AIR COOLED CHILLERS
TYPICAL SCHEMATIC WIRING DIAGRAM
28
LEGEND
AI
ANALOG INPUT
CB
CIRCUIT BREAKER
COMP
COMPRESSOR
CC
COMPRESSOR CONTACTOR
CCA
COMPRESSOR CONTACTOR AUXILIARY
CWP
CHILLED WATER PUMP INTERLOCK
FLS
FLOW SWITCH
FM
FAN MOTOR
FU
FUSE
HGBS
HOT GAS BYPASS SOLENOID
HVTB
HIGH VOLTAGE TERMINAL BLOCK
I/O
INPUT/OUTPUT
MB
MAIN BOARD
OLR
OVER LOAD RELAY
PT
PRESSURE TRANSDUCER
R
CHILLERRANGE F
S1
CONTROL SWITCH
SSPS
SOLID STATE PROTECTION SYSTEM
TRANS TRANSFORMER
TS
TEMPERATURE SENSOR
UVM
UNDER VOLTAGE MONITOR
TERMINAL BLOCK
NOTES
1. POWER SUPPLY, REFER TO UNIT NAMEPLATE.
2. COPPER CONDUCTORS ONLY.
3. FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER
TO BE PROVIDED BY END USER WITH RATING AS
RECOMMENDED BY MANUFACTURER.
4. POWER MUST BE SUPPLIED TO CRANKCASE
HEATER FOR MINIMUM OF 12 HOURS PRIOR TO
SYSTEM START UP.
IF POWER IS OFF 6 HOURS OR MORE, CRANKCASE
HEATER MUST BE ON FOR 12 HOURS BEFORE
OPERATING THE SYSTEM.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY
RESULT IN COMPRESSOR DAMAGE.
5.
NEUTRAL LINE
REQUIRED ON 380V-3Ph-60Hz &
380/415V-3Ph-50Hz POWER SUPPLY ONLY.
COMPRESSOR CONNECTION WITH PART WIND START
OPTION & CIRCUIT BREAKER
