Trane RTAA-100 Installation & Maintenance Manual Download Page 67 | Manualshive

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RTAA-SVX01A-EN

67

Operating Principles

Compressor Description

The compressors used by the Model RTAA Series “R” Air-cooled chiller
consists of two distinct components: the motor and the rotors.

Compressor Motor

A two-pole, hermetic, squirrel-cage induction motor (3600 rpm) directly drives
the compressor rotors. The motor is cooled by suction refrigerant gas from
the evaporator, entering the end of the motor housing through the suction
line.

Figure 32

RTAA Refrigeration System and Control Components

&RQGHQVHU

(YDSRUDWRU

1.

Discharge Service Valve

9.

Subcooler

17.

Saturated Evaporator Rfgt.
Temp. Sensor

2.

Oil Separator

10.

Low Pressure Switch

18.

Relief Valve

3.

1/4" Angle Valve

11.

Liquid Line Service Valve
(Backseat Port Upstream)

19.

Compressor Suction Rfgt. Temp
Sensor

4.

Oil Cooler

12.

Schrader Valve

20.

Suction Service Valve

5.

Quick Connect Shutoff
Valve or Angle Valve

13.

Filter/Dryer

21.

Evaporator Entering Water
Temp. Sensor

6.

Oil Temperature Sensor

14.

Sight Glass

22.

Evaporator Leaving Water
Temp. Sensor

7.

Condenser

15.

Electronic Expansion Valve

23.

Entering Water Connection

8.

Saturated Condenser Rfgt.
Temp Sensor

16.

1/4" Angle Valve

24.

Leaving Water Connection

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Summary of Contents for RTAA-100

Page 1: ...dard Inc 2005 Models RTAA RTAA 70 RTAA 80 RTAA 90 RTAA 100 RTAA 110 RTAA 125 Installation Operation Maintenance Series R Air Cooled Rotary Liquid Chillers Packaged Air Cooled Chiller RTAA 70 125 Remot...

Page 2: ...refrigerants and the equipment that is used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible managem...

Page 3: ...emote Evaporator 31 System Configuration and Interconnecting Refrigerant Piping 31 Line Sizing 38 Example Liquid Line Sizing 39 Suction Line Sizing Steps 40 Piping Installation Procedures 44 Refrigera...

Page 4: ...Periodic Maintenance 115 Weekly Maintenance 115 Monthly Maintenance 115 Annual Maintenance 116 Maintenance 119 Coil Cleaning 119 Chemically Cleaning The Evaporator 120 Water Treatment 120 Oil Separat...

Page 5: ...RTAA outdoor unit nameplates are applied to the exterior of the Control Panel A compressor nameplate is located on each compressor Outdoor Unit Nameplate The outdoor unit nameplate provides the follo...

Page 6: ...Inspection Checklist To protect against loss due to damage incurred in transit complete the following checklist upon receipt of the unit Inspect the individual pieces of the shipment before accepting...

Page 7: ...t these variables when necessary to optimize operational efficiencies avoid chiller shutdown and keep producing chilled water An optional remote display is available to monitor unit operation from a r...

Page 8: ...30 30 30 30 Total Airflow CFM 68 380 68 380 73 365 78 355 82 950 87 550 Nominal RPM 855 855 855 855 855 855 Tip Speed Ft Min 6715 6715 6715 6715 6715 6715 Motor HP Ea 1 1 1 1 1 1 1 1 1 1 1 1 Min Start...

Page 9: ...400 50 3 4 460 60 3 5 575 60 3 Digit 9 Compressor Starter Type Y Y Delta Closed Transition X X Line Across the Line Digit 10 11 Design Sequence AO First Sequence Factory Input Digit12 Evaporator Leavi...

Page 10: ...te the chilled water lines and any other por tions of the system as required to prevent sweating under normal oper ating conditions or freezing during low ambient temperature conditions Start unit und...

Page 11: ...or unit operating weight i e including completed piping and full operating charges of refrigerant oil and water Refer to Figure 13 for unit operating weights Once in place the outdoor unit must be lev...

Page 12: ...12 RTAA SVX01A EN Installation Mechanical Figure 4 RTAA Rigging and Lifting Weights Packaged Unit...

Page 13: ...RTAA SVX01A EN 13 Installation Mechanical Figure 5 RTAA Rigging and Lifting Weights Remote Evaporator...

Page 14: ...14 RTAA SVX01A EN Installation Mechanical Figure 6 RTAA Rigging and Lifting Weights Pump Package Aluminum Fins...

Page 15: ...RTAA SVX01A EN 15 Installation Mechanical Figure 7 RTAA Rigging and Lifting Weights Pump Package Copper Fins...

Page 16: ...insulation and heat tape CAUTION Freezing Equipment Damage To prevent damage due to freezing do not install the unit outside without adequate freeze protection The remote evaporator should be mounted...

Page 17: ...x lifting plates provided on the unit Attach lifting chains or cables to the chains installed above Each cable alone must be strong enough to lift the chiller Attach cables to lifting beam Total lifti...

Page 18: ...18 RTAA SVX01A EN Installation Mechanical Figure 8 Dimensions and Clearances for RTAA Packaged Unit 70 125 Tons...

Page 19: ...RTAA SVX01A EN 19 Installation Mechanical Figure 9 Dimensions and Clearances for RTAA with Remote Evaporator 70 125 Tons...

Page 20: ...20 RTAA SVX01A EN Installation Mechanical Figure 10 Remote Evaporator Dimensions RTAA 70 125 Tons...

Page 21: ...RTAA SVX01A EN 21 Installation Mechanical Figure 11 Remote Evaporator Dimensions RTAA 110 125 Tons...

Page 22: ...22 RTAA SVX01A EN Installation Mechanical Figure 12 Dimensions and Clearances for RTAA with Pump Package 70 125 Tons...

Page 23: ...unit carefully Refer to Unit Leveling Now fully tighten isolator mounting bolts Unit Leveling Before snugging down the mounting bolts level the unit carefully Check unit level end to end by placing a...

Page 24: ...24 RTAA SVX01A EN Installation Mechanical Figure 13 Isolator Placement for Typical RTAA Packaged Unit 70 125 Tons...

Page 25: ...RTAA SVX01A EN 25 Installation Mechanical Figure 14 Isolator Placement for RTAA with Remote Evaporator...

Page 26: ...end Be sure to provide additional vents at high points in the piping to bleed air from the chilled water system Install necessary pressure gauges to monitor the entering and leaving chilled water pre...

Page 27: ...tors Shutoff isolation valves Thermometers if desired Cleanout tees Relief valve Pipe strainer Leaving Chilled Water Piping Air vents to bleed air from system Air vents to bleed air from system Water...

Page 28: ...iaries refer to Interlock Wiring Specific connection and schematic wiring diagrams are shipped with the unit Some piping and control schemes particularly those using a single water pump for both chill...

Page 29: ...warranty specifically excludes liability for corrosion erosion or deterioration of Trane equipment Trane assumes no responsibilities for the results of the use of untreated or improperly treated wate...

Page 30: ...ry installed on the packaged unit evaporator and will protect it from freezing in ambient temperatures down to 20 F 2 Install heat tape on all water piping pumps and other components that may be damag...

Page 31: ...onnecting refrigerant piping between the remote evaporator and the outdoor condensing unit and liquid line isolation valves In some instances the installing contractor may also need to lengthen the fa...

Page 32: ...eed 20 inches or Less RQGHQVHU RLO LTXLG LQH 6XFWLRQ LQH RPSUHVVRU 5HPRWH YDSRUDWRU 9 6LJKW ODVV LOWHU ULHU Figure 18 Remote Evaporator Installation No Elevation Difference Rise of Suction and Liquid...

Page 33: ...RLO LTXLG LQH 6XFWLRQ LQH RPSUHVVRU 5HPRWH YDSRUDWRU 9 6LJKW ODVV LOWHU ULHU LTXLG 7UDS HLJKW HTXDO WR 7RS RI RQGHQVHU 0D LPXP Figure 20 Remote Evaporator Installation Condensing Unit Below Evaporato...

Page 34: ...circuit 1 on the outdoor condensing unit must be connected with circuit 1 on the remote evaporator and likewise for circuit 2 See Figure 21 for circuit number identification RTAA Circuit Capacities a...

Page 35: ...on of gas flow 5 Suction lines must be insulated 6 The line sizes defined in Table 4 5 and 6 are to be used only for 40 50 F leaving water temperature and or full load ice making applications NOTE The...

Page 36: ...75 1 375 1 625 300 1 375 1 375 1 375 1 625 300 1 375 1 375 1 375 1 625 50 Ton Circuit 60 Ton Circuit Total Equiv Length ft Liquid Line Size OD Total Equiv Length ft Liquid Line Size OD Horizontal or D...

Page 37: ...a height above the condenser coils The high est point of the suction line piping must not exceed 4 inches above the outdoor condensing unit suction line connection point 10 When the elevation of the...

Page 38: ...field installed piping 2 Multiply the length from step 1 by 1 5 to estimate the equivalent length 3 Using Table 4 for the proper tonnage circuit look in the Horizontal or Downflow column Find the outs...

Page 39: ...the OD is 1 1 8 inches 7 From Table 3 for 1 1 8 OD long radius elbows the equivalent feet is 6 elbows x 1 9 feet 11 4 feet 8 Adding equivalent feet from step 7 to step 1 gives 11 4 feet 117 feet 128...

Page 40: ...e circuit tonnage This is the diameter of the upflow suction line and any fittings in the upflow line 3 With the diameter found in step 2 use Table 3 to find the equivalent length of each fitting in t...

Page 41: ...ion line and any fittings in the upflow line NOTE The diameters of the upflow and horizontal or downflow portions of the suction line may differ depending on the application Example Suction Line Sizin...

Page 42: ...unit and runs horizontally 5 feet to the outdoor condensing unit From Figure 23 the actual length of liquid line is 41 feet 25 11 5 With the previously mentioned assumptions Table 7 indicates 15 feet...

Page 43: ...QVHU RLO 5HPRWH YDSRUDWRU IHHW RI KRUL RQWDO VXFWLRQ DFFXPXODWRU DW D KHLJKW QRW WR H FHHG LQFKHV DERYH WKH VXFWLRQ OLQH FRQQHFWLQJ SRLQWV IHHW KRUL RQWDO UXQ DW WKH VDPH HOHYDWLRQ DV WKH UHPRWH HYDSR...

Page 44: ...caps as this may allow copper chips to contaminate the system Use a tubing cutter or heat to remove the end caps WARNING Prevent Injury When sweating line connections always provide a sufficient purge...

Page 45: ...RTAA SVX01A EN 45 Installation Remote Evaporator Figure 24 Refrigerant Sensor Mounting and Wiring...

Page 46: ...off valve the oil line shutoff valve and any field installed valves are open in the proper position before evacuating Insulate the entire suction line and the suction accumulator line Where the line i...

Page 47: ...ield installed pipe is 75 feet for each suction line and liquid line Assume that the suction lines have been previously determined to be in O D and the liquid lines are in 1 1 8 O D Relief Valve Venti...

Page 48: ...e relief valves are 3 8 SAE flare connections They have a 300 psig relief setpoint and relieve at 10 21 lba min The connection size and locations are shown in the chiller s submittals Refer to local c...

Page 49: ...e appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power a...

Page 50: ...20 10 1 0 5 0 0 75 460 60 235 300 300 2 101 84 522 410 10 1 0 2 5 0 75 575 60 191 250 225 2 81 67 420 328 10 1 0 2 2 0 75 346 50 270 350 300 2 117 96 585 485 10 1 0 2 7 0 75 400 50 236 300 300 2 101 8...

Page 51: ...1 0 2 5 0 75 RTAA 100 460 60 3 4 1 218 300 250 2 84 84 410 410 10 1 0 2 5 0 75 460 60 5 6 6 221 300 250 2 84 84 410 410 10 1 0 2 5 0 75 460 60 7 5 10 3 224 300 350 2 84 84 410 410 10 1 0 2 5 0 75 RTAA...

Page 52: ...Units Only NOTE Units with the Remote Evaporator option do not have heat tape The evaporator shell is insulated from ambient air and protected from freezing temperatures by a thermostatically controll...

Page 53: ...contacts Examples of the input at termi nals 1U1 TB3 3 and 4 would be a time clock ambient thermostat building automation system etc 2 UCM Pump Control Contacts Terminals 1U1 TB4 8 and 9 This output...

Page 54: ...p Service Settings Menu and the diagnostics which are issued for each set of conditions Alarm Running Maximum Capacity Indicator Wiring If the optional remote Alarm Running Maximum Capacity contacts a...

Page 55: ...gnostics that the Alarm Relay s is Active MMR CMR diag MAR CAR diag IFW 1 1 YES NO NO 2 1 YES YES NO 3 1 YES YES YES 4 1 YES NO YES 5 2 YES NO NO 6 2 YES YES NO 7 2 YES YES YES 8 2 YES NO YES 9 3 YES...

Page 56: ...is enabled These customer supplied contact closures must be compatible with 12 VDC 45 mA resistive load Silver or gold plated contacts are recommended To install cut strip and wire nut existing wire l...

Page 57: ...ted voltage input 2 10 VDC 3 An isolated current loop input 4 20 mA To enable external setpoint operation External Chilled Water Setpoint Operator Settings Menu should be set to E using the Clear Lang...

Page 58: ...s referenced to the UCM chassis ground To assure correct operation 2 10 VDC or 4 20 mA signals must be isolated or floating with respect to the UCM chassis ground Minimum setpoint 0 F 2 0 VDC input Ma...

Page 59: ...points 40 to 120 a field furnished 50 Kohm log taper potentiometer 10 and a fixed 820 ohm 10 1 4 Watt resistor should be wired in series and connected to terminals TB1 6 and TB1 8 of options module 1U...

Page 60: ...C or 4 20 mA signals must be isolated or floating with respect to the UCM chassis ground Optional Bidirectional Communications Link BCL This option allows the Clear Language Display in the control pan...

Page 61: ...rom the proper terminals of 1U2TB2 on the UCM to the Tracer There is no polarity requirement for this connection 5 At the UCM the shield should be cut and taped to prevent any contact between the shie...

Page 62: ...be used for wire entry prior to mounting the panel NOTE On the back of the panel is a knockout for an electrical outlet box if one is to be used Prior to mounting the panel the actual microprocessing...

Page 63: ...in the unit s buffer module 1U7 to terminals J1 and J1 in the Remote CLD Be sure that one lead is connected to the terminal at each end and the other lead is connected to the terminal at each end For...

Page 64: ...he Remote CLD is not necessary Multiple Unit Operation In a multiple unit configuration the Remote CLD Panel has the capability to communicate with up to four units Each unit requires a separate commu...

Page 65: ...RTAA SVX01A EN 65 Installation Electrical Figure 31 Remote Display Panel Interconnecting Wiring...

Page 66: ...cription Figure 32 represents the refrigeration system and control components Vaporized refrigerant leaves the evaporator and is drawn into the compressor Here it is compressed and leaves the compress...

Page 67: ...ontrol Components RQGHQVHU YDSRUDWRU 1 Discharge Service Valve 9 Subcooler 17 Saturated Evaporator Rfgt Temp Sensor 2 Oil Separator 10 Low Pressure Switch 18 Relief Valve 3 1 4 Angle Valve 11 Liquid L...

Page 68: ...iving action between the male and female rotors occurs Oil is injected along the top of the compressor rotor section coating both rotors and the compressor housing interior Although this oil does prov...

Page 69: ...bottom of the oil separator is at condensing pressure during compressor operation therefore oil is constantly moving to lower pressure areas Refer to Figure 33 As the oil leaves the separator it pass...

Page 70: ...ed and the slide valve moves to the fully unloaded position so the unit always starts fully unloaded Oil Filter Each compressor is equipped with a replaceable element oil filter The filter removes any...

Page 71: ...essure for a one hour period Otherwise the unit will trip off line and display the High Differential Pressure diagnostic Figure 34 Fan State at Circuit Startup 1 5 8 7 1 5 8 7 21752 3 1 B B B 1 5 8 7...

Page 72: ...ents Actual controlling setpoints Specific temperatures Specific Pressures Enable Disable status of features and options Selection status of SI units or English units Under Over voltage protection Dis...

Page 73: ...ntries can be contained under the Custom Report Items can be deleted from the Custom Report by pressing the minus key when the desired read out is on the display The operator must be in the Custom Rep...

Page 74: ...ented by pressing the Minus key Once a setpoint is changed the Enter key must be pressed to save the new setpoint If the Cancel key is pressed the setpoint value on the display will be ignored and the...

Page 75: ...is pressed if a compressor is running This key has a red background color surrounding it to distinguish it from the others If the chiller is in the Stop mode pressing the Auto key will cause the UCM...

Page 76: ...CE 0UMPDOWN 3 404 3 52 OCAL 4RACER PERATING ODE 0 4 4 23 AN ONTROL 3ERVICE 3ETTING ENU 3 7R 7 9 855 17 0 7 6 732 17 RQ QH W SDJH 02 23 5 7 1 02 5 48 67 6 732 17 6285 6 737 6285 5 5357 67 786 75 7 036...

Page 77: ...IS NOT ENABLED OT APPLICAL ON DOMESTIC UNITS 7 9 855 17 0 7 6 732 17 5 5 287 225 5 7 03 5 785 21 7 03 5 785 1H W 1H W URP 7 5 75 17 5 1 7 5 7 03 RQ SUHYLRXV SDJH 7R KHDGHU RI KLOOHU 5HSRUW ASHES WILL...

Page 78: ...86 72 217 18 7 9 3 5 7 35 6685 36 7 21 5 7 35 6685 36 7 3565 68 7 21 5 7 7 03 7 6 785 7 9 3 5 7 7 03 7 6 785 7 21 7 7 03 7 9 3 5 7 35 6685 36 7 21 5 7 35 6685 36 7 3565 68 7 21 5 7 7 03 7 6 785 7 9 3...

Page 79: ...NSER IMIT 2UN VAPORATOR IMIT 2UN URRENT IMIT 3TOPPING 3ERVICE 0UMPDOWN RPSUHVVRU 5HSRUW 2035 6625 5 3257 02 56 67576 5 35 66 1 7 35 9 286 72 217 18 2035 66256 21 121 5 8 76 2 287 7 7 121 1 92 76 2035...

Page 80: ...77 1 7 5 3803 2 0 187 6 35 66 72 1 6 77 1 7R 5217 3 1 855 17 0 7 6 737 RQ QH W SDJH 3 52 OCAL 4RACER EFAULT 3ELECT TO F 4 BY UTOUT 3ETPT TO CHANGE IS DISPLAYED REFER TO THE SECTION ON EAVING 7ATER 4EM...

Page 81: ...7 1 7 4 54 PERATOR SETTINGS MENU 3 7 5 5 6 7 7 3 7 3 35 66 72 1 6 77 1 4YPE OF HILLED 7ATER 2ESET 3ELECTED BOVE 2 452 7 4 2 54 2 2 3 7 3 7 3 5 6 7 5 7 2 35 66 72 1 6 77 1 7R 7 3 7 3 67 57 5 6 7 6 737...

Page 82: ...O 490 2ETURN EFAULT 2ANGE TO ONE EFAULT 2ANGE TO UTDOOR EFAULT 2ANGE TO EFAULT ISABLE EFAULT 3ELECT TO URP 7 3 7 3 5 6 7 5 7 2 RQ SUHYLRXV SDJH 7 3 7 3 67 57 5 6 7 6 737 35 66 72 1 6 77 1 7 3 7 3 0 5...

Page 83: ...ISABLE EFAULT 3ELECTIONS EFAULT SEC 3ELECT TO SEC 6 59 6 77 1 6 1 6 81 76 35 66 1 7 35 9 286 72 217 18 35 66 17 5 72 2 63 3 3 66 25 5 48 5 72 81 2 EPRESS EITHER NTER OR EXT 63 1 3 5 2 17 5 3 66 25 72...

Page 84: ...G AX APACITY UTPUTS FOR DETAILS EFAULT ISABLE 2EFER TO SECTION ON 0ASSWORDS FOR DETAILS 1 3565 67 576 2856 35 66 72 1 6 77 1 63 81 76 81 76 35 66 72 1 6 77 1 1 8 1 8 35 66 72 1 6 77 1 352 5 00 5 6 783...

Page 85: ...P 6HOHFW 6HUYLFH 6HWXS 0HQX RQ SUHYLRXV SDJH 6 59 6 7 83 0 18 35 66 1 7 35 9 286 72 1 6 77 1 3 63 2 785 35 66 72 1 6 77 1 6 5 66 35 66 72 1 6 77 1 9 75 7 03 87287 6 732 17 35 66 72 1 6 77 1 2 5 7 7 03...

Page 86: ...E RESPONSIVE DECREASE TO MAKE LESS RESPONSIVE EFAULT 3ELECT TO NCREASE TO MAKE MORE RESPONSIVE DECREASE TO MAKE LESS RESPONSIVE EFAULT 3ELECT TO EFAULT 3ELECT TO 3 6 5 9 56 3527 7 21 35 66 72 1 6 77 1...

Page 87: ...0 18 RQ SUHYLRXV SDJH 7R 0 1 21 85 7 21 0 18 2035 6625 02 12 35 35 66 72 1 6 77 1 OMPRESSOR ODEL O 0REFIX 2035 6625 7216 7216 35 66 72 1 6 77 1 S THERE A OMPRESSOR 9 3 2035 6625 7216 7216 35 66 72 1...

Page 88: ...FORCED TO ISABLE EFAULT ISABLE EFAULT 3ELECT URP V WKHUH D RPSUHVVRU RQ SUHYLRXV SDJH 7R 0 1 21 85 7 21 0 18 2035 6625 7216 7216 35 66 72 1 6 77 1 S THERE A OMPRESSOR 9 3 2035 6625 7216 7216 35 66 7R...

Page 89: ...ART 7INDING EFAULT 3ELECT TO EFAULT 3ELECT TO EFAULT 3ELECT TO 180 5 2 16 5 8 7 16 35 66 72 1 6 77 1 5 8 1586 67 57 1 35 66 72 1 6 77 1 855 17 295 6 77 1 3565 35 66 72 1 6 77 1 S THERE A OMPRESSOR 9 3...

Page 90: ...A 54 24 TON UNITS ARE TO BE RUN WITH 2 REFRIGERANT ONTACT A QUALIFIED SERVICE TECHNICIAN FOR FURTHER DETAILS URP V WKHUH D RPSUHVVRU RQ SUHYLRXV SDJH 7R 0 1 21 85 7 21 0 18 855 17 295 6 77 1 3565 35...

Page 91: ...7 18 6 59 3803 2 1 3565 35 66 72 1 6 77 1 S THERE A OMPRESSOR 9 3 6 59 3803 2 1 3565 35 66 72 1 6 77 1 S THERE A OMPRESSOR 9 3 6 59 3803 2 1 3565 35 66 72 1 6 77 1 S THERE A OMPRESSOR 9 3 6 59 3803 2...

Page 92: ...ESSOR 9 3 URP 9 7 67 5 8 7 RQ SUHYLRXV SDJH EFAULT ISABLE EFAULT ISABLE EFAULT ISABLE EFAULT ISABLE EFAULT 5 EFAULT 5 2035 6625 7 67 3565 35 66 72 1 6 77 1 2035 6625 7 67 3565 35 66 72 1 6 77 1 2035 6...

Page 93: ...Otherwise this alarm LED is deenergized If more than one diagnostic is present only the highest priority active diagnostic will be explained in detail For example if three diagnostics occur in the fo...

Page 94: ...the unit If the outdoor temperature subsequently increases to 5 F above the setpoint the UCM will automatically re enable the unit The low ambient lockout feature has a range from 20 F to 60 F Electro...

Page 95: ...the UCM will reset the chilled water temperature setpoint based on either the return water temperature zone air temperature or outdoor air temperature The 1U2 Module is necessary to preform CWR The f...

Page 96: ...toward the desired CWS based on the above equations and setup parameters at a rate of 1 F every 5 minutes This applies when the chiller is both running and off Normally the chiller will start at the...

Page 97: ...sors are de energized it will produce an IFW diagnostic If the leaving water temperature drops below the cutout setpoint while the compressors are energized for 30 F seconds the unit will shut down on...

Page 98: ...e ice making mode equals the leaving chilled water temperature Leaving Chilled Water Temp F Leaving Water Temp Cutout F Low Refrig Temp Cutout F Recommended Ethylene Glycol Solution Freeze Point F 40...

Page 99: ...ip anytime after the grace period a CMR diagnostic will occur Balanced Compressor Starts and Hours This feature is enabled disabled in Balanced Starts and Hours Service Settings Menu When enabled the...

Page 100: ...ion Oil Failure Protection The 70 to 125 Ton units do not use the differential pressure switch to monitor for an oil line restriction The logic of the UCM uses a comparison of the entering oil tempera...

Page 101: ...0 50 1 10 00000 0 460 60 50 1 10 00000 0 575 60 40 1 09 01111 15 40 200 60 142 1 02 11011 27 230 60 124 1 02 10001 17 346 50 72 1 01 00111 7 380 60 75 1 01 01010 10 400 50 62 1 10 10001 17 460 60 62 1...

Page 102: ...override Local Auto Remote Stop and Remote Auto 2 Local Auto will always override Local Stop Remote Stop and Remote Auto 3 Remote Stop will override Local Auto and Remote Auto but not Local Stop 4 Re...

Page 103: ...ns to be sure they are clean and tight Verify that all refrigerant valves as shown in Figure 32 are OPEN CAUTION Compressor Damage Do not operate the unit with the compressor oil suction and liquid li...

Page 104: ...lgae or slime It is recommended that the services of a qualified water treatment specialist be engaged to determine what water treatment if any is required Trane assumes no responsibility for equipmen...

Page 105: ...age on any leg is not within specified range notify the supplier of the power and correct the situation before operating the unit CAUTION Equipment Damage Inadequate voltage to the unit may cause cont...

Page 106: ...fore starting the unit Use a quality instrument such as the Associated Research Model 45 Phase Sequence Indicator and follow this procedure 1 Press the Stop key on the Clear Language Display 2 Open th...

Page 107: ...ause tube erosion and damage to the tube supports and baffles in the evapo rator CAUTION Evaporator Freezing Damage Once the evaporator is filled with water the evaporator heat tape must be energized...

Page 108: ...heaters must be energized for a minimum of 24 hours prior to unit operation to prevent compressor damage caused by liquid refrigerant in the compressor at start up Verify that the evaporator heat tap...

Page 109: ...dentified by a noticeable temperature differential between the two sides of the restriction Frost may form on the line at this point Proper refrigerant charges are shown in Table 1 CAUTION Equipment C...

Page 110: ...110 RTAA SVX01A EN Start Up Procedures Figure 37 Unit Sequence of Operation...

Page 111: ...pressure before opening the system See unit nameplate for refrigerant type Do not use non approved refrigerants refrigerant substitutes or refrigerant additives Failure to follow proper procedures or...

Page 112: ...the differential to start must be above the setpoint 2 All system operating interlocks and safety circuits must be satisfied Extended Shutdown Procedure The following procedure is to be followed if t...

Page 113: ...that all refrigerant valves are open before starting the unit 2 Close the main disconnect and unit mounted disconnect if installed to energize the compressor sump heaters If the optional control tran...

Page 114: ...saline or brackish water 6 Close the fused disconnect switch that provides power to the chilled water pump 7 Start the chilled water pump and while chilled water is circulating inspect all piping for...

Page 115: ...efrigerant charge non condensable or excessive pressure drop in the liq uid line A restriction in the line can sometimes be identified by a notice able temperature differential between the two sides o...

Page 116: ...analysis to deter mine system moisture content and acid level This analysis is a valuable diagnostic tool Contact a qualified service organization to leak test the chiller to check operating and safet...

Page 117: ...min 45 min Unit Phase A B Voltage A C B C Compressor Phase A Amps B C Unit Operating Mode Last Diagnostic Evaporator Entering Water Temp F or C Evaporator Leaving Water Temp F or C Outdoor Air Tempera...

Page 118: ...Model No Prefix Type Reset Ratio Number of Compressors Type Start Reset Setpt Oil Loss Differential Setpt Type Max Reset Setpt Compressor A Tons Ice Machine Control D E Compressor B Tons Panel Ice Ter...

Page 119: ...low all safety instructions could result in death or serious injury Clean the condenser coils at least once each year or more frequently if the unit is located in a dirty environment This will maintai...

Page 120: ...oneous readings Water Treatment The use of untreated or improperly treated water in the unit may result in the formation of scale algae or slime It may also cause erosion or corrosion It is recommende...

Page 121: ...w the steps listed below 1 Shut off the compressor and disconnect all electrical service to the com pressor 2 Connect manifold gauge sets to the backseat ports of the suction and dis charge service va...

Page 122: ...es on the compressor by jumpering the proper terminals at the UCM 11 Evacuate to 400 microns from the three ports in Step 2 and perform a rise test 12 De energize the three solenoid valves 13 Reconnec...

Page 123: ...6XFWLRQ 6HUYLFH 9DOYH HURTXLS 9DOYH RXSOLQJ RU QJOH 9DOYH 2LO LOWHU RYHU 2LO LOWHU RYHU 3ODWH 6FKUDGHU 9DOYH 8SVWUHDP RI 2LO LOWHU OHPHQW RSSHU JDVNHW XQGHU WKLV EROW KHDG LVFDUJH 6HUYLFH 9DOYH RPSUHV...

Page 124: ...150 200 250 300 Condensing Pressure Suction Pressure PSID Oil Filter Pressure Drop PSID Normal Pressur Drop Maximum Pressure Drop 50 60 Ton Compressor Oil Filter Replacement Chart 0 5 10 15 20 25 30...

Page 125: ...u NOTE Service Pumpdown can only be enabled for one compressor at a time Only one pumpdown per compressor can be performed until the unit has been reset If these requirements are not met and Service P...

Page 126: ...igh side through the access port on the liquid line service valve that has the manifold gauge set attached to it 9 Open all of the valves and run the unit Verify the refrigerant charge by measuring th...

Page 127: ...The chilled water flow switch input was open for more than 6 seconds Compressor Overload Setting Cprsr A IFW The CPM NovRam Based overload setting did not agree with the MCSP Dip Switch overload setti...

Page 128: ...nt the display vectoring you to a different display state when you are trying to set either the chilled water setpoint or the leaving water temp cutout setpoint as it will in the case of a diagnostic...

Page 129: ...cted on Cprsr A trip at 405 or 7 PSIG High Pressure Cutout Cprsr B CMR A high pressure cutout was detected on Cprsr B trip at 405 or 7 PSIG High Pressure Cutout Cprsr C CMR A high pressure cutout was...

Page 130: ...is operating on all Engineering ROM defaults for all setup parameters Check all setup parameters and continue to run chiller Replace the Chiller Module as soon as a replacement is available NOTE It is...

Page 131: ...Loss Cprsr A CMR No current was sensed on one or more of the current x former inputs Must hold 20 RLA Must trip 5 RLA Time to trip shall be 1 second minimum 3 seconds maximum Phase Loss Cprsr B CMR Sa...

Page 132: ...B CMR Same as Diagnostic for Cprsr A above Severe Phase Unbalance Cprsr C CMR Same as Diagnostic for Cprsr A above Severe Phase Unbalance Cprsr D CMR Same as Diagnostic for Cprsr A above Slaved EXV E...

Page 133: ...f IPC comm from the 1U6 module U1 Indicating U7 Communications CMR The 1U1 has det a loss of IPC comm from the 1U7 module U3 Indicating U1 Communications MMR The 1U3 has det a loss of IPC comm from th...

Page 134: ...et Selected IFW Open or Short a Use end of range value whatever value the open or short gives b Clear diag when the resistance returns to normal range c If Shorted go into the ice making mode if Ice M...

Page 135: ...nsit off loading and installation can loosen the connections and the tightening of some connec tions may be required Pre Start Review and Inspection Before starting the system it is important to revie...

Page 136: ...ifferential Pressure Circuit with light red often called pump fault protection This feature automatically starts the lag pump after a time delay if the differential pressure sensed in the suction and...

Page 137: ...TIME DISCONNECT POWER SUPPLY TO PANEL Pump Checkout Procedure 1 Verify electric power and water are available 2 All valves including main suction valve and discharge valves must be in closed position...

Page 138: ...pen Pump 1 discharge valve 5 Fill the entire building system and observe the high point valve until all the air is released and then close the valve 6 Turn Pump 1 H O A switch to the OFF position 7 Re...

Page 139: ...upply required capacity Responsibility for final impeller siz ing remains with ITT Bell Gossett C 2X3X7 1750 R P M Figure 43 D Pump Curves Before Impeller Trim 14 TOTAL HEAD IN FEET TOTAL HEAD IN METE...

Page 140: ...upply required capacity Responsibility for final impeller siz ing remains with ITT Bell Gossett 1750 R P M E 2 5X3X7 Figure 45 F Pump Curves Before Impeller Trim TOTAL HEAD IN FEET TOTAL HEAD IN METER...

Page 141: ...connects should be turned off The complete start up pro cedure should be followed when placing the unit back in service Maintenance Periodic maintenance requirements are minimal If water contains dirt...

Page 142: ...Noisy Pump Motor Motor bearings worn Pump impeller clogged Inadequate suction pressure Piping stress Suction valve closed Entrapped air Pump leaks Mechanical seal damaged Casing gasket damaged Loose b...

Page 143: ...RTAA SVX01A EN 143 Pump Package Figure 47 Pump Package Piping Schematic...

Page 144: ...144 RTAA SVX01A EN Pump Package...

Page 145: ...the nameplates mounted on the unit Table 22 Legend Drawing Number Description Page 2307 3327 Schematic Page 1 146 2307 3328 Schematic Page 2 Low Ambient 148 2307 6516 Schematic Page 2 Std Ambient 150...

Page 146: ...146 RTAA SVX01A EN 3327...

Page 147: ...RTAA SVX01A EN 147...

Page 148: ...148 RTAA SVX01A EN 3328...

Page 149: ...RTAA SVX01A EN 149...

Page 150: ...150 RTAA SVX01A EN 6516...

Page 151: ...RTAA SVX01A EN 151...

Page 152: ...152 RTAA SVX01A EN 3329...

Page 153: ...RTAA SVX01A EN 153...

Page 154: ...154 RTAA SVX01A EN 6472...

Page 155: ...RTAA SVX01A EN 155...

Page 156: ...RTAA SVX01A EN 156 3330...

Page 157: ...157 RTAA SVX01A EN...

Page 158: ...158 RTAA SVX01A EN 6046...

Page 159: ...RTAA SVX01A EN 159...

Page 160: ...160 RTAA SVX01A EN 3331...

Page 161: ...RTAA SVX01A EN 161...

Page 162: ...162 RTAA SVX01A EN 6519...

Page 163: ...RTAA SVX01A EN 163...

Page 164: ...164 RTAA SVX01A EN 6047...

Page 165: ...RTAA SVX01A EN 165...

Page 166: ...166 RTAA SVX01A EN 3325...

Page 167: ...RTAA SVX01A EN 167...

Page 168: ...168 RTAA SVX01A EN 6048...

Page 169: ...RTAA SVX01A EN 169...

Page 170: ...to 350 MCM 400 50 310 Amp 8 to 350 MCM 250 Amps 6 to 350 MCM 225 Amps 6 to 350 MCM RTAA 100 200 60 760 Amp 4 to 500 MCM 600 Amps Two 3 0 to 500 MCM 600 Amps Two 3 0 to 500 MCM 230 60 760 Amp 4 to 500...

Page 171: ...All All Class CC 600V 10 Amp 1F15 Control Power All 200 230 Class CC 600V 5 Amp Transformer 380 400 4Amp 1F16 1F17 460 575 4 Amp CPM MCSP All All Buss GMC 1 4 0 25 Amp 5x20 mm 1U1F1 1U4F1 1U5F1 Littl...

Page 172: ...172 RTAA SVX01A EN 3326...

Page 173: ...RTAA SVX01A EN 173...

Page 174: ...174 RTAA SVX01A EN 6049...

Page 175: ...RTAA SVX01A EN 175...

Page 176: ...176 RTAA SVX01A EN 6463...

Page 177: ......

Page 178: ...ns should perform the installation and servicing of equipment referred to in this bulletin Literature Order Number RTAA SVX01A EN File Number SV RF RTAA SVX01A EN 0905 Supersedes RTAA IOM 4A Stocking...

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