Trane CenTraVac 2100 Operation & Maintenance Manual Download Page 1

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PETITIONER EXHIBIT 1019

Summary of Contents for CenTraVac 2100

Page 1: ...nels Design Sequence AO r h cDHF OM 1 Service Literature Refrigeration Centrifugal Liquid Chillers CDHF Operation Maintenance CDHF OM 1 March 6 1997 SV RF CTV CDHF OM 1 397 New _r h I L I 1 X39640472 G1 SinI e T ComPIItIY wi policy fI pnxU I impro nant it ve 1he rV tto c hang spec ir caliolla 81d delign wilKlut notice ThIIIfIIIIIIIaIIon and I8IVicirva III aquipmenlRIfarnId to in this bockJallIhouI...

Page 2: ...trol Circuits 16 Duplex Chiller Loading Sequence 17 Duplex Unit UCP2 Displays and DiaQnostic Description 18 Chiller Report Settings 18 Operator SettinQs 18 Service Settings 18 Diagnostic Description 18 Vane Actuator Control 20 Circuit Breaker 1CB3 Oil Pump 20 Unit Start Up Procedures 20 Dailv Unit Start Up 20 Seasonal Unit Start Up 21 Unit Shutdown Proc edures 22 Daily Unit Shutdown 22 Seasonal Un...

Page 3: ...ater Cool CenTraVac With UCP2 Control Panel 54 CenTraVac Checksheet and Request for Serviceman 56 Fi1lure and Table Index Figure 1 Illustrates the General Component Layout of a Typical CDHF Chiller 10 Figure 2 CDHF Pressure Enthalpy Curve 11 Figure 3 CDHF Compressor Lubrication System 12 Fiaure 4 Motor Cooling and Oil Reclaim 14 Figure 5 Control Panel Layouf 15 FiQure 6 Rotary Valve in Drain Posit...

Page 4: ... Unit Hertz 50 Hertz product code is gIVen on this page 284 DSEQ Design Sequence AO Factory Assigned NTON Compressor Nominal Capacity 2100 2100 Nominal Tons 2500 2500 Nominal Tons 2150 2150 Nominal Tons VOLT Nota Unit mounted starters are identified by a separate number found on the starter CPM1 Compressor Motor Power LH Circuit 285 286 287 288 289 290 291 292 293 CPM2 297 298 299 300 301 302 303 ...

Page 5: ...288 326 LRRF Inlet LH Rear 289 328 LRRF Outlet RH Front LFRR Inlet LH Front 290 329 LFRR Outlet RH Rear 291 330 RRLF Inlet LH Rear RRLF Outlet LH Front LFRT Inlet LH Front 293 LFRT Outlet RH Top EVBS CDBS Condenser Tube Bundle Size LFRB Inlet LH Front Evaporator Tube Bundle Size 2100 Nominal Ton Condo LFRB Outlet RH Bottom 2100 Nominal Ton Evap 2300 Nominal Ton Condo 2300 Nominal Ton Evap 2500 Nom...

Page 6: ...s Condenser Limit Controls LBRT Inlet LH Bottom 2 Part Load YES Condenser Limit Controls LBRT Outlet RH Top CWT3 Customer Witness 3 Part Load CWR RBLF Inlet RH Bottom CWTS Customer Witness RBLF Outlet LH Front with Sound Chilled Water Reset Ambient CWS1 Customer Witness YES Chilled Water Reset Ambient RBLR Inlet RH Bottom Sound Part 1 Load RBLR Outlet LH Rear CWS2 Customer Witness Sound Part 2 Loa...

Page 7: ...rter RLA SRL2 Starter Current Transformer RH Circuit 94 94 Max Starter RLA 187 187 Max Starter RLA 372 372 Max Starter RLA 553 553 Max Starter RLA 606 606 Max Starter RLA 700 700 Max Starter RLA 810 810 Max Starter RLA 935 935 Max Starter RLA 1080 1080 Max Starter RLA 1212 1212 Max Starter RLA 1215 1215 Max Starter RLA 1402 1402 Max Starter RLA 1856 1856 Max Starter RLA PNC2 Panel Connection LH Ci...

Page 8: ...itchs 300 PSI Product Coding Definition THRM Thermometers TME 1 Thermometer 10 extd well 2TME 2 Thermometers 10 extd well 3TME 3 Thermometers 10 extd well TMS 1 Thermometer 10 extd well 2TMS 2 Thermometers 10 extd well 3TMS 3 Thermometers 10 extd well TlMR Timer 1 TR5 1 TR5 Timer 2 TR5 2 TR5 Timers 3 TR5 3 TR5 Timers SRMT Control Meters CTRB Volt and Amp Meters CTRV Volt CTRA Amp Meters Performanc...

Page 9: ...air of the unit Product Description Block Trane 60 Hz Model CDHF Hermetic CenTraVac units are defined by the product definition and selection system PDS Each unit is defined by the product description block which appears on the unit nameplate CDHF IN 1 shows an example of a unit nameplate Commonly Used Acronyms ASME American Society of Mechanical Engineers ASHRAE American Society of Heating Refrig...

Page 10: ...al from the condenser tubes absorbs heat from UCP this heater energizes as The duplex unit has 2 CDHF the refrigerant causing it to needed to maintain an oil tank tem compressors on independent condense The liquid refrigerant perature of 140 to 145 F 60 63 C evaporator and condenser circuits then flows out of the bottom of the When the chiller is operating the Control is accomplished by a duplex c...

Page 11: ...ustrates the General Component Layout of a Typical CDHF Chiller h Motor rennine eox Oil SumJ UCP2 Panel UCP2 Panel Purge Rupture Disk Evap 10 h Motor Tennini I Box 1 10 Oil I Sump __ Nameplate CDHF OM 1 Page 11 of 58 PETITIONER EXHIBIT 1019 ...

Page 12: ... CDHF Figure 2 CDHF PresaurelEnthalpy Curve Liquid Refrlgnnt In Ecanomiz Economizer t InlitPIpe _ CoI r _ t7 4 Compntaor 2nd st ge EnIhIIpy BTlNl 8M 11 t Compntaor 111 Stage CDHF OM 1 Page 12 of 58 PETITIONER EXHIBIT 1019 ...

Page 13: ... CDHF Compressor Lubrication System CIIJIIIIIII SKI b1 LOW 01 1IWSIIUCIIt 1 t1 j k wo t 11 Ir II 1 V J 01 ICOiiIi t 01 TMII 7 COIIDOISER ICONIIMZDt I l r Frl UOUID 10 laIN l IM I 1MnII 12 CDHF OM 1 Page 13 of 58 PETITIONER EXHIBIT 1019 ...

Page 14: ...essurized motor cooling system is a coil inside the cooler shell As the illustrated in Figure 4 oil passes through this coil it is cooled by a mixture of gaseous and liquid refrigerant flows from the liquid refrigerant that blows around condenser sump to the bottom of the coil exterior Once the cooled oil the compressor motor where it leaves the cooler shell it flows enters the motor chamber throu...

Page 15: ... System r Ir l CJ 1 OIL L J CCINIDaUI _ CCICIUNI 10 Hca _ _ COOlM SVIIEM OL a COMI IDIIIII u V t 411EC1M1n1C1111UC11DNaMII __ ca IIICLMt f iIIIIGMnIIt DID_ CIIICII Mf r IIXIIIDIIZIII UIIUID _ _ 10 ICON CC1 I a aM1DI 14 CDHF OM 1 Page 15 of 58 PETITIONER EXHIBIT 1019 ...

Page 16: ... functions All housed in the UCP2 unit control modules communicate with each panel on the unit the starter panel other thru the IPC circuit and the purge control panel Control Panel layout is illustrated in Figure 5 Figure 5 Control Panel Layout 00 00 00 00 00 00 00 o 0 00 00 00 00 00 0 01 00 0 0 1 00 00 CO 00 D 15 CDHF OM 1 Page 16 of 58 PETITIONER EXHIBIT 1019 ...

Page 17: ...aker 2CB1 closed 120 volt control power is provided through control power transformer 2T5 and a 30 amp starter panel fuse 2F4 to terminal 1TB 1 in the UCP2 control panel From this point control voltage flows to Circuit Breaker 1CB1 supplying power to starter module 2U1 via terminal 2TB1 6 for starter contractors operation and the high condenser pressure switch 381 Circuit Breaker 1CB2 supplying po...

Page 18: ... limit setpoint closed through relay 2U1 J14 comp sor staging All other VVhen the DCM detects a change in plaCing the transition resistors 2R1 tPc lnts are controlled at each one of these front panel setpoints 2R2 and 2R3 in parallel with the IndiVidual mpressor UCP2 cle r on one of the panels it transfers the t d language display panel Each Unit compressor mo or Win Ings can be reset or stopped s...

Page 19: ... Chilled Water Setpoint source closed for 50 seconds If the STOP key is pressed on the Clear language Display CLD the chiller will follow the same stop sequence as above except the chilled water pump relay 1U1 J12 will also open and stop the chilled water pump after the chilled water pump delay timer has timed out after compressor shut down Duxplex control has been added as a setting source 5 Curr...

Page 20: ...ions oeM Loss of The OCM module lost communcations ChecklPC Commwith ClV IFW with the Chiller A Starter Module for 15 Ves Wiring Starter A contiguous seconds Connection OCM Loss of The OCM module lost communcations ChecklPC Commwith ClV IFW with the Chiller B Starter Module for 15 Ves Wiring Starter B contiguous seconds Connection oeM Lass of The OCM module lost communcations ChecklPC Commwith ClV...

Page 21: ...actuator pump motor evaporator water temperature and An inlet guide vane stroke test is compares it to the chilled water conducted for BPI Binary Position Unit Start Up setpoint If the difference between Indicator Position on all resets Procedures these values is less than the start hardware and software if there D U t Start U differential setpoint cooling is not has not been a Momentary Power 81 ...

Page 22: ...gin boxes again If the fault condition has not cleared the UCP will not permit restart 4 Open all of the valves in the evaporator chilled water circuit When the cooling requirement is 5 If the evaporator was previously satisfied as determined by the drained vent and fill the evaporator differential to stop value the UCP and chilled water circuit When all Originates a Shutdown signal The air is rem...

Page 23: ...eve and discharge the refrigerant from the machine Continuous running of pumps while the machine is off may cause this condition to occur The rupture disk is designed to relieve If the pressure in the evaporator exceeds 15 psig WARNINGI To prevent injury or death A due to electrical shock or contact with moving parts use care when servicing system with power on CAUTIONI A Control power disconnect ...

Page 24: ...es for the Purifier Purge unit are covered in the latest Purge Operation and Maintenance manual Table 2 Record tubes non condensable in the system etc Important Atways refer to the local Trane office for the latest revisions Dally Maintenance and as there may be pertinent changes Checks made since the printing of this manual Check the chille s evaporator and condenser pressures oil tank pressure d...

Page 25: ...th due to Iectrlcal shock or contact with moving parts lock unit disconnect switch In open position Complete all recommended weekly maintenance procedures Refer to the previous sections for details Clean all water strainers in the CenTraVac water piping system Every 6 Months WARNINGI ATO prevent Injury or death due to lectrlcal shock or contact with moving parts lock unit disconnect switch In open...

Page 26: ...specially true allow the pin to drop into a detent at of critical process equipment this position 4 Allow at least 15 minutes for the oil to drain from the filter back into the oil sump 5 Pull the 0 handle to unlock the pin and rotate the valve to the CHANGE FILTER po ition This isolates the filter from the unit The locking pin should drop into a detent in this position 6 Remove and replace the fi...

Page 27: ...OTE ROTARY VALVE SHOWN IN DRAIN POSITION OIL PRESSURE REGUlATOR OIL SAMPLING TOP VIEW ROTARY VALVE LOCKING PIN __ VALVE LUBRICATION PORT VALVE R ll SIGHT GLASSES W FLOATING c ALUMINUM BALL FRONT VIEW 28 01L FEED LINE CDHF OM 1 Page 27 of 58 PETITIONER EXHIBIT 1019 ...

Page 28: ...in unnecessary release of refrigerant one of the following listed in order rnagnetically driven pump of preference a An EPA approved Iow pressure refrigerant recovery recycle unit b The available pressure differential Figure 7 4 When charging from new drums 6 Weigh in the proper charge use fitting designed for use with 314 in center drum bung of 2 inch 7 Use recovery recycle unit or bung Figure 7 ...

Page 29: ...for the job Remember a standard CAUnONI condenser water circuit is A Do not use untreated or composed solely of copper cast Improperly treated water or iron and steel equipment damage may occur Purge System Because some sections of the chiller s refrigeration system operate at less than atmospheric pressure the possibility exists that air and Condenser tube fouling is indicated when the approach t...

Page 30: ...Periodic Maintenance Figure 8 Chemical Cleaning Setup Cleaning Solution 29 CDHF OM 1 Page 30 of 58 PETITIONER EXHIBIT 1019 ...

Page 31: ...tem Fault nme Outs Reset Chilled water Flow Lost 6 10 seconds MAR Compressor Did Not Accelerate Maximum Acceleration Timer MMR Y Delta 27 sec Auto X former 16 sec Primary Reactor 16 sec Solid State Starter 15 sec AFD 12 sec Across the Line 6 sec Cond water Flow Overdue 4 25 minutes MAR Condenser water Flow Lost 6 10 seconds MAR EVaJ water Flow Overdue 4 25 minutes MAR Extended Compressor Surae 15 ...

Page 32: ...tout Instantaneous MMR 15 or 1 PSIG High Vacuum Lockout Instantaneous MMR R11 3 8 PSIA R123 3 1 PSJA R134a 12 8 PSIA R22 12 8 PSIA R12 24 8 PSIA Low Chilled Water Temp 30 dearee F seconds MAR Lva Wtr Temp Cutout SeJl K int Low Diff Oil Pressure 8 12 PSID 36 PSID sec MMR 12 PSID 8 PSID Instantaneous Low EV8P Rfat Tem 30 degree F seconds MMR Low RlIlt Tem Cutout Setpoint Low Oil Temp Start Inhibit O...

Page 33: ...t Chilled water Control option is installed Not available on CDHF Water Input 7 Free Cooling Disable Disable Help Note The Free Cooling Enable screen is displayed only Enable if the free cooling OPtion is installed Not available on CDHF 8 Chilled Water Reset Type Disable Return Help Note This screen is suppressed when the chiner is under Constant Disable Duplex Control and it is Compressor B Retur...

Page 34: ...ta The following will be displayed only if Hotwater Front Control is installed If the Tracer Option is installed the word Panel Front Default will appear in front of the setpoint source Help Note External Panel External Source This choice shows up only if the External Hot Source Water Setpoint is installed at the Machine Configuration menu I Not avaUable on CDHF is Ice Termination Setpoint Source ...

Page 35: ...op Setpolnt 1 to 10 F 5F 8 Evap Cond Pump Off Delay Time Help Note Evap Pump Off Delay If the current running Oto 30 Min 1 Min mode is hot water control state the following display is substituted for the above display Cond Pump Off Delay 9 Printer Satups Help Note 111is screen is shown only when the Printer Option Enter Enter is installed If Enter is pressed the following screens are displayed to ...

Page 36: ... Address 1 to 127 65 14 Power Up Start Delay Time oto 600 Sec OSee 15 Design Delta Temperatura 4to30F 10 F 16 leaving Water Temperatura Cutout Setpolnt Help Note When this setpoint is within 1 7 F of the Front Panel ChUIed Water Setpoint the Front Panel Chilled Water 10to36F 36 0 F Setpoint is increased along with this setpoint to maintain the differential Help Note When this setpoint is adjusted ...

Page 37: ...r Over Voltage Protection Enable Help Note Under Over Voltage Protection is activated only if Disable Enable Disable Under Over Voltage Protection is enable and Line Voltage Sensing Option is installed 28 Phase Reversal Protection Enable Help Note This screen shall suppressed ifthe starter type is Disable Enable Enable AFD 29 Phase Unbalance Limit Enable Disable Enable Enable 30 Momentary Power Lo...

Page 38: ...ion is not instaRed _ Not available on CDHF 44 LWT Control Proportional Gain oto 100 10 0 45 LWT Control Integral Gain oto 1 F 0 110 JF 46 LWT Control Derivative Gain oto 10 0 F oo O F o to 50 000 Steps 47 IGV Maximum Travel Setpolnt 60000Steps 48 Guide Vane Closed Travel Stop oto 100 0 49 AF Adjustable Speed Control Algorithm Disable Enable Enable Enable SO AF Leaving Water Standard Deviation 0 5...

Page 39: ...ssure Analog Output Cond Delta Cond Option 67 Min Delta Pressure Calibration Help Note 2 VDC is the minimum output voltage This screen 0 400 0 sets the mininum pressure differential required 68 Max Delta Pressure Calibration Help Note 10 VDC is the maxinum output voltage This 1 400 PSID 30PSID screen sets the maxinum pressure differential 69 IGV Stroke Time 15 to 100 Sec 45 Sec 70 Low Differential...

Page 40: ...Latching Non Latching 8 Alann 3 latching Status Latching Non Latching Non Latching 9 Channel Scanner Installed Help Note This item shall be displayed only if the Channel Not Installed Scanner is installed 10 Scanner Channel 1 Active Active Help Note This item shaD be displayed only if the Channel Inactive Scanner is installed 11 Scanner Channel 2 Active Inactive Help Note This item shall be displa...

Page 41: ...t Actual 16 Auxiliary Input Alann Help Note The folowing items shall be displayed only if the Enable Enable Auxiliary Input is installed Range ofValues is 4 0 to 20 0 in Disable increment of 0 1 17 Analog Output Range 0 100 0 1000 0 1000 40 CDHF OM 1 Page 41 of 58 PETITIONER EXHIBIT 1019 ...

Page 42: ...Amps 0 2500 Amps SOOAmps 9 Motor heating Constant ot0100 Min 2SMin 10 Current Overload Settlna 1 00 through 31 00 11 Current Overload Setting 2 Decimal 255 224 throuah 225 12 Maximum Acceleration Timer 1 6 to 64 Sec 27 Sec 13 Maximum Acceleration Timer 2 191 to 249 Sec 228 Sec 14 Hot Water Control Option Not available on Installed Not CDHFl Not Installed Installed 15 External Chilled Water Setpoln...

Page 43: ...ge Temperature Sensor Option Installed Not Not Installed Installed 30 Ice Building Option Not available on CDHF Installed Not Not Installed Installed 31 Differential Water Press Sensing Option Help Note This option screen applies to both the Installed 1SO PSIG Evap and Condo differential water pressure Installed Not sensors for both systems less than or equal to 150 1SO PSIG Installed PSIG Sensors...

Page 44: ...t is set to Pulsed and Stepper Motor Stepper Motor Hot Gas Bypass Option is currently set to InslaUed the Hot Pulsed Gas Bypass Option wiU be set to Not Inslalled and will be disDlayed for 3 sec to Indicate the change 38 Oil Pressure Protection CVHElF G Transducer Transducer Diff Switch 43 CDHF OM 1 Page 44 of 58 PETITIONER EXHIBIT 1019 ...

Page 45: ...hange Setting 3 Humidity Zero Calibration Help Note If Next is pressed the fonowing humidity zero calbration screens are skipped IfEnter is pressed the screens are displayed to pennit humidity zero calbration Connect Humidity Zero Gas Open Gas Sample Valve XXXX PPM Humidity locking the Reading Humidity Zero Calibration Starting the calibration Procedure Successful calibration Calibration Failed 4 ...

Page 46: ... Flow 7 Condenser Differential Water Pressure Help Note The following will be displayed only if the Differential Water Pressure Sensor Option is Installed Cond Differential I ttr Press 8 Condenser Entering Leaving Water Pressure Help Note The following will be displayed only ifthe low pressure Differential Water Pressure Sensor Option is installed I Cond Enter Water Pressure Cond Leaving Water Pre...

Page 47: ...nload Commands Auto Hold Auto Help Note The following screen will be displayed only when Load the Inlet Guide Vane Output is set to Pulsed The possible Unload values of status are Auto Hold Load or Unload 16 Manual loading Unloading Duty Cycle Help Note The foIowing screen will be displayed only when Oto 50 30 the nlet Guide Vane Output is set to Pulsed Range of Values is 0 to 50 in increments of ...

Page 48: ...e water Leaving Evaporator water temperature sensor checkout _ F set point _ F trip point ice water Condenser High Pressure Switch checkout _ psig set point _ psig trip point Check Net Oil Pressure Check adjsutment and operaiton of inlet guide vane actuator stepper motor The stroke of the actuator motor is 10 000 stepslin and approximately 50 000 steps pull stroke Leak Test Chiller Refrigerant and...

Page 49: ...rcuits cornpatable eVes eNo JD Genenll lallon 0beemItI0ns C1 Is there eny apparent shipping or rigging damage 0 Ves D No C2 Record the preuure on the shipping ga __PSIG If there i no pressure on the gauge a leak test will have to be done before the unit can be evacuated 81d charged 03 Is the water piping c orrecIIy installed D Ves LJ No Flow Switches eVes DNo Pressure Gaugea Vea L No Isolation Val...

Page 50: ...tage pump with at least 5 CFM capacity Connect to the evaporator charging valve with a hose no smaller than 314 inch 10 5 Condenser Dlsolation and flow balancing valves installed o Calibrated thermometers and pressure gauges installed in out of condenser on machine side of any valve or elbow o If condenser pump controlled by UCP2 is field wiring correct and complete DCondenser pump s run system an...

Page 51: ...ned GPM design__ GPM actual ___ o Wiring free from abrasion kinks and sharp corners o Contactors and relays have freedom of movement o All contacts are free of corrosion or dirt Panel is free of dust debris etc o Check the ratio of the current transformers Record the part s on the start up log o Use only twisted shielded pair for the fPC circuit between the starter and the UCP2 on remote starters ...

Page 52: ...IF IT DIFFERS FROM THE DESIGN VOLTAGE o If Evaporator and or condenser water pumps are controlled by the UCP2 use the Service Test menu of the UCP2 to manually start and test the control of the pumps o Check the setting of the oil pressure regulating valve 1 Use the Service Tests menu of the UCP2 to manually start the oil pump 2 Proceed to the Compressor Report menu of the UCP2 and observe the Dif...

Page 53: ...all temporary power cords replace all fuses connect motor leads make final electrical inspection o Power up the motor starter Check for control voltage at control panel terminals 1TB1 1 and 1T81 2 __volts D Check current to the oil sump heater __amperes o As the oil heats up finish any operations not yet oompleted in preparation for starting the unit C Chi ler Start up 1 Make all preliminary check...

Page 54: ...valve near the top of the evaporator Open the valves and record or mark permanently the refrigerant level in the hose RECORD THIS LEVEL IT IS VERY IMPORTANTI At some later time the refrigerant charge can be easily checked and verified o Restart the chiller and carefully observe the starting and loading sequence 3 Instrudions to the Chiller Operator o Instructions for starting operating and shuttin...

Page 55: ...DAI A IIGH PRESSURE curour CIS1 AlA KW VOlTS HZ o Cut ln plig OCulout DESIGN DAI A From DaIign SpecifIcIIIioI SUWIIARY OF UNT 0P110NS INSTALLED RLA KW VOLTS HZ oT_ Convtulk ations Interface HER RECOVERY PERFORMANCE ORemote Clear I anguIIge DiIpIIy Mo lJIe RLA KW VOLTS HZ OOpdona ModulI CURRENT TRANSFOIIfeEI OOutdoor Air Sensor PMT MJMIJERS new Code end 2 Digit Extension DEnhanced l in1it Control P...

Page 56: ...MPS C DESIGN VOLTS COMPRESSOR VOLTAGE AB DESIGN HZ to COMPRESSOR VOLTAGE Be COMPRESSOR VOLTAGE CA COMPRESSOR WINDING TEMP W1 COMPRESSOR WINDING TEMP W2 COMPRESSOR WINDING TEMP W3 COMPRESSOR STARTS COMPRESSOR IlJt ItfWGTIME BEARING TEMPERAfURE 1 BEARING TENPERAlURE 2 OPERATING 0Ill EVB FRONT PANEL 041UB WATER SETPOINT DESIGN DELTATEMPSETPOINT lEAVING WATER TEMP QJTOUT SETPOINT LOW REFRIGERANT TEMP ...

Page 57: ...onnected on CenTraVac 0 01 1ed water pump 0 Cooling tower fan rotation checked 0 COlldell W pump 0 Heat I 8CXMII V condenser water pump as applicable 0 Power available for vaCWRl pump 0 115V AQ O All controls installed and connected 0 All fTlIV18Iic starters instaled and c ot1Il8Cted 0 NOTE 00 not make final CXlI iII8C1ions to COIlipr8II8Dr motor until i8qlM8t8d by hne Service R taIive 5 1iIstIng ...

Page 58: ...ed is 0 5 Cfrn per qU8I 8 foot ofthe equipment room space This requirement is for chllers located within the bulding which is the most common 0wMr Of ReMgerant Pracech ns Yes No 1 Has the owner been fully instructed on the proper use of refrigerwrt 1237 Yes No 2 Was the owner given a copy of the MSDS sheet for HCFC 123 Yes No 3 Was the owner given a copy of Trane publication CFC GUIDE 2 Refrigeran...

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