72
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 4 - MICROBOARD 031-02430-000 AND 031-02430-001
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
FIGURE 24 -
LOW VOLTAGE DIGITAL INPUTS
LD12827a
NOTE:
1. On new production chillers after June 2009, the Thermal type flow sensors are connected to Microboard J14 as shown above. Program
Jumpers JP10 through JP12 must be positioned on pins 2-3 and software version C.OPT.01.21.307 (and later) is required. On new
production chillers before June 2009, the Thermal type flow sensors are connected to Microboard J7 (See
).
24VAC
Factory Mounted Evaporator
Thermal-Type Flow Sensor
(note 1)
3
2
4
2
4
2
4
1
24VAC
Factory Mounted Condenser
Thermal-Type Flow Sensor
(note 1)
3
1
24VAC
Factory Mounted
Heating Condenser
Thermal-Type Flow Sensor
(note 1)
3
1