78
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 5 - MICROBOARD 031-03630-001
JCI COMPANY CONFIDENTIAL JOHNSON CONTROLS
JP21* – Factory mounted evaporator thermal-type
owsensor.
Pins 1-2: Not used.
Pins 2-3: Factory mounted evaporator Ther-
maltypeowsensor(newproductionchillers
before June 2009) or Leaving Chilled Liquid
Temperature Thermistor (chillers equipped
with the optional Heat Pump Duty feature).
JP22* – Factorymountedcondenserthermal-typeow
sensor.
Pins 1-2: Not used.
Pins 2-3: Factory mounted condenser Thermal
type owsensor(new production chillers be-
fore June 2009).
JP23* – Remote Current Limit setpoint (J22) type.
ConguresAnalogInputfor0to10VDC,2to
10 VDC, 0 to 20mA or 4 to 20mA.
OUT: Allows 0 to 10 VDC or 2 to 10 VDC
input on J22-1.
Pins 1-2: Allows a 0 to 20mA or 4 to 20mA
input on J22-2.
Pins 2-3: 2-3: Not used.
JP24* – Remote Leaving Chilled Liquid Temperature
setpoint (J22) type. Congures Analog Input
for 0 to 10 VDC, 2 to 10 VDC, 0 to 20mA or 4
to 20mA.
OUT: Allows 0 to 10 VDC or 2 to 10 VDC
input on J22-3.
Pins 1-2: Allows a 0 to 20mA or 4 to 20mA
input on J22-4.
Pins 2-3: Not used.
JP25* – DC Undervoltage signal for Proximity Probe.
Pins 1-2: Correct position for YK
Pins 2-3: Not used
JP27 – Applies a pull-up voltage to the COM5B + ter-
minal.
IN: Not used.
OUT: Normal position.
JP28 – Applies a 120 Ohm terminating resistor across
the COM5B RS-485 port.
IN: Not used.
OUT: Normal position - no bias applied.
JP29 – Applies a pull-down voltage to the COM5B -
terminal.
IN: Not used.
OUT: Normal position.
PROGRAM SWITCHES
SW1-1* – Refrigerant Selection. Must be set according
to the refrigerant type installed in the chiller.
ON – R-134a
OFF – R22
Note that with Version 03 software and later, the
refrigerant selection is performed on the SETUP
screen because a third choice of R-513A has been
added. When this is the case, position 1 of SW-1
has no effect.
SW1-2* – Liquid Type. Must be set according to
whether the chiller is cooling water or brine
solution.
ON – Brine. Leaving Chilled setpoint range is
10°F to 70°F.
OFF – Water. Leaving Chilled setpoint range
38°F (36°F if Smart Freeze enabled) to 70°F.
SW1-3* – Diagnostics. Enables or Disables the soft-
ware diagnostics.
ON – Enables diagnostics. Disables normal
chiller operation.
OFF – Disables diagnostics. Enables normal
chiller operation.
SW1-4 – Boot from SD Card/Flash (This performs the
same function as the JP6 jumper on the 02430
board.
ON – Enables boot from SD card to load a new
program.
OFF – Boot the program stored in memory.
The software for the 03630 uses the data
entered on the Sales Order screen to de-
termine proper control settings. After the
Sales Order screen is fully entered, navi-
gate: HOME>SETPOINTS>SETUP>
DIAGNOSTIC and then press the Default
Unit Setpoints button on the Diagnostic
Screen to set the correct control param-
eters. Failure to do this will result in
improper control.