanged water connection kit G - Neoprene isolators a
TechView Software View Software view allows you to verify the version of chiller software currently running on the EasyView or DynaView and download a new version of chiller software to the EasyView or DynaView. You can also add up to two available languages to load into the DynaView. Loading an alternate language file allows the DynaView to display its text in the selected alternate language, English will always be available.
TechView Binding View Binding View allows you to assess the status of the network and all the devices connected as a whole, or the status of individual devices by using status icons and function buttons. Binding View is essentially a table depicting what devices and options are actually discovered on the network bus (and their communication status) versus what is required to support the configuration defined by the feature codes and categories.
TechView Replacing or Adding Devices If a device is communicating but incorrectly configured, it might not be necessary to replace it. If the problem with the device is related to communication, attempt to rebind it, and if the device becomes correctly configured, it will then communicate properly. If a device that needs to be replaced is still communicating, it should be unbound. Otherwise, it will be necessary to rebuild the CH530 network image for Binding View to discover that it has been removed.
TechView 5. Proceed to “Main Processor Software Download” page and read the instructions to download the latest version of main processor installation files. Note: you will first select the chiller type to obtain the available file versions. 6. Select the product family. A table with the download link will appear for that product family. 7.
Diagnostics The following Diagnostic Table contains all diagnostics possible arranged alphabetically by the name assigned to each diagnostic. Not all diagnostics are available unless TechView is installed. Legend to Diagnostics Table Hex Code: 3-digit code used to uniquely identify diagnostics. Diagnostic Name: Name of the diagnostic as it appears at DynaView and/or TechView displays. Severity: Defines the action of the above effect. Immediate means an instantaneous shutdown of the affected portion.
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria Reset Level 69F Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Special Mode Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Latch Same as Comm Loss: Chilled Water Flow Switch Remote Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Immediate Latch Same as Comm Loss: Chilled Water Flow Switch
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria Reset Level 698 Normal Latch Same as Comm Loss: Fan Inverter Fault, Circuit #1 or Circuit #1, Drive 1 Remote Special Mode Latch Same as Comm Loss: Fan Inverter Fault, Circuit #1 or Circuit #1, Drive 1 Remote Special Mode Latch Same as Comm Loss: Fan Inverter Fault, Circuit #1 or Circuit #1, Drive 1 Remote Normal Latch Same as Comm Loss: Chilled Water Flow Switch Remote Normal Latch Same as Comm Loss: Chille
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria Reset Level 5E2 Comm Loss: Outdoor Air Temperature Normal Latch Remote 690 691 692 693 6AC Comm Loss: Starter 1A Comm Loss: Starter 1B Comm Loss: Starter 2A Comm Loss: Starter 2B Comm Loss: Starter Panel High Temperature Limit Panel 1, Cprsr 1B Comm Loss: Starter Panel High Temperature Limit Panel 1, Cprsr 2A Comm Loss: Starter Panel High Temperature Limit Panel 2, Cprsr 2B Comm Loss: Status/ Annunciation Relays Comm Lo
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria 6B9 Evaporator Rfgt Drain Circuit 1 NA Latch 6BA Evaporator Rfgt Drain Circuit 2 Evaporator Water Flow Lost NA Latch This diagnostic is effective only with Remote Evap units. The liquid Remote level of the respective evaporator was not seen to be below the level of -21.2 mm (0.83 in) within 5 minutes of the commanded opening of its Drain Valve Solenoid.
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria Reset Level BE Immediate Latch Same as High Pressure Cutout - Compressor 1A Local Immediate Latch Same as High Pressure Cutout - Compressor 1A Local Immediate Latch Bad Sensor or LLID Remote Immediate Latch Bad Sensor or LLID Remote Immediate Latch Bad Sensor or LLID Remote Immediate Latch Bad Sensor or LLID Remote Special Mode NonLatch The leaving chilled water temp.
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria B5 Low Suction Refrigerant Pressure - Circuit 1 Immediate Latch B6 Low Suction Refrigerant Pressure - Circuit 2 Low Suction Refrigerant Pressure - Cprsr 1B Low Suction Refrigerant Pressure - Cprsr 2B Motor Current Overload Compressor 1A Immediate Latch a. The Suction Refrigerant Pressure (or either of the compressor Local suction pressures) dropped below 10 Psia just prior to compressor start (after EXV preposition).
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria Reset Level 19D 19E 19F 184 Phase Loss - Compressor 1B Phase Loss - Compressor 2A Phase Loss - Compressor 2B Phase Reversal Compressor 1A Immediate Immediate Immediate Immediate Latch Latch Latch Latch Local Local Local Local 185 Phase Reversal Compressor 1B Phase Reversal Compressor 2A Phase Reversal Compressor 2B Power Loss - Compressor 1A Immediate Latch Same as Phase Loss - Compressor 1A Same as Phase Loss - Comp
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria CC Starter Contactor Interrupt Failure - Compressor 2A Special Mode Latch CA Starter Contactor Interrupt Failure - Compressor 1A Starter Contactor Interrupt Failure - Compressor 1B Starter Contactor Interrupt Failure - Compressor 2B Starter Did Not Transition Compressor 1A Special Mode Special Mode Special Mode Immediate Latch Detected compressor currents greater than 10% RLA on any or all Local phases when the compres
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria Reset Level 5C8 Info Latch Same as Starter Module Memory Error Type 1 - Starter 2A Local Info Latch Same as Starter Module Memory Error Type 1 - Starter 2A Local Info Latch Same as Starter Module Memory Error Type 1 - Starter 2A Local Immediate Latch Same as Starter Module Memory Error Type 1 - Starter 2A Local Immediate Latch Same as Starter Module Memory Error Type 1 - Starter 2A Local Immediate Latch
Diagnostics Hex Diagnostic Name Code and Source Severity Persistence Criteria D8 Under Voltage Normal NonLatch 771 Very Low Evaporator Refrigerant Pressure Circuit 1 Immediate Latch 772 Very Low Evaporator Refrigerant Pressure Circuit 2 Immediate Latch a. Line voltage below - 10% of nominal or the Under/Overvoltage Remote transformer is not connected. [Must hold = - 10 % of nominal. Must trip = - 15 % of nominal. Reset differential = min. of 2% and max. of 4%. Time to trip = min. of 1 min.
Pre-Start Checkout Installation Checklist Complete this checklist as the unit is installed and verify that all recommended procedures are accomplished before the unit is started. This checklist does not replace the detailed instructions given in the “Installation -Mechanical” and “Installation -Electrical” sections of this manual. Read both sections completely, to become familiar with the installation procedures, prior to beginning the work.
Pre-Start Checkout Electrical Wiring WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.
Pre-Start Checkout • • • • • If alarm and status relay outputs are used, install leads from the panel to the proper terminals on circuit board. If the emergency stop function is used, install low voltage leads to terminals on circuit board. Connect separate power for the External Emergency Stop option, if applicable. If the ice making-option is used, install leads on 5K18 to the proper terminals on 1U7. Connect separate power supply for ice making status circuit, if applicable.
Pre-Start Checkout CAUTION Compressor Damage! It is imperative that L1, L2, L3 in the starter be connected in the A-B-C phase sequence to prevent equipment damage due to reverse rotation. 5. Fill the evaporator chilled water circuit. Vent the system while it is being filled. Open the vents on the top of the evaporator waterbox while filling and close when filling is completed.
Pre-Start Checkout CAUTION Equipment Damage! Provide adequate voltage to the unit. Failure to do so can cause control components to malfunction and shorten the life of relay contact, compressor motors and contactors. Unit Voltage Imbalance Excessive voltage imbalance between the phases of three-phase system can cause motors to overheat and eventually fail. The maximum allowable imbalance is 3%.
Pre-Start Checkout WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged.
Pre-Start Checkout CH530 Set-Up Use of TechView service tool is required to view and adjust most settings. Refer to the Controls Interface section for instruction on adjustment of the settings.
Unit Start-Up Procedures Daily Unit Start-Up The time line for sequence of operation is shown at the end of this section and depicts the nominal delays and sequences that a chiller would experience during a typical operational cycle. The time line begins with a power up of the main power to the chiller. The sequence assumes a 2 circuit, 2 compressor air-cooled RTAC chiller with no diagnostics or malfunctioning components.
Unit Start-Up Procedures Once the system has been operating for approximately 30 minutes and has become stabilized, complete the remaining start-up procedures, as follows: 1. Check the evaporator refrigerant pressure and the condenser refrigerant pressure under Refrigerant Report on the CH530 TechView. The pressures are referenced to sea level (14.6960 psia). 2. Check the EXV sight glasses after sufficient time has elapsed to stabilize the chiller.
Unit Start-Up Procedures System Restart After Extended Shutdown Follow the procedures below to restart the unit after extended shutdown: 1. Verify that the liquid line service valves, oil line, compressor discharge service valves and suction service valves are open (backseated). CAUTION Compressor Damage! Catastrophic damage to the compressor will occur if the oil line shut off valve or the isolation valves are left closed on unit start-up. 2.
Unit Shutdown Procedures Temporary Shutdown And Restart To shut the unit down for a short time, use the following procedure: 1. Press the STOP key on the CH530. The compressors will continue to operate and, after an unloading period (which may be followed by pumpdown cycle in outdoor ambients below 50oF), will stop when the compressor contactors de-energize. 2. CH530 pump control will turn off the pump (after a minimum 1 min.
Unit Shutdown Procedure CAUTION Disconnect Power! Lock the disconnects in the “OPEN” position to prevent accidental startup and damage to the system when it has been setup for extended shutdown. 6. At least every three months (quarterly), check the refrigerant pressure in the unit to verify that the refrigerant charge is intact.
Periodic Maintenance Perform all maintenance procedures and inspections at the recommended intervals. This will prolong the life of the chiller and minimize the possibility of costly failures. Use an “Operator’s Log”, such as that shown at the end of the section, to record an operating history for the unit. The log serves as a valuable diagnostic tool for service personnel. By observing trends in operating conditions, an operator can anticipate and prevent problem situations before they occur.
Periodic Maintenance WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.
Periodic Maintenance RTAC Start-up Test Log Job Name Model # CRC # Sales Order # Job Location Serial # Job Elevation (ft. above sea level) Ship Date Starter Data: Manufacturer Type: (wye-delta or x-line) Vendor ID #/ Model #: Volts Amps Start-up Only Hz Compressor Data: Chiller Appearance on arrival: Machine gauge pressure: Machine CH.
Periodic Maintenance RTAC Unit Configuration Job Name Model # Serial # Sales Order # Job Location CRC# Job Elevation (ft.
Periodic Maintenance RTAC Chiller Log Job Name Model # Job Location Serial # Status View: * Chiller Tab: Operating Mode Outdoor Air Temperature Active Chill Water Setpoint Active Current Limit Setpoint Evaporator Entering Water Temp. Evaporator Leaving Water Temp.
Periodic Maintenance Compressor 2A Tab Operating Mode Hours Starts Phase A - B Voltage Average Line Current Line 1 current Line 2 current Line 3 current Line 1 current Line 2 current Line 3 current Evaporator Oil Return Solenoid Supply Oil Temperature Intermediate Oil Pressure Female Step solenoid High Pressure Cutout switch Comments: 154 Compressor 2B Tab Hrs/mins Hrs/mins 15 min 30 min 45 min 15 min 30 min 45 min open / closed open / closed open / closed open / closed open / closed open / c
Maintenance Procedures Refrigerant and Oil Charge Management Proper oil and refrigerant charge is essential for proper unit operation, unit performance, and environmental protection. Only trained and licensed service personnal should service the chiller.
Maintenance Procedures • Low oil sump level after normal shut down • Lower than normal oil concentrations in evaporator R134a Field Charging Procedure Be certain that the electrical power to the unit is disconnected before performing this procedure. WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.
Maintenance Procedures 2. Attach charging hose to evaporator service valve (3/8” (9mm) flare). Open service valve. 3. Add charge to evaporator to bring total circuit charge up to the level indicated in the above chart. 4. Close service valve and disconnect charging hose. Adding charge: This procedure should be followed when adding charge to an undercharged unit. When low charge is indicated by low subcooling in the liquid line, charge should be added until sufficient subcooling is achieved. 1.
Maintenance Procedures Table 37 Charge Holding Capabilities on High Side Nominal Circuit Nominal Circuit Condenser Charge Charge in Oil Capacity Charge Holding Capacity Separator lb @ 60% full lb 90o ambient lb 70 165 118.1 46.9 85 175 134.3 40.7 100 215 163.7 51.3 120 225 187.9 37.1 170 365 203.4 161.6 200 415 282.0 133 240 460 325.6 134.4 Circuit varies slightly with efficiency and unit configuration % Oil Separator Level 97.7 86.0 56.0 41.2 100.0% 86.1 % 86.
Maintenance Procedures The evaporator is large enough to hold all the charge for any unit to below the centerline of the shell. Therefore, no special precautions are required to restart the unit after isolating the charge in the evaporator. Refrigerant Filter Replacement Procedure A dirty filter is indicated by a temperature gradient across the filter, corresponding to a pressure drop. If the temperature downstream of the filter is 8°F (4.
Maintenance Procedures oil will result in high oil circulation rates which will foul the condenser and evaporator performance. This will result in inefficient operation of the chiller. Taken to an extreme, high oil levels may result in erratic expansion valve control or shut down of the chiller due to low evaporator refrigerant temperature. Too much oil may contribute to long term bearing wear. Additionally, excessive compressor wear is probable when the compressor is started with the oil lines dry.
Maintenance Procedures Table 38 Circuit (Tons) 70 85 100 120 170 200 240 1. Oil Charging Data Approximate sump oil level after running “normal” conditions (in) 7 6 7 7 8 8 8 Normal quantity of oil in refrigeration system (evaporator/condenser) lb (gal) 1.1 (0.14) 1.1 (0.14) 1.8 (0.23) 1.8 (0.23) 3.5 (0.44) 3.5 (0.44) 3.5 (0.44) To measure oil level, use the oil drain valve on the oil line and a service valve on the discharge line. This measurement can only be made when the circuit is not running.
Maintenance Procedures CAUTION Equipment Damage! Use only Trane OIL00048 in the RTAC units to avoid any catastrophic damage to the compressor or unit. • Have the unit in vacuum. Note that the vacuum connection should be made on the unit at the service valve that is on the discharge line. Hook up the oil charging hose to the oil charging fitting and submerse the other end into the oil container. Let the vacuum draw the required amount of oil into the unit. • Have the unit at the same pressure as the oil.
Maintenance Procedures 7. When oil comes out of the flare fitting on the oil line shut off valve the filter is full. Stop adding oil. 8. Put the cap on the flare on the oil line shut off valve, remove the charging hose and put the cap back on the flare on the filter housing. 9. Vacuum the compressor (low side) and prepare it for inclusion in the system. There is a service valve on the suction line and on the evaporator. Use these valves to vacuum the compressor. 10. Open the oil line shut off valve.
Maintenance Procedures 2. Disconnect power to the chiller. Remove the electrical junction box cover and disconnect the wires. WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. 3. Evacuate the compressor through the service fitting provided.
Unit Wiring This section provides field wiring diagrams, electrical schematics and connection diagrams for 140-500 ton RTAC units.
2227 166 RTAC-SVX01F-EN
RTAC-SVX01F-EN 167
2228 168 RTAC-SVX01F-EN
RTAC-SVX01F-EN 169
2229 170 RTAC-SVX01F-EN
RTAC-SVX01F-EN 171
2230 172 RTAC-SVX01F-EN
RTAC-SVX01F-EN 173
1988 174 RTAC-SVX01F-EN
RTAC-SVX01F-EN 175
1989 176 RTAC-SVX01F-EN
RTAC-SVX01F-EN 177
1990 178 RTAC-SVX01F-EN
RTAC-SVX01F-EN 179
1991 180 RTAC-SVX01F-EN
RTAC-SVX01F-EN 181
1996 182 RTAC-SVX01F-EN
RTAC-SVX01F-EN 183
1997 184 RTAC-SVX01F-EN
RTAC-SVX01F-EN 185
1999 186 RTAC-SVX01F-EN
RTAC-SVX01F-EN 187
2201 188 RTAC-SVX01F-EN
RTAC-SVX01F-EN 189
2202 190 RTAC-SVX01F-EN
RTAC-SVX01F-EN 191
2203 192 RTAC-SVX01F-EN
RTAC-SVX01F-EN 193
2204 194 RTAC-SVX01F-EN
RTAC-SVX01F-EN 195
2241 196 RTAC-SVX01F-EN
RTAC-SVX01F-EN 197
2242 198 RTAC-SVX01F-EN
RTAC-SVX01F-EN 199
2231 200 RTAC-SVX01F-EN
RTAC-SVX01F-EN 201
4876 202 RTAC-SVX01F-EN
RTAC-SVX01F-EN 203
1992 204 RTAC-SVX01F-EN
RTAC-SVX01F-EN 205
2217 206 RTAC-SVX01F-EN
RTAC-SVX01F-EN 207
4877 208 RTAC-SVX01F-EN
RTAC-SVX01F-EN 209
2205 210 RTAC-SVX01F-EN
RTAC-SVX01F-EN 211
1352 212 RTAC-SVX01F-EN
RTAC-SVX01F-EN 213
4880 214 RTAC-SVX01F-EN
RTAC-SVX01F-EN 215
4882 216 RTAC-SVX01F-EN
RTAC-SVX01F-EN 217
4883 218 RTAC-SVX01F-EN
RTAC-SVX01F-EN 219
1353 220 RTAC-SVX01F-EN
RTAC-SVX01F-EN 221
4881 222 RTAC-SVX01F-EN
RTAC-SVX01F-EN 223
4884 224 RTAC-SVX01F-EN
RTAC-SVX01F-EN 225
2243 226 RTAC-SVX01F-EN
RTAC-SVX01F-EN 227
4899 228 RTAC-SVX01F-EN
RTAC-SVX01F-EN 229
4871 230 RTAC-SVX01F-EN
RTAC-SVX01F-EN 231
4874 232 RTAC-SVX01F-EN
RTAC-SVX01F-EN 233
4873 234 RTAC-SVX01F-EN
RTAC-SVX01F-EN 235
2219 236 RTAC-SVX01F-EN
2247 RTAC-SVX01F-EN 237
2222 238 RTAC-SVX01F-EN
RTAC-SVX01F-EN 239
2248 240 RTAC-SVX01F-EN
RTAC-SVX01F-EN 241
2239 242 RTAC-SVX01F-EN
RTAC-SVX01F-EN 243
2208 244 RTAC-SVX01F-EN
2246 RTAC-SVX01F-EN 245
2223 246 RTAC-SVX01F-EN
RTAC-SVX01F-EN 247
4872 248 RTAC-SVX01F-EN
RTAC-SVX01F-EN 249
1974 250 RTAC-SVX01F-EN
Trane A business of American Standard Companies www.trane.com For more information contact your local district office or e-mail us at comfort@trane.com Literature Order Number RTAC-SVX01F-EN File Number SV-RF-RTAC-SVX01F-EN-0106 Supersedes RTAC-SVX01E-EN Stocking Location Inland Trane has a policy of continuous product data and product improvement and reserves the right to change design and specifications without notice.
