Specifications

JOHNSON CONTROLS
8
FORM 150.72-NM1 (908)
SCHEDULE/ADVANCE DAY KEY ............................................................................................................130
PROGRAM KEY ........................................................................................................................................132
System Trip Volts ...............................................................................................................................133
Unit Trip Volts ....................................................................................................................................134
PROGRAM KEY LIMITS AND DEFAULT .................................................................................................134
SETPOINTS QUICK REFERENCE LIST ..................................................................................................135
“UNIT” KEYS ...........................................................................................................................................136
Options Key .......................................................................................................................................136
CLOCK ......................................................................................................................................................140
UNIT KEYS OPTIONS PROGRAMMING QUICK REFERENCE LIST .....................................................141
SECTION 8 – UNIT OPERATION ....................................................................................................................142
CAPACITY CONTROL ..............................................................................................................................142
SUCTION PRESSURE LIMIT CONTROLS ..............................................................................................142
DISCHARGE PRESSURE LIMIT CONTROLS .........................................................................................142
LEAVING CHILLED LIQUID CONTROL ...................................................................................................142
LEAVING CHILLED LIQUID CONTROLOVERRIDE TO REDUCE CYCLING .........................................143
LEAVING CHILLED LIQUID SYSTEM LEAD/LAG AND COMPRESSOR SEQUENCING .....................143
RETURN CHILLED LIQUID CONTROL ....................................................................................................144
RETURN CHILLLED LIQUID SYSTEM LEAD/LAG AND COMPRESSOR SEQUENCING ....................145
ANTI-RECYCLE TIMER ............................................................................................................................146
ANTI-COINCIDENCE TIMER ....................................................................................................................146
EVAPORATOR PUMP CONTROL & YORK HYDRO KIT PUMP CONTROL ..........................................146
EVAPORATOR HEATER CONTROL ........................................................................................................146
PUMPDOWN CONTROL...........................................................................................................................146
STANDARD CONDENSER FAN CONTROL ............................................................................................146
LOAD LIMITING ........................................................................................................................................155
COMPRESSOR RUN STATUS .................................................................................................................155
ALARM STATUS .......................................................................................................................................155
BAS/EMS TEMPERATURE RESET USINGA VOLTAGE OR CURRENT SIGNAL .................................156
SECTION 9 – SERVICE AND TROUBLESHOOTING .....................................................................................157
CLEARING HISTORY BUFFERS..............................................................................................................157
SERVICE MODE........................................................................................................................................157
SERVICE MODE – OUTPUTS ..................................................................................................................157
SERVICE MODE – CHILLER CONFIGURATION .....................................................................................158
SERVICE MODE – ANALOG & DIGITAL INPUTS ...................................................................................158
CONTROL INPUTS/OUTPUTS .................................................................................................................159
MICROBOARD LAYOUT ..........................................................................................................................160
TABLE OF CONTENTS (CONT’D)