York YLUA0078 User Manual Download

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YLUA0078 – YLUA0158

AIR-COOLED SCROLL CONDENSING UNITS

STYLE A and B (60 HZ)

80 TON TO 160 TON

281 KW TO 522 KW

R-410A

035-22868-000

AIR-COOLED SCROLL CONDENSING UNITS

INSTALLATION, OPERATION, MAINTENANCE

Supersedes 150.73-NM1 (918)

Form 150.73-NM1 (920)

Issue Date:

September 4, 2020

Summary of Contents for YLUA0078

Page 1: ...CONDENSING UNITS STYLE A and B 60 HZ 80 TON TO 160 TON 281 KW TO 522 KW R 410A 035 22868 000 AIR COOLED SCROLL CONDENSING UNITS INSTALLATION OPERATION MAINTENANCE Supersedes 150 73 NM1 918 Form 150 73...

Page 2: ...this document and any referenced materials This in dividual shall also be familiar with and comply with all applicable industry and governmental standards and regulations pertaining to the task in que...

Page 3: ...05 NM2 Shipping Damage Claims 50 15 NM AFFECTED PAGES DESCRIPTION 3 Conditioned Based Maintenance program information added 18 Motor Current Module paragraph removed 85 Isolator locations updated in...

Page 4: ...JOHNSON CONTROLS 4 FORM 150 73 NM1 ISSUE DATE 09 04 2020 YL NOMENCLATURE NOTE See Nomenclature Pin on page 23 for additional information on PIN...

Page 5: ...s and Options 17 Unit Components 20 Nomenclature Pin 23 Basic Unit 23 Refrigerant Flow Diagram 27 Process and Instrumentation Diagram 28 SECTION 3 HANDLING AND STORAGE 29 Delivery and Storage 29 Inspe...

Page 6: ...102 Transformer 102 Single System Select and Programming Number of Compressors 102 Status Key 103 Display Print Keys 108 Entry Keys 116 Setpoints Keys 117 Unit Keys 124 SECTION 8 UNIT OPERATION 131 C...

Page 7: ...ervice Mode Analog and Digital Inputs 142 Control Inputs Outputs 143 Checking Inputs and Outputs 145 Optional Printer Installation 149 SECTION 10 MAINTENANCE 153 Important 153 Compressors 153 Condense...

Page 8: ...ual Point Wiring 74 FIGURE 14 Wiring 76 FIGURE 15 Micro Panel Connections 78 FIGURE 16 Elementary Diagram 80 FIGURE 17 Unit Clearances All Models 87 FIGURE 18 Sample Printout Supplied in the Isolator...

Page 9: ...ol For 4 Compressors 6 Steps 132 TABLE 25 YLUA0078 YLUA0095 Condenser Fan Control Using Outdoor Ambient Temperature and Discharge Pressure 135 TABLE 26 YLUA0078 YLUA0095 Condenser Fan Control Using Di...

Page 10: ...JOHNSON CONTROLS 10 FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 11: ...namically balanced for vibration free operation They are directly driven by independent motors and positioned for vertical air dis charge The fan guards are constructed of heavy gauge rust resistant c...

Page 12: ...liance with the safety requirements listed above However the individual operating or working on any machinery is primarily responsible for Personal safety safety of other personnel and the machinery C...

Page 13: ...ied per sonnel Electrical The unit must be grounded No installation or main tenance work should be attempted on the electrical equipment without first switching power OFF isolat ing and locking off th...

Page 14: ...JOHNSON CONTROLS 14 FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 15: ...exposed power wiring is routed through liquid tight non metallic conduit GENERAL SYSTEM DESCRIPTION Compressors The condensing unit has suction gas cooled hermetic scroll compressors The YLUA compress...

Page 16: ...lt shutdown data for up to the last six fault shutdown conditions An RS 232 port in conjunction with this press to print button is provided to permit the capability of hard copy print outs via a separ...

Page 17: ...r terminals Compressor motor starting contactors per l E C Control power terminals to accept incoming for 115 1 60 control power Fan contactors and overload current protection The power wiring is rout...

Page 18: ...ot Gas By Pass Permits continuous stable opera tion at capacities below the minimum step of compres sor unloading to as low as 5 capacity depending on both the unit and operating conditions by introdu...

Page 19: ...Unrestricted air flow is permitted through generously sized louvered openings This option is ap plicable for any outdoor design ambient temperature up to 115 F 46 C Factory mounted Sound Attenuation O...

Page 20: ...HNSON CONTROLS 20 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 2 PRODUCT DESCRIPTION UNIT COMPONENTS Figure 2 UNIT COMPONENTS FRONT FAN ASSEMBLIES CONTROL PANEL CONDENSER COILS POWER PANEL COMPRESSOR...

Page 21: ...1 SECTION 2 PRODUCT DESCRIPTION FORM 150 73 NM1 ISSUE DATE 09 04 2020 2 Figure 3 POWER PANEL COMPONENTS LD13247 COMPRESSOR CONTACTORS XTBF1 FAN CONTACTORS FAN CONTACTOR COMPRESSOR OVERLOADS FAN FUSES...

Page 22: ...4 2020 SECTION 2 PRODUCT DESCRIPTION Figure 4 POWER PANEL CONTROL COMPONENTS COMPRESSOR OVERLOADS COMPRESSOR CONTACTORS FAN CONTACTORS FAN FUSES CONTROL RELAY MICROCOMPUTER CONTROL CENTER MICROPANEL D...

Page 23: ...ENCLATURE PIN Basic Unit FEATURE FEATURE DESCRIPTION OPTION OPTION DESCRIPTION MODEL Model PIN 1 4 YLUA YLUA CAP Capacity PIN 5 8 0078 0078 0088 0088 0095 0095 0098 0098 0108 0108 0130 0130 0148 0148...

Page 24: ...IN 18 X No Control Transformer Required T Control Transformer Required Q Special Control Transformer Required PFC Power Factor Capacitor 19 X No Power Capacitor required C Power Capacitor required Q S...

Page 25: ...it Q Special Hot Gas Bypass required GAUGE PIN 34 X X Q Special Quote OVERLOAD PIN 35 X X Q Special Quote PIN36 PIN 36 X X Q Special Quote HTR Crankcase Heater Pin 37 H Crankcase Heater Standard Q Spe...

Page 26: ...factory 8 Louvered Full Unit Encl Panels field 9 End Louver End Hail Guard Encl Panels factory A End Louver End Hail Guard Encl Panels field Q Special Enclosure Panels ACOUSTIC Acoustic Blanket PIN 49...

Page 27: ...LINE SOLENOID VALVE TXV SIGHT GLASS MOISTURE INDICATOR SOLENOID OPERATED HOT GAS BYPASS VALVE YCUA REFRIGERANT FLOW DIAGRAM NOTE YCUA0078 0158 HAVE TWO REFRIGERANT SYSTEMS HOT GAS OPTION SYSTEM 1 ONL...

Page 28: ...LPC P Condenser Fans Fans YLLSV S See P R V Options Compressors Control Functions DV Displa y Value CHT Chilled Liquid Temperature HPC High Pressure Cutout LPC Low Pressure Cutout HPL High Pressure L...

Page 29: ...ical damage To prevent inadvertent operation of the pressure relief devices the unit must not be steam cleaned It is recommended that the unit is periodically in spected during storage INSPECTION Imme...

Page 30: ...uld be used in order to pre vent damage to the unit from the lifting chains Units are provided with lifting eyes in the sides of the base frame which can be attached to directly using shackles or safe...

Page 31: ...nits must be installed with sufficient clearances for air entrance to the condenser coil for air discharge away from the condenser and for servicing access In installations where winter operation is i...

Page 32: ...ions are intend ed to ensure satisfactory operation of the unit Failure to follow these recommendations could cause damage to the unit or loss of performance and may invalidate the warranty When ducti...

Page 33: ...ESSURE CUTOUT A high pressure cutout is installed in the discharge pip ing of each system The cutout opens at 585 10 psig and closes at 440 25 psig ELECTRICAL WIRING Field Wiring Power wiring must be...

Page 34: ...nal block XTBC2 terminals 23 to 24 are normally open contacts that can be used to switch field supplied power to provide a start signal to the evaporator blower contactor Contacts will close whenever...

Page 35: ...and installed TXV sizing should be equal in size or slightly smaller than the capacity of the circuit If multiple coil sections are utilized a TXV for each section sized accordingly must be installed...

Page 36: ...CT AT 36 DEG LIQ AT 105 DEG SUCTION LINES SIZE ID CU FT DENSITY LB CU FT OZ FT GRAMS 30 CM 1 3 8 in 35 mm 1 3 0 0 2 1 0 3 8 1 1 5 8 in 41 mm 1 5 0 0 2 1 0 4 11 5 2 1 8 in 54 mm 2 0 0 0 2 1 0 7 20 0 2...

Page 37: ...nit or system an ambient temperature of 95 F 35 C and a suction temperature of 45 F 7 2 C 2 Suction line sizes were calculated based on a nominal maximum pressure drop to 3 psi 100 ft 20 7 kPa 30 5 m...

Page 38: ...d to ensure reliable oil re turn at reduced loads Table 5 on page 39 indicates when a double suction riser should be used for listed pipe sizes to provide adequate oil return at reduced loads The calc...

Page 39: ...not included in the tables and must be taken into account when determining pressure drop or gain of the liquid line The nominal value that must be included in the liquid line loss or gain is 0 5 psi...

Page 40: ...0 Micropanel Power Supply if Control Transformer not Supplied Flow Switch See electrical note 9 It is possible that multiple sources of power can be supplying the unit power panel To prevent serious i...

Page 41: ...OTE START STOP LOAD LIMIT INPUT Figure 10 CONTROL WIRING CONTROL WIRING LD13344A Factory wired with optional transformer XTBC2 BLOWER LD07730C MUST BE CLOSED TO OPERATE It is possible that multiple so...

Page 42: ...JOHNSON CONTROLS 42 FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 43: ...hnson Controls Office for application guidelines The evaporator is protected against freezing to 20 F 28 8 C with an electric heater as stan dard For operation at temperatures below 25 F 3 9 C the opt...

Page 44: ...eight Lbs 3713 3989 4185 4911 5146 5221 6473 6628 Compressors Scroll Type 0078ZE 0088ZE 0095ZE 0098ZE 0108ZE 0130ZE 0148ZE 0158ZE Compressors Per Circuit 3 3 3 3 3 2 2 2 3 2 2 2 3 2 3 2 Compressors Pe...

Page 45: ...240V 28 230 1 60 15A 10A 15A 30 A 240V 40 380 1 60 15A 10A 15A 30 A 480V 46 460 1 60 15A 10A 15A 30 A 480V 50 380 415 1 60 15A 10A 15A 30A 415V 58 575 1 60 15A 10A 15A 30 A 600V A Minimum 14 AWG 75 C...

Page 46: ...ICIENCY UNIT ELECTRICAL DATA 5 COMPR MODEL eff Pump Model Volt Code Pump FLA MCA MIN N F DS MIN DUAL ELEM FUSE MAX DUAL ELEM FUSE MAX CB SYSTEM 1 COMPR 1 COMPR 2 RLA LRA RLA LRA 0095 SE X 17 391 600 4...

Page 47: ...RLA LRA RLA LRA QTY FLA LRA 56 425 2 7 6 44 0 110 599 56 425 2 7 6 44 0 56 425 2 7 4 37 0 110 599 56 425 2 7 4 37 0 36 239 2 4 5 23 1 69 358 36 239 2 4 5 23 1 27 187 2 4 0 19 0 55 310 27 187 2 4 0 19...

Page 48: ...200 27 187 27 187 58 148 200 175 175 24 148 24 148 Table 13 HIGH EFFICIENCY UNIT ELECTRICAL DATA 4 COMPR MODEL Eff Pump Model Volt Code Pump FLA MCA MIN N F DS MIN DUAL ELEM FUSE MAX DUAL ELEM FUSE M...

Page 49: ...2 4 5 23 1 27 139 27 139 27 139 2 4 5 23 1 27 187 2 4 0 19 0 23 150 23 150 23 150 2 4 0 19 0 24 148 2 2 9 15 3 20 109 20 109 20 109 2 2 9 15 3 SYSTEM 1 SYSTEM 2 COMPR 3 FAN COMPR 1 COMPR 2 COMPR 3 FAN...

Page 50: ...50 175 135 150 150 175 58 120 150 150 150 120 150 150 150 Table 16 STANDARD EFFICIENCY UNIT ELECTRICAL DATA 5 COMPR MODEL EFF VOLT Code System 1 System 2 MCA MIN N FDS MIN DUAL ELEM FUSE and MIN CB MA...

Page 51: ...1 COMPR 2 COMPR 3 COND FANS COMPR 1 COMPR 2 COMPR 3 COND FANS RLA LRA RLA LRA RLA LRA QTY FLA LRA RLA LRA RLA LRA RLA LRA QTY FLA LRA 56 425 56 425 56 425 2 7 6 44 0 110 599 56 425 2 7 6 44 0 56 425 5...

Page 52: ...250 300 40 243 400 300 300 141 150 175 200 46 193 250 225 225 111 150 125 150 58 172 200 200 200 97 100 110 125 Table 18 HIGH EFFICIENCY UNIT ELECTRICAL DATA 4 COMPR MODEL EFF VOLT Code System 1 Syste...

Page 53: ...4 7 6 44 0 110 599 110 599 110 599 4 7 4 37 0 110 599 56 425 110 599 4 7 4 37 0 69 358 69 358 69 358 4 4 5 23 1 69 358 36 239 69 358 4 4 5 23 1 55 310 55 310 55 310 4 4 0 19 0 55 310 27 187 55 310 4...

Page 54: ...00 S5 400 S5 2 3 0 250kcmil 300 S5 400 S5 2 3 0 250kcmil 2 4AWG 500kcmil 250 S4 250 S4 6AWG 350kcmil 250 S4 250 S4 6AWG 350kcmil 2 4AWG 500kcmil 250 S4 250 S4 6AWG 350kcmil 225 S3 225 S3 S4 S5 4AWG 30...

Page 55: ...d stopping of the unit and or operation at ambient temperatures in excess of 95 F 35 C is antici pated 4 Maximum fuse size is based upon 225 of the rated load amps for the largest motor plus 100 of th...

Page 56: ...M Compressor Contactor Including Coil Suppressor KCR Control Relay KP Pump Contactor Part Including Coil Suppressor KT Relay Timer M Compressor Motor MF Motor Fan DESIGNATION DESCRIPTION MP Motor Pump...

Page 57: ...lly control wiring not connected to the YORK control panel should not be run through the panel If these precautions are not followed electrical noise could cause malfunctions or damage to the unit and...

Page 58: ...Alternate connections shown for different two speed motor types 26 Only fitted on systems with a maximum of 4 fans 27 220 230V units require a separate fuse for units w 4 or more fans per system 28 Lo...

Page 59: ...JOHNSON CONTROLS 59 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK 5 5...

Page 60: ...JOHNSON CONTROLS 60 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA WIRING DIAGRAMS Figure 11 ELEMENTARY WIRING DIAGRAM Elementary Wiring Diagrams 035 21583 101 REV D...

Page 61: ...JOHNSON CONTROLS 61 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 62: ...JOHNSON CONTROLS 62 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D 035 21583 102 REVD...

Page 63: ...JOHNSON CONTROLS 63 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 64: ...JOHNSON CONTROLS 64 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 65: ...JOHNSON CONTROLS 65 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 66: ...JOHNSON CONTROLS 66 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA 035 21589 107 REV A FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 67: ...JOHNSON CONTROLS 67 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 68: ...JOHNSON CONTROLS 68 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D 035 21589 106 REVE...

Page 69: ...JOHNSON CONTROLS 69 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 11 ELEMENTARY WIRING DIAGRAM CONT D...

Page 70: ...JOHNSON CONTROLS 70 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA Power Options Connection Diagram Figure 12 POWER OPTIONS CONNECTION DIAGRAM LD13234A 035 21589 103 REVB...

Page 71: ...JOHNSON CONTROLS 71 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 LD13901 FIGURE 12 POWER OPTIONS CONNECTION DIAGRAM CONT D...

Page 72: ...JOHNSON CONTROLS 72 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA FIGURE 12 POWER OPTIONS CONNECTION DIAGRAM CONT D 035 21589 101 REVC...

Page 73: ...JOHNSON CONTROLS 73 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 12 POWER OPTIONS CONNECTION DIAGRAM CONT D...

Page 74: ...JOHNSON CONTROLS 74 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA 035 21583 116_rev Figure 13 SINGLE POINT AND DUAL POINT WIRING...

Page 75: ...JOHNSON CONTROLS 75 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK 5 5...

Page 76: ...JOHNSON CONTROLS 76 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA Wiring 035 21583 106 REVA LD13238 Figure 14 WIRING...

Page 77: ...JOHNSON CONTROLS 77 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 14 WIRING CONT D LD13239...

Page 78: ...JOHNSON CONTROLS 78 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA Micro Panel Connections Figure 15 MICRO PANEL CONNECTIONS 035 21589 102 REVD...

Page 79: ...JOHNSON CONTROLS 79 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 15 MICRO PANEL CONNECTIONS CONT D...

Page 80: ...JOHNSON CONTROLS 80 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA Figure 16 ELEMENTARY DIAGRAM LD13992A 035 21583 103 REV B...

Page 81: ...JOHNSON CONTROLS 81 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 LD13993A 1 FIGURE 16 ELEMENTARY DIAGRAM CONT D...

Page 82: ...JOHNSON CONTROLS 82 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 5 TECHNICAL DATA FIGURE 16 ELEMENTARY DIAGRAM CONT D 035 21589 105 REVA...

Page 83: ...JOHNSON CONTROLS 83 SECTION 5 TECHNICAL DATA FORM 150 73 NM1 ISSUE DATE 09 04 2020 5 5 FIGURE 16 ELEMENTARY DIAGRAM CONT D...

Page 84: ...ZE 35 5 18 5 76 6 1 3 85 5 23 2 68 3 All Dimensions are in inches unless otherwise specified NOTE Placement on a level surface free of obstructions including snow for winter operation or air circulati...

Page 85: ...2 95 9 YLUA0108YE 35 5 7 6 69 8 47 4 1 4 85 5 23 2 95 9 YLUA0130ZE 35 5 7 6 69 8 47 4 1 4 85 5 23 2 95 9 All Dimensions are in inches unless otherwise specified NOTE Placement on a level surface of fr...

Page 86: ...are in inches unless otherwise specified NOTE Placement on a level surface free of obstructions including snow for winter operation or air circulation ensures rated performance reliable operation and...

Page 87: ...0 73 NM1 ISSUE DATE 09 04 2020 5 5 CLEARANCES NOTES 1 No obstructions allowed above the unit 2 Only one adjacent wall may be higher than the unit 3 Adjacent units should be 10 ft 3 m apart LD13243 Fig...

Page 88: ...in the control panel informa tion packet is a drawing and table specifically for each chiller based on the option selection The drawing and table will be similar to the two samples shown below and on...

Page 89: ...u 1020 348 thru 463 CP 1D 1360 WHITE 1021 thru 1156 464 thru 524 CP 1D 1785N GRAY RED 1157 thru 1785 525 thru 810 MODEL NUMBER COLOR CODE RATED CAPACITY FOR UNITS WITH ANY LOAD POINT ABOVE 1518 LB 689...

Page 90: ...ling all isolator bases to the same elevation 1 4 in maximum difference can be tolerated 4 Bolt or anchor all isolators to supporting structure utilizing base slotted holes c 5 Place equipment on top...

Page 91: ...Y2RSI 2D 3280N PINK GRAY DK BROWN 2619 to 3740 1189 to 1696 Two Inch Deflection Seismic Isolator Cross Reference Y2RS LD13761A 12 5 2 3 4 12 1 4 8 3 8 OPER HEIGHT 14 5 8 3 8 3 4 TYP 4 3 1 2 5 8 11UNC...

Page 92: ...These shims must be in place when the equipment is positioned over the isola tors 6 With all shims e in place position equipment on top of plate a of isolator Bolt equipment securely to top plate of...

Page 93: ...ee height less the static deflection under load All dimensions for reference only 6 Hardware zinc electroplated MOUNT TYPE DIMENSION DATA INCHES L W HF AL AD BT CD DW RD1 WR 3 13 1 75 1 25 2 38 0 34 0...

Page 94: ...loor housekeeping pad or sub base ensuring that all Isolator centerlines match the equipment mounting holes The vmc group Recommends that the isolator base a be in stalled on a level surface Shim or g...

Page 95: ...it connect a YORK hand oil pump Part No 470 10654 000 to the 1 4 in oil charging valve on the compressor with a length of clean hose or copper line but do not tighten the flare nut Using clean oil of...

Page 96: ...tion devices can now be set to ON Verify the control panel display is illuminated En sure that the system switches under the SYSTEM SWITCHES Key are in the OFF position Compressor Heaters Verify the c...

Page 97: ...to start up 3 Each heater should draw approximately 0 5 1A C PANEL CHECKS Power On Both Unit Switch Off 1 Apply 3 phase power and verify its value Voltage imbalance should be no more than 2 of the ave...

Page 98: ...ilure 6 Turn system 1 off and system 2 on refer to YLUA Installation Operation Maintenance Manual Form 150 73 NM1 Unit Keys Option 2 for more information on system switches Place the Unit Switch in th...

Page 99: ...with only a single compressor running on a circuit The superheat is calculated as the difference between the actual temperature of the returned refrigerant gas in the suction line entering the compre...

Page 100: ...JOHNSON CONTROLS 100 FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 101: ...anel System inputs such as pressure transducers and temperature sensors are connected directly to the Microprocessor Board The Microprocessor Board circuitry multiplexes the ana log inputs digitizes t...

Page 102: ...temperatures compressor running times and starts option information on the chiller and system setpoints This data is useful for monitoring chiller op eration diagnosing potential problems troubleshoot...

Page 103: ...ssage in dicates that the daily holiday schedule programmed is keeping the unit from running F L O W S W I T C H R E M S T O P N O R U N P E R M NO RUN PERM shows that either the flow switch is open o...

Page 104: ...T L I M I T I N G When this message appears suction pressure limiting is in effect The suction pressure limit is a control point that limits the loading of a system when the suction pressure drops to...

Page 105: ...value During the next 3 minutes the cutout point is ramped up to the programmed cutout point If at any time during these 3 minutes the suction pressure falls below the ramped cutout point the system...

Page 106: ...e malfunction of the mi croprocessor could result in system damage When the 115 VAC to the micro panel drops below a certain level a unit fault is initiated to safely shut down the unit Restart is all...

Page 107: ...olled Shutdown Daily Schedule Shutdown Air Flow Switch Rem Stop No Run Premissive System X Switch Off System X Comps Run System X AR Timer System X AC Timer System X Disch Limiting System X Suction Li...

Page 108: ...under the ENTRY section System 2 information will only be dis played for 2 system units With the UNIT TYPE set as a condensing unit via jumper between J11 7 and J11 12 on the I O Board the following...

Page 109: ...logged before the counter rolls over to 0 L O A D T I M E R 5 8 S E C U N L O A D T I M E R 0 S E C This display of the load and unload timers indicate the time in seconds until the unit can load or u...

Page 110: ...T A G E 3 S Y S X A M P S 3 6 0 V O L T S 0 8 The preceding five messages will appear sequentially first for system 1 then for system 2 The first message indicates the system and the associ ated compr...

Page 111: ...perating Data Printout Pressing the PRINT key and then OPER DATA key allows the operator to obtain a printout of current sys tem operating parameters When the OPER DATA key is pressed a snapshot will...

Page 112: ...f a fault lock out When the HISTORY key is pressed a printout is trans mitted of all system operating conditions which were stored at the instant the fault occurred for each of the 6 Safety Shutdowns...

Page 113: ...rough the displays in the order they appear below U N I T F A U L T L O W S U C T P R E S S Displays the type of fault that occurred U N I T T Y P E C O N D E N S I N G U N I T Displays the type of un...

Page 114: ...O I N T X X X X F R A N G E X X X F Displays the programmed Setpoint and Range if the unit is programmed for Discharge Air Control S Y S 1 SP X X X X P S I G R A N G E X X X P S I G S Y S 2 SP X X X X...

Page 115: ...r CURRENT FEEDBACK ONE PER SYSTEM must be programmed under the options key If the micro is programmed as one CUR RENT FEEDBACK ONE PER UNIT under the pro gram key the display will be the first display...

Page 116: ...nd DOWN arrow keys The UP arrow key and DOWN arrow key are also used for programming the control panel such as changing numerical or text values when programming cooling setpoints setting the daily sc...

Page 117: ...ow programming of appropri ate setpoints This is accomplished by the jumper between J11 7 and J11 12 on the I O Board Following are the four possible messages that can be displayed after pressing the...

Page 118: ...R A N G E 5 P S I G Suction Pressure control The setpoint and range are programmed with the UP arrow DOWN arrow and ENTER ADV key as de scribed in the previous setpoint message The setpoints in Sucti...

Page 119: ...AY key The start and stop time of each day may be programmed differently using the UP and DOWN arrow and ENTER ADV keys After SUN Sunday schedule appears on the display a subsequent press of the SCHED...

Page 120: ...he programmable anti recycle timer starts the timer when the first compressor in a system starts The timer begins to count down If all the compressors in the circuit cycle off a compressor within the...

Page 121: ...using the following for mulas 460VAC System Trip Volts For individual system high current trip programming on 460 VAC units Add the sum of the compressor and fan RLA s in the system Multiply the sum b...

Page 122: ...39 6 barg 39 3 barg Suction Pressure Cutout 80 0 psig 120 0 psig 80 0 psig 5 52 barg 8 27 barg 5 52 barg Low Ambient Temp Cutout Standard Ambient 25 0 F 60 0 F 25 0 F 3 9 C 15 6 C 3 9 C Low Ambient 0...

Page 123: ...Local Remote Discharge Mon Sun Discharge Air or Suction Pressure and Pressure Control Mode Schedule Cutout Display Only Suction Setpoint Holiday Pressure and Schedule Cutout Range Remote Setpoint Low...

Page 124: ...ammed Option 2 System Switches two system units only Single System Display is similar S Y S 1 S W I T C H O N S Y S 2 S W I T C H O N This allows both systems to run or S Y S 1 S W I T C H O N S Y S 2...

Page 125: ...s mode displays system operating values in Impe rial units of F or psig or D I S P L A Y U N I T S S I This mode displays system operating values in Scien tific International Units of C or barg Option...

Page 126: ...t is to J7 4 to J7 12 of the micro or C U R R E N T F E E D B A C K O N E P E R S Y S T E M This mode should be selected when an optional mod ule is installed to allow individual current monitoring of...

Page 127: ...he unit switch and set the FLASH CARD UPDATE TO ENABLED using the and keys F L A S H C A R D U P D A T E E N A B L E D Press the ENTER key and the following message will be displayed until the update...

Page 128: ...s important that the date and time be correct other wise the daily schedule will not function as desired if programmed In addition for ease of troubleshooting via the History printouts the day time an...

Page 129: ...rvice Mode Viewable Only Must be Programmed for Thermostatic Ambient Control Standard or Low Local Remote Mode Unit Control Mode DAT or Suct Press Display Units English or Metric System Lead Lag Contr...

Page 130: ...JOHNSON CONTROLS 130 FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 131: ...if the optional suction pressure transducers are installed DISCHARGE PRESSURE LIMIT CONTROLS The discharge pressure limit controls unload a sys tem before it reaches a safety limit due to high load o...

Page 132: ...Step 3 is skipped when loading occurs 3 Step 4 is skipped when unloading occurs STEP can be viewed using the OPER DATA key and scrolling to COOLING DEMAND 4 Each system will attempt to rotate the lead...

Page 133: ...ction pressure falls below the Setpoint High Limit and greater than the Setpoint Low Limit load ing and unloading do not occur This area of control is called the control range If the suction pressure...

Page 134: ...e timer begins to count down If all of the compres sors in a circuit cycle off a compressor within the cir cuit will not be permitted to start until the anti recycle timer has timed out If the lead sy...

Page 135: ...Press 40 psig 2 76 Bars OAT 60 F 15 6 C AND DP Fan Ctrl On Press Diff Press 40 psig 2 76 Bars 7M and 8M 10M and 11M TB7 8 and TB7 9 TB10 8 and TB10 9 1 and 3 2 and 4 Table 26 YLUA0078 YLUA0095 CONDEN...

Page 136: ...N REV DP Fan Ctrl On Press DP Fan Ctrl On Press Diff Press 7M 10M TB7 8 TB10 8 1 REV 2 REV 2 1 FAN FWD DP Fan Ctrl On Press 20 psig 1 38 Bars DP Fan Ctrl On Press Diff Press 20 psig 1 38 Bars 8M 11M T...

Page 137: ...standard Figure 26 YLUA0098 YLUA0130 FAN LOCATION Table 28 YLUA0098 YLUA0130 CONDENSER FAN CONTROL FAN STAGE ON OFF CONTACTOR I O BOARD OUTPUT FAN SYS 1 SYS 2 SYS 1 SYS 2 SYS 1 SYS 2 1 1 FAN FWD DP F...

Page 138: ...7 6 and 8 3 3 FANS FWD DP Fan Ctrl On Press 40 psig 2 76 Bars DP Fan Ctrl On Press Diff Press 40 psig 2 76 Bars 7M 8M and 10M 11M 12M and 14M 2 and 5 6 and 9 1 3 and 7 2 4 and 8 4 4 FANS FWD DP Fan C...

Page 139: ...st stage of limiting is either 80 66 or 50 depending on the number of compressors on the unit The second stage of limiting is either 40 or 33 and is only available on 3 5 and 6 compressor units Table...

Page 140: ...Max Reset Value 20 F 11 11 C Input Signal 6 VDC English Reset 6 VDC x 20 F 12 F Reset 10 New Setpoint 45 F 12 F 57 F Metric Reset 6 VDC x 11 11 C 6 67 C Reset 10 New Setpoint 7 22 C 6 67 C 13 89 C Ma...

Page 141: ...l during trouble shooting SECTION 9 SERVICE AND TROUBLESHOOTING CLEARING HISTORY BUFFERS The history buffers may be cleared by pressing the HISTORY key and then repeatedly pressing the UP arrow key un...

Page 142: ...ow keys but under normal circumstances would not be required or advised After the last start display the micro will display the first programmable value under the PROGRAM key SERVICE MODE ANALOG AND D...

Page 143: ...r High Pressure Cutout Table 32 I O DIGITAL OUTPUTS TB7 2 SYS 1 Compressor 1 TB7 3 SYS 1 Liquid Line Solenoid Valve TB7 4 SYS 1 Compressor 2 TB7 5 SYS 1 Compressor 3 TB7 7 SYS 1 Hot Gas Bypass Valve T...

Page 144: ...LS 144 FORM 150 73 NM1 ISSUE DATE 09 04 2020 SECTION 9 SERVICE AND TROUBLESHOOTING Figure 28 MICROBOARD LAYOUT TB5 TB1 TB6 TB7 TB8 TB9 TB10 J14 J13 J12 J15 J11 J10 J9 J8 J7 J6 J5 J3 I O BOARD IPU BOAR...

Page 145: ...ar digital input Typically voltages of 24 VDC to 36 VDC could be measured for the DC voltage on the digital inputs This voltage is in reference to ground The unit case should be sufficient as a refere...

Page 146: ...d on all YLUA s The suction pressure transducers have a range of 0 psig to 400 psig The output will be linear from 0 5 VDC to 4 5 VDC over the 400 psig 27 5 barg range The discharge transducers have a...

Page 147: ...0 VDC System 2 Discharge Transducer J9 6 5 VDC regulated supply to transducer J9 11 VDC input signal to the microboard See the formula above for voltage readings that correspond to specific discharge...

Page 148: ...the respective output connection energizing contactors evaporator heater and solenoids according to the operating sequence see Figure 29 on page 148 120 VAC is supplied to the I O board via connectio...

Page 149: ...spe cifically for YORK is P N 950915576 The cable to connect the printer can either be locally assembled from the parts listed or ordered directly from WEIGH TRONIX under part number 287 040018 Parts...

Page 150: ...trols Service be fore replacing Circuit Boards FLOW SWITCH REM STOP NO RUN PERMISSIVE 1 No air flow 2 Air Proving Switch improperly installed 3 Defective Air Proving Switch 4 Remote cycling device ope...

Page 151: ...eat setting of 10 F 15 F 5 6 C 8 3 C Verify compressor is not over loaded 2 Determine cause and reset 3 See High Press Disch Fault 4 Replace HPCO Switch 5 Replace Relay COMPRESSOR S WON T START 1 Dema...

Page 152: ...JOHNSON CONTROLS 152 FORM 150 73 NM1 ISSUE DATE 09 04 2020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 153: ...his occurs an oil sample should be taken and analyzed If contaminants are present the system must be cleaned to prevent compressor failure Never use the scroll compressor to pump the refrigerant syste...

Page 154: ...0 on page 154 show the data values and page listings for this unit ISN PAGES listed are ENG PAGE REF ERENCES and must be decoded to the corresponding PAGE REF point map re lated to the communications...

Page 155: ...SYS 1 Operational Code P57 129 Coded SYS 1 Fault Code P58 130 Coded SYS 2 Operational Code P59 131 Coded SYS 2 Fault Code ISN PAGE CHARACTER TYPE DATA P60 132 Coded P61 133 Coded SYS 1 Condenser Fan...

Page 156: ...MISSIVE 8 HIGH MOTOR CURRENT 9 NO COOL LOAD 9 LLSV NOT ON 10 ANTI COINCIDENCE TIMER ACTIVE 10 LOW BATTERY WARNING 11 ANTI RECYCLE TIMER ACTIVE 11 HIGH OIL TEMPERATURE 12 MANUAL OVERRIDE 12 HIGH DISCHA...

Page 157: ...ng and start stop commands DE MODIFIER ADDRESS XXXXX DE MODIFIER OFFSET XX P1 PROTOCOL XXXXXX P1 MANUAL MAC ADDRESS XXX P1 BAUD RATE XXXXX P1 PARITY XXXXX P1 STOP BITS X P2 PROTOCOL XXXXXXXXXX P2 MANU...

Page 158: ...OTOCOL TERMINAL MODBUS CLIENT API TERMINAL MODBUS IO MODBUS SERVER API MODBUS CLIENT SELECTABLE P1 P2 STOP BITS 1 2 1 RESET REAL TIME ERROR NO YES NO The table below shows the real time error numbers...

Page 159: ...he Modbus Register Address for these points is 1537 BV Table 45 SERIAL COMMUNICATION BINARY VALUE DATA BV BACNET NAME BINARY VALUE DESCRIPTION 1 START_STOP Start Stop Command 2 SS_SYS1 SYS 1 Start Sto...

Page 160: ...E SYS 1 Debug Code 30 S1_FAN_STAGE SYS 1 Condenser Fan Stage 31 S2_DBG_CODE SYS 2 Debug Code 32 S2_FAN_STAGE SYS 2 Condenser Fan Stage 33 CONTROL_M0DE Unit Control Mode 1 Leaving Water 2 Return Water...

Page 161: ...SYS Comp 1 Run 6 S2_C1_RUN SYS 2 Comp 1 Run 7 S1_LLSV SYS 1 Liquid Line Solenoid Valve 8 S1_MODE_SV SYS 1 Mode Solenoid Valve HP Only 9 S1_HGBV SYS 1 Hot Gas Bypass Valve 10 S1_BHS Bivalent Heat Sour...

Page 162: ...17 6 111 2 128 132 136 53 3 55 6 57 8 46 48 50 114 8 118 4 122 140 144 148 60 0 62 2 64 4 52 54 56 125 6 129 2 132 8 152 156 160 66 7 68 9 71 1 58 60 62 136 4 140 143 6 164 168 172 73 3 75 6 77 8 64 6...

Page 163: ...134 74 17 600 149 76 19 700 159 Table 50 PRESSURE CONVERSION CHART GAUGE OR DIFFERENTIAL PSI BAR BAR PSI 20 30 40 1 38 2 07 2 76 1 5 2 2 5 21 8 29 36 3 50 60 70 3 45 4 14 4 83 3 3 5 4 43 5 50 8 58 80...

Page 164: ...nnsylvania USA 17349 1 800 524 1330 Subject to change without notice Printed in USA Copyright by Johnson Controls 2020 www johnsoncontrols com ALL RIGHTS RESERVED Form 150 73 NM1 920 Issue Date Septem...

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