5292157-UIM-B-0317
12 Johnson Controls Unitary Products
FIGURE 14: Electronic Expansion Valve (EEV) Control Board
A0768-001
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14
TABLE 2:
EEV Connectors
ITEM INPUT DESCRIPTION CONNECTOR USE CONNECTION
1 B- RS 485 Inverted Input
Communication Signals
Pin 1
2 C 24 VAC System Common Pin 2
3 R 24 VAC System Power Pin 3
4 A+ RS 485 Input Pin 4
5 PR1 5V VCC Pressure Transducer
Indoor Pressure Transducer
Pin 1
6 PR1 0.5 – 4.5V Pressure Transducer Signal Pin 2
7 PR1 Common Pressure Transducer Pin 3
8 T1 10k Temperature Sensor Common
Indoor Temperature Sensor
Pin 4
9 T1 Temperature Sensor Input Pin 5
10 EEV EEV Phase A
EEV Motor Control
Pin 1
11 EEV EEV Phase B Pin 2
12 EEV EEV Phase C Pin 3
13 EEV EEV Phase D Pin 4
14 EEV EEV 12VDC Pin 5