Trane RTAD 085 Installation Operation & Maintenance
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Trane RTAD 085 Installation Operation & Maintenance

R series air-cooled helical rotary liquid chiller
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Installation
Operation
Maintenance
Series R™ Air-Cooled Helical Rotary
Liquid Chiller
RTAD 085 - 180 (50Hz)
Standard, Free Cooling and Heat
Recovery models
RTAD-SVX01F-E4

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Summary of Contents for Trane RTAD 085

  • Page 1 Installation Operation Maintenance Series R™ Air-Cooled Helical Rotary Liquid Chiller RTAD 085 - 180 (50Hz) Standard, Free Cooling and Heat Recovery models RTAD-SVX01F-E4...

  • Page 2: General Information

    Trane observed during maintenance and RTAD chillers. They do not contain service visits: full service procedures necessary for 1.
  • Page 3 A a specialist in our equipment. copy of this letter must be sent to Regular maintenance ensures that Trane Epinal Operations - Claims any malfunction is detected and team. corrected in good time and minimizes the possibility that Warranty serious damage will occur.

  • Page 4: Table Of Contents

    Contents General Information Unit Inspection Loose Parts Inventory General Data - Standard cooling unit General Data - Free-cooling unit General Data - Heat Recovery unit Unit Dimensions Installation - Mechanical Installation Responsibilities Nameplates Storage Location Requirements Isolation and Sound Emission Neoprene Isolator Installation Noise Considerations Foundation...
  • Page 5 Contents Installation - Electrical General Recommendations Installer-Supplied Components Power Supply Wiring Control Power Supply Heater Power Supply Water Pump Power Supply Interconnecting Wiring Chilled Water Flow (Pump) Interlock Chilled Water Pump Control Alarm and Status Relay Outputs (Programmable Relays) Low Voltage Wiring External Emergency Stop External Auto/Stop External Circuit Lockout - Circuit 1 and Circuit 2...
  • Page 6 Contents Unit Start-up Procedures Daily Unit Start-Up General Seasonal Unit Start-Up Procedure System Restart After Extended Shutdown Unit Shutdown Procedures Temporary Shutdown And Restart Extended Shutdown Procedure Maintenance General Weekly Maintenance Monthly Maintenance Annual Maintenance Maintenance Procedures Refrigerant Emission Control Refrigerant and Oil Charge Management R134a Field Charging Procedure Refrigerant Charging...

  • Page 7: Unit Inspection

    General Information Figure 1 - Typical Unit Nameplate Unit Inspection Loose Parts Inventory When the unit is delivered, verify Check all the accessories and loose that it is the correct unit and that it is parts which are shipped with the properly equipped.

  • Page 8: General Data - Standard Cooling Unit

    General Information General Data - SI Units Table 1 - General Data RTAD Standard Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage Minimum Flow (l/s)
  • Page 9 General Information Table 3 - General Data RTAD Standard Low Noise Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage Minimum Flow (l/s) 11.6 11.6...
  • Page 10 General Information Table 5 - General Data RTAD Standard Low Noise with Night Noise Set Back option Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250...
  • Page 11 General Information Table 7 - General Data RTAD Standard High External Static Pressure Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage Minimum Flow (l/s) 11.6...
  • Page 12 General Information English Units Table 9 - General Data RTAD Standard Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (Gallon) 28.0 71.3 58.7...
  • Page 13 General Information Table 11 - General Data RTAD Standard Low Noise Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (Gallon) 28.0 71.3 58.7...
  • Page 14 General Information Table 13 - General Data RTAD Standard Low Noise with Night Noise Set Back option Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250...
  • Page 15 General Information Table 15 - General Data RTAD Standard High External Static Pressure Size Compressor Quantity Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage (Gallon) 28.0 71.3...

  • Page 16: General Data - Free-Cooling Unit

    General Information Note: All Free Cooling units must be freeze protected with 30% Ethylene Glycol in the cooling loop circuit which is the most convenient percentage in order to protect the unit against freezing. Protection coverage with 30% Ethylene Glycol: - freezing point without burst effect = -13°C;...
  • Page 17 General Information Table 18 - General Data RTAD FC High Efficiency Unit Size Number of Compressors Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 Evaporator Evaporator Model EG 140 EG 170 EG 200 EG 200 EG 250 EG 250 Water Storage Minimum Flow (l/s)

  • Page 18: General Data - Heat Recovery Unit

    General Information Table 19 - General Data RTAD Heat Recovery Standard Unit Size Number of Compressors Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage Minimum Flow (l/s) 11.6...
  • Page 19 General Information Table 20 - General Data RTAD Heat Recovery High Efficiency Unit Size Number of Compressors Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 Evaporator Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage Minimum Flow (l/s) 11.6 11.6...
  • Page 20 General Information Table 21 - General Data RTAD Heat Recovery Standard Low Noise Unit Size Number of Compressors Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 100/85 100/100 Evaporator Evaporator Model EG120 EG140 EG170 EG200 EG200 EG200 EG250 EG250 Water Storage Minimum Flow...
  • Page 21 General Information Table 22 - General Data RTAD Heat Recovery High Efficiency Low Noise Unit Size Number of Compressors Nominal Size (1) (Tons) 40/40 50/50 60/60 70/70 85/70 85/85 Evaporator Evaporator Model EG140 EG170 EG200 EG200 EG250 EG250 Water Storage Minimum Flow (l/s) 11.6...
  • Page 22 General Information The below hydraulic module operating weight must be added to the RTAD operating weight. Table 23 - Hydraulic module additional operating weight - SI units (kg) RTAD 115 HE - RTAD 125 HE - Expansion vessel RTAD 145 SE - RTAD 150 SE Pump type Pump model Without...

  • Page 23: Unit Dimensions

    1000 1000 RTAD 145-150 5351 2260 2115 1200 1000 1000 RTAD 165-180 6370 2260 2215 1200 1000 1000 RTAD 085-100 HE 4426 2260 2095 1200 1000 1000 RTAD 115-125 HE 5351 2260 2115 1200 1000 1000 RTAD 145-150 HE 6370...

  • Page 24: Installation - Mechanical

    • Unit model and size description • Unit serial number • Identifies unit electrical requirements • Lists correct operating charges of R-134a and refrigerant oil (Trane OIL00048) • Lists unit test pressures Compressor Nameplate The compressor nameplate provides following information: •...
  • Page 25 RTAD 145-150 4000 2400 5351 2215 2260 4530 4940 RTAD 165-180 4000 2400 6370 2215 2260 5345 5855 RTAD 085-100 HE 4000 2400 4426 2215 2260 3345 3785 RTAD 115-125 HE 4000 2400 5351 2215 2260 4010 4560 RTAD 145-150 HE...

  • Page 26: Storage

    Noise Considerations carefully evaluated. Sound power Locate the outdoor unit away from levels for Trane air-cooled RTAD sound sensitive areas. If required, chillers are available on request. install rubber vibration isolators in For additional reduction of sound...

  • Page 27: Foundation

    Coil starvation occurs when operating weight. Trane is not free airflow to (or from) the responsible for equipment problems condenser is restricted. Both warm...

  • Page 28: Drainage

    For Free Cooling units, actual installed conditions. Consult around the unit to prevent damage Free Cooling coil connections are your Trane sales engineer for more also to be Victaulic type to internal components of the details.

  • Page 29: Entering Chilled Water Piping

    Installation - Mechanical Entering Chilled Water Leaving Chilled Water Evaporator Drain Piping Piping A 3/4" drain connection is located under the evaporator shell. This may Air vents (to bleed air from Air vents (to bleed air from be connected to a suitable drain to system).

  • Page 30: Water Treatment

    Failure to do so may result in use in Trane air-cooled Series R™ damage to system components. chillers. Use of either will lead to a shortened life to an indeterminable Dirt, scale, products of corrosion and degree.
  • Page 31 Installation - Mechanical Figure 5 - RTAD 115HE - 125HE - 145SE - 150SE Single pump available static pressure 1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15 Figure 6 - RTAD 115HE - 125HE - 145SE - 150SE Dual pump available static pressure 1 = JRN 208-13/5.5 2 = JRN 208-14/7.5...
  • Page 32 Installation - Mechanical Figure 7 - RTAD 145HE - 150HE - 165SE - 180SE Single Pump Available Static Pressure 1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15 Figure 8 - RTAD 145HE - 150HE - 165SE - 180SE Dual pump Available static pressure 1 = JRN 208-13/5.5 2 = JRN 208-14/7.5...
  • Page 33 Installation - Mechanical Figure 9 - RTAD 115HE - 125HE - 145SE - 150SE Pump Capacity Curve Single Pump 1 = LRN 208-13/5.5 2 = LRN 208-14/7.5 3 = SIL 208-16/11 4 = SIL 208-17/15 Figure 10 - RTAD 115HE - 125HE - 145SE - 150SE Pump Capacity Curve Dual Pump 1 = LRN 208-13/5.5 2 = LRN 208-14/7.5...
  • Page 34 Installation - Mechanical Figure 11 - RTAD 145HE - 150HE - 165SE - 180SE Pump Current Curve Single Pump 1 = JRN 208-13/5.5 2 = JRN 208-14/7.5 3 = DIL 208-16/11 4 = DIL 208-17/15 Figure 12 - RTAD 145HE - 150HE - 165SE - 180SE Pump Current Curve Dual Pump 1 = JRN 208-13/5.5 2 = JRN 208-14/7.5...
  • Page 35 Installation - Mechanical Figure 13 - Water Pressure Drop RTAD Free Cooling - Compressor Mode Figure 14 - Water Pressure Drop RTAD Free Cooling - Free Cooling Mode 1 = 085 STD 2 = 085 HE, 100 STD 3 = 100 HE, 115 STD 4 = 115 HE, 125 HE, 145 STD, 150 STD 5 = 125 STD 6 = 145 HE, 150 HE, 165 STD, 180 STD...
  • Page 36 Installation - Mechanical Figure 15 - Condenser Water Pressure Drop RTAD Partial Heat Recovery - Heating Mode 1 = 085-100 2 = 115-125 3 = 145-150 4 = 165-180 Figure 16 - Condenser Water Pressure Drop RTAD Total Heat Recovery - Heating Mode 1 = 085-100 2 = 115-125 3 = 145-150...
  • Page 37 Installation - Mechanical Figure 17 - 3-way Valve Pressure Drop RTAD Total Heat Recovery - Heating mode 1 = 085-100-115-125 2 = 145-150-165-180 Figure 18 - Suggested piping for typical RTAD Standard and Heat Recovery evaporator without hydraulic module 1. Gate valve 6.
  • Page 38 Installation - Mechanical Figure 19 - Suggested piping for typical RTAD with hydraulic module 1. Gate valve 8. Drain 2. Water strainer 9. Flow switch (chilled water flow) Trane- 3. Thermometer (user option) supplied 4. Vibration eliminator 10.Balancing valve 5. Relief valve 11.
  • Page 39 4. Vibration eliminator 10.Balancing valve 5. Relief valve 11. Clean out tee Figure 22 - Suggested condenser piping for typical RTAD THR with 3-way valve A. Trane-supplied with 3-way valve 6. Valved pressure gauge option 7. Vent 1. Gate valve 8.
  • Page 40 Installation - Mechanical Figure 23 - Suggested condenser piping for typical RTAD THR without 3-way valve A. Trane-supplied without 3-way valve 6. Valved pressure gauge option 7. Vent 1. Gate valve 8. Drain 2. Water strainer 9. Flow switch (warm water flow) 3.

  • Page 41: Water Pressure Gauges

    Installation - Mechanical Water Pressure Gauges Freeze Protection In ambient temperatures below -18°C, the water circuit must be If the unit will remain operational at Install field-supplied pressure protected against freezing by the subfreezing ambient temperatures, components as shown in one of the following methods: the chilled water system must be Figure 18-23.

  • Page 42: Installation - Electrical

    In case of application with negative Leaving water temperature (°C) temperature at the evaporator or usage of another type of fluid, please contact your local Trane sales engineer. A relief valve is located at pump suction limiting water circuit pressure at 4 bar. Nitrogen pressure...

  • Page 43: General Recommendations

    Installation - Electrical General Recommendations CAUTION! To avoid corrosion and overheating at terminal connections, WARNING! The warning label shown use copper conductors only. Failure in Figure 24 is displayed on the to do so may result in damage to equipment. Strict adherence to the equipment.
  • Page 44 Installation - Electrical Table 26 - Unit Wiring 400/3/50 - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units Nbr of Power Maximum Starting Power Disconnect Compressor Evaporator Unit Size Connections Amps (1) Amps (2) Factor (5) Switch Size (A) Fuse Size (A) heater (kW)
  • Page 45 Installation - Electrical Table 27 - Unit Wiring 400/3/50/ cont - Standard cooling unit / Partial Heat Recovery and Total Heat Recovery units Nbr of Power Maximum Starting Power Disconnect Compressor Evaporator Unit Size Connections Amps (1) Amps (2) Factor (5) Switch Size (A) Fuse Size (A) heater (kW)
  • Page 46 Table 30 - Compressor motor electrical data - 50 Hz - Free Cooling unit Unit Size Nominal voltage Maximum unit kW Maximum RLA (1) Starting amps Power factor (V/Ph/Hz) (kW) RTAD 085 FC STD 400/3/50 0.90 RTAD 085 FC STD 400/3/50 0.90 RTAD 100 FC STD 400/3/50 0.88...
  • Page 47 Table 31 - General electrical data Crankcase heater Compressor Unit Size Nominal voltage Control circuit Short circuit intensity (V/Ph/Hz) (VA) (kA) RTAD 085 FC STD 400/3/50 1600 RTAD 100 FC STD 400/3/50 1600 RTAD 115 FC STD 400/3/50 1600 RTAD 125 FC STD...

  • Page 48: Installer-Supplied Components

    Installation - Electrical 1. As standard, all units have single Power Supply Wiring Control Power Supply point power connection. The unit is equipped with a control All power supply wiring must be 2. LRA (Locked Rotor Amps) - based power transformer; it is not necessary sized and selected accordingly by on full winding (x-line) start units.

  • Page 49: Interconnecting Wiring

    Installation - Electrical Interconnecting Wiring 1. External Auto/Stop (terminals A1 TB3-3 and -4). This input is Chilled Water Flow (Pump) Interlock supplied by the field. A contact The model RTAD chiller requires a closure will start the chiller water field-supplied control voltage contact pump and chiller, via the UCM- input through a flow proving switch CLD pump control contacts.
  • Page 50 Installation - Electrical Specification for Free Cooling units: 3. Proof-of-Chilled-Water-Flow Interlock (Terminals A70 J18- 1. External Auto/Stop (terminals IDC13 and -ID13H) A70 J8-IDH14 and 6X2-1). This terminal must be field- This input is supplied by the field. installed. Contact closure between A contact closure will start the the terminals indicates proof of chiller water pump and chiller, via...
  • Page 51 Installation - Electrical Note: the hot water pump should Specification for Total Heat Recovery units run at least 3 minutes after heat recovery mode is off. During these The heat recovery mode should be 3 minutes, the water flow through validated by a dry contact supplied the heat recovery condenser will by the field.

  • Page 52: Alarm And Status Relay Outputs

    Installation - Electrical Notes: For Free Cooling units a Alarm and Status Relay Output (Programmable Relays) programmable relay output (terminals A70 J17-C12-NO12 and Alarm/Running/Maximum Capacity -NC12) is available. It provides a Outputs Terminals 1 to 7 on terminal normally close contact. Following strip TB4 of the A1 board provide a functions are available: variety of contact outputs on the...
  • Page 53 Installation - Electrical Table 34 - Alarm / Running / Maximum capacity relay output configuration Relay output configuration Relay 1 Alarm Relay 2 Compressor running Relay 3 Maximum capacity Relay 1 Circuit 1 alarm Relay 2 Circuit 2 alarm Relay 3 Maximum capacity Relay 1 Alarm...

  • Page 54: Low Voltage Wiring

    Installation - Electrical Low-voltage wiring External Emergency stop External circuit lockout - (normal trip) Circuit 1 The remote devices described below require low-voltage wiring. All wiring The Clear Language Display The UCM provides auxiliary control to and from these remote analog provides auxiliary control for a of a customer-specified or -installed devices to the UCM-CLD (and A70...

  • Page 55: Ice Making Option

    Installation - Electrical Ice-making option Isolated 2-10 V (dc) voltage source input Ice-machine control (Operator Set dipswitch SW1-1 of the option Setting Menu) must be enabled. The module A9 to "OFF ." Connect the UCM provides auxiliary control for a voltage source to terminals 4 (+) and customer-specified or installed 5 (-) on option module A9 TB1.

  • Page 56: External Current Limit Setpoint (Cls)

    Installation - Electrical External current limit Minimum setpoint: 40% (2.0 V Outdoor air-temperature (dc)input) setpoint: voltage source sensor Maximum setpoint: 120% (10.0 V 2-10 V (dc) or current This sensor is used for low ambient (dc)input) source 4-20 mA. lockout and chilled-water reset by 4-20 mA Current source input outdoor air temperature.

  • Page 57: Communication Card Csr

    3. The maximum total length for be set and the optional A9 module each communication link is must be installed. Contact your 1,500 meters. local Trane representative for this 4. The communication link cannot matter. pass between buildings. 5. All UCM-CLD on the communication link can be connected in a "daisy chain"...

  • Page 58: Lontalk Communication Interface

    Communications Interface for Chillers (LCI-C) LonTalk uses network variables to The Tracer LCI-C controller communicate points on a communicates via Trane's LonTalk The unit controller provides an communication link. LonMark has protocol. Typically, a communication optional LonTalk Communication defined a list of standard network...
  • Page 59 Trane Chiller Extension The network variables that Trane provides in addition to the network variables provided by the LonMark Chiller Functional Profile, 8040 Version 1. (Not all network variables in the Trane Chiller Extension are available for every chiller type.) UCPT Acronym for user-defined configuration parameter type.
  • Page 60 Installation - Electrical Table 39 - Network Variable List Index Network Variable SNVT Type Index Network Variable SNVT Type nciLocation SNVT_str_asc(36) nviTraneVar2 UNVT nciChillerEnable SNVT_switch(95) nvoTraneVar9 UNVT nciMinOutTm SNVT_time_sec(107) nvoStatusOutputs SNVT_state(83) nciSndHrtBt SNVT_time_sec(107) nvoCprsrsRunning SNVT_state(83) nciCapacityLim SNVT_lev_percent(81) nvoCondFans SNVT_state(83) nciCoolSetpt SNVT_temp_p(105) nvoEvapWtrPump SNVT_switch(95)
  • Page 61 User-defined network variable variable types (SNVTs) to make types them easy to understand. User-defined configuration property types These user-defined types have been created by Trane for use by Trane controllers. User-defined network variable types (UNVTs) UNVT_purge_information Structure definition Field in structure...
  • Page 62 Installation - Electrical UNVT_refrig Range of enumeration values Enumeration Definition Description (reference: ARI guideline K) RT_R11 R-11 (Trichlorofluoromethane) RT_R12 R-12 (Dichlorodifluoromethane) RT_R13 R-13 (Chlorotrifluoromethane) RT_R13B1 R-13B1 (Bromotrifluoromethane) RT_R14 R-14 RT_R21 R-21 RT_R22 R-22 (Chlorodifluoromethane) RT_R23 R-23 (Trifluoromethane) RT_R32 R-32 RT_R40 R-40 RT_R112 R-112...
  • Page 63 1 Number of compressors on circuit 2 Unsigned 8-bit 0-3; number of compressors on circuit 2 Total length Enumeration definitions for UCPT_chiller_type Enumeration um n (Trane chiller model designators) 12-254 Unused Invalid (unknown) UCPT_manufacturing_location Range of enumeration values Enumeration...

  • Page 64: Operating Principles

    12 = Relief valve temperature only 13 = Service valve FSL = Flow switch PI = Gauge (supplied by Trane - option) PT = Pressure transducer PHR = Partial Heat Recovery option PSH = High pressure relief valve CW = Chilled water...
  • Page 65 Operating Principles Figure 28 - System schematic for Free-Cooling units LA only LA only 1 = Screw compressor PZH = High pressure switch 2 = Evaporator PZL = Low pressure switch 3 = Air-cooled condenser TT = Temperature sensor 4 = Evaporator water inlet connection TCE = Electric expansion valve 5 = Evaporator water outlet connection OPT = Option...
  • Page 66 Operating Principles Figure 29 - System schematic for Total Heat Recovery units 1 = Screw compressor PSL = Low pressure relief valve 2 = Evaporator PZH = High pressure switch 3 = Air-cooled condenser PZL = Low pressure switch 4 = Evaporator water inlet connection TT = Temperature sensor 5 = Evaporator water outlet connection...

  • Page 67: Pre-Start Checkout

    Pre-Start Checkout Installation Checklist Unit Piping Electrical Wiring Complete this checklist as the unit is Flush all unit water piping before WARNING! To prevent injury or installed and verify that all making final connections to the death, disconnect electrical power recommended procedures are unit.

  • Page 68: General

    Free-Cooling units, also check and (disconnects, terminal block, engaged to determine what set the A70 module. treatment, if any, is advisable. Trane contactors, compressor junction 13 Stop the chilled water pump. box terminals, etc.). to be sure warranty specifically excludes 14 Energize compressor and oil they are clean and tight.

  • Page 69: Unit Voltage Power Supply

    Pre-Start Checkout Unit Voltage Power Supply CAUTION! Provide adequate voltage Unit Voltage Phasing to the unit. Failure to do so can Voltage to the unit must meet the WARNING! It is imperative that L1, cause control components to criteria given in the Installation- L2, L3 in the starter be connected in malfunction and shorten the life of Electrical Section.

  • Page 70: Water System Flow Rates

    Pre-Start Checkout Proper compressor motor electrical Water System Flow Rates phasing can be quickly determined Establish a balanced chilled water and corrected before starting the flow through the evaporator. The unit. Use a quality instrument, such flow rates should fall between the as the Associated Research Model 45 minimum and maximum values Phase Sequence Indicator, and...

  • Page 71: Unit Start-Up Procedures

    Unit Start-up Procedures Daily Unit Start-Up For Free Cooling units only: To allow the system to operate even in case of failure on chiller or on free At power up, the unit will choose The time line for sequence of cooling side, a menu allows the either if it should start in Free- operation is shown at the end of this...

  • Page 72: General

    Use only refrigerants follows: specified on the unit nameplate (HFC 134a) and Trane Oil 00048. 1 Check the evaporator refrigerant Failure to do so may cause pressure and the condenser compressor damage and improper refrigerant pressure under unit operation.

  • Page 73: Seasonal Unit Start-Up Procedure

    Unit Start-up Procedures Seasonal Unit Start-Up System Restart After Procedure Extended Shutdown 1 Close all valves and re-install the Follow the procedures below to drain plugs in the evaporator. restart the unit after extended shutdown: 2 Service the auxiliary equipment according to the start- 1 Verify that the liquid line service up/maintenance instructions...

  • Page 74: Unit Shutdown Procedures

    Unit Shutdown Procedures Temporary Shutdown And Extended Shutdown Restart Procedure To shut the unit down for a short The following procedure is to be time, use the following procedure: followed if the system is to be taken out of service for an 1 Press the STOP key on the UCM- CLD.

  • Page 75: Maintenance

    Maintenance General Weekly Maintenance Annual Maintenance Perform all maintenance procedures While unit is running in stable 1 Perform all weekly and monthly and inspections at the conditions. procedures. recommended intervals. This will 1 Check UCM-CLD pressure for 2 Check oil sump oil level while unit prolong the life of the chiller and Evaporator, Condenser and Oil.

  • Page 76: Maintenance Procedures

    Trane valve performance and fans. Where operation, maintenance and service 7 Stay aware of unit enhancements, applicable, each unit is factory preset...

  • Page 77: Refrigerant And Oil Charge Management

    Maintenance Procedures Refrigerant and Oil Charge Some symptoms of a refrigerant Some symptoms of an oil under over charged unit: charged unit: Management - High Subcooling - Compressor rattle or grinding Proper oil and refrigerant charge is - Larger than normal condenser sound essential for proper unit operation, approach temperatures (Entering...

  • Page 78: Isolating The Refrigerant In The High Pressure Side

    Maintenance Procedures Isolating the refrigerant 5 Once the compressor stops, close Isolating the refrigerant the discharge service valve on the charge in the high pressure charge in the low pressure compressor (this valve is optional side for Low Side Repairs. side for High Side Repairs on RTAD).

  • Page 79: Adding Refrigerant

    RTAD 115 7 Remove old filter element. RTAD 125 RTAD 145 8 Inspect replacement filter element RTAD 150 and lubricate o-ring with Trane RTAD 165 OIL00048. RTAD 180 Note: do not use mineral oil. It will RTAD 085 HE RTAD 100 HE contaminate the system.

  • Page 80: Lubrication System

    RTAD 165 RTAD 180 found in other components. foul the condenser and evaporator RTAD 085 HE performance. This will result in RTAD 100 HE inefficient operation of the chiller. RTAD 115-125 HE Taken to an extreme, high oil levels...

  • Page 81: Factory (Initial) Oil Charging Procedure

    (oil analysis, compressor filter CAUTION! Use only Trane Oil 00048 replacement, re-tubing the in the RTAD units to avoid any evaporator, and so forth.).

  • Page 82: Field Oil Charging Procedure

    Maintenance Procedures Note: Ensure that the compressor is Field Oil-Charging 11 Open the other compressor not pressurized. isolation valves. Procedure 3 Open the flare fitting on the oil-line Note: this procedure assumes that Use the initial charging procedure shut off valve. the oil that is put into the filter when virtually all of the oil has been housing does not have contaminants...

  • Page 83: Evaporator Heat Tape Checkout Procedure

    Maintenance Procedures Evaporator Heat Tape Safety recommendations Checkout Procedure To avoid accidents and damage, the following recommendations should CAUTION! If the heat tapes wrapped be observed during maintenance around the evaporator barrel fail, the and service visits: evaporator will freeze causing catastrophic damage to the entire 1.
  • Page 84 Stocking Location Europe Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. Only qualified technicians should perform the installation and servicing of equipment referred to in this publication.

This manual is also suitable for:

Rtad 150Rtad 165Rtad 180Rtad 125Rtad 100Rtad 115 ... Show all

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