Specifications
Table Of Contents
- Form 150.72-NM1 (908)
- GENERAL SAFETY GUIDELINES
- CHANGEABILITY OF THIS DOCUMENT
- TABLE OF CONTENTS
- LIST OF FIGURES
- LIST OF TABLES
- SECTION 1 – GENERAL CHILLER INFORMATION & SAFETY
- SECTION 2 – PRODUCT DESCRIPTION
- INTRODUCTION
- GENERAL SYSTEM DESCRIPTION
- HIGH AMBIENT KIT
- BUILDING AUTOMATION SYSTEM INTERFACE
- MILLENIUM CONTROL CENTER
- POWER PANEL
- ACCESSORIES AND OPTIONS
- UNIT COMPONENTS
- CONTROL / POWER PANEL COMPONENTS
- PRODUCT IDENTIFICATION NUMBER (PIN)
- BASIC UNIT NOMENCLATURE
- REFRIGERANT FLOW DIAGRAM
- PROCESS AND INSTRUMENTATION DIAGRAM
- SECTION 3 – HANDLING AND STORAGE
- SECTION 4 – INSTALLATION
- INSTALLATION CHECKLIST
- HANDLING
- INSPECTION
- LOCATION AND CLEARANCES
- SPRING ISOLATORS (OPTIONAL)
- COMPRESSOR MOUNTING
- REMOTE COOLER OPTION
- CHILLED LIQUID PIPING
- PIPEWORK ARRANGEMENT
- DUCT WORK CONNECTION
- WIRING
- COMPRESSOR HEATERS
- RELIEF VALVES
- HIGH PRESSURE CUTOUT
- SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER
- USER CONTROL WIRING INPUTS
- USER CONTROL WIRING OUTPUTS
- SECTION 5 – TECHNICAL DATA
- OPERATIONAL LIMITATIONS (ENGLISH)
- HEAT EXCHANGER FLOW, GPM
- PHYSICAL DATA (ENGLISH)
- ELECTRICAL DATA
- ELECTRICAL NOTES
- ELECTRICAL DATA W/O PUMPS
- ELECTRICAL DATA W/ PUMPS
- ELECTRICAL NOTES AND LEGEND
- WIRING DIAGRAMS
- DIMENSIONS (ENGLISH)
- TECHNICAL DATA – CLEARANCES
- WEIGHT DISTRIBUTION AND ISOLATOR MOUNTING POSITIONS
- ISOLATOR INFORMATION FOR UNITS SHIPPED ON OR AFTER JUNE 15, 2008
- ISOLATOR INFORMATION FOR UNITS SHIPPED BEFORE JUNE 15, 2008
- SLRS Seismic Isolator Specifications
- SLRS Seismic Isolator Installation and Adjustment
- One Inch Deflection Spring Isolator Cross-reference
- Installation of 1” Deflection Mounts
- Neoprene Isolator Cross-reference
- Two Inch Deflection, Seismic Spring IsolatorCross-reference - SLRS
- SLRS Seismic Isolator Installation and Adjustment
- SECTION 6 – COMMISSIONING
- SECTION 7 – UNIT CONTROLS
- SECTION 8 – UNIT OPERATION
- CAPACITY CONTROL
- SUCTION PRESSURE LIMIT CONTROLS
- DISCHARGE PRESSURE LIMIT CONTROLS
- LEAVING CHILLED LIQUID CONTROL
- LEAVING CHILLED LIQUID CONTROLOVERRIDE TO REDUCE CYCLING
- LEAVING CHILLED LIQUID SYSTEM LEAD/LAG AND COMPRESSOR SEQUENCING
- RETURN CHILLED LIQUID CONTROL
- RETURN CHILLLED LIQUID SYSTEM LEAD/LAG AND COMPRESSOR SEQUENCING
- ANTI-RECYCLE TIMER
- ANTI-COINCIDENCE TIMER
- EVAPORATOR PUMP CONTROL & YORK HYDRO KIT PUMP CONTROL
- EVAPORATOR HEATER CONTROL
- PUMPDOWN CONTROL
- STANDARD CONDENSER FAN CONTROL
- LOAD LIMITING
- COMPRESSOR RUN STATUS
- ALARM STATUS
- REMOTE BAS/EMS TEMPERATURE RESET USINGA VOLTAGE OR CURRENT SIGNAL
- SECTION 9 – SERVICE AND TROUBLESHOOTING
- SECTION 10 – MAINTENANCE
JOHNSON CONTROLS
134
FORM 150.72-NM1 (908)
Unit Controls
Unit Trip Volts
For total chiller high current trip programming on
460VAC chillers:
• Add the sum of all the compressor and fan RLA’s
in the chiller.
• Multiply the sum by 1.25
• Divide by 225A
• The resulting voltage is the value that should be
programmed.
For example, if fan and compressor RLA’s total 180A:
5V x 180A
x 1.25 =
1125VA
= 5.0V
225A 225A
The programmed value will be 5.0V.
R E M O T E U N I T I D
P R O G R A M M E D = X
TABLE 11 – PROGRAM KEY LIMITS AND DEFAULT
* The minimum discharge pressure allowed is 235 PSIG. The Fan Differential Off Pressure High Limit will be lowered (reduced) to
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
WATER COOLING
80.0 PSIG 120.0 PSIG 80.0 PSIG
5.52 BARG 8.27 BARG 5.52 BARG
GLYCOL COOLING
42.0 PSIG 70.0 PSIG 44.0 PSIG
2.9 BARG 4.83 BARG 3.03 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 60.0 °F
25.0 °F
-17.8 °C 15.6 °C
-3.9 °C
LEAVING CHILLED LIQUID
WATER COOLING
—
—
36 °F
2.2 °C
TEMP. CUTOUT
GLYCOL COOLING
-1.0 °F 36.0 °F 36.0 °F
-18.3 °C 2.2 °C 2.2 °C
ANTI-RECYCLE TIMER
—
300 SEC. 600 SEC. 600 SEC.
FAN CONTROL ON PRESSURE
—
360 PSIG 485 PSIG 385 PSIG
24.8 BARG 33.4 BARG 26.5 BARG
FAN DIFFERENTIAL OFF PRESSURE —
80 PSID
160 PSID* 125 PSID
5.51 BARD 11.03 BARD* 8.62 BARD
TOTAL NUMBER OF COMPRESSORS
SINGLE SYSTEM 2 3 3
DUAL SYSTEM 4 6 6
NUMBER OF FANS PER SYSTEM
2 4 3
UNIT/SYSTEM TRIP VOLTS CURRENT FEEDBACK 0.5 Volts 4.5 Volts 2.5 Volts
REMOTE UNIT ID — 0 7 0
When communications is required with a BAS or
OptiView Panel, individual unit IDs are necessary for
communications with specic chillers on a single RS-
485 line. ID 0-7 is selectable.