Name: York YCAS Series
Brand: York
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124

YORK INTERNATIONAL

FORM 201.19-NM8 (804)

COMPRESSOR COMPONENTS

FIG. 66 – COMPRESSOR COMPONENTS

Technical Data

SUCTION GAS

MOTOR TERMINALS

LIFTING LUG

THREADED

HOLE

OIL

HEATER

ECONOMIZER

GAS IN

DISCHARGE

CASE

OIL INLET

FROM

CONDENSER

COOLING COIL

DISCHARGE GAS OUT

OIL FILTER

BLEED &

EVACUATION

POINT

OIL FILTER

COVER PLATE

CAPACITY CONTROL SOLENOID

(CAPACITY CONTROL, 3 WAY VALVE,

IS LOCATED UNDER THE SOLENOID)

LIFTING LUG

THREADED HOLE

OIL PRESSURE

TRANSDUCER

LOCATION

ROTOR CASE

LD03668

STATOR

LOCKING BOLT

EVACUATION

PORT

Default Chapter4
- Table of Contents4
Section 1 - General Chiller Information & Safety9
- Warranty9
- About this Manual10
- Misuse of Equipment10
- Responsibility for Safety10
- Emergency Shutdown11
- Introduction9
- Safety9
  - Standards for Safety9
Fig. 1 - Component Locations12
- Evaporator13
- Condenser13
- Introduction12
  - General Description12
  - Compressor12
Section 2 - Product Description12
Fig. 2 - Screw Compressor13
- Economizer14
- Oil Separator/System14
- Capacity Control15
- Microprocessor Controls15
- Motor Current Protection15
- Power and Control Panel15
- Current Overload16
- Motor Protection Modules (2ACE)16
- Current Imbalance (Loaded & Unloaded)17
- Improper Phase Sequence17
- Loss of Phase17
- Thermal Overload17
- Table 1 - Motor Protector Dip Switch Setting18
- Keypad Controls20
  - Display20
  - Program21
- Motor Starting20
- Accessories and Options21
  - Multiple Point Power Connection21
  - Single-Point Power Connection with Individual Circuit Protection21
  - Control Circuit Terminal Block21
  - Building Automation System (BAS) Interface21
  - Condenser Coil Protection21
- DX Evaporator and Starter Options22
- Fan Options22
- Sound Reduction Options22
- Unit Enclosure Options22
- Vibration Isolation22
- Nameplate Engineering Data23
- Unit Nomenclature23
- Product Identification Number (Pin)24
- Delivery and Storage25
- Inspection25
- Moving the Chiller25
  - Lifting Weights25
Section 3 - Handling and Storage25
Fig. 3 - Unit Rigging26
Fig. 4 - Lifting Lugs26
Unit Rigging26
- Indoor Installations27
- Location Clearances27
- Location Requirements27
- Outdoor Installations27
Section 4 - Installation27
- Compressor Feet Bolt Removal28
Fig. 5 - Compressor Mounting28
- Pipework Connection29
  - General Requirements29
- Shipping Braces29
- Vibration Isolators29
  - Installation29
Fig. 6 - Pipework Arrangement30
- Water Treatment30
- Connection Types & Sizes31
- Ductwork Connection31
  - General Requirements31
- Evaporator Connections31
  - Option Flanges31
Fig. 7 - Victaulic Groove31
Fig. 8 - Flange Attachments31
- Pipework Arrangement31
- Refrigerant Relief Valve Piping31
- 115Vac Control Supply Transformer32
  - Remote Emergency Stop Device33
- Electrical Connection32
- Power Wiring32
- Standard Units with Multi Point Power Supply Wiring32
  - Units with Single-Point Power Supply Wiring32
- Control Panel Wiring33
- System Inputs33
- Volts Free Contacts33
Fig. 9 - Power Panel Section34
Fig. 10 - Option Panel Section35
Fig. 11 - Logic Section Layout36
Fig. 12 - Logic Section Layout with37
Fig. 13 - Customer Connections38
Fig. 14 - Customer Connections38
- Preparation40
- Preparation - Power off40
Section 5 - Commissioning40
- First Time Start-Up42
- General Description44
- Normal Running and Cycling44
Section 6 - Operation44
- Shutdown44
- Start-Up44
Fig. 15 - Flow Rate and Pressure Drop46
Fig. 16 - Glycol Correction Factors46
- Flow Rate and Pressure Drop Charts46
- Glycol Correction Factors46
Section 7 - Technical Data46
- Physical Data - Ycas R-407C (si Units)48
- Operating Limitations and Sound Power Data49
- Electrical Data50
Fig. 17 - Multiple Point Power Supply Connection50
- Multiple Point Power Supply Connection50
Fig. 18 - Multiple Point Power Supply Connection with Individual System Circuit Breakers51
- Multiple Point Power Supply Connection51
Fig. 19 - Optional Single-Point Power Supply Connection with Individual System Circuit Breakers52
- Optional Single Point Power Supply Connection and Individual System Circuit Breakers52
- Electrical Notes54
Table 2 - Compressor Data55
Fig. 20 - Elementary Wiring Diagram - Dxst Direct Drive 3 Compressor56
- Wiring Diagrams56
Fig. 21 - Elementary Wiring Diagram - Across The-Line Start 3 Compressor57
Fig. 22 - Elementary Wiring Diagram - Wye Delta Start 3 Compressor58
Fig. 23 - Control Power Transformer Kit59
Fig. 24 - Elementary Wiring Diagram Dxst Direct Drive Control Circuit60
Fig. 25 - Connection Diagram 3 Compressor62
Fig. 26 - Connection Diagram 3 Compressor63
Fig. 27 - Connection Diagram 3 Compressor64
Fig. 28 - Connection Diagram 3 Compressor66
Fig. 29 - Connection Diagram 3 Compressor67
Fig. 30 - Elementary Diagram 3 Compressor Dxst Direct Drive Control Circuit68
Fig. 31 - Elementary Diagram Dxst Direct Drive - 3 Compressor69
Fig. 32 - Connection Diagram System Wiring 3 Compressor70
Fig. 33 - Connection Diagram Ststem Wiring71
Fig. 34 - Elementary Wiring Diagram - 4 Compressor72
Fig. 35 - Elementary Wiring Diagram - Across-The-Line Start73
- Wiring Diagrams73
Fig. 36 - Elementary Wiring Diagram - Wye Delta Start74
Fig. 37 - Control Power Transformer Kit75
Fig. 38 - Elementary Wiring Diagram76
Fig. 39 - Connection Diagram 4 Compressor78
Fig. 40 - Connection Diagram 4 Compressor79
Fig. 41 - Elementary Wiring Diagram80
Fig. 42 - Connection Diagram 4 Compressor82
Fig. 43 - Connection Diagram 4 Compressor83
Fig. 44 - Connection Diagram 4 Compressor84
Fig. 45 - Elementary Diagram - Dxst Direct Drive Control Circuit86
Fig. 46 - Elementary Diagram - Dxst Direct Drive Control Circuit87
Fig. 47 - Connection Diagram System Wiring88
Fig. 48 - Connection Diagram System Wiring89
Fig. 49 - Compressor Terminal Box, System90
- Dimensions - Ycas0685 (Si)94
Fig. 50 - Model Ycas0685 Dimensions (Si)94
- Dimensions - Ycas0775 - Ycas0905 (Si)96
Fig. 51 - Model Ycas0775 - 0905 Dimensions (Si)96
- Dimensions - Ycas0965 (Si)98
Fig. 52 - Model Ycas0965 Dimensions (Si)98
- Dimensions - Ycas1065 - Ycas1215 (Si)100
Fig. 53 - Model Ycas1065 - Ycas1215 (Si)100
Fig. 54 - Clearances102
- Technical Data102
- Weight Distribution and Isolator Mounting Positions103
Fig. 55 - Cp-2-XX104
Fig. 56 - Isolator Details105
Fig. 57 - Cp-2-XX108
Fig. 58 - Isolator Details109
Fig. 59 - Cp-2-XX112
Fig. 60 - Isolator Details113
Fig. 61 - Cp-2-XX116
Fig. 62 - Isolator Details117
- Installation Instructions for VMC Series Awr/Awmr and Cp Restrained Mountings119
Fig. 63 - Refrigerant Flow Diagram120
Fig. 64 - Process and Instrumentation121
Fig. 65 - Component Locations122
- Compressor Components124
Fig. 66 - Compressor Components124
Fig. 67 - Compressor Components125
Fig. 68 - Compressor Components126
Fig. 69 - Compressor Components127
Fig. 70 - Compressor Components128
Fig. 71 - Compressor Components129
- System Startup Checklist130
- Chiller Control Panel134
- Display and Status Information Keys134
- On / off Rocker Switch134
- Program & Setup Keys134
- Programming and Data Access Keys134
Section 8 - Micro Panel Contents134
1 Introduction & Physical Description135
- 1.1 General135
- 1.2 Keypad & Display135
- 1.3 Unit (Chiller) on / off Switch136
- 1.4 Microprocessor Board136
- 1.5 Ancillary Circuit Boards136
- Circuit Breakers137
- 1.8 Transformers138
- 1.9 Motor Protector Modules138
Fig. 72 - Motor Protection Module139
- Ems/Bas Controls140
- Microprocessor Board Layout142
Fig. 73 - Component Layout142
- Logic Section Layout143
Fig. 74 - Logic Section Layout143
- Anti-Recycle Timer144
- Anti-Coincidence Timer144
- Evaporator Pump Control144
- Compressor Heater Control144
- Evaporator Heater Control144
- Pumpdown (Eev) Control144
- Alarms145
- Run Status (Chiller)145
- Lead / Lag Compressor Selection145
- Or 4 Compressor Chiller Configuration146
- Economizer Solenoid Control146
2 Status Key: General Status Messages & Fault Warnings148
- General148
- General Status Messages148
- Unit Warnings149
- Anticipation Control Status150
- Unit Fault Status Messages151
- System Fault (Safety) Status Messages152
Fig. 75 - Suction Pressure Cutout153
- Printout on Fault Shutdown155
3 Display Keys & Option Switches156
- General156
- Chilled Liquid Temps Key156
- System # Data Keys157
- Ambient Temp Key157
- Motor Current Key158
- Operating Hrs / Start Counter Key158
- Options Key & Dip Switch Settings158
Fig. 77 - Enlarged Photograph of Dip Switches on Microprocessor Board159
- Function Key160
4 Print Keys161
- General161
- Oper Data Key161
- Operating Data - Software Version163
- Operating Data - Remote Printout163
- History Key164
- Fault History Data - Local Display Messages164
- Fault History Data - Remote Printout168
5 Entry Keys169
- General169
- Numerical Keypad169
- Enter Key169
- Cancel Key169
- Keys169
6 Setpoints Keys & Chilled Liquid Control170
- 6.1 General170
- Chilled Liquid Temperature Control170
- Local Cooling Setpoints Key174
- Remote Cooling Setpoints Key174
7 Clock Keys175
- General175
- Set Time Key175
- Set Schedule / Holiday Key176
- Manual Override Key177
8 Program Key178
- Cut-Out178
- General178
- Programming "Default" Values182
- Table 3 - Default Values Table183
- 8.4 Electronic Expansion Valve184
Fig. 78 - Electronic Expansion Valve184
- 8.5 Eev Operation185
- 8.6 Eev Programming187
- Table 4 - Programmable Values Table187
- 8.7 Eev Troubleshooting188
- Compressor Condenser Fan Control189
Table 5 - Condenser Fan Control and Fan Contactor Data for Dxst Units189
Table 8 - Condenser Fan Control and Fan Contactor Data for Dxst Units189
Fig. 79 - Condenser Fan Control Layout for Dxst Compressors Units189
- Compressor Condenser Fan Control190
Table 6 - Condenser Fan Control and Fan Contactor Data for Dxst Units191
Table 7 - Condenser Fan Control and Fan Contactor Data for Dxst Units191
Fig. 80 - Condenser Fan Control Layout for Dxst Compressors Units191
- Table 9 - Condenser Fan Control and Fan Contactor Data for Dxst Units192
- 8.10 Service Mode: Unit Setup193
- Table 10 - Service Mode Programmable Values193
- Table 11 - Ycas Style G, Across the Line Start - 50 Hz194
- Table 12 - Ycas Style G, Wye Delta Start - 50 Hz195
- 8.11 Control Inputs/Outputs197
- Table 13 - Digital Outputs197
- Table 14 - Analog Inputs198
- Table 16 - Analog Outputs199
- Table 15 - Digital Inputs199
- 8.12 Sensor Calibration Charts200
- 8.13 Isn Control201
Table 17 - Isn Received Data201
Table 18 - Isn Transmitted Data201
Table 19 - Isn Operational and Fault Codes204
Section 9 - Maintenance206
- General Requirements206
- Condenser Coils206
  - Chiller / Compressor Operating Log207
  - Scheduled Maintenance207
- On-Board Battery Back-Up207
- Overall Unit Inspection207
- Compressor Unit Operation207
- General Periodic Maintenance Checks210
- Standard Units210
Section 10 - Spare Parts211
- Recommended Spares211
- Recommended Compressor Oils211
Section 11 - Troubleshooting212
Guide212
- Engineered Systems214
- Warranty on New Equipment214
- Warranty on Reconditioned or Replacement Materials214
- Temperature Conversion Chart - Differential Temperatures214
- Temperature Conversion Chart215
- Actual Temperatures215
- Pressure Conversion Chart - Gauge or Differential215

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Brand	York
Model	YCAS Series
Category	Chiller
Language	English