Trane Rtaaiom3 Manual
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LibraryService Literature Product SectionRefrigeration ProductRotary liquid Chillers – Air-Cooled ModelRTAA Literature TypeInstallation, Operation, Maintenance Sequence3 DateDecember 1991 File No.SV-RF-RLC-RTAA-IOM-3-1291 Supersedes Installation RTAA-IOM-3 Operation Maintenance Since The Trane Company has a policy of continuous product improvement, it reserves the right to change specifications and design without notice. The installation and servicing of the equipment referred in this booklet should be...
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©American Standard Inc. 1991
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3RTAA-IOM-3
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4RTAA-IOM-3 77 Operating Principles - Mechanical 77 General 77 Refrigeration (Cooling) Cycle 77 — Cycle Description 77 — Compressor Description 77 — Compressor Motor 77 — Compressor Rotors 77 — Compressor Loading Sequence 82 Oil System Operation 82 — Overview 82 — Domestic Water Heater 83 — Oil Separator 83 — Compressor Bearing Oil Supply 83 — Compressor Rotor Oil Supply 84 — Slide Valve Movement 84 — Oil Filter 84 —Condenser Fans 87 Operating Principles -Adaptive Control™ Microprocessor Logic87 General...
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5RTAA-IOM-3 37 Figure 18 Spring Isolator Placement for Typical RTAA Packaged Unit - 130 to 200 Tons 38 Figure 19 Spring Isolator Placement for Typical RTAA Packaged Unit -240 to 400 Tons 39 Figure 20 Spring Isolator Placement for Typical RTAA Outdoor Unit with Remote Evaporator Option 40 Figure 21 Spring Isolator Placement for Typical RTAA Unit with Heat Recovery Domestic Water Heater 41 Figure 22 Suggested Piping for Typical RTAA Evaporator 43 Figure 23 RTAA 130 thru 400 Evaporator Water Pressure...
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6RTAA-IOM-3 64 Figure 36 Typical Field Wiring for Outdoor Unit with Remote Evaporator Option 70 Figure 37 Alarm/Running/Maximum Capacity Contact Outputs 72 Figure 38 Resistor and Potentiometer Arrangement for External Chilled Water Setpoint 73 Figure 39 Resistor and Potentiometer Arrangement for External Current Limit Setpoint 78 Figure 40 Refrigeration System and Control Components - Single Circuit 80 Figure 41 Refrigeration System and Control Components - Duplex Circuit 81 Figure 42 Typical RTAA...
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7RTAA-IOM-3 16 Table 1 General RTAA Mechanical Specifications 17 Table 2 RTAA Refrigerant Circuit Designations and Capacities 51 Table 3 RTAA Circuit Capacities 51 Table 4 Liquid Line Size for Horizontal and/ or Downflow Lines 51 Table 5 Equivalent Lengths of Non-Ferrous Valves and Fittings 53 Table 6 Suction Line Size for Horizontal and/or Upflow Lines 53 Table 7 Suction Line Size for Horizontal and/or Downflow Lines 56 Table 8 System Refrigerant Charge 56 Table 9 Field-installed Piping Charge 67 Table...
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8RTAA-IOM-3
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9RTAA-IOM-3 Literature Change History RTAA-IOM-3 (October 1991) Original manual. Covers installation, operation, and maintenance of “CO” design sequence RTAA-130 thru RTAA-400 units. Unit Identification When the unit arrives, compare all nameplate data with ordering and shipping information. Unit Inspection When the unit is delivered, verify that it is the correct unit and that it is property equipped. Compare the information which appears on the unit nameplate with the ordering and submittal...
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10RTAA-IOM-3 Commonly Used Acronyms Acronyms used in this manual are defined below. OAT = Outdoor Air Temperature BAS = Building Automation System BCL = Bidirectional Communications Link CAR = Circuit Shutdown, Auto Reset CLS = Current Limit Setpoint CMR = Circuit Shutdown, Manual Reset CWR = Chilled Water Reset CWS = Chilled Water Setpoint DDT = Design Delta-Temperature Setpoint (i.e., the difference between entering and leaving chilled water temperatures) ENT = Entering Chilled Water Temperature EXV...