Specifications

14
PIC II System Components — The chiller control
system is called the PIC II (Product Integrated Control II). See
Table 1. The PIC II controls the operation of the chiller by
monitoring all operating conditions. The PIC II can diagnose a
problem and let the operator know what the problem is and
what to check. It promptly positions the guide vanes to main-
tain leaving chilled water temperature. It can interface with
auxiliary equipment such as pumps and cooling tower fans to
turn them on when required. It continually checks all safeties to
prevent any unsafe operating condition. It also regulates the oil
heater while the compressor is off and regulates the hot gas by-
pass valve, if installed. The PIC II controls provide critical pro-
tection for the compressor motor and controls the motor starter.
Table 1 — Major PIC II Components and
Panel Locations
The PIC II can interface with the Carrier Comfort Net-
work
®
(CCN) if desired. It can communicate with other PIC I,
PIC II or PIC III equipped chillers and other CCN devices.
The PIC II consists of 3 modules housed inside 3 major
components. The component names and corresponding control
voltages are listed below (also see Table 1):
• control panel
— all extra low-voltage wiring (24 v or less)
• power panel
— 115 v control voltage transformer primaries (may be
rewired to accomodate 230 vac)
— 115 vac power for oil heater and actuators (oil heaters
may be rewired to accomodate 230 vac)
— up to 575 v for oil pump power
• starter cabinet
— chiller power wiring (per job requirement)
INTERNATIONAL CHILLER VISUAL CONTROLLER
(ICVC) — The ICVC (International Chiller Visual Controller)
is a display/processor module. It incorporates all of the func-
tions and operational features of the CVC, but it has been de-
signed with more memory and processing power. The most no-
ticeable difference is that it comes preprogrammed to display
all tables in the following optional character sets (languages):
English, Mandarin Chinese, Korean, and Japanese. The lan-
guage selection appears at the bottom of the Service/ICVC
Configuration screen. Other languages can be translated and
downloaded in place of the Chinese, Korean and Japanese lan-
guages in the field using the ILT (International Language
Translator) utility software. English cannot be overwritten and
will always be resident in the ICVC. Note that ICVC software
is distinct from and not interchangeable with CVC software.
The ICVC may be distinguished from the CVC by viewing
the back of the plate on which the display is mounted. (Open
up the control panel door to view.)
PIC II COMPONENT PANEL LOCATION
Chiller Visual Controller (ICVC) and
Display
Control Panel
Integrated Starter Module (ISM) Starter Cabinet
Chiller Control Module (CCM) Control Panel
Oil Heater Contactor (1C) Power Panel
Oil Pump Contactor (2C) Power Panel
Hot Gas Bypass Relay (3C) (Optional) Power Panel
Control Transformers (T1, T2) Power Panel
Temperature Sensors See Fig. 2.
Pressure Transducers
See Fig. 2 and
Ta ble 2
CONTROLL-
ER
COLOR OF
PLATE
CEPL NO.
(Hardware)
SOFTWARE
NO.
OTHER
MARKINGS
ICVC Metallic
CEPL
130455-01
CESR
131294-0x
“PIC II” mark-
ing on back
of green cir-
cuit board
CVC Black
CEPL
130286-0x
CESR
131158-0x
CESO
130045
OIL COOLER THERMOSTATIC
EXPANSION VALVE (TXV)
OIL COOLER THERMOSTATIC
EXPANSION VALVE (TXV) BULB
OIL HEATER TERMINAL
BOX
HIGH PRESSURE
SWITCH LOCATION
COMPRESSOR DISCHARGE
TEMPERATURE SENSOR
CABLE
GUIDE VALVE
ACTUATOR CABLE
DIFFUSER PRESSURE
AND DIFFUSER ACTUATOR
CABLE (FRAME 4 & 5
COMPRESSOR ONLY)
OIL RECLAIM
SIGHT GLASS
CABLE FROM
CONTROL PANEL
COMPRESSOR OIL SUMP
TEMPERATURE CABLE
COMPRESSOR OIL SUMP
PRESSURE CABLE
BEARING TEMPERATURE
SENSOR CABLE
COMPRESSOR OIL DISCHARGE
PRESSURE CABLE
MOTOR TEMPERATURE
SENSOR CABLE
Fig. 10 — 19XR,XRV Compressor Controls and Sensor Locations
a19-1606