Sterlco GP Series 20-60 HP Packaged Chillers - Manual (Page 49)

GP Series Portable Chillers Chapter 4: Operation 49 of 93
4-6 Configuration Settings
Within the Supervisor Menu the chiller can be configured if options are added in the field.
These configurations are described below.
Variable Description
Access Level
Operator Supervisor
Tank Level Inst Activates/Deactivates the tank level control sensor x
Auto Water Make-up
Activates the automatic water makeup valve within
the controller
x
Fan Control
Set to CYCLING when a standard fan starter is used
to control the fan. Set to VFD when a variable
frequency drive is used to control the fan
x
Disch Press Cntl
When set to SP, the chiller will control to a static SP.
When set to AUTO, the chiller will adjust the
discharge pressure setpoint based on the current
conditions to increase efficiency.
x
Sensor Pack Inst
Activates the optional temperature sensors for
refrigerant liquid line and suction line temperatures,
and entering air or water temperature (depending on
condenser type)
x
Cond Diff Sw Inst
Activates the optional water cooled condenser
differential water pressure switch
x
Chill Diff Sw Inst
Activates the optional evaporator differential water
pressure switch
x
Clock Board Inst Activates the optional controller real time clock card x
Heater Installed Activates the optional process heater x
Analog IN2
Determines how analog input 2 is used. It can be set
to CHIL IN (chiller in temperature), FROM PROC
(from process temperature), CHIL REM SP (chiller
remote setpoint) or PROC REM SP (process remote
setpoint).
x
Remote SP Mode
When Analog IN2 is set to REM SP, this determines
if the LOCAL (entered through the display) setpoint
or REMOTE (Analog IN2) setpoint is used to
control the chiller.
x
Rem SP mA Range
Determines the signal type (0-20mA or 2-20mA) for
the Remote Setpoint
x
Analog In 6
Determines how analog input 6 is used. It can be set
to CHIL IN (chiller in temperature), FROM PROC
(from process temperature) or TO PROC (to process
temperature).
x
Chil Loop Type
Determines the chiller loop’s type (COOL or
HEAT/COOL)
x
Proc Loop Type
Determines the process loop’s type (COOL,
HEAT/COOL or HEAT).
x
Primary Loop
Determines which loop’s (PROC or CHIL)
information to display on the first status page of the
display.
x
Analog Out 2
Determines how analog output 2 is used. It can be
set to CHIL IN (retransmission of the chiller in
temperature), CHIL OUT (retransmission of the
chiller out temperature), FROM PROC
(retransmission of the from process temperature),
TO PROC (retransmission of the to process
temperature) or COOL VLV (process loop cooling
valve).
x