5292157-UIM-B-0317
12
Johnson Controls Unitary Products
FIGURE 14: Electronic Expansion Valve (
EEV) Control Board
A
0
768-
001
1
2
3
4
5
6
7
8
9
10
11
1
2
1
3
1
4
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
