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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
flow sensor.
Pins 1-2:
Not used.
Pins 2-3:
Factory mounted evaporator Ther-
mal type flow sensor (new production chillers
before June 2009) or Leaving Chilled Liquid
Temperature Thermistor (chillers equipped
with the optional Heat Pump Duty feature).
JP22* –
Factory mounted condenser thermal-type flow
sensor.
Pins 1-2:
Not used.
Pins 2-3:
Factory mounted condenser Thermal
type flow sensor (new production chillers be
-
fore June 2009).
JP23* –
Remote Current Limit setpoint (J22) type.
Configures 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 J22-1.
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. Configures 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.