Product specifications

15
OPTIONS (CONT.)
Fin Guard Bottom (FGB) (1" x 4" Coated
Wire)—encloses the bottom compressor, condenser
and cooler section of the unit only. Use FGT and FGB
for full unit protection.
Over and Under Voltage and Phase
Protection Relay (UVR2)
—Combined relay
offering protects against high and low incoming
voltage conditions as well as single phasing, phase
reversal and phase imbalance by opening the control
circuit. It is an automatic reset device, but the
microcomputer can be set up for manual reset to
prevent unwanted restarts.
Circuit Breakers (CB)—provide additional short
circuit protection for each compressor.
Electrical Panel Door Latch Solenoids (DLS)—
to provide the security required by local codes. Main
power must be disconnected to gain entry to power
or control electrical panel for models ACDSB 015S-030S.
On all other models the control panel can be accessed
with a keylock override actuated switch. The power
must be disconnected to gain entry to the high voltage
power panel.
Weather Proof Alarm Bell (BEL2)—mounted
and wired to indicate a common alarm fault.
Unit Ground Fault Detector (GFD)—that takes
the unit off line if a ground fault is detected.
500 Hour Salt Spray Coating (PNT)—special
high-grade outdoor quality coating system tested to
maintain integrity under the ASTM-B-117 specification.
Suction Line Insulation (INS)—suggested for
medium temperature applications or where excessive
sweating may occur.
Electronic Expansion Valves (EEV)—for more
precise control over a wide range of operating
conditions such as dual mode air conditioning and
thermal storage applications. The EEV option is supplied
as part of the (ELAC) extra low ambient operation down
to -20°F (-23.9°C) minimum ambient operation.
Remote Monitoring Modem (MOD1)—for
single chiller long distance communication, allows the
system to be monitored, retrieve logs, and assist with
investigating potential problems quickly and in a cost
effective manner from a remote source.
Remote Monitoring Modem (MOD2)—for
multiple chiller network long distance communication
with the same features as MOD1, with the addition of
a gateway to convert the RS485 ports for network
operation.
Chiller LINK (CHLK)—for communication with
(BMS) building management systems through N2 Bus,
BacNet, Modbus or Lonworks. See Chiller LINK Data
Acquisition Form SD202-22203.
Chilled Water Pump Control (CWPC)—
provides a contact closure for pump starting prior to
starting the chiller.
Mounted and Wired Water Flow Switch
(MWFS)
—is mounted, wired and tested at the factory.
The water flow switch is a safety control and if not
supplied mounted and wired must be field mounted
and wired.
Auxiliary Control Module (ACM)—consisting
of RWTM, UDL, LLC and CAM option package of special
control functions.
- RWTM - Return Water (Fluid) Temperature
Monitoring—is used for information only. Unit control
is based on leaving water temperature with a specific
temperature differential (range), so the return water
temperature is for information only.
- UDL-Utility Demand Limiting—requires a remote
analog input signal that is used to cycle compressors
to limit electrical demand. The demand limiting can
be one or two steps, based on the particular unit model.
The required signal is 0 to 5VDC.
- LLC - Load Limiting Control—is based on compressor
current limiting rather than return water temperature
control load limiting method. This current limiting
method is superior to return water temperature control
method because it protects the compressor from over
current while allowing the unit to run fully loaded when
possible.
- CAM - Compressor Amp Monitoring—displays
compressor amps for load monitoring and trend
logging.