York YCAV0157 Installation Operation & Maintenance page 6

Grounding .............................................................37
Water System ........................................................37
Flow Switch ..........................................................37
Temperature Sensor(s) ..........................................37
Programmed Options ............................................38
Programmed Settings ............................................38
Date & Time .........................................................38
Start / Stop ............................................................38
Setpoint & Remote Offset .....................................38
FIRST TIME STARTUP .........................................38
Interlocks ..............................................................38
Unit Switch ...........................................................38
Start-Up ................................................................38
Oil Pressure...........................................................38
Refrigerant Flow ...................................................39
Loading .................................................................39
Condensor & Fan Rotation ...................................39
Suction Super Heat ...............................................39
Sub-Cooling ..........................................................39
General Operation.................................................39
SECTION 6 - TECHNICAL DATA
WATER PRESSURE DROP CHARTS .................40
GLYCOL CORRECTION FACTORS ..................41
WATER TEMP. AND FLOWS ...............................42
PHYSICAL DATA ..................................................44
OPERATING LIMITATIONS AND SOUND POWER 48
ELECTRICAL DATA .............................................49
ELECTRICAL NOTES ..........................................54
ELEMENTARY WIRING DIAGRAM .................56
CONNECTION DIAGRAM ..................................60
LOCATION LABEL ...............................................64
DIMENSIONS ........................................................66
TECHNICAL DATA (CLEARANCES) ..............122
WEIGHT DIST. & ISOLATOR MOUNTING ...124
ISOLATOR MOUNTING POSITIONS..............125
SEISMIC ISOLATOR INSTALLATION ...........128
NEOPRENE ISOLATOR POSITION .................130
1" DEFLECTION ISOLATOR INSTALLATION 1 3 1
REFRIGERANT FLOW DIAGRAM ..................133
PROCESS & INSTRUMENTATION DIAGRAM 134
COMPONENT LOCATIONS ..............................135
EQUIPMENT START-UP CHECK SHEET .......152
Unit Checks (NO power) ....................................152
Panel Checks
(Power ON-both system switches OFF) .............154
Programmed Values ............................................155
Chilled Liquid Setpoint ...........................................155
Date/Time, Daily Schedule, & Clock Jumper ....156
Initial Start-Up ....................................................156
Check Subcooling & Superheat ..........................156
Leak Checking ....................................................157
6
TABLE OF CONTENTS (CONT'D)
CHILLER ELECTRONIC COMPONENTS ......158
Keypad ................................................................158
Display ................................................................159
Chiller Control Board .........................................160
Relay Output Boards ..........................................161
VSD (Variable Speed Drive) ..............................161
AC to DC Rectifier .............................................161
SCR Trigger Board .............................................162
DC Link Filter ....................................................162
1L Line Inductor .................................................163
AC to DC Inverter ..............................................163
Laminated Bus Structure ....................................163
VSD Logic Board ...............................................164
Control Panel to VSD Communications .............164
IBGT Gate Driver Boards ...................................165
Current Transformers ..........................................165
DV/DT Output Suppression Network ................166
Flash Tank Feed/Drain Valve Controller ............166
DC Bus Voltage Isolation Board .........................167
Chiller Circuit Breaker .......................................167
Autotransformer..................................................167
CHILLER CONFIGURATION JUMPERS ........168
Number of Compressors Configuration Jumpers . 168
VSD LOGIC TO CHILLER MICROPROCESSOR
BOARD RS-485 COMMUNICATION
CONFIGURATION JUMPERS ...........................168
MAX VSD FREQUENCY ...................................169
SECTION 7 - OPERATION
OPERATING CONTROLS ..................................170
BASIC OPERATING SEQUENCE .....................172
NUMBER OF COMPRESSORS TO START .....173
General................................................................173
Standard IPLV.....................................................173
Optional Optimized IPLV ...................................173
MINIMUM VSD COMPRESSOR
START/RUN FREQUENCY ...........................174
Minimum VSD Start Frequency .........................174
Minimum VSD Run Frequency ..........................174
ACCELERATION/DECELERATION RATE
WHEN STARTING & STOPPING
COMPRESSORS ..................................................175
VSD Acceleration/ Deceleration Rates...............175
STANDARD IPLV CAPACITY CONTROL ....176
Fuzzy Logic Control ...........................................177
Hot Water Starts ..................................................178
Lag Compressor Operation in Load Limiting ....178
OPTIONAL IPLV CAPACITY CONTROL .......179
Fuzzy Logic ........................................................180
Hot Water Starts ..................................................181
LOAD LIMITING CONTROL ............................182
FORM 201.21-NM1 (1223)
JOHNSON CONTROLS