York YLUA0248 Series Installation Operation & Maintenance Download Page 132

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JOHNSON CONTROLS

132

FORM 150.73-NM2

ISSUE DATE: 09/07/2020

SECTION 8 – UNIT OPERATION

CONDENSER FAN CONTROL - YLUA0468 – YLUA0498

FIGURE 30 -

YLUA0468 – YLUA0498 FAN LOCATION

LD14099

TABLE 22 -

YLUA0468 – YLUA0498 CONDENSER FAN CONTROL

CONDENSER FAN CONTROL

(YLUA0468 – YLUA0498 UNITS)

Condenser fan control on models YLUA0468 –

YLUA0498 will always be by discharge pressure. The

on pressure and the differential off pressure are pro-

grammable under the PROGRAM key.

The following Figure and Table outlines fan sequenc-

ing for the various models. These models are equipped

to operate to 0°F ambient as a standard.

FAN #3

FAN #5

FAN #7

FAN #1

FAN #4

FAN #6

FAN #8

FAN #2

FAN STAGE

OFF

CONTACTOR

MICROBOARD

OUTPUT TB-4

FAN #

SYS 1 SYS 2 SYS 1 SYS 2 SYS 1 SYS 2

1 FAN FWD

DP > Fan Ctrl On Press

DP < Fan Ctrl On Press

– (Diff. Press.)

10M

14M

2 FANS FWD

DP > Fan Ctrl On Press

+ 20 PSIG (1.38 Bars)

DP < Fan Ctrl On Press. –

[(Diff Press.) + 20 PSIG (1.38 Bars)]

9M &

10M

13M &

14M

2 & 4

6 & 8

5 & 7

6 & 8

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, &

10M

11M,

12M &

14M

2 & 5

6 & 9

1, 3

& 7

2, 4

& 8

4 FANS FWD

DP > Fan Ctrl On Press

+ 60 PSIG (4.14 Bars)

DP < Fan Ctrl On Press.) –

[(Diff Press.) + 60 PSIG (4.14 Bars)]

7M,

8M,

9M,

10M

11M,

12M,

13M,

14M

2, 4

& 5

6, 8

& 9

1, 3,

5, 7

2, 4,

6, 8

Summary of Contents for YLUA0248 Series

Page 1: ...OLL CONDENSING UNITS STYLE A 50 Hz 70 ton to 135 ton 245 kW to 475 kW INSTALLATION OPERATION MAINTENANCE AIR COOLED SCROLL CONDENSING UNITS Supersedes 150 73 NM2 609 Form 150 73 NM2 920 R 410A 035 22868 100 Issue Date September 7 2020 ...

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 question SAFETY SYMBOLS The following symbols are used in this document to alert the reader to specific situations Indicates a possible hazardous situation which will result in death or serious injury i...

Page 3: ...age Claims 50 15 NM AFFECTED PAGES DESCRIPTION 3 Conditioned Based Maintenance program information added 18 Motor Current Module paragraph removed 79 Isolator locations updated in image and dimensions updated in table for YLUA0308 to YLUA0408 83 Isolator Locations section removed 91 93 Checklist updated to latest version REVISION NOTES Revisions made to this document are indicated in the following...

Page 4: ...JOHNSON CONTROLS 4 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 5: ...ccessories And Options 18 Unit Components 20 Product Identification Number Pin 23 Refrigerant Flow Diagram 28 Process And Instrumentation Diagram 29 SECTION 3 HANDLING AND STORAGE 31 Delivery And Storage 31 Inspection 31 Unit Rigging 31 SECTION 4 INSTALLATION 33 Installation Checklist 33 Handling 33 Location And Clearances 33 Spring Isolators Optional 34 Compressor Mounting 34 Pipework Arrangement...

Page 6: ...f 89 Preparation Power On 90 SECTION 7 UNIT CONTROLS 95 Introduction 95 Microprocessor Board 95 Unit Switch 96 Display 96 Keypad 96 Battery Back Up 96 Transformer 96 Single System Select And Programming Number Of Compressors 96 Status Key 97 Display Print Keys 102 Entry Keys 110 Setpoints Keys 111 Unit Keys 118 SECTION 8 UNIT OPERATION 125 Capacity Control 125 Suction Pressure Limit Controls 125 D...

Page 7: ...ce Mode 135 Service Mode Outputs 135 Service Mode Condensing Unit Configuration 136 Service Mode Analog And Digital Inputs 136 Control Inputs Outputs 137 Checking Inputs And Outputs 139 Optional Printer Installation 143 Troubleshooting 144 SECTION 10 MAINTENANCE 147 Important 147 Compressors 147 Condenser Fan Motors 147 Condenser Coils 147 Operating Parameters 147 On Board Battery Back Up 147 Over...

Page 8: ...E 14 Elementary Wiring Diagram 60 FIGURE 15 Elementary Wiring Diagram 62 FIGURE 16 Power Options Connection Diagram 64 FIGURE 17 Power Panel 66 FIGURE 18 Single Point Dual Point Wiring 68 FIGURE 19 Wiring 70 FIGURE 20 Micro Panel Connections 72 FIGURE 21 Elementary Diagram 74 FIGURE 22 Elementary Diagram 76 FIGURE 23 Unit Clearances All Models 81 FIGURE 24 Setpoints Quick Reference List 117 FIGURE...

Page 9: ...ture And Discharge Pressure 129 TABLE 19 YLUA0248 YLUA0298 Condenser Fan Control Using Discharge Pressure Only 129 TABLE 20 YLUA0248 YLUA0298 Low Ambient Condenser Fan Control Discharge Pressure Control 130 TABLE 21 YLUA0308 YLUA0408 Condenser Fan Control 131 TABLE 22 YLUA0468 YLUA0498 Condenser Fan Control 132 TABLE 23 Compressor Operation Load Limiting 133 TABLE 24 I O Digital Inputs 137 TABLE 2...

Page 10: ...JOHNSON CONTROLS 10 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 11: ...directly driven by independent motors and positioned for vertical air dis charge The fan guards are constructed of heavy gauge rust resistant coated steel All blades are statically and dynamically balanced for vibration free operation Motors The fan motors are Totally Enclosed Air Over squirrel cage type current protected They fea ture ball bearings that are double sealed and perma nently lubri ca...

Page 12: ...e design and manufac ture of the unit to ensure compliance 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 Correct utilization of the machinery in accordance with the procedures detailed in the manuals ABOUT THIS MANUAL The following terms are used in this...

Page 13: ...fied 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 the power supply Servicing and maintenance on live equipment must only be per formed by suitably trained and qualified personnel No attempt should be made to gain access to the control panel or electri...

Page 14: ...JOHNSON CONTROLS 14 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 15: ...nal test is performed to assure that each control device operates correctly The unit structure is heavy gauge galvanized steel This galvanized steel is coated with baked on powder paint which when subjected to ASTM B117 1000 hour salt spray testing yields a minimum ASTM 1654 rating of 6 Units are designed in accordance with NFPA 70 National Elec tric Code ASHRAE ANSI 15 Safety code for mechanical ...

Page 16: ...ation on each refrigerant circuit All expansion valves liquid line solenoid valves refriger ant and refrigerant field piping are supplied by others MICROCOMPUTER CONTROL CENTER All controls are contained in a NEMA 3R 12 cabinet with hinged outer door and include Liquid Crystal Display with Light Emitting Diode backlighting for outdoor viewing Two display lines Twenty characters per line Color code...

Page 17: ...included for pumpdown at shutdown optional remote discharge air temperature reset and two steps of demand load limiting from an external building automation system Unit alarm contacts are standard Intensity of Protection European Standard International Electrotechnical Commission The operating program is stored in non volatile mem ory EPROM to eliminate condensing unit failure due to AC powered fa...

Page 18: ...transformer and the control panel Fac tory mounted POWER FACTOR CORRECTION CAPACI TORS Will cor rect unit compressor power factors to a 0 90 0 95 Factory mounted Control Options AMBIENT KIT LOW Units will operate to stan dard 32 F 4 C This accessory includes all neces sary components to permit condensing unit operation to 0 F 18 C This option includes the Discharge Pressure Transducer Readout Capa...

Page 19: ...y may be exposed to acid rain ENCLOSURE PANELS UNIT Tamperproof En closure Panels prevent unauthorized access to units Enclosure Panels can provide an aesthetically pleas ing alternative to expensive fencing Additionally for proper head pressure control YORK recommends the use of Condenser Louvered Panels for winter applica tions where wind gusts may exceed five miles per hour The following types ...

Page 20: ...OHNSON CONTROLS 20 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 2 PRODUCT DESCRIPTION Figure 2 UNIT COMPONENTS FRONT UNIT COMPONENTS FAN ASSEMBLIES CONTROL PANEL CONDENSER COILS POWER PANEL COMPRESSORS ...

Page 21: ...21 SECTION 2 PRODUCT DESCRIPTION FORM 150 73 NM2 ISSUE DATE 09 07 2020 2 Figure 3 POWER PANEL COMPONENTS LD13247 COMPRESSOR CONTACTORS XTBF1 FAN CONTACTORS FAN CONTACTOR COMPRESSOR OVERLOADS FAN FUSES DISCONNECT SWITCH ...

Page 22: ... 2 PRODUCT DESCRIPTION CONTROL POWER PANEL COMPONENTS Figure 4 POWER PANEL CONTROL COMPONENTS COMPRESSOR OVERLOADS COMPRESSOR CONTACTORS FAN CONTACTORS FAN FUSES CONTROL RELAY MICROCOMPUTER CONTROL CENTER MICROPANEL DISPLAY KEYPAD XTBC1 XTBC2 XTBF2 MICROBOARD LD13248 ...

Page 23: ...RDER Order quantity QTY Order quantity ORDER QTY USA USA origin N USA origin not required Y USA origin required SHIPWT Shipping Weight LBS Crane Rigging Shipping Weight lbs KG Crane Rigging Shipping Weight kg STOCK Stock unit N Unit being built for sold order Y Unit being built for stock CONV Stock conversion N Not a conversion C Order being converted from stock MODEL Model PIN 1 4 YLUA YLUA YL 04...

Page 24: ...l A POWER Power Field PIN 16 17 SX SP Supply TB SD SP NF Disconnect Switch BX SP Circuit Breaker w Lockable Handle DB SP NF Disc Switch w Ind Sys CB TRANS Cntrl Transformer PIN 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 Special Power Capacitor req...

Page 25: ...uired VALVES Valves PIN 32 X Standard Valves Req d Q Special Optional Valves Req d HGBP Hot Gas Bypass PIN 33 X No Hot Gas Bypass required 1 Hot Gas Bypass required 1 circuit 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 Special Crankcase Heater requir...

Page 26: ... Acoustic Blanket Required Q Special Acoustic Blanket required PIN 50 PIN 50 X X Q Special Quote PIN 51 PIN 51 X X Q Special Quote FANS Sound Fans PIN 52 X Standard Low Sound Fans required L Ultra Quiet Fans required Q Special Sound Fans required PAINT PIN 53 X X Q Special Quote ISOL Vibration Isolators PIN 54 X No Isolators required 1 1 Deflection Isolators required N Neoprene Isolators required ...

Page 27: ...IPTION PKG PIN 59 X X Q Special quote PKGOPT PIN 60 X X Q Special quote MFG Plant of Mfg PIN 61 R Plant of Manufacture Monterrey S Plant of Manufacture Sabadell LOC Mfg location CUR Curitiba Brazil MEX Mexico ES MTY Monterrey BE SAT San Antonio Texas YW YorkWorks version CV YorkWorks configuration version YW CV UV YorkWorks upload version YW UV SQ Special quote Q Special quote ...

Page 28: ...LIQUID LINE SERVICE VALVE LIQUID 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 ONLY LIQUID LINE FILTER DRIER D X C O I L AIR FLOW DISCHARGE AIR TEMPERATURE SENSOR OPTIONAL SUCTION TEMP SENSOR FACTORY PIPING FIELD PIPING T T One TXV and Liquid Line So...

Page 29: ...ng to the cooler PS ZCPR 1 ZCPR 2 ZCPR 3 DV HPL HPC P DV 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 Load Limiting LTC Low Temperature Cutout Components Pressure Relief Valve Ser vice Ball Valve Expansion Valve Solenoid Valve Sight Glass Sensor P...

Page 30: ...JOHNSON CONTROLS 30 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 31: ... order to limit the risk of accidental physical 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 inspected during storage INSPECTION Immediately upon receiving the unit it should be in spected for possible damage which may have occurred during transit If damage is evident it should be noted in ...

Page 32: ...ould 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 safety hooks The unit must only be lifted by the base frame at the points provided Never move the unit on rollers or lift the unit using a forklift truck Care should be taken to avoid damaging the conden...

Page 33: ...LLATION The units 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 intended and snow accumulations are expected additional height must be provided to ensure normal condenser air flow Clearances are listed under Notes in the Dimensions English section Foun...

Page 34: ...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 ducting is to be fitted to the fan discharge it is recommended that the duct should be the same cross sectional area as the fan outlet and straight for at least three feet 1 meter to obtain static regain from t...

Page 35: ... pressure cutout is installed in the discharge pip ing of each system The cutout opens at 585 PSIG 10 PSIG and closes at 440 PSIG 25 PSIG ELECTRICAL WIRING Field Wiring Power wiring must be provided through a fused dis connect switch to the unit terminals or optional mold ed disconnect switch in accordance with N E C or local code requirements Minimum circuit ampacity and maximum dual element fuse...

Page 36: ...ntacts that can be used to switch field supplied power to provide a start signal to the evaporator blower contactor Contacts will close whenever the daily schedule is programmed for cooling See Figure 10 on page 43 and unit wiring diagram Compressor Run Contacts Contacts are available to monitor Compressor Run status Normally open auxiliary contacts from each compressor contactor are wired in para...

Page 37: ...ied 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 REFRIGERANT PIPING REFERENCE R 410A Copper Line Sizing When selecting pipe diameter and material for remote condenser piping R 410A systems such as used with YCRL chillers it is recommended that A...

Page 38: ... deg liq 105 deg SUCTION LINES SIZE ID CU FT DENSITY LB CU FT OZ FT GRAMS 30 CM 1 3 8 35mm 1 3 0 0 2 1 0 3 8 1 1 5 8 41mm 1 5 0 0 2 1 0 4 11 5 2 1 8 54mm 2 0 0 0 2 1 0 7 20 0 2 5 8 67mm 2 5 0 0 2 1 1 1 30 9 LIQUID LINES 3 4 19mm 0 7 0 0 60 9 2 4 66 8 7 8 22mm 0 8 0 0 60 9 3 3 92 8 1 1 8 29mm 1 0 0 0 60 9 5 6 158 3 1 3 8 35mm 1 3 0 0 60 9 8 5 241 1 Table 3 MISCELLANEOUS LIQUID LINE PRESSURE DROPS M...

Page 39: ...t 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 When calculating suction line pressure drop for a specific application it should be noted that system capacity decreases as suction line pressure drop increases 4 Nominal Tons KW Unloaded is based on on...

Page 40: ...led to ensure reliable oil re turn at reduced loads Table 4 on page 39 and Table 5 on page 41 indicate when a double suction riser should be used for listed pipe sizes to provide adequate oil return at reduced loads The calculated information was based on maintaining a minimum of 1000 fpm 5 08 m s refrigerant vapor velocity at full load Condenser Below Evaporator When the condensing unit is locate...

Page 41: ...ertical liq uid line is 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 foot 3 4 kPa 30 cm of rise or gain To ensure a solid column of liquid refrigerant to the expansion valve the total maximum pressure drop of the liquid line should not exceed 40 ...

Page 42: ...el Control Panel Terminal Block NF Disconnect SW or Circuit Breaker 1L1 1L2 1L3 GRD MICROPANEL 2 L CTB2 13 14 CTB1 Field Provided Unit Power Supply Field Provided 120 1 60 Micropanel Power Supply if Control Transformer not Supplied Flow Switch See electrical note 9 Power Panel Control Panel Power Panel Control Panel Terminal Block NF Disconnect SW or Circuit Breaker 1L1 1L2 1L3 1L1 1L2 1L3 GRD GRD...

Page 43: ...sconnecting 120VAC power from the unit at or below freezing tem peratures can result in damage to the evaporator and unit as a result of the chilled liquid freezing XTBC1 51 13 13 50 21 13 20 13 PWM INPUT CAN ONLY BE USED WITH DISCHARGE AIR TEMP CONTROL SYSTEM 2 THERMOSTAT SUCTION PRESSURE CONTROL ONLY JUMPER FOR DISCHARGE AIR TEMP CONTROL SYSTEM 1 THERMOSTAT SUCTION PRESSURE CONTROL ONLY JUMPER F...

Page 44: ...JOHNSON CONTROLS 44 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 45: ...C contact the nearest Johnson Controls Office for application guidelines 3 The evaporator is protected against freezing to 20 F 28 8 C with an electric heater as standard 4 For operation at temperatures below 25 F 3 9 C the optional Low Ambient Kit will need to be installed 5 For operation at temperatures above 115 F 46 1 C the optional High Ambient Kit will need to be installed on the system SECT...

Page 46: ...76 4 99 3 33 SHIPPING WEIGHT LBS 3713 3989 4185 4911 5146 5221 6473 6628 COMPRESSORS SCROLL TYPE 0248YE 0278YE 0298YE 0308YE 0338YE 0408YE 0468YE 0498YE COMPRESSORS PER CIRCUIT 3 3 3 3 3 2 2 2 3 2 2 2 3 2 3 2 COMPRESSORS PER UNIT 6 6 5 4 5 4 5 5 NOMINAL TONS PER COMPRESSOR CIRCUIT 1 13 15 15 15 32 15 32 32 32 CIRCUIT 2 13 13 15 32 15 32 32 32 15 32 32 CONDENSER 0248YE 0278YE 0298YE 0308YE 0338YE 0...

Page 47: ...power from the unit at or below freezing temperatures can result in damage to the evaporator and unit as a result of the chilled liquid freezing ELECTRICAL DATA Table 8 MICRO PANEL POWER SUPPLY VOLTAGE RANGE VOLTAGE CODE UNIT POWER MIN MAX 50 380 415 3 50 342 440 MODEL TYPE UNIT VOLTAGE CONTROL POWER MCA NOTE A OVER CURRENT PROTECTION SEE NOTE B NF DISC SW MIN MAX MODELS w o CONTROL TRANS 115 1 60...

Page 48: ...USE MIN CB MAX DUAL ELEM FUSE MAX CB MIN CKT AMPS MIN N F DS MIN DUAL ELEM FUSE MIN CB MAX DUAL ELEM FUSE MAX CB 0248 50 152 200 175 175 79 100 90 100 79 100 90 100 0278 50 163 200 175 175 90 100 100 110 79 100 90 100 0298 50 184 200 200 225 90 100 100 110 101 150 125 150 0308 50 197 250 225 250 105 150 125 150 105 150 125 150 0338 50 222 250 250 250 90 100 100 110 139 150 175 175 0408 50 256 400 ...

Page 49: ...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 300kcmil 2 4AWG 500kcmil 0338 600 S6 600 S6 2 250kcmil 500kcmil 500 S6 600 S6 2 250kcmil 500kcmil 4 4AWG 500kcmil 600 S6 600 S6 2 250kcmil 500kcmil 500 S6 600 S6 2 250kcmil 500kcmil 4 4AWG 500kcmil 400 S5 ...

Page 50: ...ration at ambient temperatures in excess of 95ºF 35ºC is antici pated 4 Maximum fuse 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 UL listed and CSA certi fied and maximum size is based on 225 of the rated load amps for the largest motor plus 100 of ...

Page 51: ... KM COMPRESSOR CONTACTOR INCLUD ING COIL SUPPRESSOR KCR CONTROL RELAY KP PUMP CONTACTOR PART INCLUDING COIL SUPPRESSOR KT RELAY TIMER M COMPRESSOR MOTOR DESIGNATION DESCRIPTION MF MOTOR FAN MP MOTOR PUMP NU NOT USED PE PROTECTIVE EARTH PWM PULSE WIDTH MODULATION TEMP RE SET or REMOTE UNLOAD 2nd STEP QCB CIRCUIT BREAKER QMMSC MANUAL MOTOR STARTER COMPRESSOR QMMSP MANUAL MOTOR STARTER PUMP QSD SWITC...

Page 52: ...o installation commissioning operation and maintenance manual for customer connections and customer connection notes non compliance to these instructions will invalidate unit warranty 2 Wiring and components for compressor 3 only fitted when unit has 3 compressors on the system 1 BMP3 is replaced by a link across terminals 134 135 2 BMP3 is replaced by a link across terminals 234 235 3 When not fi...

Page 53: ...8 0468 31 Input dual point circuit breaker option replaces input terminal block 32 Field installed on remote evaporator units 33 Fitted on units with single phase motors only 34 Fitted on units with low ambient option only 35 Only fitted on units with an acoustic kit 36 Only fitted on heat recovery units 37 Only fitted on condensing units 38 Omitted on condensing units ELECTRICAL NOTES AND LEGEND ...

Page 54: ...JOHNSON CONTROLS 54 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA WIRING DIAGRAMS Figure 11 ELEMENTARY WIRING DIAGRAM ELEMENTARY WIRING DIAGRAMS 035 21583 101 REV D ...

Page 55: ...JOHNSON CONTROLS 55 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 56: ...JOHNSON CONTROLS 56 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 12 ELEMENTARY WIRING DIAGRAM 035 21583 102 REVD ...

Page 57: ...JOHNSON CONTROLS 57 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 58: ...JOHNSON CONTROLS 58 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 13 ELEMENTARY WIRING DIAGRAM ...

Page 59: ...JOHNSON CONTROLS 59 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 60: ...JOHNSON CONTROLS 60 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 14 ELEMENTARY WIRING DIAGRAM 035 21589 107 REV A ...

Page 61: ...JOHNSON CONTROLS 61 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 62: ...JOHNSON CONTROLS 62 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 15 ELEMENTARY WIRING DIAGRAM 035 21589 106 REVE ...

Page 63: ...JOHNSON CONTROLS 63 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 64: ...JOHNSON CONTROLS 64 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA POWER OPTIONS CONNECTION DIAGRAM Figure 16 POWER OPTIONS CONNECTION DIAGRAM LD13234A 035 21589 103 REVB ...

Page 65: ...JOHNSON CONTROLS 65 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 LD13901 ...

Page 66: ...JOHNSON CONTROLS 66 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 17 POWER PANEL 035 21589 101 REVC ...

Page 67: ...JOHNSON CONTROLS 67 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 68: ...JOHNSON CONTROLS 68 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA 035 21583 116_rev Figure 18 SINGLE POINT DUAL POINT WIRING ...

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Page 70: ...JOHNSON CONTROLS 70 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA WIRING 035 21583 106 REVA LD13238 Figure 19 WIRING ...

Page 71: ...JOHNSON CONTROLS 71 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 LD13239 ...

Page 72: ...JOHNSON CONTROLS 72 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA MICRO PANEL CONNECTIONS Figure 20 MICRO PANEL CONNECTIONS 035 21589 102 REVD ...

Page 73: ...JOHNSON CONTROLS 73 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 74: ...JOHNSON CONTROLS 74 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 21 ELEMENTARY DIAGRAM LD13992A 035 21583 103 REV B ...

Page 75: ...JOHNSON CONTROLS 75 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 LD13993A 1 ...

Page 76: ...JOHNSON CONTROLS 76 FORM 150 73 NM2 ISSUE DATE 09 07 2020 SECTION 5 TECHNICAL DATA Figure 22 ELEMENTARY DIAGRAM 035 21589 105 REVA ...

Page 77: ...JOHNSON CONTROLS 77 SECTION 5 TECHNICAL DATA FORM 150 73 NM2 ISSUE DATE 09 07 2020 5 5 ...

Page 78: ...SUCTION IN LIQUID OUT SUCTION IN LIQUID OUT YLUA0248YE 116 1 88 3 95 3 89 7 43 9 2 7 1 1 39 6 17 17 84 3 YLUA0278YE 116 1 88 3 95 3 89 7 43 9 2 7 1 1 39 6 17 17 84 3 YLUA0298YE 116 1 88 3 95 3 89 7 43 9 2 7 1 1 39 6 17 17 84 3 MODEL ISOLATOR LOCATION DIMENSIONS RIGGING HOLE LOCATIONS D2 I1 I2 I3 I4 I5 I6 I7 I8 A B R1 R2 R3 R4 YLUA0248YE 35 5 19 5 76 6 1 3 85 5 23 2 68 3 YLUA0278YE 35 5 19 5 76 6 1...

Page 79: ... IN 1 2 LIQUID OUT 1 2 SUCTION IN LIQUID OUT SUCTION IN LIQUID OUT YLUA0308YE 143 5 88 3 95 3 89 7 43 9 2 7 1 1 41 26 9 26 9 84 4 YLUA0338YE 143 5 88 3 95 3 89 7 43 9 2 7 1 1 41 24 0 26 9 60 4 YLUA0408YE 143 5 88 3 95 3 89 7 43 9 2 7 1 1 41 26 9 26 9 84 4 MODEL ISOLATOR LOCATION DIMENSIONS RIGGING HOLE LOCATIONS D2 I1 I2 I3 I4 I5 I6 I7 I8 A B R1 R2 R3 R4 YLUA0308YE 35 5 7 6 69 8 47 4 1 4 85 5 23 2...

Page 80: ...1 2 SUCTION IN LIQUID OUT SUCTION IN LIQUID OUT YLUA0468YE 187 5 88 3 95 3 89 7 43 9 3 1 2 7 1 4 1 1 41 4 26 5 44 6 111 3 YLUA0498YE 187 5 88 3 95 3 89 7 43 9 3 1 2 7 1 4 1 1 41 4 26 5 44 6 111 3 MODEL ISOLATOR LOCATION DIMENSIONS RIGGING HOLE LOCATIONS D2 I1 I2 I3 I4 I5 I6 I7 I8 A B R1 R2 R3 R4 YLUA0468YE 35 5 7 6 69 80 1 4 85 5 39 66 58 YLUA0498YE 35 5 7 6 69 80 1 4 85 5 39 66 58 All Dimensions ...

Page 81: ...73 NM2 ISSUE DATE 09 07 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 feet 3 Meters apart LD13243 Figure 23 UNIT CLEARANCES ALL MODELS 1 3 m 2 m 2 m 2 m ...

Page 82: ... 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 the following page The drawing will show the isolator locations along with the weight in pounds and kilograms at the specific location isolator position and location measurements for each isolator SA...

Page 83: ...o 1020 348 to 463 CP 1D 1360 WHITE 1021 to 1156 464 to 524 CP 1D 1785N GRAY RED 1157 to 1785 525 to 810 MODEL NUMBER COLOR CODE RATED CAPACITY FOR UNITS WITH ANY LOAD POINT ABOVE 1518 LBS 689 KG LBS KG C2P 1D 1350 DARK PURPLE Up to 1148 Up to 521 C2P 1D 1350 DARK PURPLE Up to 1148 Up to 521 C2P 1D 1800 DARK GREEN 1149 to 1530 522 to 694 C2P 1D 2400 GRAY 1531 to 2040 695 to 925 C2P 1D 2400 GRAY 153...

Page 84: ... eling all isolator bases to the same elevation 1 4 inch maximum difference can be tolerated 4 Bolt or anchor all isolators to supporting structure utilizing base slotted holes c 5 Place equipment on top of isolators making sure that mounting holes of the equipment line up with isolator positioning pin h 6 The adjustment process can only begin after the equipment or machine is at its full operatin...

Page 85: ...88 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 Ø3 4 TYP 4 3 1 2 5 8 11UNC TYP 4 2 3 4 3 4 7 8 1 1 8 3 8 GAP 5 1 2 LIMIT STOP and NUT Notes 1 All dimensions are in inches interpret per ANSI Y14 2 Standard finish housing powder coated color black spring powder coated colo...

Page 86: ...using These shims must be in place when the equipment is positioned over the isolators 6 With all shims E in place position equipment on top of plate A of isolator Bolt equipment securely to top plate of isolator using a minimum of 2 5 8 UNC A325 grade 5 SAE bolt or weld equipment or bracket to the top plate A of iso lator with a minimum 3 8 fillet welds 2 long 3 O C For a minimum total weld of 10...

Page 87: ...u 1688 375 766 RD 4 CHARCOAL WR CHARCOAL 1689 thru 4000 767 1814 DURULENE ISOLATOR CROSS REFERENCE RD Style Isolators L AL DW BT HF ø AD THRU TYP 2 PLACES MOLDED DURULENE CD W Notes 1 All dimensions are inches interpreted per ANSI Y14 2 See the following page for installation instructions 3 Mount molded in weather resistant Duralene compound as standard Also available in other materials such as na...

Page 88: ...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 grout as re quired leveling all isolator bases to the same elevation 1 32 inch maximum difference can be tolerated 4 Bolt or anchor all isolators to supporting structure utilizing base thru holes B 5 R...

Page 89: ...ect a YORK hand oil pump Part No 470 10654 000 to the 1 4 oil charging valve on the compressors with a length of clean hose or copper line but do not tighten the flare nut Using clean oil of the correct type V oil pump oil until all air has been purged from the hose then tighten the nut Stroke the oil pump to add oil to the oil system The oil level should be between the bottom and middle of the si...

Page 90: ...tion devices can now be set to ON Verify the control panel display is illuminated Assure the system switches under the SYSTEM SWITCHES Key are in the OFF position Compressor Heaters Verify the compressor heaters are energized If the ambient temperature is above 96 F 36 C the com pressor heaters must be on for at least 8 hours before start up to ensure all refrigerant liquid is driven out of the co...

Page 91: ... 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 average voltage 2 Apply 120VAC and verify its value on the terminal block in the Power Panel Make the measurement between terminals 5 and 2 of XTBC2 The voltage should be 120VAC 10 A UNIT CHECKS Checkin...

Page 92: ...ailure 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 the control panel to the ON position As each compressor cycles ON ensure that the discharge pressure rises and the suction pressure decreases If this does not occur the compressor being tested is opera...

Page 93: ...F 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 compressor and the temperature corresponding to the suction pressure as shown in a standard pressure temperature chart Example Suction Temp 46 F minus Suction Press 60 PSIG converted to Temp 34 F Superheat...

Page 94: ...JOHNSON CONTROLS 94 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 95: ... control panel 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 them and scans them to keep a constant watch on the unit operating conditions From this information the Microprocessor then issues com mands to the Relay Outputs to control contactors sole no...

Page 96: ...sures 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 ing and commissioning the chiller It is essential the user become familiar with the use of the keypad and display This will allow the user to make full use of the capabilities and diagnostic fe...

Page 97: ...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 or a remote start stop contact is open in series with the flow switch A 3 second delay is built into the software to prevent nuisance shutdowns due to errone ous signals on the run permissive input S Y...

Page 98: ...essage appears suction pressure limit ing is in effect The suction pressure limit is a control point that limits the loading of a system when the suc tion pressure drops to within 15 above the suction pressure cutout On a standard system programmed for 80 PSIG 5 52 Bar suction pressure cutout the mi cro would inhibit loading of the affected system with the suction pressure less than or equal to 1 ...

Page 99: ... 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 will stop This cutout is completely ignored for the first 30 sec onds of system run time to avoid nuisance shutdowns especially on units that utilize a low pressure switch in place of the suction pressure transducer After th...

Page 100: ...re malfunction of the mi croprocessor could result in system damage When the 115VAC to the micro panel drops below a certain level a unit fault is initiated to safely shut down the unit Re start is allowed after the unit is fully powered again and the anti recycle timers have finished counting down U N I T F A U L T H I G H M T R C U R R When the CURRENT FEEDBACK ONE PER UNIT option is selected un...

Page 101: ...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 Limiting System X Percentage Load Limiting Manual Overide Status System X Pumping Down on shutdown System Safeties System X High Disch Pressure System X Low Suct Pressure System X MP HPCO Fault Unit Safeties Low Ambient Tem...

Page 102: ... 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 list of operating data screens are view able under the Oper Data key in the order that they are displayed The DOWN arrow key scrolls through the displays in the order they appear below The unit MUST b...

Page 103: ...e 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 unload Whether the systems loads or unloads is determined by how far the actual liquid temperature is from setpoint A detailed description of unit loading and unloading is covered under the topic of ...

Page 104: ... N S 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 compressors which are running The second message indicates the system run time in days hours minutes seconds Please note that this is not accumulated run time but pertains only to the current system c...

Page 105: ...CONDENSING UNIT UNIT STATUS 2 04PM 01 MAR 09 SYS 1 NO COOLING LOAD SYS 2 COMPRESSORS RUNNING 2 OPTIONS AMBIENT CONTROL STANDARD LOCAL REMOTE MODE REMOTE CONTROL MODE LEAVING LIQUID LEAD LAG CONTROL AUTOMATIC FAN CONTROL AMB DSCH PRESS CURRENT FEEDBACK NONE SOFT START ENABLED EXPANSION VALVE THERMOSTATIC PROGRAM VALUES DSCH PRESS CUTOUT 395 PSIG SUCT PRESS CUTOUT 44 PSIG LOW AMBIENT CUTOUT 25 0 DEG...

Page 106: ... memory battery backup is built into the circuit board or manual resetting of 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 buffers The printout will begin with the most recent fault which occurred The most recent fault will always be stored as Saf...

Page 107: ...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 unit Liquid Condensing Unit or Heat Pump A M B I E N T C O N T R O L X X X X X X X X X X Displays the type of Ambient Control Standard or Low Ambient L O C A L R E M O T E M O D E X X X X X X X X X Displays Local or Remote control selection C O N T R O L...

Page 108: ...arge 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 P S I G R A N G E X X X P S I G Displays the SP Setpoint and Control Range if SP Con trol is selected A M B I E N T A I R T E M P X X X X F Displays the Ambient Temp at the time of the fault L E A D S Y S T E M I S S Y S T E M N U M B E R X Displays which system is in the lead at the time of the fault E V A P P ...

Page 109: ...he 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 prior to the SYS 1 info If the micro is programmed for CURRENT FEEDBACK NONE no current display will appear Displays for System 1 starting with SYS X NUMBER OF COMPS RUNNING X through SYS X AMPS XXX X VOLTS X X will be displayed first fol lowed by displays fo...

Page 110: ...UP and 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 schedule changing safety setpoints unit options and setting the clock Enter adv Key The ENTER ADVkey must be pushed after any change is made to the cooling setpoints daily schedule safety setpoints ...

Page 111: ...t under the Option Key to allow programming of appropriate setpoints This is accom plished 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 COOLING SETPOINT key indicating the cooling mode L O C A L D I S C H A R G E A I R T E M P C O N T R O L This message indicates that the cooling setpoint is un der LOCAL c...

Page 112: ...S Y S X S P 1 0 5 __ P S I G 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 Suction Pressure Control are the suction pressures of each individual system on the condensing Unit and will control to within the cooling range On two system units each system ...

Page 113: ...ess the SCHEDULE AD VANCE DAY 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 SCHEDULE ADVANCE DAY key will display the Holiday schedule This is a two part display The first reads H O L S T A R T 0 0 0 0 A M S T O P 0 0 0 0 A M The times may be set using t...

Page 114: ...ted as high as possible The 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 circuit will not be permitted to start until the anti recycle timer has timed out If the lead system has run for less than 5 minutes 3 times in a row the anti recycle timer wi...

Page 115: ...ed using the following for mulas 460VAC System Trip Volts For individual system high current trip programming on 460VAC units Add the sum of the compressor and fan RLA s in the system Multiply the sum by 1 25 Divide by 225A The resulting voltage is the value that should be pro grammed For example if fan and compressor RLA s total 100A 5V x 100A x 1 25 625VA 2 8V 225A 225A The programmed value will...

Page 116: ...prevent going below 235 PSIG based on where the fan control On Pressure is programmed PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT DISCHARGE PRESSURE CUTOUT 325 PSIG 575 PSIG 570 PSIG 22 4 BARG 39 6 BARG 39 3 BARG SUCTION PRESSURE CUTOUT 800 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 F 60...

Page 117: ...adv 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 Ambient Temp and Cutout Range Display Only EMS PWM Anti Recycle Remote Temp Timer Reset Setpoint Discharge Air Temp mode only Fan Control On Pressure Fan Differential Off Pressure SYS Unit Trip Vo...

Page 118: ...e 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 S W I T C H O F F This turns system 2 off S Y S 1 S W I T C H O F F S Y S 2 S W I T C H O N This turns system 1 off or S Y S 1 S W I T C H O F F S Y S 2 S W I T C H O F F This turns systems 1 2 off Turning a system off with its system switch allows a pumpdo...

Page 119: ...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 7 Lead Lag Type two system units only L E A D L A G C O N T R O L M A N U A L S Y S 1 L E A D SYS 1 selected as lead compressor SYS 1 lead option MUST be chosen if Hot Gas Bypass is installed or L E A D L A G C O N T R O L M A N U A L S Y S 2 L E A D SYS 2 selected as lead compre...

Page 120: ...rent monitoring of each system SYS 1 input is to J7 4 to J7 12 of the micro SYS 2 input is to J9 4 to J9 12 of the micro Option 11 Power Fail Restart P O W E R F A I L R E S T A R T A U T O M A T I C Unit auto restarts after a power failure P O W E R F A I L R E S T A R T M A N U A L After a power failure the UNIT switch must be tog gled before restart at the unit is allowed NORMALLY MANUAL RESTAR...

Page 121: ...rred the following message will appear with the error code and no reboot will occur F L A S H C A R D U P D A T E E R R O R XXXXX If theupdate resulted in an error the original program will still be active When an error occurs assure the correct Flash Card was utilized Incorrect unit soft ware will cause an error If this is not the case the Flash Card is most likely defective or the IPU and I O co...

Page 122: ...A Y I S F R I 0 8 5 1 A M 2 5 J A N 0 8 The line under the F is the cursor If the day is correct press the ENTER ADV key The cursor will move un der the 0 in 08 hours If the day is incorrect press the UP or DOWN arrow keys until the desired day is displayed and then press the ENTER ADV key at which time the day will be accepted and the cursor will move under the first digit of the 2 digit hour In ...

Page 123: ...ammed 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 Control Manual or Automatic Fan Control Mode Manual Override Mode Current Feedback Option Soft Start Option Power Failure Restart Unit Type Condensing Unit MUST be Selected Via Jumper Installed Viewable Only Refrigerant Type R410A Programmed U...

Page 124: ...JOHNSON CONTROLS 124 FORM 150 73 NM2 ISSUE DATE 09 07 2020 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 125: ... 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 or dirty condenser coils The micro monitors discharge pressure and unloads a system if fully loaded by one compressor when discharge pressure exceeds the pro grammed cutout minus 10 PSIG 0 69 barg Relo...

Page 126: ...s 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 compressor start sequence to help even out the run hours in a system therefore piping suction risers should be sized off the smallest compressor capacity in either system Table 17 DISCHARGE AIR TEMPERATURE CONTROL FOR 4 COMPRESSORS 6 S...

Page 127: ...e suction 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 Figure 27 SUCTION PRESSURE CONTROL 30 second control range 150 second unloading no compressor staging loading 117 PSIG 8 0 BAR 126 PSIG 8 7 BAR Setpoint 121 PSIG 8 3 BAR Setpoint 121 PSIG 8 3 BAR Control Range 5 PSIG 0 3...

Page 128: ...The 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 system has run for less than 5 minutes 3 times in a row the anti recycle timer will be extended to 10 minutes ANTI COINCIDENCE TIMER This timer is not present on single system units Two timing control...

Page 129: ...SYS 2 SYS 1 SYS 2 SYS 1 SYS 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 OAT 60 F 15 6 C AND DP Fan Ctrl On Press Diff Press 40 PSIG 2 76 Bars 7M 8M 10M 11M TB7 8 TB7 9 TB10 8 TB10 9 1 3 2 4 FAN STAGE ON OFF CONTACTOR I O BOARD OUTPUT FAN SYS 1 S...

Page 130: ...rge pressure only 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 Fan Ctrl On Press 20 PSIG 1 38 Bars DP Fan Ctrl On Press Diff Press 20 PSIG 1 38 Bars 8M 11M TB7 9 TB10 9 3 FWD 4 FWD 3 2 FANS FWD DP Fan Ctrl On Press 40 PSIG 2 76 Bars DP Fan Ctrl On P...

Page 131: ...he various models These models are equipped to operate to 0 F ambient as a standard Figure 29 YLUA0308 YLUA0408 FAN LOCATION 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 Fan Ctrl On Press DP Fan Ctrl On Press Diff Press 10M 14M TB7 9 TB10 9 7 8 2 2 FANS FWD DP Fan Ctrl On Press 20 PSIG 1 38 Bars DP Fan Ctrl On Press Diff Press 20 PSIG 1 38 Bars...

Page 132: ...ls These models are equipped to operate to 0 F ambient as a standard FAN 3 FAN 5 FAN 7 FAN 1 FAN 4 FAN 6 FAN 8 FAN 2 FAN STAGE ON OFF CONTACTOR MICROBOARD OUTPUT TB 4 FAN SYS 1 SYS 2 SYS 1 SYS 2 SYS 1 SYS 2 1 1 FAN FWD DP Fan Ctrl On Press DP Fan Ctrl On Press Diff Press 10M 14M 2 6 7 8 2 2 FANS FWD DP Fan Ctrl On Press 20 PSIG 1 38 Bars DP Fan Ctrl On Press Diff Press 20 PSIG 1 38 Bars 9M 10M 13M...

Page 133: ...s The first stage of limiting is either 80 66 or 50 de pending 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 6 compressor units Table 25 shows the load limiting permitted for the various numbers of compressors Simultaneous operation of Remote Load Limiting and EMS PWM Temperature Reset described on following pages cannot occur...

Page 134: ...0 F 11 11 C Input Signal 6VDC English Reset 6VDC x 20 F 12 F Reset 10 New Setpoint 45 F 12 F 57 F Metric Reset 6VDC x 11 11 C 6 67 C Reset 10 New Setpoint 7 22 C 6 67 C 13 89 C Max Reset Value is the Max EMS PWM Remote Temp Reset setpoint value described in the programming section under Cooling Setpoints Programmable values are from 2 F to 40 F 1 11 C to 11 11 C Note The Suction Pressure Setpoints...

Page 135: ...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 until you scroll past the last history buffer choice The following message will be displayed Pressing the ENTER ADV key at this display will cause the history buffers to be cleared Pressing any other ke...

Page 136: ...row 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 DIGITAL INPUTS After entering Service Mode PROGRAM all digital and analog inputs to the microboard can be viewed by pressing the OPER DATA key After pressing the OPER DATA key the UP arrow and DOWN ar...

Page 137: ...otector High Pressure Cutout Table 25 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 TB10 2 SYS 2 Compressor 1 TB10 3 SYS 2 Liquid Line Solenoid Valve TB10 4 SYS 2 Compressor 2 TB10 5 SYS 2 Compressor 3 TB7 8 SYS 1 Condenser Fan Output 1 TB7 9 SYS 1 Condenser Fan Output 2 TB7 10 ...

Page 138: ...OLS 138 FORM 150 73 NM2 ISSUE DATE 09 07 2020 Section 9 SERVICE AND TROUBLESHOOTING Figure 31 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 BOARD JP1 LD12721 ...

Page 139: ...hat particular digital input Typically voltages of 24 36VDC could be measured for the DC voltage on the digital inputs This voltage is in reference to ground The unit case should be suffi cient as a reference point when measuring digital input voltages Analog Inputs Temperature Refer to the unit wiring diagram Temperature inputs are connected to the microboard on plug J6 These ana log inputs repre...

Page 140: ...tandard on all YLUA s The suction pressure transducers have a range of 0 to 400 PSIG The output will be linear from 0 5VDC to 4 5VDC over the 400 PSIG 27 5 barg range The discharge transducers have a range from 0 to 650 PSIG The output will be linear from 0 5VDC to 4 5VDC over the 650 PSIG 41 25 barg range Fol lowing is the formula that can be used to verify the voltage output of the transducer Al...

Page 141: ...tion 0VDC System 2 Discharge Transducer J9 6 5VDC regulated supply to transducer J9 11 VDC input signal to the microboard See the formula above for voltage readings that correspond to specific discharge pressures J9 7 5VDC return J9 2 drain shield connection 0VDC The suction transducers have a range from 0 to 400 PSIG 27 5 barg The output will be linear from 0 5VDC to 4 5VDC over the 400 PSIG 27 5...

Page 142: ... the respective output connection energizing contactors evaporator heater and solenoids according to the operating sequence see Figure 32 on page 142 120VAC is supplied to the I O board via connections at TB7 1 TB7 6 TB10 1 TB10 6 TB8 1 and TB9 1 Figure 32 on page 142 illustrates the relay contact architecture on the microboard Figure 32 I O BOARD RELAY CONTACT ARCHITECTURE LD12722 SYS 1 COMP 1 TB...

Page 143: ...ically 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 The following parts are required 1 WEIGH TRONIX model 1220 printer 2 2 25 5 7cm wide desk top calculator paper 3 25 ft 7 62m maximum length of Twisted Pair Shielded Cable minimum 3 conductor 18AWG stranded 3...

Page 144: ...acts 5 to L of XTBC2 Terminal Block 1c Replace Control Transformer 2 Check wiring Control Trans former to Microboard 3 Replace Control Transformer 4 Unplug connections at IPU I I O Board to isolate 5 Replace IPU II I O Board or the Display Board Contact Johnson Con trols Service before re placing Circuit Boards FLOW SWITCH REM STOP NO RUN PERMISSIVE 1 No air flow 2 Air Proving Switch improperly in...

Page 145: ...BLESHOOTING for pres sure voltage formula 7 Replace LLSV HIGH DISCHARGE PRESSURE FAULT 1 Condenser fans not operating or operating backwards 2 Too much refrigerant 3 Air in refrigerant system 4 Defective Discharge Pressure Transducer 1 Check Fan Motor and Con tactors Assure Fan blows air upward 2 Remove refrigerant 3 Evacuate and recharge system 4 Replace discharge pressure See Section 9 SERVICE A...

Page 146: ...ration and capacity control 2 Compare the display with a thermometer Should be within 2 degrees See Section 9 SERVICE AND TROUBLE SHOOTING for RWT LWT temp voltage table 3 Replace defective part 4 Diagnose cause of failure and replace LACK OF COOLING EFFECT 1 Check DX Coil 2 Improper air flow through the DX Coil 3 Low refrigerant charge Low suction pressure will be ob served 1 Contact the local Jo...

Page 147: ...e taken and analyzed If contaminants are present the system must be cleaned to prevent compressor failure Never use the scroll compressor to pump therefrigerantsystemdownintoavacuum Doing so will cause internal arcing of the compressor motor which will result in fail ure of compressor CONDENSER FAN MOTORS Condenser fan motors are permanently lubricated and require no maintenance CONDENSER COILS Di...

Page 148: ...ti Coincidence Timer P26 68 71 Analog SYS 2 Suction Temp EEV Only P27 72 75 Analog SYS 2 Run Time Seconds P28 76 79 Analog SYS 2 Suction Pressure P29 80 83 Analog SYS 2 Discharge Pressure P30 84 87 Analog P31 88 91 Analog P32 92 95 Analog SYS 2 Suction Superheat EEV Only P33 96 99 Analog SYS 2 Anti Recycle Timer P34 100 103 Analog SYS 2 EEV Output EEV Only P35 104 107 Analog of Compressors P36 108...

Page 149: ... 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 Stage P62 134 Coded P63 135 Coded SYS 2 Condenser Fan Stage P64 136 Coded P65 137 Coded Unit Control Mode 0 Leaving Water 1 Return Water 2 Discharge Air 3 Suction Press 4 Cooling 5 Heating P66 138 141 Analog Anti Recycle Ti...

Page 150: ...NO RUN PERMISSIVE 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 DISCHARGE TEMPERATE 13 SUCTION LIMITING 13 IMPROPER PHASE ROTATION 14 DISCHARGE LIMITING 14 LOW MOTOR CURRENT MP HPCO 15 CURRENT LIMITING 15 MOTOR CURRENT UNBALANCED 16 LOAD LIMITING 16 LOW DIFFER...

Page 151: ...ER 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 MANUAL MAC ADDRESS XXX P2 BAUD RATE XXXXX P2 PARITY XXXXX P2 STOP BITS X REAL TIME ERROR RESET 1 YES 0 NO 0 BACNET AND MODBUS DATA COMMUNICATION In some cases BACnet parameters may need to be modified Modification is accomplished by pressin...

Page 152: ... EVEN ODD IGNORE SELECTABLE P1 PROTOCOL BACNET API BACNET BACNET API SELECTABLE P2 PROTOCOL 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 Table 36 REAL TIME ERROR NUMBERS ERROR NUMBER DESCRIPTION 0 ALL OK 1 DATUM TYPE OK TEST FAILED 2 ENGLISH TEXT TOO LONG 3 FLOATING POINT EXCEPTION 4 GET PACKET FAILED...

Page 153: ...ction The Modbus Register Address for these points is 1537 BV Table 38 SERIAL COMMUNICATION BINARY VALUE DATA BV BACNET NAME BINARY VALUE DESCRIPTION 1 START_STOP START STOP COMMAND 2 SS_SYS1 SYS 1 START STOP COMMAND SUCTION PRESSURE CONTROL 3 SS_SYS2 SYS 2 START STOP COMMAND SUCTION PRESSURE CONTROL SERIAL COMMUNICATION ANALOG INPUT DATA This data can be read using a BACnet or Modbus network conn...

Page 154: ...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 3 DIS CHARGE AIR 4 SUCTION PRESS 5 COOLING 6 HEATING 34 AR_TIME ANTI RECYCLE TIME PROGRAMMED 35 LCHLT_CUT LEAVING CHILLED LIQUID TEMP CUTOUT 36 LOW_AMB_CUT LOW AMBIENT TEMPERATURE CUTOUT 37 SUCT_P_CO_HT LOW SUCTION PRESSURE CUTOUT HEATING HP ONLY 38 L...

Page 155: ...N 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 SOURCE HP ONLY 11 S1_C2_RUN SYS 1 COMP 2 RUN 12 S2_C2_RUN SYS 2 COMP 2 RUN 13 S2_LLSV SYS 2 LIQUID LINE SOLENOID VALVE 14 S2_MODE_SV SYS 2 MODE SOLENOID VALVE HP ONLY 15 LEAD_SYS LEAD SYSTEM 0 SYS 1 1 SY...

Page 156: ... 74 165 2 188 86 7 76 168 8 192 88 9 78 172 4 196 91 1 80 176 200 93 3 82 179 6 204 95 6 84 183 2 208 97 8 86 186 8 212 100 0 88 190 4 216 102 2 90 194 220 104 4 92 197 6 224 106 7 94 201 2 228 108 9 96 204 8 232 111 1 98 208 4 236 113 3 100 212 240 115 6 102 215 6 244 117 8 104 219 2 F C C F 0 0 0 0 4 2 2 2 3 6 8 4 4 4 7 2 12 6 7 6 10 8 16 8 9 8 14 4 20 11 1 10 18 24 13 3 12 21 6 28 15 6 14 25 2 ...

Page 157: ...18 30 120 41 20 28 125 43 22 26 130 45 24 24 135 47 26 20 140 49 28 18 145 51 30 16 150 53 32 14 160 57 34 12 170 60 36 10 180 64 38 8 190 67 40 6 200 70 42 4 210 73 44 3 220 76 46 2 225 78 48 0 235 80 50 1 245 83 52 3 255 85 54 4 265 88 56 6 275 90 58 7 285 92 60 8 295 95 62 10 305 97 64 11 325 101 66 13 355 108 68 14 375 112 70 15 405 118 72 16 500 134 74 17 600 149 76 19 700 159 R410A PRESSURE ...

Page 158: ...ennsylvania 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 NM2 920 Issue Date September 07 2020 Supersedes 150 73 NM2 609 ...

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