York OPTIVIEW YK - FIGURE 24 - Low Voltage Digital Inputs

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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 ow 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 ow sensors are connected to Microboard J7 (See Figure 22 on page 70).
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