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York YCUL0045E, Installation Operation & Maintenance

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York YCUL0045E Installation Operation & Maintenance Download Page 25

JOHNSON CONTROLS

25

FORM 150.63-NM8 (1020)

1

It is possible that multiple sources of power can be supplying the unit power panel. To pre

-

vent serious injury or death, the technician should verify that NO LETHAL VOLTAGES are 

present inside the panel AFTER disconnecting power, PRIOR to working on equipment.

CONTROL WIRING

FIG. 6

  –  

CTB1 FIELD CONTROL WIRING (CTB1 LOCATED BELOW MICROPROCESSOR BOARD)

LD04288

LD04376

*YCUL0125 - YCUL0275

CTB1 – SUCTION PRESSURE CONTROL

13

20

13

16

14

13

AIR PROVING SWITCH

PWM INPUT

SYS 1 ZONE T'STAT

LOAD LIMIT INPUT

21

* SYS 2 ZONE T'STAT

CTB1 – DISCHARGE AIR TEMPERATURE CONTROL

21

13

20

13

14

13

AIR PROVING SWITCH

REMOTE START/STOP

                CONTACTS

PWM INPUT

LOAD LIMIT INPUT

Summary of Contents for YCUL0045E

Page 1: ...380 415 5 MODELS ONLY INSTALLATION OPERATION MAINTENANCE AIR COOLED CONDENSING UNITS HERMETIC SCROLL Supersedes 150 63 NM8 209 Form 150 63 NM8 1020 035 22319 000 YCUL0045E_ YCUL0275E_ R22 HFC 407C ST...

Page 2: ...dual will also be familiar with and comply with all applicable governmental standards and regula tions pertaining to the task in question SAFETY SYMBOLS The following symbols are used in this document...

Page 3: ...ng any work on the chiller REVISION NOTES Revisions made to this document are indicated in the following table These revisions are to technical information and any other changes in spelling grammar or...

Page 4: ...S 36 WEIGHT DISTRIBUTION 46 ISOLATOR SELECTIONS 48 PRE STARTUP CHECKLIST 53 INITIAL START UP 54 SECTION 2 UNIT CONTROLS 56 STATUS KEY 58 DISPLAY PRINT KEYS 64 ENTRY KEYS 72 SETPOINTS KEYS 73 UNIT KEYS...

Page 5: ...18 UNIT KEYS PROGRAMMING QUICK REFERENCE LIST 84 TABLE 19 DISCHARGE AIR TEMPERATURE CONTROL FOR 5 AND 6 COMPRESSORS 7 AND 8 STEPS 86 TABLE 20 DISCHARGE AIR TEMPERATURE CONTROL FOR 4 COMPRESORS 6 STEPS...

Page 6: ...20 TABLE 31 SUCTION TEMP SENSOR TEMPERATURE VOLTAGE RESISTANCE CORRELATION 102 TABLE 32 TROUBLESHOOTING 106 TABLE 33 ISN RECEIVED DATA 110 TABLE 34 ISN TRANSMITTED DATA 110 TABLE 35 ISN OPERATIONAL AN...

Page 7: ...AL CONNECTIONS 105 FIG 18 ELEMENTARY DIAGRAM CONTROL CIRCUIT YCUL0045E_ YCUL0095E_ 114 FIG 19 ELEMENTARY DIAGRAM POWER CIRCUIT YCUL0045E_ YCUL0095E_ 116 FIG 20 ELEMENTARY DIAGRAM MIDDLE MARKET YCUL004...

Page 8: ...JOHNSON CONTROLS 8 FORM 150 63 NM8 1020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 9: ...ons Odd Number 50 HZ Nominal kW 200 3 60 230 3 60 380 3 60 460 3 60 380 415 3 50 575 3 60 Across the Line YCUL0025EC 50XCA YORK Chiller Air Cooled Condensing Unit Scroll 1 2 3 4 5 6 7 8 9 10 11 12 13...

Page 10: ...ed on the first 14 characters only ASME Pressure Vessel Code 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 X X X X C 1 X B 2 P 3 X X 4 A 5 6 X 7 X 8 B L 1 S N 16 17 18 19 20 21 22 23 24 25 26 27...

Page 11: ...VALVE LIQUID LINE SERVICE VALVE LIQUID LINE SOLENOID VALVE TXV SUCTION LINE BALL VALVE SIGHT GLASS MOISTURE INDICATOR SOLENOID OPERATED HOT GAS BYPASS VALVE YCUL REFRIGERANT FLOW DIAGRAM NOTE YCUL0046...

Page 12: ...r nally enhanced high condensing coefficient corrosion resistant copper tubes are arranged in staggered rows mechanically expanded into aluminum fins Integral subcooling is included The design working...

Page 13: ...TXV liquid line solenoid sight glass refrigerant discharge return air temperature sensor if used and refrigerant piping to the air handling unit Care should be taken to avoid damage due to rough handl...

Page 14: ...entire weight of the unit and service personnel Care must be taken not to damage the roof during installation If the roof is bonded consult the building contractor or architect for special installati...

Page 15: ...the supply air blower is not operating If separate evaporator blowers are used with respect to each refrigerant system in the condensing unit then two air proving switches must be wired in series acro...

Page 16: ...ROBLEMS OR LACK OF OIL RETURN Filter driers and sight glasses are shipped loose for field installation on each refrigerant circuit Field refrigerant piping can be connected to the condensing unit All...

Page 17: ...operating charge for the condensing unit evaporator coil and refrigerant piping must be weighed in after all refrigerant piping is installed leak checked and evacuated 70 of the calculated charge mus...

Page 18: ...DED COPPER TYPE L INCHES O D 3 PRES SURE DROP PSI 100 FT 0045 1 15 1 5 8 2 5 2400 7 5 3 4 4 5 5 2 1 8 0 6 1350 7 8 2 1 0061 1 20 1 5 8 4 3 3200 10 3 4 7 7 5 2 1 8 1 1 1800 7 8 3 5 0081 1 27 1 5 8 7 4...

Page 19: ...1 1 8 3 4 5 2 5 8 1 3 2340 1 3 8 1 3 0211 1 45 2 1 8 4 9 4050 15 1 1 8 4 4 5 2 5 8 1 7 2700 1 3 8 1 7 2 39 2 1 8 3 7 3510 13 1 1 8 3 4 5 2 5 8 1 3 2340 1 3 8 1 4 0235 1 45 2 1 8 4 9 4050 15 1 1 8 4 4...

Page 20: ...32 4 3360 35 3 4 58 0 5 2 1 8 8 3 1890 7 8 26 2 0145 1 95 1 5 8 51 0 4320 46 7 8 42 1 2 1 8 13 1 2430 1 1 8 11 7 2 74 1 5 8 32 4 3360 35 3 4 58 0 5 2 1 8 8 3 1890 7 8 26 2 0161 1 105 2 1 8 15 6 2700 5...

Page 21: ...2 671 1 3 8 14 5 2 144 1 2 1 8 28 3 1125 1 1 8 25 5 2 5 8 9 7 750 1 3 8 9 7 0211 1 172 2 2 5 8 13 8 896 87 9 1 1 8 35 9 3 1 8 6 2 657 1 3 8 13 8 2 172 2 2 5 8 13 8 896 1 1 8 35 9 3 1 8 6 2 657 1 3 8...

Page 22: ...C subcooled liquid Vapor in the liquid line even in small amounts will measurably reduce valve capacity and poor system performance will result In addition pressure loss for strainers filter driers so...

Page 23: ...Power Panel Control Panel Terminal Block NF Disconnect SW or Circuit Breaker 1L1 1L2 1L3 1L1 1L2 1L3 GRD GRD GRD MICROPANEL 2 L CTB2 2 L CTB2 13 14 13 14 CTB1 Field Provided Unit Power Supply Field Pr...

Page 24: ...ANEL 2 L CTB2 2 L CTB2 13 14 13 14 CTB1 Field Provided Unit Power Supply Field Provided 120 1 60 Micropanel Power Supply if Control Transformer not Supplied Air Proving Switch See electrical note 9 Ci...

Page 25: ...el AFTER disconnecting power PRIOR to working on equipment CONTROL WIRING FIG 6 CTB1 FIELD CONTROL WIRING CTB1 LOCATED BELOW MICROPROCESSOR BOARD LD04288 LD04376 YCUL0125 YCUL0275 CTB1 SUCTION PRESSUR...

Page 26: ...ous injury or death the technician should verify that NO LETHAL VOLTAGES are present inside the panel AFTER disconnecting power PRIOR to working on equipment FIG 8 CTB3 POWER PANEL FIELD WIRING LD0866...

Page 27: ...ED 5 VDC DRAIN GND FIG 10 OPTIONAL SUCTION TEMPERATURE SENSOR FIELD WIRING LD14008 YCUL0045 YCUL0275 RED 5VDC BLK INPUT DRAIN GND REFER TO ASSEMBLY INSTRUCTIONS IN FACTORY SUPPLIED KIT CABLE SENSORS A...

Page 28: ...19 9 167 19 9 167 2 4 0 0095 380 415 50 62 100 70 80 70 80 10 1 23 9 198 23 9 198 2 4 0 0121 380 415 50 73 100 80 90 80 90 10 1 19 9 167 19 9 167 19 9 167 2 4 0 0125 380 415 50 46 60 50 60 50 60 10 1...

Page 29: ...ANGE6 COMPR 1 COMPR 2 COMPR 3 FANS MIN3 MAX4 MIN MAX RLA LRA RLA LRA RLA LRA QTY FLA EA 46 60 50 60 50 60 10 1 16 6 127 16 6 127 2 4 0 46 60 50 60 50 60 10 1 16 6 127 16 6 127 2 4 0 53 60 60 70 60 70...

Page 30: ...BREAKER 0045 380 415 50 35 60 40 45 40 45 10 1 14 2 14 2 0061 380 415 50 46 60 50 60 50 60 10 1 14 2 14 2 0081 380 415 50 53 60 60 70 60 70 10 1 14 2 14 2 0095 380 415 50 62 100 70 70 70 70 10 1 14 1...

Page 31: ...19 9 167 19 9 167 2 4 0 16 6 127 16 6 127 2 4 0 16 6 127 16 6 127 2 4 0 19 9 167 19 9 167 2 4 0 16 6 127 16 6 127 2 4 0 19 9 167 19 9 167 2 4 0 19 9 167 19 9 167 2 4 0 23 9 198 23 9 198 2 4 0 19 9 16...

Page 32: ...use size is based upon 225 of the rated load amps for the largest motor plus 100 of the rated load amps for all other loads included in the circuit per N E C Article 440 22 5 Circuit breakers must be...

Page 33: ...ent Fuse or Circuit Breaker LEGEND Factory Supplied Supplied by Others VOLTAGE LIMITATIONS The following voltage limitations are absolute and operation beyond these limitations may cause serious damag...

Page 34: ...8 15 8 Pumpdown Capacity R 22 ckt1 ckt2 lbs 19 6 19 6 27 4 41 1 41 1 26 5 26 5 26 5 26 5 R 407C ckt1 ckt2 lbs 18 8944 18 8944 26 4136 39 6204 39 6204 25 5 25 5 25 5 25 5 Oil Charge ckt1 ckt2 liters 6...

Page 35: ...34 6 26 5 26 5 26 5 26 5 39 7 39 7 30 9 30 9 46 4 46 4 46 4 46 4 46 4 46 4 25 5 25 5 25 5 25 5 38 2 38 2 29 8 29 8 44 7 44 7 44 7 44 7 44 7 44 7 8 8 13 8 13 13 12 11 4 12 12 20 12 20 20 1840 1866 1894...

Page 36: ...patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential performance...

Page 37: ...ter of Gravity mm X Y Z 0045 1 125 644 788 0061 1 125 644 788 HOLES TYP MOUNTING 19 DIA TOP VIEW 2 76 X 76 RIGGING HOLES EACH SIDE POWER PANEL CONTROL PANEL ORIGIN Y C G X G C Z X 2670 737 616 229 235...

Page 38: ...e airflow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential pe...

Page 39: ...IN Y C G X A A G C Z X 2670 2043 373 737 654 229 940 1308 38 38 2229 82 A 2 1 8 O D SUCT CONN 280 LIQUID STOP VALVE 7 8 O D LIQUID CONN C 262 1866 D A B 235 ALUMINUM COIL COPPER COIL MODEL YCUL A 0081...

Page 40: ...will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is...

Page 41: ...YCUL Center of Gravity mm X Y Z 0121 1 106 682 938 HOLES TYP MOUNTING 19 DIA TOP VIEW 2 76 X 76 RIGGING HOLES EACH SIDE POWER PANEL CONTROL PANEL ORIGIN Y C G X A A G C Z X 2670 2043 373 737 654 229...

Page 42: ...possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential performance degradation A...

Page 43: ...1 LIQ STOP VALVE LIQ CONN 249 690 B SYS 2 LIQ STOP VALVE D 248 Y C 2527 A B C G X 387 ALUMINUM COIL COPPER COIL MODEL YCUL A B 0125 176 183 0145 176 183 0161 176 183 0171 170 183 0185 176 149 YCUL Ce...

Page 44: ...rols will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential performance degradation Access to the unit control center assumes the uni...

Page 45: ...ACH SIDE CONTROL PANEL TOP VIEW POWER PANEL ORIGIN 2311 521 1270 2473 737 859 38 38 C G Z X 53 229 A SYS 1 B SYS 2 LIQ CONNS SUCT CONNS SYS 1 2 SYS 1 2 616 1791 3022 C SYS 1 D SYS 2 SYS 1 2 LIQ STOP V...

Page 46: ...D E F G H Total 0045 262 213 251 204 930 0061 263 213 253 205 934 0081 316 242 300 230 1088 0095 307 266 288 249 1109 0121 364 314 315 272 1265 0125 448 446 449 448 1791 0145 456 456 452 451 1814 0161...

Page 47: ...8 220 1001 0081 333 243 336 245 1157 0095 324 266 322 265 1177 0121 380 314 349 289 1333 0125 478 483 480 485 1927 0145 487 493 482 488 1950 0161 490 497 491 498 1976 0171 498 506 495 503 2002 0185 50...

Page 48: ...000 1000 0171 1000 1000 1000 1000 0185 1000 1000 1000 1000 0211 1300 1000 1300 1000 0235 1300 1000 1300 1000 0255 1600 1300 1600 1300 0275 1600 1300 1600 1300 1 Isolator Selections VMC Type CP x xx YC...

Page 49: ...00 1000 0185 1000 1000 1000 1000 0211 1300 1300 1300 1300 0235 1300 1300 1300 1300 0255 1300 1300 1300 1300 0275 1600 1600 1600 1600 1 Isolator Selections VMC Type CP x xx YCUL A B C D E F G H 0045 1...

Page 50: ...510 510 1 02 BLACK CP1 1D 675 675 1 32 DK PURPLE CP1 1D 900 900 1 02 DK GREEN CP1 1D 1200 1200 0 9 GRAY CP1 1D 1360 1360 0 77 WHITE CP1 1D 1785N 1785 0 88 GRAY RED MODEL NUMBER RATED CAPACITY LBS RAT...

Page 51: ...al WR 550 0 5 70 MODEL NUMBER RATED CAPAC ITY LBS RATED DEFLEC TION IN DURO 5 RD3 Brown WR 250 0 5 40 RD3 Brick Red WR 525 0 5 50 RD3 Lime WR 750 0 5 60 RD3 Charcoal WR 1100 0 5 70 MODEL NUMBER RATED...

Page 52: ...HORIZONTAL Y2RSI 2D 150 150 2 42 62 234 WHITE 34 7 Y2RSI 2D 320 320 2 29 140 490 YELLOW 16 3 Y2RSI 2D 460 460 2 30 200 688 GREEN 11 3 Y2RSI 2D 710 710 2 15 330 1072 DK BROWN 7 3 Y2RSI 2D 870 870 1 89...

Page 53: ...codes See Figures 3 4 pages 23 24 9 Check tightness of power wiring inside the power panel on both sides of the motor contactors and overloads 10 Check for proper size fuses in main and control circu...

Page 54: ...ying proper compressor rotation turn the Unit Switch to OFF The Discharged Air or Suction Pres sure setpoint may need to be temporar ily lowered to ensure all compressors cycle on 7 After verifying co...

Page 55: ...nly the adjusting screw should be turned not more than one turn at a time allowing suf ficient time approximately 15 minutes between adjustments for the system and the thermal expansion valve to respo...

Page 56: ...nt A Master ON Off switch is available to activate or de activate the unit INTRODUCTION IPU2 I O BOARDS The IPU2 Board is the controller and decision maker in the control panel System inputs such as p...

Page 57: ...or less than These characters indicate the actual values are greater than or less than the limit values which are being displayed KEYPAD The 12 button non tactile keypad allows the user to re trieve...

Page 58: ...lowed to run until the switch is turned back on This message informs the operator that the chilled liq uid temperature is below the point determined by the setpoint and control range that the micro wi...

Page 59: ...appears suction pressure limiting is in effect Suction Pressure Limiting is only available on units that have the suction pressure transducer installed If a low pressure switch is installed instead s...

Page 60: ...this function to operate The Suction Pressure Cutout is a software cutout that helps protect the chiller from a coil freeze up should the system attempt to run with a low refrigerant charge or a restr...

Page 61: ...d closes at 330 PSIG 25 PSIG 22 75 barg 1 72 barg The compressor is also equipped with a discharge temperature sensor for the purpose of sensing internal scroll temperature This sensor protects the sc...

Page 62: ...faulty battery is detected the unit will be prevented from running until the PROGRAM key is pressed Once PROGRAM is pressed the anti recycle timers will be set to the programmed anti recycle time to a...

Page 63: ...System X Suction Limiting System X Percentage Load Limiting Manual Overide Status System X Pumping Down on shutdown Unit Safeties System Safeties Low Ambient Temp System X High Disch Pressure System X...

Page 64: ...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 DISPLAY PRINT KEYS the following list of operating data screens a...

Page 65: ...actual number of sys tems and compressors on the unit This display of the load and unload timers indicate the time in seconds until the unit can load or unload Whether the systems loads or unloads is...

Page 66: ...SYS 1 displays Total chiller current is displayed as shown below If the micro is programmed for CURRENTFEEDBACK NONE no current display will appear The preceding five messages will appear sequentially...

Page 67: ...Air Temperature Ambient Air Temperature System 1 Suction and Discharge Pressure System 1 Suction Temperature System 2 Suction and Discharge Pressure System 2 Suction Temperature System X Accumulated R...

Page 68: ...E AIR LEAD LAG CONTROL AUTOMATIC FAN CONTROL DISCHARGE PRESS CURRENT FEEDBACK NONE COMPRESSOR LEAD LAG DISABLED SOFT START DISABLED PROGRAM VALUES DSCH PRESS CUTOUT 395 PSIG SUCT PRESS CUTOUT 44 PSIG...

Page 69: ...rred for each of the 6 Safety Shutdowns buffers The printout will begin with the most recent fault which occurred The most recent fault will always be stored as Safety Shutdown No 1 Identically format...

Page 70: ...ient Displays Local or Remote control selection Displays the type of chilled liquid control Leaving or Return Displays the type of lead lag control Manual System 1 Manual System 2 or Automatic This is...

Page 71: ...System Liquid Line Solenoid or Hot Gas Solenoid was energized at the time of the fault Displays the number of fan stages in the system active at the time of the fault Displays the system amperage calc...

Page 72: ...Y KEYS The UP and DOWN arrow keys are also used for pro gramming the control panel such as changing numerical or text values when programming cooling setpoints setting the daily schedule changing safe...

Page 73: ...layed Following are the four possible messages that can be displayed after pressing the COOLING SETPOINT key indicating the cooling mode This message indicates that the cooling setpoint is under LOCAL...

Page 74: ...Suction Pressure control the following message would be displayed instead of the previous message Suction Pressure control The setpoint and range are programmed with the UP arrow DOWN arrow and ENTER...

Page 75: ...operation is then repeated if necessary This process may be followed until the hour minutes and meridian AM or PM of both the START and STOPpoints are set After changing the meridian of the stop time...

Page 76: ...some exceptions when the suction pressure is permitted to tem porarily drop below the cutout point Details are explained under the topic of System Safeties The LOWAMBIENT TEMP CUTOUT allows the user t...

Page 77: ...is assures discharge pressure does not drop too low The TOTAL NUMBER OF COMPRESSORS are the amount of compressors in the chiller and determines the stages of cooling available Notice in Table 11 that...

Page 78: ...5 BARG 27 2 BARG SUCTION PRESSURE CUTOUT WATER COOLING 44 0 PSIG 70 0 PSIG 44 0 PSIG 3 03 BARG 4 83 BARG 3 03 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...

Page 79: ...Cutout Display Only Suction Setpoint Holiday Pressure Schedule Cutout Range Remote Setpoint Low Ambient Temp Cutout Range Display Only EMS PWM Anti Recycle Remote Temp Timer Reset Setpoint Discharge...

Page 80: ...e that particular option After the option is changed the ENTER ADV key must be pressed to enter the data into memory Table 18 shows the programmable options Following are the displays in the order the...

Page 81: ...T I O N P R E S S U R E Unit control is based on Suction Pressure Control or C O N T R O L M O D E D I S C H A R G E A I R Unit control is based on Discharge Air Temp Control OPTION 6 DISPLAY UNITS Th...

Page 82: ...ion allows overriding of the daily schedule that is programmed MANUAL OVERRIDE MODE DIS ABLED indicates that override mode has no effect or Manual Override Mode is enabled This is a service function a...

Page 83: ...year are displayed Pressing the ENTER ADV Key will save the valve and move the cursor on to the next programmable variable OPTION 12 UNIT TYPE The UNIT TYPE message cannot be modified under the unit...

Page 84: ...staic or Electronic Variable only Programmed under Service Mode Must be programmed for Thermostatic Viewable Only Condensing Unit MUST be Selected Via Installed Jumper Viewable Only Unit Type Unit Typ...

Page 85: ...PERATURE CONTROL The setpoint in Discharge Air Temperature Control is the temperature the condensing unit will control to within the control range The setpoint High Limit is the Setpoint plus the Cool...

Page 86: ...ipped 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 LEAD SYSTEM LAG SYSTEM STEP COMP 1 COMP 2 COMP 3 COMP 1 C...

Page 87: ...lenoid is turned off when the DAT SP CR 2 2 Step 3 is skipped when loading occurs 3 Step 4 is skipped when unloading occurs TABLE 21 DISCHARGE AIR TEMPERATURE CONTROL FOR 3 COMPRESSORS SINGLE SYSTEM T...

Page 88: ...ure falls below the Setpoint High Limit and greater than the Setpoint Low Limit loading and unloading do not occur This area of control is called the control range If the suction pressure falls below...

Page 89: ...to count down If all of the compressors in a circuit cycle off a compressor within the circuit will not be permitted to start until the anti recycle timer has timed out If the lead system has run for...

Page 90: ...ure only See Table 23 The condenser fan control by Discharge Pressure is a feature that can be selected if the discharge pressure transducer is installed and fan recycling is not a concern Fan control...

Page 91: ...2 1 1 FAN FWD OAT 25 F 3 9 C OR DP Fan Ctrl On Press OAT 20 F 6 7 C AND DP Fan Ctrl On Press Diff Press 8M 11M TB7 9 TB10 9 3 4 3 2 FANS FWD OAT 65 F 18 3 C OR DP Fan Ctrl On Press 40 PSIG 2 76 Bars...

Page 92: ...ly 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 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 F...

Page 93: ...f limiting is either 80 66 or 50 depending on the number of compressors on the unit The second stage of limit ing is either 40 or 33 and is only available on 3 5 6 compressor units Table 25 shows the...

Page 94: ...6 C So the new reset Cooling Setpoint 12 8 C 2 8 C 15 6 C This can be viewed by pressing the Cooling Setpoints key twice The new value will be displayed as REM SETP 15 6 C The temperature reset is onl...

Page 95: ...the Contact Closure input is used the connec tions are made to terminals C and D and only jumper JUI must be in place on the reset board This input is used when a single reset value is needed When the...

Page 96: ...t apply to condensing units SECTION 3 SERVICE AND TROUBLESHOOTING CLEARING HISTORY BUFFERS The history buffers may be cleared by pressing the HIS TORY key and then repeatedly pressing the UP arrow key...

Page 97: ...y All input and output connections pertain to the connections at the I O Board Figure 15 illustrates the physical connections on the I O Board SERVICE MODE INPUTS After entering Service Mode PROGRAM a...

Page 98: ...SYS 1 HOT GAS BYPASS VALVE TB10 2 SYS 2 COMPRESSOR 1 TB10 3 SYS 2 LIQUID LINE SOLENOID VALVE OR EEV PILOT SOLENOID TB10 4 SYS 2 COMPRESSOR 2 TB10 5 SYS 2 COMPRESSOR 3 TB7 8 SYS 1 CONDENSER FAN OUTPUT...

Page 99: ...JOHNSON CONTROLS 99 FORM 150 63 NM8 1020 3 FIG 15 I O BOARD LAYOUT TB5 TB1 TB6 TB7 TB8 TB9 TB10 J14 J13 J12 J15 J11 J10 J9 J8 J7 J6 J5 J3 I O BOARD IPU BOARD JP1 LD12721...

Page 100: ...ured for the DC voltage on the digital inputs This voltage is in refer ence to ground The unit case should be sufficient as a reference point when measuring digital input voltages ANALOG INPUTS Temper...

Page 101: ...11 14 2 22 16599 10 16 2 30 15629 9 18 2 37 14721 8 20 2 45 13872 7 22 2 52 13077 6 24 2 59 12333 4 26 2 67 11636 3 28 2 74 10982 2 30 2 81 10370 1 32 2 88 9795 0 34 2 95 9256 1 36 3 02 8750 2 38 3 0...

Page 102: ...15629 9 18 2 37 14721 8 20 2 45 13872 7 22 2 52 13077 6 24 2 59 12333 4 26 2 67 11636 3 28 2 74 10982 2 30 2 81 10370 1 32 2 88 9795 0 34 2 95 9256 1 36 3 02 8750 2 38 3 08 8276 3 40 3 15 7830 4 42 3...

Page 103: ...out on the display will be 0 PSIG when the LP switch is open and 200 PSIG 13 79 BARG when the LP switch is closed The discharge transducers have a range from 0 to 400 PSIG The output will be linear fr...

Page 104: ...put signal to the I O Board 0VDC open switch 5VDC closed switch J7 1 drain shield connection 0VDC System 2 Low Pressure Switch J9 5 5VDC regulated supply to LP switch J9 10 input signal to the I O Boa...

Page 105: ...port Blvd Santa Rosa CA 95402 Phone 1 800 982 6622 or 1 707 527 5555 International Orders Only The part number for the printer that is packaged specif i cally forYORK is P N 950915576 The cable to con...

Page 106: ...O IPU2 Board or Display board NOTE Contact Johnson Controls Service before Replacing circuit Boards FLOW SWITCH REM 1 No air flow 1 Check air flow STOP NO RUN PERMISSIVE 2 Air flow switch improperly i...

Page 107: ...FAULT or operating backwards and contactors Assure fan blows air upward 2 Too much refrigerant 2 Remove refrigerant 3 Air in refrigerant system 3 Evacuate and recharge system 4 Defective discharge 4 R...

Page 108: ...s Refer to Service section for Dis charge Air temp voltage table 3 Contactor Overload failure 3 Replace defective part 4 Compressor failure 4 Diagnose cause of failure and replace LACK OF COOLING EFFE...

Page 109: ...ressor failure Never use the scroll compressor to pump the refrigerant system down into a vacuum Doing so will cause internal arcing of the compressor motor which will result in failure of compressor...

Page 110: ...Analog SYS 1 Suction Superheat EEV Only P18 Analog SYS 1 Run Time seconds P19 Analog SYS 1 Suction Pressure P20 Analog SYS 1 Discharge Pressure P21 Analog SYS 1 Cooler Inlet Refrigerant Temp R 407c On...

Page 111: ...Fan Stage P62 Coded P63 Coded SYS 2 Condenser Fan Stage P64 Coded P65 Coded Unit Control Mode 0 Leaving Water 1 Return Water 2 Discharge Air 3 Suction Press 4 Cooling 5 Heating ISN TYPE DATA PG P66 A...

Page 112: ...CTIVE 10 LOW BATTERY WARNING 11 ANTI RECYCLE TIMER ACTIVE 11 HIGH OIL TEMPERATURE 12 MANUAL OVERRIDE 12 HIGH DISCHARGE TEMPERATE 13 SUCTION LIMITING 13 IMPROPER PHASE ROTATION 14 DISCHARGE LIMITING 14...

Page 113: ...JOHNSON CONTROLS 113 FORM 150 63 NM8 1020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 114: ...JOHNSON CONTROLS 114 FORM 150 63 NM8 1020 WIRING DIAGRAMS ELEMENTARY DIAGRAM YCUL0045E_ YCUL0095E_ FIG 18 ELEMENTARY DIAGRAM CONTROL CIRCUIT YCUL0045E_ YCUL0095E_ SECTION 4 WIRING DIAGRAMS...

Page 115: ...JOHNSON CONTROLS 115 FORM 150 63 NM8 1020 4...

Page 116: ...JOHNSON CONTROLS 116 FORM 150 63 NM8 1020 WIRING DIAGRAMS ELEMENTARY DIAGRAM YCUL0045E_ YCUL0095E_ FIG 19 ELEMENTARY DIAGRAM POWER CIRCUIT YCUL0045E_ YCUL0095E_...

Page 117: ...JOHNSON CONTROLS 117 FORM 150 63 NM8 1020 4 ELEMENTARY DIAGRAM YCUL0045E_ YCUL0095E_ FIG 20 ELEMENTARY DIAGRAM MIDDLE MARKET YCUL0045E_ YCUL0095E_...

Page 118: ...JOHNSON CONTROLS 118 FORM 150 63 NM8 1020 WIRING DIAGRAMS CONNECTION DIAGRAM YCUL0045E_ YCUL0095E_ FIG 21 CONNECTION DIAGRAM MIDDLE MARKET YCUL0045E_ YCUL0095E_...

Page 119: ...JOHNSON CONTROLS 119 FORM 150 63 NM8 1020 4...

Page 120: ...JOHNSON CONTROLS 120 FORM 150 63 NM8 1020 WIRING DIAGRAMS ELEMENTARY DIAGRAM YCUL0121E_ FIG 22 ELEMENTARY DIAGRAM CONTROL CIRCUIT YCUL0121E_...

Page 121: ...JOHNSON CONTROLS 121 FORM 150 63 NM8 1020 4...

Page 122: ...JOHNSON CONTROLS 122 FORM 150 63 NM8 1020 WIRING DIAGRAMS ELEMENTARY DIAGRAM YCUL0121E_ FIG 23 ELEMENTARY DIAGRAM POWER CIRCUIT YCUL0121E_...

Page 123: ...JOHNSON CONTROLS 123 FORM 150 63 NM8 1020 4 FIG 24 ELEMENTARY DIAGRAM MIDDLE MARKET YCUL0121E_ ELEMENTARY DIAGRAM YCUL0121E_...

Page 124: ...JOHNSON CONTROLS 124 FORM 150 63 NM8 1020 WIRING DIAGRAMS CONNECTION DIAGRAM YCUL0121E_ FIG 25 CONNECTION DIAGRAM MIDDLE MARKET YCUL0121E_...

Page 125: ...JOHNSON CONTROLS 125 FORM 150 63 NM8 1020 4...

Page 126: ...JOHNSON CONTROLS 126 FORM 150 63 NM8 1020 WIRING DIAGRAMS ELEMENTARY DIAGRAM YCUL00125E_ YCUL0185E_ FIG 26 ELEMENTARY DIAGRAM CONTROL CIRCUIT YCUL0125E_ YCUL0185E_...

Page 127: ...JOHNSON CONTROLS 127 FORM 150 63 NM8 1020 4...

Page 128: ...JOHNSON CONTROLS 128 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 27 ELEMENTARY DIAGRAM POWER CIRCUIT YCUL0125E_ YCUL0185E_ ELEMENTARY DIAGRAM YCUL00125E_ YCUL0185E_...

Page 129: ...JOHNSON CONTROLS 129 FORM 150 63 NM8 1020 4...

Page 130: ...JOHNSON CONTROLS 130 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 28 ELEMENTARY DIAGRAM MIDDLE MARKET YCUL0125E_ YCUL0185E_ ELEMENTARY DIAGRAM YCUL00125E_ YCUL0185E_...

Page 131: ...JOHNSON CONTROLS 131 FORM 150 63 NM8 1020 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 132: ...JOHNSON CONTROLS 132 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 29 CONNECTION DIAGRAM MIDDLE MARKET YCUL0125E_ YCUL0185E_ ELEMENTARY DIAGRAM YCUL00125E_ YCUL0185E_...

Page 133: ...JOHNSON CONTROLS 133 FORM 150 63 NM8 1020 4...

Page 134: ...JOHNSON CONTROLS 134 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 30 ELEMENTARY DIAGRAM CONTROL CIRCUIT YCUL0211E_ YCUL0275E_ ELEMENTARY DIAGRAM YCUL0211E_ YCUL0275E_...

Page 135: ...JOHNSON CONTROLS 135 FORM 150 63 NM8 1020 4...

Page 136: ...JOHNSON CONTROLS 136 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 31 ELEMENTARY DIAGRAM POWER CIRCUIT YCUL0211E_ YCUL0275E_ ELEMENTARY DIAGRAM YCUL0211E_ YCUL0275E_...

Page 137: ...JOHNSON CONTROLS 137 FORM 150 63 NM8 1020 4...

Page 138: ...JOHNSON CONTROLS 138 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 32 ELEMENTARY DIAGRAM MIDDLE MARKET YCUL0211E_ YCUL0275E_ ELEMENTARY DIAGRAM YCUL0211E_ YCUL0275E_...

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Page 140: ...JOHNSON CONTROLS 140 FORM 150 63 NM8 1020 WIRING DIAGRAMS FIG 33 CONNECTION DIAGRAM MIDDLE MARKET YCUL0211E_ YCUL0275E_ ELEMENTARY DIAGRAM YCUL0211E_ YCUL0275E_...

Page 141: ......

Page 142: ...NOTES...

Page 143: ...NOTES...

Page 144: ...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 63 NM8 1020 Issue Date Octob...

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